CN104846221A - Treatment technology for titanium alloy blade of ammonia condenser in nuclear power station - Google Patents
Treatment technology for titanium alloy blade of ammonia condenser in nuclear power station Download PDFInfo
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Abstract
The invention discloses a treatment technology for a titanium alloy blade of an ammonia condenser in a nuclear power station. A blade blank comprises the following alloy materials in percentage by mass: 3.3-4.2 percent of C, 0.2-3.6 percent of Si, 0.3-1.0 percent of Mn, 0-0.1 percent of P, 0-0.05 percent of S, 0.2-3.0 percent of Ni, 0.2-1.5 percent of V, 0.04-0.6 percent of Ti, and the balance of Fe and 0-0.3 percent of microelements such as Cr and Co. The treatment technology comprises the following steps: placing the alloy materials into a melting furnace, and placing a rare-earth element into the melting furnace, wherein the total weight of the rare-earth element is 0.20-0.25 percent of that of the alloy materials, and the rare-earth element comprises the following components in percentage by weight: 15-18 percent of Gd, 3-5 percent of Pr, 7-9 percent of Dy, 12.5-12.8 percent of Ac, 15-20 percent of Nd, 11-13 percent of Sm and the balance of La. The titanium alloy blade has the advantages of high-temperature resistance, corrosion resistance, abrasion resistance, good lubricity and the like, and the deformation and abrasion degree of a die is reduced during a casting process so that the dimensional precision of the titanium alloy blade is improved.
Description
Technical field
The present invention relates to the manufacturing technology field of used in nuclear power station condenser, particularly the treatment process of a kind of nuclear power station ammonia condenser titanium alloy blade.
Background technology
Titanium alloy is a kind of special stainless steel, and main alloy element has chromium, molybdenum, tungsten, cobalt, aluminium, titanium, boron and zirconium etc., and wherein, chromium plays anti-oxidant and anticorrosive effect, and other element plays strengthening effect; Nickel-base alloy has higher intensity, anti-oxidant, resistance to combustion gas corrosion ability etc. under 850-1300 DEG C of high temperature, it is most widely used in superalloy, that hot strength the is the highest class alloy, not only be applied to aerospace, nuclear reactor etc., and be widely used in high temperature component such as aforesaid interchanger and the condenser of energy transition equipment; Relative to known common stainless steel 304, the aspect such as high temperature resistant, corrosion-resistant and anti-oxidant of titanium alloy is that stainless steel 304 cannot match in excellence or beauty with it.
Nuclear power generating sets are often in high temperature, high pressure, high humidity environment, its axle is in continuously in high speed rotating, therefore for the vitals as nuclear power generating sets---water cooler, its material has very high requirement in high temperature resistant, corrosion-resistant, wear-resisting and the performance such as oilness, adaptability; Because nuclear power generating sets work operation life, turnaround etc. all require very long, therefore strict requirement is also had to the life-span of water cooler material, i.e. water cooler, especially heat transfer tube alloy needs to possess higher intensity and hardness, to bear the cyclic load shock and vibration of larger unit load and axle journal.
