CN102205486B - Method for processing iridium alloy bar or plate - Google Patents
Method for processing iridium alloy bar or plate Download PDFInfo
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- CN102205486B CN102205486B CN 201110081039 CN201110081039A CN102205486B CN 102205486 B CN102205486 B CN 102205486B CN 201110081039 CN201110081039 CN 201110081039 CN 201110081039 A CN201110081039 A CN 201110081039A CN 102205486 B CN102205486 B CN 102205486B
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- iridium alloy
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- metal molybdenum
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- 229910000575 Ir alloy Inorganic materials 0.000 title claims abstract description 182
- 238000000034 method Methods 0.000 title claims abstract description 82
- 238000012545 processing Methods 0.000 title claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 claims abstract description 99
- 239000002184 metal Substances 0.000 claims abstract description 99
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 89
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 89
- 239000011733 molybdenum Substances 0.000 claims abstract description 89
- 239000000463 material Substances 0.000 claims abstract description 78
- 238000000137 annealing Methods 0.000 claims abstract description 31
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000001257 hydrogen Substances 0.000 claims abstract description 17
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- NICDRCVJGXLKSF-UHFFFAOYSA-N nitric acid;trihydrochloride Chemical compound Cl.Cl.Cl.O[N+]([O-])=O NICDRCVJGXLKSF-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 3
- 238000005098 hot rolling Methods 0.000 claims description 80
- 230000008569 process Effects 0.000 claims description 56
- 238000005242 forging Methods 0.000 claims description 39
- 238000005096 rolling process Methods 0.000 claims description 34
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 24
- 230000009467 reduction Effects 0.000 claims description 18
- 238000003672 processing method Methods 0.000 claims description 15
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 229910017604 nitric acid Inorganic materials 0.000 claims description 12
- 238000003801 milling Methods 0.000 claims description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 15
- 238000005516 engineering process Methods 0.000 abstract description 14
- 238000004663 powder metallurgy Methods 0.000 description 20
- 238000002844 melting Methods 0.000 description 16
- 230000008018 melting Effects 0.000 description 16
- 238000003754 machining Methods 0.000 description 10
- 229910052741 iridium Inorganic materials 0.000 description 9
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 9
- 238000011160 research Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000001192 hot extrusion Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001029 Hf alloy Inorganic materials 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000003026 anti-oxygenic effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
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Abstract
The invention discloses a method for processing an iridium alloy bar or plate. The method comprises the following steps of: wrapping and welding an iridium alloy to be processed by using a hot-rolled metal molybdenum plate as a wrapping material at first; placing the iridium alloy wrapped by the hot-rolled metal molybdenum plate into a hydrogen resistance furnace and heating; processing the heated iridium alloy wrapped by the hot-rolled metal molybdenum plate to obtain a bar or plate; annealing the obtained bar or plate; and finally immersing the annealed bar or plate into chloroazotic acid and eliminating the wrapped hot-rolled metal molybdenum plate so as to obtain the iridium alloy bar or plate. The method is simple and easy to implement, and no special equipment is needed; and by using the advantage of the metal molybdenum and adopting a wrapping technology, the iridium alloy is wrapped into the hot-rolled metal molybdenum plate, so the iridium alloy cannot be influenced by the environmental condition during processing, and the iridium alloy can be processed successfully.
Description
Technical field
The invention belongs to the alloy bar material technical field of board processing, be specifically related to the processing method of a kind of iridium alloy bar or sheet material.
Background technology
The research of iridium and iridium alloy receives much concern abroad always.Countries such as the U.S., Japan and Russia have all successively carried out the working research of iridium alloy, and are comparatively deep to processing and preparing researchs such as iridium alloy melting, hot extrusions.Since the sixties in last century the U.S. with regard to successful development the Ir-W-Th-Al alloy system, be applied on a plurality of deep space probes as the cladding nuclear fuels material.Developed the Ir-W-Zr/Hf alloy system afterwards again, and succeed and use, iridium alloy melting, hot extrusion technique are in the U.S. very maturation.
