CN101956198A - Surface composite strengthening technology for precipitation hardening stainless steel and precipitation hardening stainless steel material - Google Patents
Surface composite strengthening technology for precipitation hardening stainless steel and precipitation hardening stainless steel material Download PDFInfo
- Publication number
- CN101956198A CN101956198A CN 201010505319 CN201010505319A CN101956198A CN 101956198 A CN101956198 A CN 101956198A CN 201010505319 CN201010505319 CN 201010505319 CN 201010505319 A CN201010505319 A CN 201010505319A CN 101956198 A CN101956198 A CN 101956198A
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- laser
- solid solution
- alloying
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000010935 stainless steel Substances 0.000 title claims abstract description 36
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 36
- 239000000463 material Substances 0.000 title claims abstract description 25
- 238000005516 engineering process Methods 0.000 title claims abstract description 24
- 238000005728 strengthening Methods 0.000 title claims abstract description 20
- 239000002131 composite material Substances 0.000 title abstract description 5
- 238000004881 precipitation hardening Methods 0.000 title abstract 4
- 238000005275 alloying Methods 0.000 claims abstract description 34
- 239000006104 solid solution Substances 0.000 claims abstract description 31
- 238000011282 treatment Methods 0.000 claims abstract description 28
- 238000012545 processing Methods 0.000 claims abstract description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 19
- 239000000956 alloy Substances 0.000 claims description 19
- 239000000243 solution Substances 0.000 claims description 15
- 239000011159 matrix material Substances 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 230000006798 recombination Effects 0.000 claims description 11
- 238000005215 recombination Methods 0.000 claims description 11
- 230000001360 synchronised effect Effects 0.000 claims description 11
- 230000032683 aging Effects 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- 238000007605 air drying Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 230000001376 precipitating effect Effects 0.000 claims description 2
- 229910052702 rhenium Inorganic materials 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 14
- 238000001556 precipitation Methods 0.000 abstract description 4
- 238000013532 laser treatment Methods 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract 1
- 230000008569 process Effects 0.000 description 10
- 230000003628 erosive effect Effects 0.000 description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 230000002929 anti-fatigue Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005256 carbonitriding Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Heat Treatment Of Articles (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a surface composite strengthening technology for precipitation hardening stainless steel and a precipitation hardening stainless steel material processed by the technology. In the technology, two laser beams are utilized to carry out controllable selection deep-layer solid solution and alloying composite strengthening treatment on a substrate synchronously, thus solving the problem existing when two techniques of solid solution and alloying are synchronously composited, and the invention also provides a laser treatment method which not only has high local fatigue resistance and high solid solution strengthening depth but also obtains higher surface hardness, wear resistance and anti-cavitation performance, so that the overall strengthening layer depth, performance and hardening gradient of the material at a processing area are controlled, and the application range of the precipitation stainless steel is enlarged.
Description
Technical field
The present invention relates to a kind of PH Stainless Steel material, relate in particular to a kind of surface recombination reinforcing technology of PH Stainless Steel.
Background technology
PH Stainless Steel, have that specific tenacity is big, yield tensile ratio is high, toughly have both, advantage such as elastic performance excellence, solidity to corrosion and Heat stability is good, processing forming and welding property are good, now be widely used in key areas such as Aeronautics and Astronautics, machinofacture, nuclear power.Especially have carbon-free martensitic transformation and strengthen and the synergetic high strength aged stainless steel of two kinds of effects of ageing strengthening, be widely used in the important component of industrial important equipment such as large vol turbine component, nuclear reactor component, rocket motor case, guided missile and aircraft or weapon.Undertaking key player in modern industry or the national defence by the component of such material manufacturing, their inefficacy is fatal often, will bring about great losses.These inefficacies have a common feature, and promptly the failure modes such as wearing and tearing, fatigue and corrosion by local location cause.
Present whole solution treatment generally adopts solid solution to add the technology of timeliness, and promptly elder generation is incubated more than whole workpiece is heated to the solvus temperature, obtains homogeneous single phase sosoloid, is chilled to room temperature then soon and obtains supersaturated solid solution; Again the alloy after the solution treatment is heated to below the solvus and realizes that precipitation decomposes behind a certain temperature insulation certain hour, realize strengthening by separating out copper-rich phase (e-Cu) and carbide etc.The ordinary method that is used for surface Hardening Treatment mainly contains surface carburization or carbonitriding, metallic cementation, thermospray etc.
