CN101412066A - Hammer forging technique of GH4169 alloy dish - Google Patents
Hammer forging technique of GH4169 alloy dish Download PDFInfo
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Abstract
The invention provides a hammer forging process for a GH4169 alloy disk. The process is characterized in that: a sheathing method is adopted; a counter blow hammer is forged by a high-quality GH4169 alloy high-strength disk for an engine and a direct aging disk; the sheathing adopts a low-carbon steel plate and an aluminum silicate fibrofelt; before sheathing, the surface of a biscuit is sprayed with glass lubricant; and after the biscuit is sheathed by the aluminum silicate fibrofelt, an outer layer is sheathed by the low-carbon steel plate. The process has the advantages that: once heat deformation and high deformation speed facilitate dynamic recrystallization of metal and make grain size of a disk forged piece thin and uniform and the forged piece generate stronger deformation strengthening effect, so that the forged piece has high strength and good comprehensive performance; and, the process is widely applied to aviation, spaceflight and nuclear energy; moreover, the process will be thoroughly popularized and used, thereby having wide application prospect.
Description
Technical field
The present invention relates to the forging field, a kind of hammer forging technique of GH4169 alloy disc is provided especially.
Background technology
High-quality GH4169 alloy is γ, and " mutually with the γ ' Ni-Cr-Fe based high-temperature alloy of ageing strengthening mutually, this alloy has high intensity, enduring quality, fatigue and croop property at low temperature with below 650 ℃; It also has good welding performance and hot-working character simultaneously.The GH4169 alloy forged piece can be divided into GH4169 alloy common forgings according to the difference of its heat processing technique, high-strength forging and direct aging forging, and certain machine is high-strength and the direct aging forging with high-quality GH4169 alloy disc.GH4169 alloy direct aging and high-strength compressor disc forging adopt the hot forging explained hereafter abroad on hydraulic press.At the reseach of engine initial stage, because the restriction of capacity of equipment and working condition, can only on 3 ton water hydraulic presses, 63T.M and 100T.M counter-blow hammer, forge production, especially on 63T.M and 100T.M counter-blow hammer, forge the production disk forge piece, this did not also produce abroad, and China adopts to forge the aero-engine disk forge piece first on counter-blow hammer.
Summary of the invention
The hammer forging technique that the purpose of this invention is to provide a kind of GH4169 alloy disc.
GH4169 alloying component and ratio are: carbon 0.015-0.060%, chromium 17-21%, molybdenum 2.8-3.0%, niobium 5.00-5.55%, titanium 0.75-1.15%, aluminium 0.30-0.70%, nickel 50.00-55.00%, surplus is an iron, cobalt≤1.00%, manganese≤0.35, silicon≤0.35.
The invention provides a kind of hammer forging technique of GH4169 alloy disc, it is characterized in that: the hammer forging technique of described GH4169 alloy disc is the method that adopts jacket, on counter-blow hammer, carry out the forging of engine with high-quality high-strength dish of GH4169 alloy and direct aging dish, jacket is to adopt low carbon steel plate and thick alumina silicate fiber felt jacket, the biscuit surface sprays glass lubricant earlier before the jacket, after wrapping with alumina silicate fiber felt, the outer low carbon steel plate bag of using; Mild steel ductility is good, is difficult for broken cover during forging, owing to used glass lubricant+asbestos board+stainless three pipe protection measures, has effectively increased heat insulation effect in addition, has reduced cold imitating and should and reduce frictional resistance.
Forge and adopt the die forging processing technology, specific as follows:
High-strength dish: biscuit low temperature is gone into stove, adopts the staged heating means to heat up, and the forging temperature that is heated to regulation at last is incubated;
The direct aging dish: biscuit low temperature is gone into stove, adopts the staged heating means to heat up, and the forging temperature that is heated to regulation at last is incubated; Be transferred to after the biscuit heating finishes and carry out die forging on the 630KJ counter-blow hammer, to be strict controlled in transfer time within 5 minutes, temperature drop is controlled within 50 ℃, to guarantee to have higher initial forging temperature, the cycle of forging hammer is controlled at 20 times to 40 times, whole hammering is crossed range request one fire and is finished, strict control final forging temperature, and it is low or higher to avoid temperature to cross.
The hammer forging technique type of cooling of described GH4169 alloy disc is that high-strength dish hammering finishes the back and cools off in air; The hammering of direct aging dish finishes the back and cools off in water.
