CN101758150A - Rolling formation method of large and medium high-temperature alloy hollow disc-shaped forge piece - Google Patents

Rolling formation method of large and medium high-temperature alloy hollow disc-shaped forge piece Download PDF

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Publication number
CN101758150A
CN101758150A CN200910102901A CN200910102901A CN101758150A CN 101758150 A CN101758150 A CN 101758150A CN 200910102901 A CN200910102901 A CN 200910102901A CN 200910102901 A CN200910102901 A CN 200910102901A CN 101758150 A CN101758150 A CN 101758150A
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China
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rolling
disc base
hollow disc
hollow
forge piece
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CN200910102901A
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Chinese (zh)
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CN101758150B (en
Inventor
吴浩
段忠园
谢永富
黎汝栋
杨勇
杨国平
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贵州安大航空锻造有限责任公司
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Abstract

The invention discloses a rolling formation method of a large and medium high-temperature alloy hollow disc-shaped forge piece, which comprises the following steps of: upsetting, compressing and punching a high-temperature alloy rod material into a hollow disc blank; putting the disc blank into a rolling machine to roll; rolling the disc blank for 20s to enable the disc blank to widen at a speed of 9-11mm/s under 4000-4900KN of an axial rolling force at an axial feeding speed of 1.6mm/s; rolling the disc blank for 20-40s to enable the disc blank to widen at a speed of 7-9mm/s under 3000-3500KN of an axial rolling force and 3000-4000KN of a radial rolling force at an axial feeding speed of 0.7mm/s; rolling the disc blank for 40-80s to enable the disc blank to widen at a speed of 4-7mm/s under an axial rolling force of 2500-3000KN and a radial rolling force of 2000-3000KN at an axial feeding speed of 0.5mm/s; and carrying out fire rolling to prepare the hollow disc-shaped forge piece. The method is mainly used for rolling disc-shaped forge pieces with excellent shapes, sizes, textures and performances.

Description

The roll-forming method of the hollow disk forge piece of big-and-middle-sized high temperature alloy

Technical field

The present invention relates to a kind of roll-forming method of forging, the roll-forming method of the hollow disk forge piece of particularly big-and-middle-sized high temperature alloy.

Background technology

Big-and-middle-sized hollow disk forge piece, forging such as the compressor disc of using as heavy ground gas turbine and the turbine disk, because work under bad environment, stressed complexity requires forging will have excellent tissue and performance.

On August 22nd, 2007, disclosed Chinese invention patent specification CN101020282A disclosed a kind of roll-forming method of big-and-middle-sized hollow disk forge piece, this method is metal bar material heating after jumping-up, die mould one-tenth dish blank, punching becomes the hollow disc base again, and hollow disc base heating afterloading unit, location, axially rolled and footpath-axially rolled are become hollow disk forge piece.This method has only solved the roll forming technical problem of big-and-middle-sized hollow disk forge piece.When adopting the hollow disk forge piece of the rolling big-and-middle-sized high temperature alloy 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 to be solved in the present invention provides the roll-forming method that a kind of axial feed velocity that uses variation is realized the hollow disk forge piece of big-and-middle-sized high temperature alloy, the variation that this method axial feed velocity when rolling is descending is also adjusted roll-force and radial feed speed thereupon, makes the hollow disk forge piece of roll forming possess excellent tissue and performance.

For solving the problems of the technologies described above, the roll-forming method of the hollow disk forge piece of the big-and-middle-sized high temperature alloy of the present invention is realized by the following technical solutions:

High temperature alloy bar by the specification blanking is heated to deformation temperature after jumping-up, die mould and punching obtain high temperature alloy hollow disc base, described hollow disc base is heated to puts into the elongator location after the deformation temperature again;

Start elongator, handle its epicone roller and make axial feed motion with the speed of 1.6mm/s towards described hollow disc base direction, thereby the epicone roller of described elongator and down the awl roller along described hollow disc base 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, described hollow disc base is with the speed broadening of 9mm/s~11mm/s;

When the operation of rolling proceeds to 20s, the core roller of handling described elongator is with the rolling described hollow disc base of the radial rolling power of 3000KN~4000KN, simultaneously, the feed speed of adjusting described epicone roller makes the rolling hollow disc base of its speed axial feed with 0.7mm/s, the axial rolling force that described hollow disc base is subjected to upper and lower awl roller at this moment is 3000KN~3500KN, described hollow disc base under the effect of footpath 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 described epicone roller makes the rolling described hollow disc base of its speed axial feed with 0.5mm/s, at this moment, the roll-force that described hollow disc base is subjected to upper and lower awl roller is 2500KN~3000KN, the radial rolling power that is subjected to is 2000KN~3000KN, described hollow disc base finishes when the operation of rolling proceeds to 80s with the speed broadening of 4mm/s~7mm/s, and heating once and rolling becomes the hollow disk forge piece of high temperature alloy.