Whole solution treatment and conventional surface treatment are that vital role has been brought into play in the performance excavation of PH Stainless Steel, yet no matter be whole solution treatment or surface treatment, along with going deep into of research, problem begins to manifest: (1) both can not need integral body to be heated to high temperature with avoiding, and long-time insulation, this process not only cost height, energy consumption is big, and the oxidation in heat and the process of cooling, workpiece deformation be difficult to avoid, and performance is difficult to guarantee; The whole heating of secondary during (2) owing to surface treatments such as nitriding or titaniums certainly will exert an influence mutually to original matrix solid solution precipitation strength.In addition, the thickness of latter's surface strengthen layer relatively approaches (being generally micron order); If also there is the danger of disbonding in the employing spraying method.Along with improving constantly of single-machine capacity, the largest circumference speed of steel blade has been brought up to more than the 650m/s, the stress level of blade is higher, conventional surface heat treatment technicss such as carbide inserts, high frequency quenching, flame harden, though improve rotor blade anti-impact cavitation erosion ability, all being accompanied by sacrifice blade-section fatigue strength performance is cost.In the face of the phenomenon of such serious day by day important spare part partial failure, whole solid solution or conventional process for treating surface obviously can't adapt to.
In the LASER HEAT TREATMENT Application Areas, utilize laser solid solution or alloying process that turbine blade has been had relevant report.Publication number is the laser reinforcing process that the patent documentation of CN1740350A discloses a kind of turbine blade leading edge, it relates to laser solid solution technology, cavitation resistive property increases after treatment, but the hardness on top layer does not reach to optimal state, work through about 1 year approximately, surface begin to occur imperceptible cavitation erosion pit.In case and the characteristics of cavitation erosion are age spot to occur, the speed of cavitation erosion will be accelerated.Obviously require attrition resistant parts for blade that runs up or top layer, its surface hardness is not high enough.In addition, publication number is PH Stainless Steel and preparation technology and the application that the patent documentation of CN100500940C discloses a kind of surface laser alloying, what it related to is the laser alloying technology, though after treatment, the surface hardness of PH Stainless Steel significantly improves, and cavitation resistive property is also improved significantly.But because this type of material produces transformation hardening hardly, the sudden change of the hardness of alloying layer and matrix be and the degree of depth of alloying layer more shallow.For the long blade leading edge under the high-speed cruising, the cavitation erosion age spot promptly appears in this position after operation in two, three years, because it does not have 2Cr13 class material than inferior top layer transition layer of hardness, in a single day alloying layer is passed in cavitation erosion, the hardness of matrix subsequently is low again, and cavitation erosion speed is obviously accelerated.Therefore, for the blade of this type of material, single laser processing method still can not satisfy the requirement of actual blade.
Summary of the invention
The contriver thinks that optimal Hardness Distribution should be a top layer tool high rigidity, to prolong the time that the plain silk fabrics cavitation erosion penetrates alloying layer; Inferior top layer has certain depth and hardness again, and such combination can significantly improve the cavitation resistive property of material.Yet, in the test of practical application, adopting first laser solution treatment, surface oxide layer is removed in polishing again, presets alloy powder coating, Laser Alloying Treatment, the complex techniques process of ageing treatment.And owing to be divided into secondary treatment, the blade clamping is not had repeatability, solid solution layer and is not overlapped with alloying layer; Solid solution after the polishing leaf temperature in room temperature, the energy consumption of its Alloying Treatment is higher.Therefore, the present invention proposes solid solution of controlled constituency property deep layer and the synchronous complex intensifying technology of alloying, and high performance requirements, the technology that can satisfy this type of material blade are reliable, can save energy and reduce the cost again, improves cost performance of product.Also there is not any report in the prior art to this type of PH Stainless Steel material laser deep layer solid solution and the synchronous complex intensifying technology of alloying.
Can't satisfy the good performance demands of PH Stainless Steel material needed local strengthening layer depth drawn game quality award from the ministry simultaneously at Conventional Heat Treatment or process of surface treatment and laser solid solution and alloying, the present invention propose a kind of with laser as thermal source, the workpiece of this type of material manufacturing is carried out controlled constituency property deep layer solid solution and alloying composite reinforcement process.The objective of the invention is to solve the difficult problem of solid solution and two kinds of synchronous compound existence of technology of alloying, and a kind of both the had local highly anti-fatigue intensity and the solution strengthening degree of depth be provided, obtain the laser processing method of high surfaces hardness, wear-resistant and cavitation resistive property simultaneously again.The overall strengthening layer degree of depth of treatment zone material, performance, sclerosis gradient are controlled, enlarged the stainless use range of precipitation.