Good characteristics such as that iridium alloy has is anti-oxidant, corrosion-resistant, elevated temperature strength is good, the motivation of formerly setting out, space environment obtain extensive use with aspects such as thermoelectric cell, supersonic wind tunnel nozzle and high temperature thermometric protective sleeves.Iridium is the high-melting-point noble metal, although belong to the platinum family element of face-centred cubic structure, shows the brittle fracture characteristic similar with the body-centered cubic structure metal, and processing characteristics is very poor, and the preparation of its plate, rod, silk even depth converted products is worker's difficulty very.The external main melting mode that adopts obtains billet, under the vacuum environment condition, carries out deep processing then.Owing to receive effects limit such as process equipment, the domestic high frequency melting casting method that mostly adopts at present under the atmosphere is produced pure iridium crucible or the elementary goods of pure iridium, and iridium alloy and high-quality deep processed product thereof then can't be accomplished.
Domestic working research to iridium alloy is started late.Pure iridium is not high to equipment requirements because of its good antioxygenic property, can realize the processing of pure iridium crucible and part plate, bar according to existing means, but the performance quality of yield rate and material is not high.And for iridium alloy, for guaranteeing accurately to realize the design performance of alloying component and material, just comparatively harsh in the process for capacity of equipment and environmental requirement.Though routine is used for the ability that the process equipment of refractory metal possesses the processing iridium alloy, and is poor because of environmental condition, cause the material surface pollution easily and processing can't be carried out, the design performance of iridium alloy can't be realized, and yield rate is very low.
Summary of the invention
Technical problem to be solved by this invention is the deficiency to above-mentioned prior art; Providing a kind of is coated on iridium alloy in the hot-rolling metal molybdenum plate; Thereby the protection iridium alloy does not receive environmental influence in process; On existing equipment, accomplish the processing of iridium alloy, it is high to obtain yield rate, the iridium alloy bar of function admirable or sheet material method.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the processing method of a kind of iridium alloy bar or sheet material is characterized in that this method at first selects for use the hot-rolling metal molybdenum plate as sheath material iridium alloy to be processed to be carried out clad welded; The iridium alloy that will be coated with the hot-rolling metal molybdenum plate then places hydrogen resistance furnace, in temperature is to heat 1h～5h under 800 ℃～1750 ℃ the condition; Then the iridium alloy that is coated with the hot-rolling metal molybdenum plate after the heating is forged processing and obtain bar; Perhaps the iridium alloy that is coated with the hot-rolling metal molybdenum plate after the heating is rolled processing and obtains sheet material, perhaps the iridium alloy that is coated with the hot-rolling metal molybdenum plate after the heating is carried out elder generation forging and then rolling processing obtains sheet material; Again bar or the sheet material that obtains is carried out annealing in process; Place chloroazotic acid to soak bar or sheet material after annealing in process at last, remove the hot-rolling metal molybdenum plate of coating, obtain iridium alloy bar or sheet material.
The above-mentioned a kind of iridium alloy bar or the processing method of sheet material, the thickness of said hot-rolling metal molybdenum plate is 0.2mm～3.5mm.
The above-mentioned a kind of iridium alloy bar or the processing method of sheet material, the method for said clad welded are the argon arc welding.
The above-mentioned a kind of iridium alloy bar or the processing method of sheet material; The process of said forging processing is: the iridium alloy that is coated with the hot-rolling metal molybdenum plate after will heating falls forging dies to required diameter on the 1000Kg air forging hammer; The pass reduction that forges is 10%～30%; Every completion is once forged, and with the iridium alloy that is coated with the hot-rolling metal molybdenum plate in temperature is to heat 10min～15min under 800 ℃～1650 ℃ the condition, and final forging temperature is 600 ℃～1500 ℃.
The above-mentioned a kind of iridium alloy bar or the processing method of sheet material; The process of said rolling processing is: the iridium alloy that is coated with the hot-rolling metal molybdenum plate after will heating is rolling to desired thickness on the sheet metal milling train; Rolling pass reduction is 15%～20%; Every completion is once rolling, with the iridium alloy that is coated with the hot-rolling metal molybdenum plate in temperature is to heat 10min～15min under 800 ℃～1650 ℃ the condition, and finishing temperature is 600 ℃～1500 ℃.