The hollow disk forge piece of described high temperature alloy rolls after solid solution+Ageing Treatment, and described solution treatment is described disk forge piece to be heated to put in the oil after 980 ℃ ± 10 ℃ insulations cool off; Ageing Treatment be the disk forge piece after the described solution treatment be heated to 720 ± 10 ℃ the insulation laggard line spaces cold.

Compared with prior art, beneficial effect of the present invention is as follows:

The present invention makes its speed broadening with 9mm/s~11mm/s with axial feed velocity axial rolling hollow disc base 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 at the axially rolled hollow disc base in footpath under the axial rolling force of 3000KN~3500KN and under the radial rolling power of 3000KN~4000KN with 7mm/s~9mm/s with the axial feed velocity of 0.7mm/s; In rolling 40s~80s, make its speed broadening at the axially rolled hollow disc base in footpath under the axial rolling force of 2500KN~3000KN and under the radial rolling power of 2000KN~3000KN with 4mm/s~7mm/s with the axial feed velocity of 0.5mm/s; Heating once and rolling is configured as hollow disk forge piece.

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.

The size and dimension of the hollow disk forge piece of this high temperature alloy has reached the design drawing requirement after testing.

The high-temperature alloy material that with the trade mark is GH2674 is an example:

The macrostructure of the hollow disk forge piece of this high temperature alloy finds no any defective after testing.

The mirco structure of the hollow disk forge piece of this high temperature alloy (microscopically amplifies 100 times) has obtained even tiny tissue after testing.

After testing, the performance of the hollow disk forge piece of this high temperature alloy is as follows:

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

The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.

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 illustrates concrete processing step of the present invention:

Step 1: the high temperature alloy bar by the GH2674 of specification blanking is heated to 1040 ℃~1080 ℃ deformation temperature after obtain high temperature alloy hollow disc base after jumping-up, die mould and the punching;

Step 2: described hollow disc base is heated to puts 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 described hollow disc base direction, thus the epicone roller of described elongator and down the awl roller along described hollow disc base 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; Described hollow disc base is with the speed broadening of 9mm/s~11mm/s.

Step 4: when the operation of rolling proceeds to 20s, the core roller of handling described elongator is with the rolling described hollow disc base of the radial rolling power of 3000KN~4000KN, simultaneously, the feed speed of adjusting described epicone roller makes the rolling hollow disc base of its speed axial feed with 0.7mm/s, the axial rolling force that described hollow disc base is subjected to upper and lower awl roller at this moment is 3000KN~3500KN, described hollow disc base under the effect of footpath 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 described epicone roller makes the rolling described hollow disc base of its speed axial feed with 0.5mm/s, at this moment, the roll-force that described hollow disc base is subjected to upper and lower awl roller is 2500KN~3000KN, the radial rolling power that is subjected to is 2000KN~3000KN, described hollow disc base finishes when the operation of rolling proceeds to 80s with the speed broadening of 4mm/s~7mm/s, and heating once and rolling becomes the hollow disk forge piece of high temperature alloy.

The finish-forging of above-mentioned GH2674 high-temperature alloy material or finishing temperature are greater than 950 ℃

Step 6: heat-treat after the hollow disk forge piece of described high temperature alloy rolls, i.e. solid solution+Ageing Treatment.Wherein solution treatment is disk forge piece to be heated to put in the oil after 980 ℃ ± 10 ℃ insulations cool off; Ageing Treatment be the disk forge piece after the solution treatment be heated to 720 ± 10 ℃ the insulation laggard line spaces cold.

The size and dimension of the hollow disk forge piece of this high temperature alloy has reached the design drawing requirement after testing.

The macrostructure of the hollow disk forge piece of this high temperature alloy as shown in Figure 1, finds no any defective after testing.

The mirco structure of the hollow disk forge piece of this high temperature alloy (microscopically amplifies 100 times) as shown in Figure 2, has obtained even tiny tissue after testing.

