CN101758151A - Rolling formation method of large and medium titanium alloy solid disc-shaped forge piece - Google Patents
Rolling formation method of large and medium titanium alloy solid disc-shaped forge piece Download PDFInfo
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- CN101758151A CN101758151A CN200910102903A CN200910102903A CN101758151A CN 101758151 A CN101758151 A CN 101758151A CN 200910102903 A CN200910102903 A CN 200910102903A CN 200910102903 A CN200910102903 A CN 200910102903A CN 101758151 A CN101758151 A CN 101758151A
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Abstract
The invention discloses a rolling formation method of a large and medium titanium alloy solid disc-shaped forge piece , which comprises the following steps of: upsetting, compressing and punching a titanium alloy rod material into a solid disc blank; putting the disc blank into a rolling machine to roll; rolling the disc blank for 20s and axially rolling the hollow disc blank under an axial rolling force of 4000-4900KN at an axial feeding speed of 1.8mm/s to widen the hollow disc blank at a speed of 10-12mm/s; rolling the disc blank for 20-40s and axially rolling the hollow disc blank under an axial rolling force of 3000-3500KN at an axial feeding speed of 0.8mm/s to widen the hollow disc blank at a speed of 8-10mm/s; rolling the disc blank for 40-70s and axially rolling the solid disc blank under an axial rolling force of 2500-3000KN at an axial feeding speed of 0.5mm/s to widen the hollow disc blank at a speed of 5-8mm/s; and carrying out fire rolling to prepare the solid disc-shaped forge piece. The method is mainly used for rolling disc-shaped forge pieces with excellent shapes, sizes, textures and performances.
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 titanium alloy solid disc-shaped forging.
Background technology
Big-and-middle-sized solid disk forging, 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 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 stainless steel solid disk forge piece 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 big-and-middle-sized titanium alloy solid disc-shaped 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 titanium alloy solid disc-shaped forging of the present invention is realized by the following technical solutions:
Be heated to deformation temperature after jumping-up, die mould obtain titanium alloy solid dish base by the titanium alloy bar of specification blanking, put into the elongator location after more described solid disk being heated to deformation temperature;
Start elongator, handle its epicone roller and make axial feed motion with the speed of 1.8mm/s towards described solid disk direction, thereby the epicone roller of described elongator and down the awl roller along described 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, described solid disk is with the speed broadening of 10mm/s～12mm/s;
When the operation of rolling proceeds to 20s, the feed speed of adjusting described epicone roller makes its rolling solid disk of speed axial feed with 0.8mm/s, the axial rolling force that described solid disk is subjected to upper and lower awl roller at this moment is 3000KN～3500KN, described solid disk under the effect of axial rolling force with the speed broadening of 8mm/s～10mm/s;
When the operation of rolling proceeds to 40s, the feed speed of adjusting described epicone roller makes the rolling described solid disk of its speed axial feed with 0.5mm/s, at this moment, the roll-force that described solid disk is subjected to upper and lower awl roller is 2500KN～3000KN, described solid disk is with the speed broadening of 5mm/s～8mm/s, finish when the operation of rolling proceeds to 70s, heating once and rolling becomes titanium alloy solid disc-shaped forging.。
Carry out annealing in process after described titanium alloy solid disc-shaped forging rolls, described annealing be described solid disk forging be heated to 650 ℃～850 ℃ 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 10mm/s～12mm/s with axial feed velocity axial rolling solid disk under the roll-force of 4000KN～4900KN of 1.8mm/s in the rolling 20s of beginning; In rolling 20s～40s, make its speed broadening with 8mm/s～10mm/s with axial feed velocity axial rolling solid disk under the axial rolling force of 3000KN～3500KN of 0.8mm/s; In rolling 40s～70s, make its speed broadening at the following axial rolling solid disk of the axial rolling force of 2500KN～3000KN with 5mm/s～8mm/s with the axial feed velocity 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.
The size and dimension of this titanium alloy solid disc-shaped forging has reached the design drawing requirement after testing.
The titanium alloy material that with the trade mark is TC4 is an example:
The macrostructure of this titanium alloy solid disc-shaped forging finds no any defective after testing.
The mirco structure of this titanium alloy solid disc-shaped forging (microscopically amplifies 500 times) has obtained even tiny tissue after testing.
After testing, the performance of this titanium alloy solid disc-shaped forging is as follows:
The room temperature tensile performance: tensile strength is 970MPa～980MPa (greater than the 895MPa of instructions for use), its percentage elongation is that 0.2% o'clock yield strength is 920MPa～935MPa (greater than the 825MPa of instructions for use), elongation after fracture be 14.5% (greater than instructions for use 10%), the contraction percentage of area be 37.5% (greater than instructions for use 20%).
400 ℃ of high temperature tensile properties: tensile strength is 680MPa～705MPa (greater than the 615MPa of instructions for use), elongation after fracture is 14.5%～16.5% (greater than the 12MPa of instructions for use), the contraction percentage of area be 61%～65.5% (greater than instructions for use 40%).
400 ℃ of high temperature endurance performances: stress is 570MPa, 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 titanium alloy disk forge piece of the method for the invention roll forming.
Fig. 2 is the high power metallographic structure figure that adopts the titanium alloy disk forge piece of the method for the invention roll forming.