Manufacturer domestic is at present difficult to produce high performance heat transfer tube alloy, and can only rely on import completely, the water cooler once nuclear power generating sets goes wrong, and can only need to wait for that external manufacturer solves, waste a large amount of human and material resources and financial resources.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of prior art, provides a kind of
In order to solve above technical problem, the invention provides the treatment process of a kind of nuclear power station ammonia condenser titanium alloy blade, comprising following concrete steps:
select titanium alloy blade blank, by mass percentage and comprise: C:3.3-4.2%, Si:0.2-3.6%, Mn:0.3-1.0%, P<0.1%, S<0.05%, Ni:0.2-3.0%, V:0.2-1.5%, Ti:0.04-0.6%, remaining is the trace elements such as Cr, Co of Fe and total amount <0.3%; Dropped in smelting furnace by above-mentioned alloy material, and drop into rare earth element in smelting furnace, the gross weight of rare earth element is the 0.10-0.125% of above-mentioned alloy material; In described Rare Earth Elements, comprise following component by weight percentage: Gd:15-18%, Pr:3-5%, Dy:7-9%, Ac:12.5-12.8%, Nd:15-20%, Sm:11-13%, surplus is La;
smelting furnace temperature rise to 910 DEG C-940 DEG C, fully stirs, and be incubated 1-3h at 910 DEG C-940 DEG C after furnace charge all melts; Above-mentioned alloy liquid is naturally cooled to alloy liquid temperature 880 DEG C-850 DEG C, again add and step
in the rare earth element of same quality; Fully stir to during 800-850 DEG C until alloy liquid greenhouse cooling, and at 800-850 DEG C, add refining agent refining slagging-off 5min-10min;
after Slag treatment, alloy liquid temperature be down to 745-750 DEG C and be incubated 20min-30min, furnace temperature is down to 1130-1140 DEG C, adding refining agent, carry out refinery by de-gassing 5min-10min with argon gas, and alloy liquid homo(io)thermism is cast at 905-910 DEG C;
after casting, blank surface is with after acetone cleaning, being placed on tubular type puts in hydrogen stove, 10-3Pa is evacuated to by stove, 700 DEG C-800 DEG C will be warming up to again in stove, be incubated 15 minutes, be filled with the hydrogen of 0.1-0.3% by the weight percent of titanium alloy blade blank, the flow being filled with hydrogen is 1L/min, insulation 2-4 hour, is then cooled to room temperature by the temperature in stove with the speed of 10 DEG C/min and completes and fill hydrogen process;
first time surperficial blast process is carried out to blank, and on the surface of titanium alloy blade blank, sprays titanium alloy glass lubricant;
mould is positioned over preheating in rotary bottom type shielding gas electric furnace, preheating temperature is 750 DEG C-800 DEG C, is loaded by titanium alloy blade blank in the mould of preheating, then is moved to by mould in the resistance furnace on hydropress and be warming up to 850 DEG C-940 DEG C, insulation 10-20 minute;
forge titanium alloy blade preform, patrix pressing speed 0.08mm/s-0.1mm/s, the process of second time blast is carried out on the surface of rear opposed hydrogen titanium alloy blade forging blank;
the surface of titanium alloy blade forging blank is cleaned successively, dehydrogenation be placed in vacuum heat treatment furnace, in-furnace temperature is risen to 700-800 DEG C, and insulation 5-6 hour, blade cools to room temperature with the furnace, namely obtains hydrogenated titanium alloy forging blade.
Technique effect: the treatment process of nuclear power station ammonia condenser titanium alloy blade in the present invention, the tensile strength of titanium alloy blade can be made to reach more than 100MPa, Brinell hardness can reach more than 45, and ultimate compression strength can reach more than 200MPa, and yield strength can reach more than 95MPa; Adopt the titanium alloy blade after art breading designed by the present invention to possess the advantages such as high temperature resistant, corrosion-resistant, wear-resisting and oilness is good and be filled with protium, make hydrogenated titanium alloy blade when forging, forging temperature can be reduced, thus reduce die deformation and die wear degree, and then improve the dimensional precision of titanium alloy blade.