The above-mentioned a kind of iridium alloy bar or the processing method of sheet material; The process of said forging earlier and then rolling processing is: the iridium alloy that is coated with the hot-rolling metal molybdenum plate after will heating falls forging dies on the 1000Kg air forging hammer, the pass reduction of forging is 10%～30%, and every completion is once forged; Be to heat 10min～15min under 800 ℃～1650 ℃ the condition with the iridium alloy that is coated with the hot-rolling metal molybdenum plate in temperature; Final forging temperature is 600 ℃～1500 ℃, forges when diameter is 10mm～30mm, uses air forging hammer directly to forge to thickness and is flat of the iridium alloy of 5mm～15mm; Then flat of iridium alloy is heated 1h～5h in 800 ℃～1750 ℃ in hydrogen furnace; Flat of iridium alloy after will heating again is rolling to desired thickness along width on the sheet metal milling train, rolling pass reduction is 15%～20%, and every completion is once rolling; Be to heat 10min～15min under 800 ℃～1650 ℃ the condition in temperature with flat of iridium alloy, finishing temperature is 600 ℃～1500 ℃.
The above-mentioned a kind of iridium alloy bar or the processing method of sheet material, the system of said annealing in process is: annealing temperature is 800 ℃～1350 ℃, and annealing time is 30min～60min.
The above-mentioned a kind of iridium alloy bar or the processing method of sheet material, said chloroazotic acid are that the hydrochloric acid of nitric acid and the mass concentration 36% of mass concentration 65% forms by 1: 3 volume ratio mixed preparing.
The present invention compared with prior art has the following advantages:
1, the inventive method is simple, does not need special installation, is easy to realize.
2, the present invention utilizes metal molybdenum can bear very high heating-up temperature; Has good ductility under the hot conditions; Can in process, keep homogeneous deformation and not damaged; In hot procedure, do not react, and can remain identical advantages such as rate of deformation, adopt the jacket technology that iridium alloy is coated in the hot-rolling metal molybdenum plate with iridium alloy with iridium alloy; Thereby the protection iridium alloy does not receive environmental influence in process, avoids iridium alloy to make the possibility of poor processability because of receiving outside contamination.
3, adopt method of the present invention can on existing equipment, accomplish the processing of iridium alloy, it is high to obtain yield rate, the iridium alloy bar or the sheet material of function admirable.
4, adopt the iridium alloy bar of method processing of the present invention or the relative density of sheet material can reach 100%.
5, method of the present invention is equally applicable to the processing of pure iridium bar or sheet material.
Through embodiment, technical scheme of the present invention is done further detailed description below.
The specific embodiment
Embodiment 1
Desire is processed into the melting iridium alloy ingot of Φ 52mm * 120mm the iridium alloy rod of Φ 19.3mm.Calculating total working modulus is 62.89%, selects for use the hot-rolling metal molybdenum plate of 0.2mm thickness as sheath material melting iridium alloy ingot to be processed to be carried out clad welded; The melting iridium alloy ingot that is coated with the hot-rolling metal molybdenum plate is heated 1h in 1750 ℃ in hydrogen resistance furnace; On the 1000Kg air forging hammer, fall the bar that forging dies to diameter is Φ 20.3mm then; The pass reduction that forges is controlled at 10%; Every completion is once forged, and with the melting iridium alloy ingot that is coated with the hot-rolling metal molybdenum plate in temperature is to heat 10min under 1650 ℃ the condition, and final forging temperature is 1500 ℃; Then with the bar annealing in process 30min under 1350 ℃ of conditions that forges, to eliminate machining stress; To soak with chloroazotic acid (hydrochloric acid of the nitric acid of mass concentration 65% and mass concentration 36% forms by 1: 3 volume ratio mixed preparing) through the bar of annealing in process at last and remove the hot-rolling metal molybdenum plate of coating in 3 hours, obtain to be of a size of the iridium alloy bar of Φ 19.3mm * 869mm.
Present embodiment utilizes metal molybdenum can bear very high heating-up temperature; Has good ductility under the hot conditions; Can in process, keep homogeneous deformation and not damaged, in hot procedure, not react, and can remain identical advantages such as rate of deformation with iridium alloy with iridium alloy; Adopt the jacket technology that iridium alloy is coated in the hot-rolling metal molybdenum plate, thereby the protection iridium alloy does not receive environmental influence in process.The iridium alloy bar surface of processing is good, and relative density reaches 100%.