Heat treatment process parameter in the hammer forging technique of described GH4169 alloy disc is as follows,
High-strength dish is:
Solid solution: 950 ℃～980 ℃, insulation 1h, air cooling, oil cooling or water-cooled;
Timeliness: 720 ℃, insulation 8h is chilled to 620 ℃ with 50 ℃/h speed stove, insulation 8h, air cooling;
The direct aging dish is:
Timeliness: 720 ℃, insulation 8h is chilled to 620 ℃ with 50 ℃/h speed stove, insulation 8h, air cooling.
The hammer forging technique of GH4169 alloy disc of the present invention is mainly studied the production technology of the GH4169 alloy direct aging of forging on the 630KJ counter-blow hammer and high-strength dish and structure property etc.In order to guarantee that diskware obtains tiny grain structure and good performance, must and take bigger deformation ratio to forge in lower temperature, and will guarantee to have an amount of Ni3Nb phase.This just must cause the deformation temperature interval of alloy narrower, dish forging difficult forming.Moulding and tissue and performance in order to guarantee the compressor disc forging have adopted the sheathing process method, and the production of adopting glass lubricant to coil forging, have both played insulation effect when forging, and help forging deformation again.
In order to guarantee to coil the performance of forging, raw-material composition and tissue are controlled, controlled Nb in the raw material, S, O, N content, the original structure of material.Forging Technology to direct aging and high-strength compressor disc forging is studied, and influences the smithing technological parameter of forging performance and tissue, mainly contains heating-up temperature, opens the forging temperature, deflection, deformation velocity, factors such as final forging temperature and forging back cooling.
The GH4169 alloy direct aging and the high-strength compressor disc of hammer forging technique production have exclusive characteristics: the grain size of the GH4169 alloy disc forging that forge on counter-blow hammer (1) is tiny, even, the forging surface is little with internal diversity, and the grain size of dish forging is tiny, even.(2) because one of the GH4169 alloy disc forging that forges on counter-blow hammer adds showing tremendous enthusiasm repeatedly distortion, the rate of deformation height, distortion is fierce, and the intensity of forging is higher relatively, and combination property is better.
Advantage of the present invention:
This technology is to adopt the method for jacket, carries out a kind of method that engine forges with high-quality high-strength compressor disc of GH4169 alloy and direct aging compressor disc on counter-blow hammer.This technology adopts cladding method, add repeatedly distortion in showing tremendous enthusiasm time at one, the rate of deformation height, distortion is fierce, the surface more is tending towards evenly rationally with inner deformation extent in the deformation process, and the forging surface not have the tangible distortion non-uniform phenomenon that exists frictional resistance to produce because of die surface and deformable metal surface.One adds showing tremendous enthusiasm time distortion and rate of deformation height and helps metal and finish dynamic recrystallization, makes the grain size of dish forging tiny, even, and the while forging can produce stronger working hardening effect, thereby the intensity of forging is higher relatively, and combination property is better.This technology is a kind of effective means of production high-performance GH4169 alloy diskware, not only be applied in the manufacturing of the high-strength of certain machine and direct aging dish, and be widely used on Aeronautics and Astronautics, the nuclear energy, this technology will obtain popularizing in an all-round way and use, and has broad application prospects.
The specific embodiment
Embodiment 1
1, high-strength diskware:
The high-strength dish biscuit that die forging is used adopts low carbon steel plate and alumina silicate fiber felt jacket after the process surface treatment.Spray glass lubricant before the jacket earlier, after wrapping with alumina silicate fiber felt, the outer low carbon steel plate bag of using.The intact biscuit of jacket heats in electric furnace, and the charging temperature of biscuit should not surpass 800 ℃, adopts the staged heating means to heat up, and is heated to forging temperature at last and is incubated (the THICKNESS CONTROL temperature retention time of pressing biscuit).Biscuit carries out die forging after reaching temperature retention time on the 630KJ counter-blow hammer, hammer number is strict on request to be carried out.Biscuit begins hammering and will shorten transfer time as far as possible from coming out of the stove to, to guarantee having higher initial forging temperature, whole hammering is crossed range request one fire and finished, strict control final forging temperature, and it is low or higher to avoid temperature to cross.Hammering finishes the back diskware cools off in air, and the asbestos and the steel plate that will be wrapped in the diskware surface dispose, and eliminates effect of heat insulation.The diskware air cooling is heat-treated after finishing, and heat treating regime is: diskware low temperature is gone into stove, and step is warming up to 950 ℃, insulation 1h, air cooling (solid solution); 720 ℃ are incubated 8h down, are chilled to 620 ℃ with 50 ℃/h speed stove, insulation 8h, air cooling (timeliness).