The present invention devises the treatment process of a kind of nuclear power station ammonia condenser titanium alloy blade, comprises following concrete steps:
select titanium alloy blade blank, by mass percentage and comprise: C:3.3-4.2%, Si:0.2-3.6%, Mn:0.3-1.0%, P<0.1%, S<0.05%, Ni:0.2-3.0%, V:0.2-1.5%, Ti:0.04-0.6%, remaining is the trace elements such as Cr, Co of Fe and total amount <0.3%; Dropped in smelting furnace by above-mentioned alloy material, and drop into rare earth element in smelting furnace, the gross weight of rare earth element is the 0.20-0.25% of above-mentioned alloy material; In described Rare Earth Elements, comprise following component by weight percentage: Gd:15-18%, Pr:3-5%, Dy:7-9%, Ac:12.5-12.8%, Nd:15-20%, Sm:11-13%, surplus is La;
smelting furnace temperature rise to 910 DEG C-940 DEG C, fully stirs, and be incubated 1-3h at 910 DEG C-940 DEG C after furnace charge all melts; Fully stir when above-mentioned alloy liquid is naturally cooled to 800-850 DEG C, and at 800-850 DEG C, add refining agent refining slagging-off 5min-10min;
after Slag treatment, alloy liquid temperature be down to 745-750 DEG C and be incubated 20min-30min, furnace temperature is down to 1130-1140 DEG C, adding refining agent, carry out refinery by de-gassing 5min-10min with argon gas, and alloy liquid homo(io)thermism is cast at 905-910 DEG C;
after casting, blank surface is with after acetone cleaning, being placed on tubular type puts in hydrogen stove, 10-3Pa is evacuated to by stove, 700 DEG C-800 DEG C will be warming up to again in stove, be incubated 15 minutes, be filled with the hydrogen of 0.1-0.3% by the weight percent of titanium alloy blade blank, the flow being filled with hydrogen is 1L/min, insulation 2-4 hour, is then cooled to room temperature by the temperature in stove with the speed of 10 DEG C/min and completes and fill hydrogen process;
first time surperficial blast process is carried out to blank, and on the surface of titanium alloy blade blank, sprays titanium alloy glass lubricant;
mould is positioned over preheating in rotary bottom type shielding gas electric furnace, preheating temperature is 750 DEG C-800 DEG C, is loaded by titanium alloy blade blank in the mould of preheating, then is moved to by mould in the resistance furnace on hydropress and be warming up to 850 DEG C-940 DEG C, insulation 10-20 minute;
forge titanium alloy blade preform, patrix pressing speed 0.08mm/s-0.1mm/s, the process of second time blast is carried out on the surface of rear opposed hydrogen titanium alloy blade forging blank;
the surface of titanium alloy blade forging blank is cleaned successively, dehydrogenation be placed in vacuum heat treatment furnace, in-furnace temperature is risen to 700-800 DEG C, and insulation 5-6 hour, blade cools to room temperature with the furnace, namely obtains hydrogenated titanium alloy forging blade.
The technical scheme that the present invention limits further is:
Further, the treatment process of aforesaid nuclear power station ammonia condenser titanium alloy blade, step
in to be filled with by titanium alloy blade billet weight per-cent 0.25% hydrogen.
The treatment process of aforesaid nuclear power station ammonia condenser titanium alloy blade, step
when middle forging temperature is 800 DEG C, patrix pressing speed is 0.08mm/s.
The treatment process of aforesaid nuclear power station ammonia condenser titanium alloy blade, step
when middle forging temperature is 850 DEG C, patrix pressing speed is 0.095mm/s.
The treatment process of aforesaid nuclear power station ammonia condenser titanium alloy blade, step
when middle forging temperature is 940 DEG C, patrix pressing speed is 0.1mm/s.
