CN101791667B - Roll forming method of large and medium high-temperature alloy solid disk forging - Google Patents
Roll forming method of large and medium high-temperature alloy solid disk forging Download PDFInfo
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- CN101791667B CN101791667B CN2010101276241A CN201010127624A CN101791667B CN 101791667 B CN101791667 B CN 101791667B CN 2010101276241 A CN2010101276241 A CN 2010101276241A CN 201010127624 A CN201010127624 A CN 201010127624A CN 101791667 B CN101791667 B CN 101791667B
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Abstract
The invention discloses a roll forming method of a large and medium high-temperature alloy solid disk forging, which comprises the following steps of: firstly upsetting high-temperature alloy bar materials, profiling into a solid disk blank; and rolling the disk blank in a rolling mill; when rolling within 20s, expanding the disk blank at a speed of 9-11mm/s under a 4000-4900KN axial rolling force with an axial feed speed of 1.6mm/s; when rolling in the time range of 20-40s, expanding the disk blank at a speed of 7-9mm/s under a 3000-3500KN axial rolling force with an axial feed speed of 0.7mm/s; and when rolling in the time range of 40-80s, expanding the disk blank at a speed of 4-7mm/s under a 2500-3000KN axial rolling force with an axial feed speed of 0.5mm/s; and finally rolling into the solid disk forging in one beating. The method is mainly used for rolling the disk forging with excellent shape, dimension, organization and performance.
Description
Technical field
The present invention relates to the roll-forming method of a kind of roll-forming method of forging, particularly big-and-middle-sized high-temperature alloy solid disk forging.
Background technology
Big-and-middle-sized solid disk forging, forging such as the compressor disc of using like heavy ground gas turbine and the turbine disk, because work under bad environment, stressed complicacy requires forging will have excellent tissue and performance.
On June 13rd, 2007, disclosed Chinese invention patent specification CN1978125A disclosed a kind of roll-forming method of big-and-middle-sized solid disk forging; This method is metal bar material heating after jumping-up, die mould become solid disk, solid disk heating afterloading unit location, axially rolled one-tenth solid disk forging.This method has only solved the roll forming technical problem of big-and-middle-sized solid disk forging.When adopting the rolling big-and-middle-sized high-temperature alloy solid disk forging of this method; When the epicone roller of elongator is made the rolling dish base of axial feed motion towards the dish base; If its feed speed is excessive, will cause coiling base temperature when rolling and raise, be easy to generate defectives such as overheated, burning and tissue variation; If its feed speed is too small; It is too fast that the dish base dispel the heat when rolling, cause rolling motionless, or increase rolling time and rolling number of times; Reduce rolling efficiency, and can cause on the disk forge piece card and fill defectives such as discontented near the peripheral position of the ring wedge angle of outer ring surface.And when adopting the rolling disk forge piece of this method; Need reach requirement through changeing the rolling shape and size of disk forge piece that just can make repeatedly more; So not only increase production cost, reduced productivity ratio, and rolling technology and the quality control increase difficulty of also can giving of repeated multiple times.
Summary of the invention
The technical problem that the present invention will solve provides the roll-forming method that a kind of axial feed velocity that uses variation is realized big-and-middle-sized high-temperature alloy solid disk forging; The variation that this method axial feed velocity when rolling is descending is also adjusted roll-force thereupon, makes the solid disk forging of roll forming possess excellent tissue and performance.
For solving the problems of the technologies described above, the roll-forming method of the big-and-middle-sized high-temperature alloy solid disk forging of the present invention adopts following technical scheme to realize:
Be heated to deformation temperature after jumping-up, die mould obtain high-temperature alloy solid dish base by the high temperature alloy bar of specification blanking, put into the elongator location after being heated to deformation temperature to said solid disk again;
Start elongator; Handle its epicone roller and make axial feed motion with the speed of 1.6mm/s towards said solid disk direction; Thereby the epicone roller of said elongator and following awl roller along said solid disk axially with rolling its card of the roll-force of 4000KN～4900KN and outside its radial level, move the axially rolled of realization dish base, said solid disk is with the speed broadening of 9mm/s～11mm/s;
When the operation of rolling proceeds to 20s; The feed speed of adjusting said epicone roller makes its rolling solid disk of speed axial feed with 0.7mm/s; The axial rolling force that said solid disk receives upper and lower awl roller at this moment is 3000KN～3500KN, said solid disk under the effect of axial rolling force with the speed broadening of 7mm/s～9mm/s;
When the operation of rolling proceeds to 40s; The feed speed of adjusting said epicone roller makes the rolling said solid disk of its speed axial feed with 0.5mm/s; At this moment, the roll-force that said solid disk receives upper and lower awl roller is 2500KN～3000KN, and said solid disk is with the speed broadening of 4mm/s～7mm/s; Finish when the operation of rolling proceeds to 80s, heating once and rolling becomes high-temperature alloy solid disk forging.