After testing, the performance of the hollow disk forge piece of this high temperature alloy is as follows:

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 the hollow disk forge piece of big-and-middle-sized high temperature alloy, comprise being heated to deformation temperature after jumping-up, die mould and punching obtain high temperature alloy hollow disc base, put into the elongator localization step after more described hollow disc base being heated to deformation temperature 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 described hollow disc base direction, thereby the epicone roller of described elongator and down the awl roller along described hollow disc base 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, described hollow disc base is with the speed broadening of 9mm/s~11mm/s;
When the operation of rolling proceeds to 20s, the core roller of handling described elongator is with the rolling described hollow disc base of the radial rolling power of 3000KN~4000KN, simultaneously, the feed speed of adjusting described epicone roller makes the rolling hollow disc base of its speed axial feed with 0.7mm/s, the axial rolling force that described hollow disc base is subjected to upper and lower awl roller at this moment is 3000KN~3500KN, described hollow disc base under the effect of footpath 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 described epicone roller makes the rolling described hollow disc base of its speed axial feed with 0.5mm/s, at this moment, the roll-force that described hollow disc base is subjected to upper and lower awl roller is 2500KN~3000KN, the radial rolling power that is subjected to is 2000KN~3000KN, described hollow disc base finishes when the operation of rolling proceeds to 80s with the speed broadening of 4mm/s~7mm/s, and heating once and rolling becomes the hollow disk forge piece of high temperature alloy.
2. the roll-forming method of the hollow disk forge piece of big-and-middle-sized high temperature alloy according to claim 1 is characterized in that: the hollow disk forge piece of described high temperature alloy rolls after solid solution+Ageing Treatment.
3. the roll-forming method of the hollow disk forge piece of big-and-middle-sized high temperature alloy according to claim 2 is characterized in that: described solution treatment is described disk forge piece to be heated to put in the oil after 980 ℃ ± 10 ℃ insulations cool off; Ageing Treatment be the disk forge piece after the described solution treatment be heated to 720 ± 10 ℃ the insulation laggard line spaces cold.
CN2009101029010A 2009-11-27 2009-11-27 Rolling formation method of large and medium high-temperature alloy hollow disc-shaped forge piece CN101758150B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101791667A (en) * 2010-03-19 2010-08-04 贵州安大航空锻造有限责任公司 Roll forming method of large and medium high-temperature alloy solid disk forging
CN102126107A (en) * 2010-12-07 2011-07-20 西南铝业(集团)有限责任公司 Forging process of forged rings
CN102601278A (en) * 2012-03-20 2012-07-25 武汉理工大学 Method for radially and axially rolling and forming large-sized double-edge stepped ring parts
CN105397417A (en) * 2015-12-02 2016-03-16 贵州安大航空锻造有限责任公司 Rolling method of high-temperature alloy plate shaped forging
CN110479927A (en) * 2019-08-02 2019-11-22 武汉理工大学 Large thin-wall fork-shaped ring constrains radial-axial rolling manufacturing process

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100486754C (en) * 2006-12-06 2009-05-13 贵州安大航空锻造有限责任公司 Rolling forming process for large hollow disc forging
CN100484696C (en) * 2007-03-06 2009-05-06 马鞍山钢铁股份有限公司 Forging and rolling technology and hot rolling and forging apparatus for making large pulley

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101791667A (en) * 2010-03-19 2010-08-04 贵州安大航空锻造有限责任公司 Roll forming method of large and medium high-temperature alloy solid disk forging
CN102126107A (en) * 2010-12-07 2011-07-20 西南铝业(集团)有限责任公司 Forging process of forged rings
CN102126107B (en) * 2010-12-07 2013-06-05 西南铝业(集团)有限责任公司 Forging process of forged rings
CN102601278A (en) * 2012-03-20 2012-07-25 武汉理工大学 Method for radially and axially rolling and forming large-sized double-edge stepped ring parts
CN102601278B (en) * 2012-03-20 2014-04-02 武汉理工大学 Method for radially and axially rolling and forming large-sized double-edge stepped ring parts
CN105397417A (en) * 2015-12-02 2016-03-16 贵州安大航空锻造有限责任公司 Rolling method of high-temperature alloy plate shaped forging
CN110479927A (en) * 2019-08-02 2019-11-22 武汉理工大学 Large thin-wall fork-shaped ring constrains radial-axial rolling manufacturing process
CN110479927B (en) * 2019-08-02 2020-08-04 武汉理工大学 Large-scale thin-wall fork-shaped ring piece restraining diameter axial rolling forming method

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