Embodiment
embodiment 1
The treatment process of a kind of nuclear power station ammonia condenser titanium alloy blade that the present embodiment provides, comprises following concrete steps:
select titanium alloy blade blank, by mass percentage and comprise: C:3.3-4.2%, Si:0.2-3.6%, Mn:0.3-1.0%, P<0.1%, S<0.05%, Ni:0.2-3.0%, V:0.2-1.5%, Ti:0.04-0.6%, remaining is the trace elements such as Cr, Co of Fe and total amount <0.3%; Dropped in smelting furnace by above-mentioned alloy material, and drop into rare earth element in smelting furnace, the gross weight of rare earth element is the 0.10-0.125% of above-mentioned alloy material; In described Rare Earth Elements, comprise following component by weight percentage: Gd:15-18%, Pr:3-5%, Dy:7-9%, Ac:12.5-12.8%, Nd:15-20%, Sm:11-13%, surplus is La;
smelting furnace temperature rise to 910 DEG C, fully stirs after furnace charge all melts, and is incubated 2h at 910 DEG C; Above-mentioned alloy liquid is naturally cooled to alloy liquid temperature 850 DEG C, again add and step
in the rare earth element of same quality; Fully stir when alloy liquid greenhouse cooling to 850 DEG C, and at 850 DEG C, add refining agent refining slagging-off 5min;
after Slag treatment, alloy liquid temperature be down to 750 DEG C and be incubated 20min, furnace temperature being down to 1140 DEG C, adding refining agent, carrying out refinery by de-gassing 5min with argon gas, and alloy liquid homo(io)thermism is cast at 910 DEG C;
after casting, blank surface is with after acetone cleaning, being placed on tubular type puts in hydrogen stove, 3Pa is evacuated to by stove, 800 DEG C will be warming up to again in stove, be incubated 15 minutes, be filled with the hydrogen of 0.1% by the weight percent of titanium alloy blade blank, the flow being filled with hydrogen is 1L/min, be incubated 4 hours, then the temperature in stove be cooled to room temperature with the speed of 10 DEG C/min and complete and fill hydrogen process;
first time surperficial blast process is carried out to blank, and on the surface of titanium alloy blade blank, sprays titanium alloy glass lubricant;
mould is positioned over preheating in rotary bottom type shielding gas electric furnace, preheating temperature is 750 DEG C, is loaded by titanium alloy blade blank in the mould of preheating, then is moved to by mould in the resistance furnace on hydropress and be warming up to 940 DEG C, be incubated 10 minutes;
forge titanium alloy blade preform, patrix pressing speed 0.1mm/s, the process of second time blast is carried out on the surface of rear opposed hydrogen titanium alloy blade forging blank;
the surface of titanium alloy blade forging blank is cleaned successively, dehydrogenation be placed in vacuum heat treatment furnace, in-furnace temperature is risen to 700 DEG C, be incubated 6 hours, blade cools to room temperature with the furnace, namely obtains hydrogenated titanium alloy forging blade;
The treatment process of aforesaid nuclear power station ammonia condenser titanium alloy blade, step
when middle forging temperature is 800 DEG C, patrix pressing speed is 0.08mm/s.
embodiment 2
The treatment process of a kind of nuclear power station ammonia condenser titanium alloy blade that the present embodiment provides, comprises following concrete steps:
select titanium alloy blade blank, by mass percentage and comprise: C:3.3-4.2%, Si:0.2-3.6%, Mn:0.3-1.0%, P<0.1%, S<0.05%, Ni:0.2-3.0%, V:0.2-1.5%, Ti:0.04-0.6%, remaining is the trace elements such as Cr, Co of Fe and total amount <0.3%; Dropped in smelting furnace by above-mentioned alloy material, and drop into rare earth element in smelting furnace, the gross weight of rare earth element is the 0.20-0.25% of above-mentioned alloy material; In described Rare Earth Elements, comprise following component by weight percentage: Gd:15-18%, Pr:3-5%, Dy:7-9%, Ac:12.5-12.8%, Nd:15-20%, Sm:11-13%, surplus is La;
smelting furnace temperature rise to 940 DEG C, fully stirs after furnace charge all melts, and is incubated 2h at 940 DEG C; Fully stir when above-mentioned alloy liquid is naturally cooled to 820 DEG C, and at 820 DEG C, add refining agent refining slagging-off 8min;
after Slag treatment, alloy liquid temperature be down to 745 DEG C and be incubated 30min, furnace temperature being down to 1130 DEG C, adding refining agent, carrying out refinery by de-gassing 10min with argon gas, and alloy liquid homo(io)thermism is cast at 905 DEG C;
after casting, blank surface is with after acetone cleaning, being placed on tubular type puts in hydrogen stove, 10Pa is evacuated to by stove, 700 are warming up to again by stove, be incubated 15 minutes, be filled with the hydrogen of 0.3% by the weight percent of titanium alloy blade blank, the flow being filled with hydrogen is 1L/min, be incubated 2 hours, then the temperature in stove be cooled to room temperature with the speed of 10 DEG C/min and complete and fill hydrogen process;
first time surperficial blast process is carried out to blank, and on the surface of titanium alloy blade blank, sprays titanium alloy glass lubricant;
mould is positioned over preheating in rotary bottom type shielding gas electric furnace, preheating temperature is 800 DEG C, is loaded by titanium alloy blade blank in the mould of preheating, then is moved to by mould in the resistance furnace on hydropress and be warming up to 850 DEG C, be incubated 20 minutes;
forge titanium alloy blade preform, patrix pressing speed 0.08mm/s, the process of second time blast is carried out on the surface of rear opposed hydrogen titanium alloy blade forging blank;
the surface of titanium alloy blade forging blank is cleaned successively, dehydrogenation be placed in vacuum heat treatment furnace, in-furnace temperature is risen to 800 DEG C, be incubated 5 hours, blade cools to room temperature with the furnace, namely obtains hydrogenated titanium alloy forging blade;
The treatment process of aforesaid nuclear power station ammonia condenser titanium alloy blade, step
when middle forging temperature is 940 DEG C, patrix pressing speed is 0.1mm/s.