To achieve the above object, the present invention has adopted following technical scheme:
A kind of surface recombination reinforcing technology of PH Stainless Steel comprises the steps:
(1) surface of washing and precipitating hardening stainless steel matrix treatment zone, air drying;
(2) the surface-coated alloy coat of the PH Stainless Steel matrix treatment zone after cleaning;
(3) treat the alloy coat drying after, utilize laser apparatus to carry out deep layer solid solution of laser surface constituency and top layer alloy strengthening synchronous processing; The first bundle laser beam carries out the laser solid solution, and its power density is 500～2000W/cm
2, laser solid solution blanketing with inert gas simultaneously solution treatment district; The second bundle laser beam carries out laser alloying, and its power density is 4～9kW/cm
2Two bundle laser beam between centers are 50～100mm, and the synchronous translational speed of two bundle laser beams is 100～400mm/min;
(4) carry out ageing treatment at last, aging temperature is 400 ℃-570 ℃, and the ageing treatment time is 2.0～5.0h.
As preferably, the weight percent of above-mentioned alloy coat is: Cr 15～20%, Ni 10～15%, W 6～8%, Fe 7～8%, Si 1.2～1.5%, V 0.5～0.8%, Re 0.1%, surplus Co, granularity is 1～6 μ m.
As preferably, the spot size scope of the above-mentioned first bundle laser beam (solid solution) be (8～20) mm * (6～12) mm, and the second spot size scope of restrainting laser beam (alloying) is (8～20) mm * (1～5) mm.
Described PH Stainless Steel matrix is stainless materials such as 0Cr17Ni4Cu4Nb (17-4PH) or X5CrNiCuNb16-4.Described laser apparatus is crossing current CO
2Laser apparatus.
According to the PH Stainless Steel material of above-mentioned surface recombination reinforcing prepared, laser surface solid solution and alloying controllable thickness, its top layer is that thickness is the alloying strengthening layer of 0.1～0.2mm, secondly the top layer is that thickness is the solution strengthening layer of 1～3mm.
The present invention has the following advantages:
1, such scheme creatively combines two kinds of technology of solid solution and alloying, the PH Stainless Steel matrix is carried out controlled constituency property deep layer solid solution and the synchronous complex intensifying of alloying, thereby a kind of both the had local highly anti-fatigue intensity and the solution strengthening degree of depth are provided, obtain simultaneously the laser processing method of high surfaces hardness, wear-resistant and cavitation resistive property again.Overcome in the prior art, can't carry out the technology prejudice of synchronous processing than big-difference because of solid solution and two kinds of treatment process of alloying.
2, such scheme is by applying the oxidation that protection of inert gas (promptly adding co-axial gas shield device between two bundle laser beams) prevents powdered alloy in the solution treatment district after the first bundle laser beam treatment; guarantee the performance of laser alloying coating, can play the effect of suitable cooling solid solution layer simultaneously again.Avoided the first bundle light to carry out not adding the protection refrigerating unit after the solid solution, and the second bundle light directly carry out alloying, after this can cause the laser solid solution, the oxidation of powdered alloy, influence alloying layer performance subsequently.
3, such scheme is by adding rare earth element Re in powdered alloy, suppress grain growth, crystal grain thinning, and the anti-tempered performance of raising alloy layer improve material surface hardness and cavitation resistive property with this, after avoiding Combined Processing to finish, when material was carried out ageing treatment, because tempering takes place the alloy layer tissue, tissue can be grown up, and may cause hard phase decomposition wherein, reduce the hardness of alloy layer.
4, the PH Stainless Steel material after employing such scheme laser complex intensifying is handled, matrix top layer and powdered alloy form the ideal metallurgical binding, and surface quality is good, and flawless is shaped.Its hardness is significantly improved than matrix, and the hardness of alloying layer is at HV
0.2500-800, the degree of depth is 0.1-0.2mm; The hardness of the solution strengthening layer on inferior top layer is at HV
0.2400-500, the degree of depth is 1-3mm.Adopt such scheme, improved the stainless reinforcement hardness of 17-4PH and the degree of depth, the wear-resisting cavitation resistive property that undermines, widened this type of stainless range of application greatly.