Said high-temperature alloy solid disk forging rolls after solid solution+Ageing Treatment, and said solution treatment is to be heated to said disk forge piece to put in the oil after 980 ℃ ± 10 ℃ insulations to cool off; Ageing Treatment be the disk forge piece after the said solution treatment be heated to 720 ± 10 ℃ the insulation laggard line spaces cold.
Compared with prior art, beneficial effect of the present invention is following:
The present invention makes its speed broadening with 9mm/s～11mm/s with axial feed velocity axial rolling solid disk under the roll-force of 4000KN～4900KN of 1.6mm/s in the rolling 20s of beginning; In rolling 20s～40s, make its speed broadening with 7mm/s～9mm/s with axial feed velocity axial rolling solid disk under the axial rolling force of 3000KN～3500KN of 0.7mm/s; In rolling 40s～80s, make its speed broadening with 4mm/s～7mm/s with axial feed velocity axial rolling solid disk under the axial rolling force of 2500KN～3000KN of 0.5mm/s; Heating once and rolling is configured as solid disk forging.
Adopt such process route, can avoid coiling base temperature when rolling and raise, produce defectives such as overheated, burning and tissue variation; Can also avoid coiling base when rolling, dispel the heat too fast, cause rolling motionless, reduce rolling efficiency and on the disk forge piece card ring wedge angle periphery position near outer ring surface fill defectives such as discontented.And adopt this method to realize the heating once and rolling shaping, and reduced rolling time and rolling number of times, be easy to technology and quality are controlled, reduced production cost, improved productivity ratio.
Through detecting the size and dimension of this high-temperature alloy solid disk forging, reached the design drawing requirement.
The high-temperature alloy material that with the trade mark is GH2674 is an example:
Through detecting the macrostructure of this high-temperature alloy solid disk forging, do not find to have any defective.
Mirco structure (microscopically amplifies 100 times) through detecting this high-temperature alloy solid disk forging has obtained even tiny tissue.
Through detecting, the performance of this high-temperature alloy solid disk forging is following:
The room temperature tensile performance: tensile strength is 1030MPa～1040MPa (greater than the 930MPa of instructions for use); Its percentage elongation is that 0.2% o'clock yield strength is 740MPa～745MPa (greater than the 610MPa of instructions for use); Elongation after fracture be 26%～27% (greater than instructions for use 16%); The contraction percentage of area be 53% (greater than instructions for use 20%), ballistic work is 94J～98J (greater than the 39J of instructions for use).
The room temperature enduring quality: stress is 670MPa, and rupture time >=100 hour have reached instructions for use.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation.
Fig. 1 is the low power metallographic structure figure that adopts the high temperature alloy disk forge piece of the method for the invention roll forming.
Fig. 2 is the high power metallographic structure figure that adopts the high temperature alloy disk forge piece of the method for the invention roll forming.
The specific embodiment
The high-temperature alloy material that with the trade mark is GH2674 below is that example is explained concrete processing step of the present invention:
Step 1: be heated to 1040 ℃～1080 ℃ deformation temperature to high temperature alloy bar after jumping-up, die mould obtain high-temperature alloy solid dish base by the GH2674 of specification blanking;
Step 2: be heated to said solid disk and put into elongator and location after the above-mentioned deformation temperature;
Step 3: start elongator; Handle its epicone roller and make axial feed motion with the speed of 1.6mm/s towards said solid disk direction, thus the epicone roller of said elongator and awl roller down along said solid disk axially with rolling its card of the roll-force of 4000KN～4900KN and outside its radial level, move the axially rolled of realization dish base; Said solid disk is with the speed broadening of 9mm/s～11mm/s.
Step 4: when the operation of rolling proceeds to 20s; The feed speed of adjusting said epicone roller makes its rolling solid disk of speed axial feed with 0.7mm/s; The axial rolling force that said solid disk receives upper and lower awl roller at this moment is 3000KN～3500KN, said solid disk under the effect of axial rolling force with the speed broadening of 7mm/s～9mm/s.
Step 5: when the operation of rolling proceeds to 40s; The feed speed of adjusting said epicone roller makes the rolling said solid disk of its speed axial feed with 0.5mm/s; At this moment, the roll-force that said solid disk receives upper and lower awl roller is 2500KN～3000KN, and said solid disk is with the speed broadening of 4mm/s～7mm/s; Finish when the operation of rolling proceeds to 80s, heating once and rolling becomes high-temperature alloy solid disk forging.