embodiment 3
The treatment process of a kind of nuclear power station ammonia condenser titanium alloy blade that the present embodiment provides, comprises following concrete steps:
select titanium alloy blade blank, by mass percentage and comprise: C:3.3-4.2%, Si:0.2-3.6%, Mn:0.3-1.0%, P<0.1%, S<0.05%, Ni:0.2-3.0%, V:0.2-1.5%, Ti:0.04-0.6%, remaining is the trace elements such as Cr, Co of Fe and total amount <0.3%; Dropped in smelting furnace by above-mentioned alloy material, and drop into rare earth element in smelting furnace, the gross weight of rare earth element is the 0.10-0.125% of above-mentioned alloy material; In described Rare Earth Elements, comprise following component by weight percentage: Gd:15-18%, Pr:3-5%, Dy:7-9%, Ac:12.5-12.8%, Nd:15-20%, Sm:11-13%, surplus is La;
smelting furnace temperature rise to 920 DEG C, fully stirs after furnace charge all melts, and is incubated 2h at 920 DEG C; Above-mentioned alloy liquid is naturally cooled to alloy liquid temperature 865 DEG C, again add and step
in the rare earth element of same quality; Fully stir when alloy liquid greenhouse cooling to 825 DEG C, and at 825 DEG C, add refining agent refining slagging-off 6min;
after Slag treatment, alloy liquid temperature be down to 745 DEG C and be incubated 25min, furnace temperature being down to 1135 DEG C, adding refining agent, carrying out refinery by de-gassing 8min with argon gas, and alloy liquid homo(io)thermism is cast at 905 DEG C;
after casting, blank surface is with after acetone cleaning, being placed on tubular type puts in hydrogen stove, 6Pa is evacuated to by stove, 750 DEG C will be warming up to again in stove, be incubated 15 minutes, be filled with the hydrogen of 0.2% by the weight percent of titanium alloy blade blank, the flow being filled with hydrogen is 1L/min, be incubated 3 hours, then the temperature in stove be cooled to room temperature with the speed of 10 DEG C/min and complete and fill hydrogen process;
first time surperficial blast process is carried out to blank, and on the surface of titanium alloy blade blank, sprays titanium alloy glass lubricant;
mould is positioned over preheating in rotary bottom type shielding gas electric furnace, preheating temperature is 755 DEG C, is loaded by titanium alloy blade blank in the mould of preheating, then is moved to by mould in the resistance furnace on hydropress and be warming up to 855 DEG C, be incubated 16 minutes;
forge titanium alloy blade preform, patrix pressing speed 0.09mm/s, the process of second time blast is carried out on the surface of rear opposed hydrogen titanium alloy blade forging blank;
the surface of titanium alloy blade forging blank is cleaned successively, dehydrogenation be placed in vacuum heat treatment furnace, in-furnace temperature is risen to 750 DEG C, be incubated 5.5 hours, blade cools to room temperature with the furnace, namely obtains hydrogenated titanium alloy forging blade;
The treatment process of aforesaid nuclear power station ammonia condenser titanium alloy blade, step
when middle forging temperature is 850 DEG C, patrix pressing speed is 0.095mm/s.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (6)