Description of drawings
Fig. 1 is that property solid solution of laser of the present invention constituency and alloying deep layer complex intensifying are handled synoptic diagram;
Fig. 2 is the PH Stainless Steel material reinforcement layer synoptic diagram after composite reinforcement process of the present invention is handled;
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is made a detailed explanation.
Embodiment 1:
The surface recombination reinforcing technology of a kind of PH Stainless Steel as shown in Figure 1, wherein, 1 is the first bundle laser beam, and 2 is the second bundle laser beam, and 3 and 4 are gas shield device, and 5 is laser beam direction of motion, 6 is workpiece.Workpiece 6 materials are the 17-4PH stainless steel, after surperficial acetone through 98% cleans 2 times, presetting one deck width is that 16mm, thickness are the alloy coat of 0.4mm, composition is W6%, Cr19%, Ni10%, Fe7%, Si1.2%, V0.8%, Re0.1%, surplus Co, after to be dried, carry out laser treatment.
The laser beam source is CO
2Laser apparatus, its wavelength are 10.6 μ m, and the power density of the first bundle laser beam is 1.875kW/cm
2, spot size is 16mm * 10mm, protective medium is an argon gas.The power density of the second bundle laser beam is 6kW/cm
2, spot size is 16mm * 3mm, synchronous scanning speed is 200mm/min.Processing through 440 ℃/2 hours.The maximum hardness that obtains the top layer at last is HV
0.2: 740; Average hardness is HV
0.2: 540; The degree of depth is the alloying layer of 110 μ m; Secondly be HV for average hardness
0.2430, the degree of depth is the solution strengthening layer of 2.0mm.Cavitation resistive property improves about 2 times than protocorm.
Workpiece complex intensifying layer as shown in Figure 2, wherein, 61 is matrix, 62 is the heat affected zone, 63 is laser solution strengthening layer, 64 is laser alloying coating.
Embodiment 2:
In material is that coating one deck width is that 12mm, thickness are the alloy coat of 0.5mm on the 17-4PH stainless steel base, and composition is: W8%, Cr20%, Ni12%, Fe8%, Si1.5%, V0.5%, Re0.1%, surplus Co.After the drying, again through laser treatment, the power density 1.625kW/cm of first light beam
2, spot size 12mm * 8mm, heat-eliminating medium are argon gas.Aging temp is 440 ℃, 4h; The power density 9kWcm of second light beam
2, spot size 12mm * 1mm, synchronous scanning speed is 300mm/min.Obtaining alloying top layer average hardness at last is HV
0.2650, hardened layer is 150 μ m; Inferior top layer average hardness is HV
0.2410, hardened-depth is 1.5mm, and cavitation resistive property improves about 3 times than protocorm.
Claims (6)
1. the surface recombination reinforcing technology of a PH Stainless Steel is characterized in that, comprises the steps:
(1) surface of washing and precipitating hardening stainless steel matrix treatment zone, air drying;
(2) the surface-coated alloy coat of the PH Stainless Steel matrix treatment zone after cleaning;
(3) treat the alloy coat drying after, utilize laser apparatus to carry out deep layer solid solution of laser surface constituency and top layer alloy strengthening synchronous processing; The first bundle laser beam carries out the laser solid solution, and its power density is 500～2000W/cm
2, laser solid solution blanketing with inert gas simultaneously solution treatment district; The second bundle laser beam carries out laser alloying, and its power density is 4～9kW/cm
2Two bundle laser beam between centers are 50～100mm, and the synchronous translational speed of two bundle laser beams is 100～400mm/min;
(4) carry out ageing treatment at last, aging temperature is 400 ℃～570 ℃, and the ageing treatment time is 2.0～5.0h.
2. the surface recombination reinforcing technology of a kind of PH Stainless Steel according to claim 1, it is characterized in that, the weight percent of described alloy coat is: Cr 15～20%, Ni10～15%, W 6～8%, Fe7～8%, Si 1.2～1.5%, V 0.5～0.8%, Re 0.1%, surplus Co, granularity is 1～6 μ m.
3. the surface recombination reinforcing technology of a kind of PH Stainless Steel according to claim 1, it is characterized in that, the spot size scope of the described first bundle laser beam is (8～20) mm * (6～12) mm, and the spot size scope of the second bundle laser beam is (8～20) mm * (1～5) mm.