Embodiment 2
Desire is Φ 48.1mm * 70mm, and density reaches the iridium alloy rod that 95.6% powder metallurgy iridium alloy ingot is processed into Φ 15mm.Calculating total working modulus is 68.8%, selects for use the hot-rolling metal molybdenum plate of 0.35mm thickness as sheath material powder metallurgy iridium alloy ingot to be processed to be carried out clad welded; The powder metallurgy iridium alloy ingot that is coated with the hot-rolling metal molybdenum plate is heated 5h in 1700 ℃ in hydrogen resistance furnace; On the 1000Kg air forging hammer, fall the bar that forging dies to diameter is Φ 15.1mm then; The pass reduction that forges is controlled at 20%; Every completion is once forged, and with the powder metallurgy iridium alloy ingot that is coated with the hot-rolling metal molybdenum plate in temperature is to heat 15min under 1600 ℃ the condition, and final forging temperature is 1350 ℃; Then with the bar annealing in process 60min under 1400 ℃ of conditions that forges, to eliminate machining stress; To soak with chloroazotic acid (hydrochloric acid of the nitric acid of mass concentration 65% and mass concentration 36% forms by 1: 3 volume ratio mixed preparing) through the bar of annealing in process at last and remove the hot-rolling metal molybdenum plate of coating in 3 hours, obtain to be of a size of the iridium alloy bar of Φ 15.01mm * 680mm.
Present embodiment utilizes metal molybdenum can bear very high heating-up temperature; Has good ductility under the hot conditions; Can in process, keep homogeneous deformation and not damaged, in hot procedure, not react, and can remain identical advantages such as rate of deformation with iridium alloy with iridium alloy; Adopt the jacket technology that iridium alloy is coated in the hot-rolling metal molybdenum plate, thereby the protection iridium alloy does not receive environmental influence in process.The iridium alloy bar surface of processing is good, and relative density reaches 100%.
Embodiment 3
Desire is processed into the powder metallurgy iridium alloy ingot of Φ 75mm * 90mm density 95.2% the iridium alloy rod of Φ 20mm.Calculating total working modulus is 73.3%, selects for use the hot-rolling metal molybdenum plate of 0.4mm thickness as sheath material powder metallurgy iridium alloy ingot to be processed to be carried out clad welded; The powder metallurgy iridium alloy ingot that is coated with the hot-rolling metal molybdenum plate is heated 3h in 1650 ℃ in hydrogen resistance furnace; On the 1000Kg air forging hammer, fall the bar that forging dies to diameter is Φ 20.2mm then; The pass reduction that forges is controlled at 30%; Every completion is once forged, and with the powder metallurgy iridium alloy ingot that is coated with the hot-rolling metal molybdenum plate in temperature is to heat 12min under 1550 ℃ the condition, and final forging temperature is 1150 ℃; Then with the bar annealing in process 45min under 1200 ℃ of conditions that forges, to eliminate machining stress; To soak with chloroazotic acid (hydrochloric acid of the nitric acid of mass concentration 65% and mass concentration 36% forms by 1: 3 volume ratio mixed preparing) through the bar of annealing in process at last and remove the hot-rolling metal molybdenum plate of coating in 3 hours, obtain to be of a size of the iridium alloy bar of Φ 20.1mm * 121mm.
Present embodiment utilizes metal molybdenum can bear very high heating-up temperature; Has good ductility under the hot conditions; Can in process, keep homogeneous deformation and not damaged, in hot procedure, not react, and can remain identical advantages such as rate of deformation with iridium alloy with iridium alloy; Adopt the jacket technology that iridium alloy is coated in the hot-rolling metal molybdenum plate, thereby the protection iridium alloy does not receive environmental influence in process.The iridium alloy bar surface of processing is good, and relative density reaches 100%.