1. a treatment process for nuclear power station ammonia condenser titanium alloy blade, is characterized in that, comprises following concrete steps:
select titanium alloy blade blank, by mass percentage and comprise: C:3.3-4.2%, Si:0.2-3.6%, Mn:0.3-1.0%, P<0.1%, S<0.05%, Ni:0.2-3.0%, V:0.2-1.5%, Ti:0.04-0.6%, remaining is the trace elements such as Cr, Co of Fe and total amount <0.3%; Dropped in smelting furnace by above-mentioned alloy material, and drop into rare earth element in smelting furnace, the gross weight of described rare earth element is the 0.10-0.125% of above-mentioned alloy material; In described Rare Earth Elements, comprise following component by weight percentage: Gd:15-18%, Pr:3-5%, Dy:7-9%, Ac:12.5-12.8%, Nd:15-20%, Sm:11-13%, surplus is La;
smelting furnace temperature rise to 910 DEG C-940 DEG C, fully stirs, and be incubated 1-3h at 910 DEG C-940 DEG C after furnace charge all melts; Above-mentioned alloy liquid is naturally cooled to alloy liquid temperature 880 DEG C-850 DEG C, again add and step
in the rare earth element of same quality; Fully stir to during 800-850 DEG C until alloy liquid greenhouse cooling, and at 800-850 DEG C, add refining agent refining slagging-off 5min-10min;
after Slag treatment, alloy liquid temperature be down to 745-750 DEG C and be incubated 20min-30min, furnace temperature is down to 1130-1140 DEG C, adding refining agent, carry out refinery by de-gassing 5min-10min with argon gas, and alloy liquid homo(io)thermism is cast at 905-910 DEG C;
after casting, blank surface is with after acetone cleaning, being placed on tubular type puts in hydrogen stove, 10-3Pa is evacuated to by stove, 700 DEG C-800 DEG C will be warming up to again in stove, be incubated 15 minutes, be filled with the hydrogen of 0.1-0.3% by the weight percent of titanium alloy blade blank, the flow being filled with hydrogen is 1L/min, insulation 2-4 hour, is then cooled to room temperature by the temperature in stove with the speed of 10 DEG C/min and completes and fill hydrogen process;
first time surperficial blast process is carried out to blank, and on the surface of titanium alloy blade blank, sprays titanium alloy glass lubricant;
mould is positioned over preheating in rotary bottom type shielding gas electric furnace, preheating temperature is 750 DEG C-800 DEG C, is loaded by titanium alloy blade blank in the mould of preheating, then is moved to by mould in the resistance furnace on hydropress and be warming up to 850 DEG C-940 DEG C, insulation 10-20 minute;
forge titanium alloy blade preform, patrix pressing speed 0.08mm/s-0.1mm/s, the process of second time blast is carried out on the surface of rear opposed hydrogen titanium alloy blade forging blank;
the surface of titanium alloy blade forging blank is cleaned successively, dehydrogenation be placed in vacuum heat treatment furnace, in-furnace temperature is risen to 700-800 DEG C, and insulation 5-6 hour, blade cools to room temperature with the furnace, namely obtains hydrogenated titanium alloy forging blade.