2, direct aging diskware:
The high-strength dish biscuit that die forging is used adopts low carbon steel plate and alumina silicate fiber felt jacket after the process surface treatment.Spray glass lubricant before the jacket earlier, after wrapping with alumina silicate fiber felt, the outer low carbon steel plate bag of using.The intact biscuit of jacket heats in electric furnace, and the charging temperature of biscuit should not surpass 800 ℃, adopts the staged heating means to heat up, and is heated to forging temperature at last and is incubated (the THICKNESS CONTROL temperature retention time of pressing biscuit).Biscuit carries out die forging after reaching temperature retention time on the 630KJ counter-blow hammer, hammer number is strict on request to be carried out.Biscuit begins hammering and will shorten transfer time as far as possible from coming out of the stove to, to guarantee having higher initial forging temperature, whole hammering is crossed range request one fire and finished, strict control final forging temperature, and it is low or higher to avoid temperature to cross.Diskware was transferred to rapidly and is carried out water-cooled in the tank after hammering finished, and disposed the asbestos and the steel plate on diskware surface in the transfer process.The diskware water-cooled is carried out Ageing Treatment after finishing, and heat treating regime is: diskware low temperature is gone into stove, is warming up to 720 ℃, and insulation 8h is chilled to 620 ℃ with 50 ℃/h speed stove, insulation 8h, air cooling.
Embodiment 2
1, high-strength diskware:
The high-strength dish biscuit that die forging is used adopts low carbon steel plate and alumina silicate fiber felt jacket after the process surface treatment.Spray glass lubricant before the jacket earlier, after wrapping with alumina silicate fiber felt, the outer low carbon steel plate bag of using.The intact biscuit of jacket heats in electric furnace, and the charging temperature of biscuit should not surpass 800 ℃, adopts the staged heating means to heat up, and is heated to forging temperature at last and is incubated (the THICKNESS CONTROL temperature retention time of pressing biscuit).Biscuit carries out die forging after reaching temperature retention time on the 630KJ counter-blow hammer, hammer number is strict on request to be carried out.Biscuit begins hammering and will shorten transfer time as far as possible from coming out of the stove to, to guarantee having higher initial forging temperature, whole hammering is crossed range request one fire and finished, strict control final forging temperature, and it is low or higher to avoid temperature to cross.Hammering finishes the back diskware cools off in air, and the asbestos and the steel plate that will be wrapped in the diskware surface dispose, and eliminates effect of heat insulation.The diskware air cooling is heat-treated after finishing, and heat treating regime is: diskware low temperature is gone into stove, and step is warming up to 970 ℃, insulation 1h, air cooling (solid solution); 720 ℃ are incubated 8h down, are chilled to 620 ℃ with 40/h speed stove, insulation 8h, air cooling (timeliness).
2, direct aging diskware:
The high-strength dish biscuit that die forging is used adopts low carbon steel plate and alumina silicate fiber felt jacket after the process surface treatment.Spray glass lubricant before the jacket earlier, after wrapping with alumina silicate fiber felt, the outer low carbon steel plate bag of using.The intact biscuit of jacket heats in electric furnace, and the charging temperature of biscuit should not surpass 800 ℃, adopts the staged heating means to heat up, and is heated to forging temperature at last and is incubated (the THICKNESS CONTROL temperature retention time of pressing biscuit).Biscuit carries out die forging after reaching temperature retention time on the 630KJ counter-blow hammer, hammer number is strict on request to be carried out.Biscuit begins hammering and will shorten transfer time as far as possible from coming out of the stove to, to guarantee having higher initial forging temperature, whole hammering is crossed range request one fire and finished, strict control final forging temperature, and it is low or higher to avoid temperature to cross.Diskware was transferred to rapidly and is carried out water-cooled in the tank after hammering finished, and disposed the asbestos and the steel plate on diskware surface in the transfer process.The diskware water-cooled is carried out Ageing Treatment after finishing, and heat treating regime is: diskware low temperature is gone into stove, is warming up to 720 ℃, and insulation 8h is chilled to 620 ℃ with 40 ℃/h speed stove, insulation 8h, air cooling.
Embodiment 3
1, high-strength diskware:
The high-strength dish biscuit that die forging is used adopts low carbon steel plate and alumina silicate fiber felt jacket after the process surface treatment.Spray glass lubricant before the jacket earlier, after wrapping with alumina silicate fiber felt, the outer low carbon steel plate bag of using.The intact biscuit of jacket heats in electric furnace, and the charging temperature of biscuit should not surpass 800 ℃, adopts the staged heating means to heat up, and is heated to forging temperature at last and is incubated (the THICKNESS CONTROL temperature retention time of pressing biscuit).Biscuit carries out die forging after reaching temperature retention time on the 630KJ counter-blow hammer, hammer number is strict on request to be carried out.Biscuit begins hammering and will shorten transfer time as far as possible from coming out of the stove to, to guarantee having higher initial forging temperature, whole hammering is crossed range request one fire and finished, strict control final forging temperature, and it is low or higher to avoid temperature to cross.Hammering finishes the back diskware cools off in air, and the asbestos and the steel plate that will be wrapped in the diskware surface dispose, and eliminates effect of heat insulation.The diskware air cooling is heat-treated after finishing, and heat treating regime is: diskware low temperature is gone into stove, and step is warming up to 980 ℃, insulation 1h, air cooling (solid solution); 720 ℃ are incubated 8h down, are chilled to 620 ℃ with 60 ℃/h speed stove, insulation 8h, air cooling (timeliness).