Embodiment 4
Desire is processed into the melting iridium alloy ingot of Φ 50mm * 85mm the iridium plywood material of 3.0mm * 120mm * Lmm.The total working modulus of calculated thickness is 94%, selects for use the hot-rolling metal molybdenum plate of 1.7mm thickness as sheath material melting iridium alloy ingot to be processed to be carried out clad welded; With the melting iridium alloy ingot that is coated with the hot-rolling metal molybdenum plate in hydrogen resistance furnace in 1600 ℃ the heating 1h, on the 1000Kg air forging hammer, fall forging dies then, the pass reduction of forging is controlled at 20%; Every completion is once forged, and with the melting iridium alloy ingot that is coated with the hot-rolling metal molybdenum plate in temperature is to heat 12min under 1550 ℃ the condition, and final forging temperature is 1500 ℃; Forge when diameter is Φ 21mm; Use air forging hammer directly to forge to thickness and be flat of the iridium alloy of 10mm, again with flat of iridium alloy in hydrogen furnace in 1500 ℃ of heating 1h, on the sheet metal milling train, be rolled into the sheet material that thickness is 3.1mm along width; Rolling pass reduction is 15%; Every completion is once rolling, with flat of iridium alloy in temperature is to heat 10min under 1450 ℃ the condition, and finishing temperature is 1300 ℃; Then with rolling sheet material annealing in process 30min under 1350 ℃ of conditions, to eliminate machining stress; To soak with chloroazotic acid (hydrochloric acid of the nitric acid of mass concentration 65% and mass concentration 36% forms by 1: 3 volume ratio mixed preparing) through the bar of annealing in process at last and remove the hot-rolling metal molybdenum plate of coating in 3 hours, obtain to be of a size of the iridium alloy sheet material of 3.0mm * 120mm * 48mm.
Present embodiment utilizes metal molybdenum can bear very high heating-up temperature; Has good ductility under the hot conditions; Can in process, keep homogeneous deformation and not damaged, in hot procedure, not react, and can remain identical advantages such as rate of deformation with iridium alloy with iridium alloy; Adopt the jacket technology that iridium alloy is coated in the hot-rolling metal molybdenum plate, thereby the protection iridium alloy does not receive environmental influence in process.The iridium alloy plate surface of processing is good, and relative density reaches 100%.
Embodiment 5
Desire is forged the iridium alloy bar that is processed into Φ 5.0mm with the melting iridium alloy ingot of Φ 15.2mm * 105mm.Calculating total working modulus is 67%, selects for use the hot-rolling metal molybdenum plate of 0.3mm thickness as sheath material melting iridium alloy ingot to be processed to be carried out clad welded; The melting iridium alloy ingot that is coated with the hot-rolling metal molybdenum plate is heated 2h in 800 ℃ in hydrogen resistance furnace; On the 1000Kg air forging hammer, fall the bar that forging dies to diameter is Φ 5.1mm then; The pass reduction that forges is controlled at 20%; Every completion is once forged, and with the melting iridium alloy ingot that is coated with the hot-rolling metal molybdenum plate in temperature is to heat 10min under 800 ℃ the condition, and final forging temperature is 600 ℃; Then with the bar annealing in process 40min under 800 ℃ of conditions that forges, to eliminate machining stress; To soak with chloroazotic acid (hydrochloric acid of the nitric acid of mass concentration 65% and mass concentration 36% forms by 1: 3 volume ratio mixed preparing) through the bar of annealing in process at last and remove the hot-rolling metal molybdenum plate of coating in 3 hours, obtain to be of a size of the iridium alloy bar of Φ 5.0mm * 970mm.
Present embodiment utilizes metal molybdenum can bear very high heating-up temperature; Has good ductility under the hot conditions; Can in process, keep homogeneous deformation and not damaged, in hot procedure, not react, and can remain identical advantages such as rate of deformation with iridium alloy with iridium alloy; Adopt the jacket technology that iridium alloy is coated in the hot-rolling metal molybdenum plate, thereby the protection iridium alloy does not receive environmental influence in process.The iridium alloy bar surface of processing is good, and relative density reaches 100%.