2. a treatment process for nuclear power station ammonia condenser titanium alloy blade, is characterized in that, comprises following concrete steps:
select titanium alloy blade blank, by mass percentage and comprise: C:3.3-4.2%, Si:0.2-3.6%, Mn:0.3-1.0%, P<0.1%, S<0.05%, Ni:0.2-3.0%, V:0.2-1.5%, Ti:0.04-0.6%, remaining is the trace elements such as Cr, Co of Fe and total amount <0.3%; Dropped in smelting furnace by above-mentioned alloy material, and drop into rare earth element in smelting furnace, the gross weight of described rare earth element is the 0.20-0.25% of above-mentioned alloy material; In described Rare Earth Elements, comprise following component by weight percentage: Gd:15-18%, Pr:3-5%, Dy:7-9%, Ac:12.5-12.8%, Nd:15-20%, Sm:11-13%, surplus is La;
smelting furnace temperature rise to 910 DEG C-940 DEG C, fully stirs, and be incubated 1-3h at 910 DEG C-940 DEG C after furnace charge all melts; Fully stir when above-mentioned alloy liquid is naturally cooled to 800-850 DEG C, and at 800-850 DEG C, add refining agent refining slagging-off 5min-10min;
after Slag treatment, alloy liquid temperature be down to 745-750 DEG C and be incubated 20min-30min, furnace temperature is down to 1130-1140 DEG C, adding refining agent, carry out refinery by de-gassing 5min-10min with argon gas, and alloy liquid homo(io)thermism is cast at 905-910 DEG C;
after casting, blank surface is with after acetone cleaning, being placed on tubular type puts in hydrogen stove, 10-3Pa is evacuated to by stove, 700 DEG C-800 DEG C will be warming up to again in stove, be incubated 15 minutes, be filled with the hydrogen of 0.1-0.3% by the weight percent of titanium alloy blade blank, the flow being filled with hydrogen is 1L/min, insulation 2-4 hour, is then cooled to room temperature by the temperature in stove with the speed of 10 DEG C/min and completes and fill hydrogen process;
first time surperficial blast process is carried out to blank, and on the surface of titanium alloy blade blank, sprays titanium alloy glass lubricant;
mould is positioned over preheating in rotary bottom type shielding gas electric furnace, preheating temperature is 750 DEG C-800 DEG C, is loaded by titanium alloy blade blank in the mould of preheating, then is moved to by mould in the resistance furnace on hydropress and be warming up to 850 DEG C-940 DEG C, insulation 10-20 minute;
forge titanium alloy blade preform, patrix pressing speed 0.08mm/s-0.1mm/s, the process of second time blast is carried out on the surface of rear opposed hydrogen titanium alloy blade forging blank;
the surface of titanium alloy blade forging blank is cleaned successively, dehydrogenation be placed in vacuum heat treatment furnace, in-furnace temperature is risen to 700-800 DEG C, and insulation 5-6 hour, blade cools to room temperature with the furnace, namely obtains hydrogenated titanium alloy forging blade.
3. the treatment process of nuclear power station according to claim 1 and 2 ammonia condenser titanium alloy blade, is characterized in that: step
in to be filled with by titanium alloy blade billet weight per-cent 0.25% hydrogen.
4. the treatment process of nuclear power station according to claim 1 and 2 ammonia condenser titanium alloy blade, is characterized in that: step
when middle forging temperature is 800 DEG C, patrix pressing speed is 0.08mm/s.
5. the treatment process of nuclear power station according to claim 1 and 2 ammonia condenser titanium alloy blade, is characterized in that: step
when middle forging temperature is 850 DEG C, patrix pressing speed is 0.095mm/s.
6. the treatment process of nuclear power station according to claim 1 and 2 ammonia condenser titanium alloy blade, is characterized in that: step
when middle forging temperature is 940 DEG C, patrix pressing speed is 0.1mm/s.
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| CN105755316A (en) * | 2016-04-29 | 2016-07-13 | 江苏金源腾峰换热设备有限公司 | Treatment technology of anti-ash-deposition and anti-wear alloy material of waste heat recovery pipeline |
| CN105755317A (en) * | 2016-04-29 | 2016-07-13 | 江苏金源腾峰换热设备有限公司 | Treating technology for low temperature resistance and corrosion resistance boiler tail gas pipeline alloy |
| CN107514291A (en) * | 2017-09-30 | 2017-12-26 | 南京赛达机械制造有限公司 | A kind of turbine blade of resistance to water erosion and preparation method thereof |
| CN107514291B (en) * | 2017-09-30 | 2023-10-03 | 南京赛达机械制造有限公司 | Water erosion resistant turbine blade and preparation method thereof |
| CN110202015A (en) * | 2019-07-15 | 2019-09-06 | 太原科技大学 | A kind of method of the compound near-net-shape of titanium alloy thin wall profile extrusion drawing |
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