4. the surface recombination reinforcing technology of a kind of PH Stainless Steel according to claim 1 is characterized in that, described PH Stainless Steel matrix is the 17-4PH stainless material.
5. the surface recombination reinforcing technology of a kind of PH Stainless Steel according to claim 1 is characterized in that, described laser apparatus is crossing current CO
2Laser apparatus.
6. according to the PH Stainless Steel material of each described surface recombination reinforcing prepared in the claim 1 to 5, its top layer is that thickness is the alloying strengthening layer of 0.1～0.2mm, and secondly the top layer is that thickness is the solution strengthening layer of 1～3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105053191A CN101956198B (en) | 2010-10-13 | 2010-10-13 | Surface composite strengthening technology for precipitation hardening stainless steel and precipitation hardening stainless steel material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105053191A CN101956198B (en) | 2010-10-13 | 2010-10-13 | Surface composite strengthening technology for precipitation hardening stainless steel and precipitation hardening stainless steel material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101956198A true CN101956198A (en) | 2011-01-26 |
| CN101956198B CN101956198B (en) | 2012-02-29 |
Family
ID=43483779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105053191A Expired - Fee Related CN101956198B (en) | 2010-10-13 | 2010-10-13 | Surface composite strengthening technology for precipitation hardening stainless steel and precipitation hardening stainless steel material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101956198B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168210A (en) * | 2011-04-07 | 2011-08-31 | 杭州博华激光技术有限公司 | Laser cladding technological method and alloy material for laser cladding |
| CN103042759A (en) * | 2012-09-27 | 2013-04-17 | 浙江工业大学 | Strengthened coating in sandwich-like structure on surface of precipitation hardening stainless steel |
| CN104964655A (en) * | 2015-06-01 | 2015-10-07 | 东旭集团有限公司 | Glass chemical strengthening treatment depth testing method |
| CN105745337A (en) * | 2013-12-02 | 2016-07-06 | 陶氏环球技术有限责任公司 | Precipitation hardening of tantalum coated metals |
| CN108977626A (en) * | 2018-08-22 | 2018-12-11 | 哈尔滨工程大学 | The laser quenching on steam turbine blade surface and ageing treatment composite strengthening method |
| CN111500831A (en) * | 2020-06-12 | 2020-08-07 | 山东建筑大学 | A kind of heat treatment process of 17-4PH base |
| CN111730014A (en) * | 2020-06-24 | 2020-10-02 | 江阴振宏重型锻造有限公司 | Method for reducing surface cracking of 17-4PH forging |
| CN114214493A (en) * | 2021-12-06 | 2022-03-22 | 北京科技大学 | A kind of high-strength corrosion-resistant steel slewing bearing race and its surface wear-resistant strengthening treatment method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1670226A (en) * | 2004-03-17 | 2005-09-21 | 浙江工业大学 | Laser Strengthening Technology for Metal Surface of Water Pump Parts |
| CN1912182A (en) * | 2006-08-11 | 2007-02-14 | 杭州博华激光技术有限公司 | Precipitation hardening stainless steel of surface laser alloy and its preparation process and application |
| CN101089201A (en) * | 2006-06-16 | 2007-12-19 | 中国科学院金属研究所 | A laser surface hardening process for precipitation hardening stainless steel |
-
2010
- 2010-10-13 CN CN2010105053191A patent/CN101956198B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1670226A (en) * | 2004-03-17 | 2005-09-21 | 浙江工业大学 | Laser Strengthening Technology for Metal Surface of Water Pump Parts |
| CN101089201A (en) * | 2006-06-16 | 2007-12-19 | 中国科学院金属研究所 | A laser surface hardening process for precipitation hardening stainless steel |
| CN1912182A (en) * | 2006-08-11 | 2007-02-14 | 杭州博华激光技术有限公司 | Precipitation hardening stainless steel of surface laser alloy and its preparation process and application |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168210A (en) * | 2011-04-07 | 2011-08-31 | 杭州博华激光技术有限公司 | Laser cladding technological method and alloy material for laser cladding |
| CN103042759B (en) * | 2012-09-27 | 2015-10-07 | 浙江工业大学 | A kind of class sandwich structure strengthened coat of precipitate hardened stainless steel face |