Embodiment 6
Desire is processed into the powder metallurgy sintered iridium alloy ingot of Φ 38mm * 60mm the iridium plywood material of 3.0mm * 120mm * Lmm.The total working modulus of calculated thickness is 92.1%, selects for use the hot-rolling metal molybdenum plate of 1.7mm thickness as sheath material powder metallurgy sintered iridium alloy ingot to be processed to be carried out clad welded; With the powder metallurgy sintered iridium alloy ingot that is coated with the hot-rolling metal molybdenum plate in hydrogen resistance furnace in 1350 ℃ the heating 5h, on the 1000Kg air forging hammer, fall forging dies then, the pass reduction of forging is controlled at 10%; Every completion is once forged, and with the powder metallurgy sintered iridium alloy ingot that is coated with the hot-rolling metal molybdenum plate in temperature is to heat 15min under 1300 ℃ the condition, and final forging temperature is 1200 ℃; Forge when diameter is Φ 19mm; Use air forging hammer directly to forge to thickness and be flat of the iridium alloy of 9mm, again with flat of iridium alloy in hydrogen furnace in 1200 ℃ of heating 5h, on the sheet metal milling train, be rolled into the sheet material that thickness is 3.1mm along width; Rolling pass reduction is 20%; Every completion is once rolling, with flat of iridium alloy in temperature is to heat 10min under 1100 ℃ the condition, and finishing temperature is 800 ℃; Then with rolling sheet material annealing in process 60min under 800 ℃ of conditions, to eliminate machining stress; To soak with chloroazotic acid (hydrochloric acid of the nitric acid of mass concentration 65% and mass concentration 36% forms by 1: 3 volume ratio mixed preparing) through the bar of annealing in process at last and remove the hot-rolling metal molybdenum plate of coating in 3 hours, obtain to be of a size of the iridium alloy sheet material of 3.0mm * 120mm * 48mm.
Present embodiment utilizes metal molybdenum can bear very high heating-up temperature; Has good ductility under the hot conditions; Can in process, keep homogeneous deformation and not damaged, in hot procedure, not react, and can remain identical advantages such as rate of deformation with iridium alloy with iridium alloy; Adopt the jacket technology that iridium alloy is coated in the hot-rolling metal molybdenum plate, thereby the protection iridium alloy does not receive environmental influence in process.The iridium alloy plate surface of processing is good, and relative density reaches 100%.
Embodiment 7
Desire is processed into the powder metallurgy sintered iridium alloy base of 30mm * 50mm * 50mm the sheet material of 3.0mm * 120mm * Lmm.The total working modulus of calculated thickness direction is 90%, selects for use the hot-rolling metal molybdenum plate of 1.0mm thickness as sheath material powder metallurgy sintered iridium alloy base to be processed to be carried out clad welded; The powder metallurgy sintered iridium alloy base that is coated with the hot-rolling metal molybdenum plate is heated 3h in 1450 ℃ in hydrogen resistance furnace; On the sheet metal milling train, be rolled into the sheet material that thickness is 3.1mm then; It is rolling to commutate when width reaches 120mm, and rolling pass reduction is 15%, and every completion is once rolling; Be to heat 15min under 1300 ℃ the condition in temperature with the powder metallurgy sintered iridium alloy base that is coated with the hot-rolling metal molybdenum plate, finishing temperature is 1100 ℃; Then with rolling sheet material annealing in process 30min under 1200 ℃ of conditions, to eliminate machining stress; To soak with chloroazotic acid (hydrochloric acid of the nitric acid of mass concentration 65% and mass concentration 36% forms by 1: 3 volume ratio mixed preparing) through the bar of annealing in process at last and remove the hot-rolling metal molybdenum plate of coating in 3 hours, obtain to be of a size of the iridium alloy sheet material of 3.0mm * 120mm * 201mm.
Present embodiment utilizes metal molybdenum can bear very high heating-up temperature; Has good ductility under the hot conditions; Can in process, keep homogeneous deformation and not damaged, in hot procedure, not react, and can remain identical advantages such as rate of deformation with iridium alloy with iridium alloy; Adopt the jacket technology that iridium alloy is coated in the hot-rolling metal molybdenum plate, thereby the protection iridium alloy does not receive environmental influence in process.The iridium alloy plate surface of processing is good, and relative density reaches 100%.