2, direct aging diskware:
The high-strength dish biscuit that die forging is used adopts low carbon steel plate and alumina silicate fiber felt jacket after the process surface treatment.Spray glass lubricant before the jacket earlier, after wrapping with alumina silicate fiber felt, the outer low carbon steel plate bag of using.The intact biscuit of jacket heats in electric furnace, and the charging temperature of biscuit should not surpass 800 ℃, adopts the staged heating means to heat up, and is heated to forging temperature at last and is incubated (the THICKNESS CONTROL temperature retention time of pressing biscuit).Biscuit carries out die forging after reaching temperature retention time on the 630KJ counter-blow hammer, hammer number is strict on request to be carried out.Biscuit begins hammering and will shorten transfer time as far as possible from coming out of the stove to, to guarantee having higher initial forging temperature, whole hammering is crossed range request one fire and finished, strict control final forging temperature, and it is low or higher to avoid temperature to cross.Diskware was transferred to rapidly and is carried out water-cooled in the tank after hammering finished, and disposed the asbestos and the steel plate on diskware surface in the transfer process.The diskware water-cooled is carried out Ageing Treatment after finishing, and heat treating regime is: diskware low temperature is gone into stove, is warming up to 720 ℃, and insulation 8h is chilled to 620 ℃ with 60 ℃/h speed stove, insulation 8h, air cooling.
Claims (3)
1, a kind of hammer forging technique of GH4169 alloy disc, it is characterized in that: the hammer forging technique of described GH4169 alloy disc is the method that adopts jacket, on counter-blow hammer, carry out the forging of engine with high-quality high-strength dish of GH4169 alloy and direct aging dish, jacket is to adopt low carbon steel plate and thick alumina silicate fiber felt jacket, the biscuit surface sprays glass lubricant earlier before the jacket, after wrapping with alumina silicate fiber felt, the outer low carbon steel plate bag of using;
Forge and adopt the die forging processing technology, specific as follows:
High-strength dish: biscuit low temperature is gone into stove, adopts the staged heating means to heat up, and the forging temperature that is heated to regulation at last is incubated;
The direct aging dish: biscuit low temperature is gone into stove, adopts the staged heating means to heat up, and the forging temperature that is heated to regulation at last is incubated; Be transferred to after the biscuit heating finishes and carry out die forging on the 630KJ counter-blow hammer, to be strict controlled in transfer time within 5 minutes, temperature drop is controlled within 50 ℃, to guarantee to have higher initial forging temperature, the cycle of forging hammer is controlled at 20 times to 40 times, whole hammering is crossed range request one fire and is finished, strict control final forging temperature, and it is low or higher to avoid temperature to cross.
2, according to the hammer forging technique of the described GH4169 alloy disc of claim 1, it is characterized in that: the hammer forging technique type of cooling of described GH4169 alloy disc is that high-strength dish hammering finishes the back and cools off in air; The hammering of direct aging dish finishes the back and cools off in water.
3, the hammer forging technique of GH4169 alloy disc in accordance with claim is characterized in that: the heat treatment process parameter in the hammer forging technique of described GH4169 alloy disc is as follows,
High-strength dish is:
Solid solution: 950 ℃～980 ℃, insulation 1h, air cooling, oil cooling or water-cooled;
Timeliness: 720 ℃, insulation 8h is chilled to 620 ℃ with 50 ℃/h speed stove, insulation 8h, air cooling;
The direct aging dish is:
Timeliness: 720 ℃, insulation 8h is chilled to 620 ℃ with 50 ℃/h speed stove, insulation 8h, air cooling.
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| CN200710157512A CN101412066B (en) | 2007-10-17 | 2007-10-17 | Hammer forging technique of GH4169 alloy dish |
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| CN200710157512A CN101412066B (en) | 2007-10-17 | 2007-10-17 | Hammer forging technique of GH4169 alloy dish |
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| CN101412066B CN101412066B (en) | 2012-10-03 |
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