| CN103042759A (en) * | 2012-09-27 | 2013-04-17 | 浙江工业大学 | Strengthened coating in sandwich-like structure on surface of precipitation hardening stainless steel |
| US9963757B2 (en) | 2013-12-02 | 2018-05-08 | Dow Global Technologies Llc | Precipitation hardening of tantalum coated metals |
| CN105745337A (en) * | 2013-12-02 | 2016-07-06 | 陶氏环球技术有限责任公司 | Precipitation hardening of tantalum coated metals |
| CN105745337B (en) * | 2013-12-02 | 2018-06-19 | 陶氏环球技术有限责任公司 | The precipitation-hardening of the metal of tantalum coating |
| CN104964655B (en) * | 2015-06-01 | 2017-11-07 | 东旭科技集团有限公司 | A kind of chemically enhancing glass handles the method for testing of depth |
| CN104964655A (en) * | 2015-06-01 | 2015-10-07 | 东旭集团有限公司 | Glass chemical strengthening treatment depth testing method |
| CN108977626A (en) * | 2018-08-22 | 2018-12-11 | 哈尔滨工程大学 | The laser quenching on steam turbine blade surface and ageing treatment composite strengthening method |
| CN111500831A (en) * | 2020-06-12 | 2020-08-07 | 山东建筑大学 | A kind of heat treatment process of 17-4PH base |
| CN111730014A (en) * | 2020-06-24 | 2020-10-02 | 江阴振宏重型锻造有限公司 | Method for reducing surface cracking of 17-4PH forging |
| CN111730014B (en) * | 2020-06-24 | 2022-03-01 | 江阴振宏重型锻造有限公司 | Method for reducing surface cracking of 17-4PH forging |
| CN114214493A (en) * | 2021-12-06 | 2022-03-22 | 北京科技大学 | A kind of high-strength corrosion-resistant steel slewing bearing race and its surface wear-resistant strengthening treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101956198B (en) | 2012-02-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101956198B (en) | Surface composite strengthening technology for precipitation hardening stainless steel and precipitation hardening stainless steel material | |
| CN105543649B (en) | A kind of three layer clad sheet steel and its manufacture method | |
| CN103194684B (en) | A kind of wear-resisting steel plate and manufacture method thereof | |
| CN101519778A (en) | Laser cladding method for strengthening surface of piercing point | |
| CN1985019B (en) | Method for producing wear-resistant and fatigue-resistant edge layers in titanium alloys and components produced therefrom | |
| CN104087867B (en) | A kind of ball mill high abrasion antioxidant wear-resistant ball | |
| US6511559B2 (en) | Process for producing wear-resistant edge layers in precipitation-hardenable materials | |
| CN102505098B (en) | Low-alloy heat-resistant high-strength steel and member thereof | |
| CN108315734A (en) | A kind of process improving laser melting coating aluminium bronze gradient coating performance | |
| Luo et al. | Progress and perspective of ultra-high strength steels having high toughness | |
| Okechukwu et al. | Prominence of Hadfield steel in mining and minerals industries: A review | |
| CN101381839A (en) | High strength and ductility alloy steel and heat treatment technology thereof | |
| Cao et al. | Effect of scanning speed during PTA remelting treatment on the microstructure and wear resistance of nodular cast iron | |
| CN111041406A (en) | A composite process method for improving the anti-wear/fatigue performance of engine gears | |
| CN108103275B (en) | A kind of processing method of wear-resistant liner steel alloy | |
| CN100467626C (en) | Surface Aging Treatment Method for Improving Initial Wear Resistance of High Manganese Steel | |
| CN108085607B (en) | A kind of HP lining plate of coal grinder | |
| CN105331986A (en) | Laser-chemical combined infiltration process for low-alloy steel die | |
| Yao et al. | Laser hardening techniques on steam turbine blade and application | |
| UTOPOV | Surface modifications of maraging steels used in the manufacture of moulds and dies | |
| CN106939403B (en) | The method of 1Cr9Mo1VNbN material nozzle of steam turbine boronising | |
| CN107904506B (en) | A kind of wear-resistant liner steel alloy | |
| CN104630649A (en) | Low-alloy, heat-resistant and high-strength steel and member thereof | |
| EP3155134A1 (en) | Method of heat treatment of bearing steel | |
| CN113564455B (en) | Preparation method of low-alloy hammer head for rotary radial precision cold forging machine tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120229 |