Embodiment 8
Desire is processed into the powder metallurgy sintered iridium alloy base of 30mm * 50mm * 60mm the sheet material of 0.8mm * 120mm * Lmm.The total working modulus of calculated thickness direction is 97.3%, selects for use the hot-rolling metal molybdenum plate of 3.5mm thickness as sheath material powder metallurgy sintered iridium alloy base to be processed to be carried out clad welded; The powder metallurgy sintered iridium alloy base that is coated with the hot-rolling metal molybdenum plate is heated 5h in 1500 ℃ in hydrogen resistance furnace; On the sheet metal milling train, be rolled into the sheet material that thickness is 3.1mm then; It is rolling to commutate when width reaches 120mm, and rolling pass reduction is 20%, and every completion is once rolling; Be to heat 15min under 1350 ℃ the condition in temperature with the powder metallurgy sintered iridium alloy base that is coated with the hot-rolling metal molybdenum plate, finishing temperature is 1200 ℃; Then with rolling sheet material annealing in process 60min under 1250 ℃ of conditions, to eliminate machining stress; To soak with chloroazotic acid (hydrochloric acid of the nitric acid of mass concentration 65% and mass concentration 36% forms by 1: 3 volume ratio mixed preparing) through the bar of annealing in process at last and remove the hot-rolling metal molybdenum plate of coating in 3 hours, obtain to be of a size of the iridium alloy sheet material of 3.0mm * 120mm * 201mm.
Present embodiment utilizes metal molybdenum can bear very high heating-up temperature; Has good ductility under the hot conditions; Can in process, keep homogeneous deformation and not damaged, in hot procedure, not react, and can remain identical advantages such as rate of deformation with iridium alloy with iridium alloy; Adopt the jacket technology that iridium alloy is coated in the hot-rolling metal molybdenum plate, thereby the protection iridium alloy does not receive environmental influence in process.The iridium alloy plate surface of processing is good, and relative density reaches 100%.
Embodiment 9
Desire is processed into the sheet material of 0.2mm * 120mm * Lmm with 3.0mm * 100mm * 120mm hot rolling iridium alloy sheet material.The total working modulus of calculated thickness direction is 93.3%, selects for use the hot-rolling metal molybdenum plate of 1.5mm thickness as sheath material hot rolling iridium alloy sheet material to be processed to be carried out clad welded; The hot rolling iridium alloy sheet material that is coated with the hot-rolling metal molybdenum plate is heated 3h in 1000 ℃ in hydrogen resistance furnace; On the sheet metal milling train, be rolled into the sheet material that thickness is 0.29mm then; Rolling pass reduction is 18%; Every completion is once rolling, with the hot rolling iridium alloy sheet material that is coated with the hot-rolling metal molybdenum plate in temperature is to heat 10min under 900 ℃ the condition, and finishing temperature is 800 ℃; Then with rolling sheet material annealing in process 45min under 800 ℃ of conditions, to eliminate machining stress; To soak with chloroazotic acid (hydrochloric acid of the nitric acid of mass concentration 65% and mass concentration 36% forms by 1: 3 volume ratio mixed preparing) through the bar of annealing in process at last and remove the hot-rolling metal molybdenum plate of coating in 3 hours, obtain to be of a size of the iridium alloy sheet material of 0.2mm * 120mm * 1500mm.
Present embodiment utilizes metal molybdenum can bear very high heating-up temperature; Has good ductility under the hot conditions; Can in process, keep homogeneous deformation and not damaged, in hot procedure, not react, and can remain identical advantages such as rate of deformation with iridium alloy with iridium alloy; Adopt the jacket technology that iridium alloy is coated in the hot-rolling metal molybdenum plate, thereby the protection iridium alloy does not receive environmental influence in process.The iridium alloy plate surface of processing is good, and relative density reaches 100%.
Embodiment 10
Desire is processed into the sheet material of 0.1mm * 100mm * Lmm with 1.0mm * 80mm * 100mm hot rolling iridium alloy sheet material.The total working modulus of calculated thickness direction is 90%, selects for use the hot-rolling metal molybdenum plate of 1.2mm thickness as sheath material hot rolling iridium alloy sheet material to be processed to be carried out clad welded; The hot rolling iridium alloy sheet material that is coated with the hot-rolling metal molybdenum plate is heated 1h in 800 ℃ in hydrogen resistance furnace; On the sheet metal milling train, be rolled into the sheet material that thickness is 0.15mm then; Rolling pass reduction is 18%; Every completion is once rolling, with the hot rolling iridium alloy sheet material that is coated with the hot-rolling metal molybdenum plate in temperature is to heat 10min under 800 ℃ the condition, and finishing temperature is 600 ℃; Then with rolling sheet material annealing in process 45min under 800 ℃ of conditions, to eliminate machining stress; To soak with chloroazotic acid (hydrochloric acid of the nitric acid of mass concentration 65% and mass concentration 36% forms by 1: 3 volume ratio mixed preparing) through the bar of annealing in process at last and remove the hot-rolling metal molybdenum plate of coating in 3 hours, obtain to be of a size of the iridium alloy sheet material of 0.1mm * 100mm * 800mm.