The finish-forging of above-mentioned GH2674 high-temperature alloy material or finishing temperature are greater than 950 ℃
Step 6: heat-treat after said high-temperature alloy solid disk forging rolls, i.e. solid solution+Ageing Treatment.Wherein solution treatment is to be heated to disk forge piece to put in the oil after 980 ℃ ± 10 ℃ insulations to cool off; Ageing Treatment be the disk forge piece after the solution treatment be heated to 720 ± 10 ℃ the insulation laggard line spaces cold.
Through detecting the size and dimension of this high-temperature alloy solid disk forging, reached the design drawing requirement.
Through detecting the macrostructure of this high-temperature alloy solid disk forging, as shown in Figure 1, do not find to have any defective.
Through the mirco structure (microscopically amplifies 100 times) that detects this high-temperature alloy solid disk forging, as shown in Figure 2, obtained even tiny tissue.
Through detecting, the performance of this high-temperature alloy solid disk forging is following:
The room temperature tensile performance: tensile strength is 1030MPa～1040MPa, and its percentage elongation is that 0.2% o'clock yield strength is 740MPa～745MPa, and elongation after fracture is 26～27%, and the contraction percentage of area is 53%, and ballistic work is 94J～98J.
The room temperature enduring quality: stress is 670MPa, rupture time >=100 hour.
Claims (3)
1. the roll-forming method of a big-and-middle-sized high-temperature alloy solid disk forging; Comprise being heated to deformation temperature after jumping-up, die mould obtain high-temperature alloy solid dish base, put into the elongator localization step after being heated to deformation temperature to said solid disk again by the high temperature alloy bar of specification blanking; It is characterized in that this method is further comprising the steps of:
Start elongator; Handle its epicone roller and make axial feed motion with the speed of 1.6mm/s towards said solid disk direction; Thereby the epicone roller of said elongator and following awl roller along said solid disk axially with rolling its card of the roll-force of 4000KN～4900KN and outside its radial level, move the axially rolled of realization dish base, said solid disk is with the speed broadening of 9mm/s～11mm/s;
When the operation of rolling proceeds to 20s; The feed speed of adjusting said epicone roller makes its rolling solid disk of speed axial feed with 0.7mm/s; The axial rolling force that said solid disk receives upper and lower awl roller at this moment is 3000KN～3500KN, said solid disk under the effect of axial rolling force with the speed broadening of 7mm/s～9mm/s;
When the operation of rolling proceeds to 40s; The feed speed of adjusting said epicone roller makes the rolling said solid disk of its speed axial feed with 0.5mm/s; At this moment, the roll-force that said solid disk receives upper and lower awl roller is 2500KN～3000KN, and said solid disk is with the speed broadening of 4mm/s～7mm/s; Finish when the operation of rolling proceeds to 80s, heating once and rolling becomes high-temperature alloy solid disk forging.
2. the roll-forming method of big-and-middle-sized high-temperature alloy solid disk forging according to claim 1, it is characterized in that: said high-temperature alloy solid disk forging rolls after solid solution+Ageing Treatment.
3. the roll-forming method of big-and-middle-sized high-temperature alloy solid disk forging according to claim 2 is characterized in that: said solution treatment is to be heated to said disk forge piece to put in the oil after 980 ℃ ± 10 ℃ insulations to cool off; Ageing Treatment be the disk forge piece after the said solution treatment be heated to 720 ± 10 ℃ the insulation laggard line spaces cold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010101276241A CN101791667B (en) | 2010-03-19 | 2010-03-19 | Roll forming method of large and medium high-temperature alloy solid disk forging |
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| CN2010101276241A CN101791667B (en) | 2010-03-19 | 2010-03-19 | Roll forming method of large and medium high-temperature alloy solid disk forging |
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| CN101791667A CN101791667A (en) | 2010-08-04 |
| CN101791667B true CN101791667B (en) | 2012-02-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0741282B2 (en) * | 1985-09-09 | 1995-05-10 | 川崎製鉄株式会社 | Method and apparatus for rolling H-section steel |
| CN201161276Y (en) * | 2007-11-14 | 2008-12-10 | 贵州安大航空锻造有限责任公司 | Disc surface rolling device for disc-shaped forge piece |
| CN101758150B (en) * | 2009-11-27 | 2011-05-11 | 贵州安大航空锻造有限责任公司 | Rolling formation method of large and medium high-temperature alloy hollow disc-shaped forge piece |
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