Present embodiment utilizes metal molybdenum can bear very high heating-up temperature; Has good ductility under the hot conditions; Can in process, keep homogeneous deformation and not damaged, in hot procedure, not react, and can remain identical advantages such as rate of deformation with iridium alloy with iridium alloy; Adopt the jacket technology that iridium alloy is coated in the hot-rolling metal molybdenum plate, thereby the protection iridium alloy does not receive environmental influence in process.The iridium alloy plate surface of processing is good, and relative density reaches 100%.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any restriction, every according to inventing technical spirit to any simple modification, change and equivalent structure variation that above embodiment did, all still belong in the protection domain of technical scheme of the present invention.
Claims (5)
1. the processing method of an iridium alloy sheet material is characterized in that, this method at first selects for use the hot-rolling metal molybdenum plate as sheath material iridium alloy to be processed to be carried out clad welded; The iridium alloy that will be coated with the hot-rolling metal molybdenum plate then places hydrogen resistance furnace, in temperature is to heat 1h～5h under 800 ℃～1750 ℃ the condition; Then the iridium alloy that is coated with the hot-rolling metal molybdenum plate after the heating is carried out elder generation forging and then rolling processing obtains sheet material; Again the sheet material that obtains is carried out annealing in process; Place chloroazotic acid to soak the sheet material after annealing in process at last, remove the hot-rolling metal molybdenum plate of coating, obtain iridium alloy sheet material; The process of said forging earlier and then rolling processing is: the iridium alloy that is coated with the hot-rolling metal molybdenum plate after will heating falls forging dies on the 1000Kg air forging hammer; The pass reduction that forges is 10%～30%; Every completion is once forged, and with the iridium alloy that is coated with the hot-rolling metal molybdenum plate in temperature is to heat 10min～15min under 800 ℃～1650 ℃ the condition, and final forging temperature is 600 ℃～1500 ℃; Forge when diameter is 10mm～30mm; Use air forging hammer directly to forge to thickness and be flat of the iridium alloy of 5mm～15mm, then with flat of iridium alloy in hydrogen furnace in 800 ℃～1750 ℃ heating 1h～5h, flat of the iridium alloy after will heating again is rolling to desired thickness along width on the sheet metal milling train; Rolling pass reduction is 15%～20%; Every completion is once rolling, with flat of iridium alloy in temperature is to heat 10min～15min under 800 ℃～1650 ℃ the condition, and finishing temperature is 600 ℃～1500 ℃.
2. the processing method of a kind of iridium alloy sheet material according to claim 1 is characterized in that, the thickness of said hot-rolling metal molybdenum plate is 0.2mm～3.5mm.
3. the processing method of a kind of iridium alloy sheet material according to claim 1 is characterized in that, the method for said clad welded is the argon arc welding.
4. the processing method of a kind of iridium alloy sheet material according to claim 1 is characterized in that, the system of said annealing in process is: annealing temperature is 800 ℃～1350 ℃, and annealing time is 30min～60min.
5. the processing method of a kind of iridium alloy sheet material according to claim 1 is characterized in that, said chloroazotic acid is that the hydrochloric acid of nitric acid and the mass concentration 36% of mass concentration 65% forms by 1: 3 volume ratio mixed preparing.
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| CN106077088B (en) * | 2016-06-15 | 2017-11-03 | 哈尔滨工业大学 | The method rolled using TiAl-base alloy wrapping structure |
| CN114029709B (en) * | 2021-12-03 | 2023-02-03 | 中国工程物理研究院核物理与化学研究所 | Forming method of iridium alloy sealing cladding |
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