The specific embodiment
The titanium alloy material that with the trade mark is TC4 below is that example illustrates concrete processing step of the present invention:
Step 1: the titanium alloy bar by the TC4 of specification blanking is heated to 1030 ℃～1050 ℃ deformation temperature after jumping-up, die mould obtain titanium alloy solid dish base;
Step 2: described solid disk 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 1.8mm/s towards described solid disk direction, thus the epicone roller of described elongator and down the awl roller along described 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; Described solid disk is with the speed broadening of 10mm/s～12mm/s.
Step 4: when the operation of rolling proceeds to 20s, the feed speed of adjusting described epicone roller makes its rolling solid disk of speed axial feed with 0.8mm/s, the axial rolling force that described solid disk is subjected to upper and lower awl roller at this moment is 3000KN～3500KN, described solid disk under the effect of axial rolling force with the speed broadening of 8mm/s～10mm/s.
Step 5: when the operation of rolling proceeds to 40s, the feed speed of adjusting described epicone roller makes the rolling described solid disk of its speed axial feed with 0.5mm/s, at this moment, the roll-force that described solid disk is subjected to upper and lower awl roller is 2500KN～3000KN, described solid disk is with the speed broadening of 5mm/s～8mm/s, finish when the operation of rolling proceeds to 70s, heating once and rolling becomes titanium alloy solid disc-shaped forging.
The finish-forging of above-mentioned TC4 titanium alloy material or finishing temperature are greater than 950 ℃
Step 6: carry out annealing in process after described titanium alloy solid disc-shaped forging rolls, described annealing be described solid disk forging be heated to 650 ℃～850 ℃ the insulation laggard line spaces cold.
The size and dimension of this titanium alloy solid disc-shaped forging has reached the design drawing requirement after testing.
The macrostructure of this titanium alloy solid disc-shaped forging as shown in Figure 1, finds no any defective after testing.
The mirco structure of this titanium alloy solid disc-shaped forging (microscopically amplifies 500 times) as shown in Figure 2, has obtained even tiny tissue after testing.
After testing, the performance of this titanium alloy solid disc-shaped forging is as follows:
The room temperature tensile performance: tensile strength is 970MPa～980MPa, and its percentage elongation is that 0.2% o'clock yield strength is 920MPa～935MPa, and elongation after fracture is 14.5%, and the contraction percentage of area is 37.5%.
400 ℃ of high temperature tensile properties: tensile strength is 680MPa～705MPa, and elongation after fracture is 14.5%～16.5%, and the contraction percentage of area is 61%～65.5%.
400 ℃ of high temperature endurance performances: stress is 570MPa, rupture time 〉=100 hour.
Claims (2)
1. the roll-forming method of a big-and-middle-sized titanium alloy solid disc-shaped forging, comprise being heated to deformation temperature after jumping-up, die mould obtain titanium alloy solid dish base, put into the elongator localization step after more described solid disk being heated to deformation temperature by the titanium 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 1.8mm/s towards described solid disk direction, thereby the epicone roller of described elongator and down the awl roller along described 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, described solid disk is with the speed broadening of 10mm/s～12mm/s;
When the operation of rolling proceeds to 20s, the feed speed of adjusting described epicone roller makes its rolling solid disk of speed axial feed with 0.8mm/s, the axial rolling force that described solid disk is subjected to upper and lower awl roller at this moment is 3000KN～3500KN, described solid disk under the effect of axial rolling force with the speed broadening of 8mm/s～10mm/s;
When the operation of rolling proceeds to 40s, the feed speed of adjusting described epicone roller makes the rolling described solid disk of its speed axial feed with 0.5mm/s, at this moment, the roll-force that described solid disk is subjected to upper and lower awl roller is 2500KN～3000KN, described solid disk is with the speed broadening of 5mm/s～8mm/s, finish when the operation of rolling proceeds to 70s, heating once and rolling becomes titanium alloy solid disc-shaped forging.
2. the roll-forming method of big-and-middle-sized titanium alloy solid disc-shaped forging according to claim 1, it is characterized in that: carry out annealing in process after described titanium alloy solid disc-shaped forging rolls, described annealing be described solid disk forging be heated to 650 ℃～850 ℃ the insulation laggard line spaces cold.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580768A (en) * | 2018-04-10 | 2018-09-28 | 张家港中环海陆特锻股份有限公司 | The manufacturing process of the pure titanium sheath forging of ocean engineering |
| CN108672622A (en) * | 2018-04-02 | 2018-10-19 | 张家港中环海陆特锻股份有限公司 | The high pure titanacycle part stable rolling technique of cylindrical thin wall |
| CN109127975A (en) * | 2018-10-17 | 2019-01-04 | 重庆文理学院 | A kind of titanium alloy rotation part and preparation method thereof |
| CN109518108A (en) * | 2018-12-24 | 2019-03-26 | 洛阳双瑞精铸钛业有限公司 | A kind of TA5 titanium alloy sheet and the preparation method and application thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2216438Y (en) * | 1994-12-23 | 1996-01-03 | 冶金工业部钢铁研究总院 | Conical roll core rod compound extender |
| 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 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672622A (en) * | 2018-04-02 | 2018-10-19 | 张家港中环海陆特锻股份有限公司 | The high pure titanacycle part stable rolling technique of cylindrical thin wall |
| CN108672622B (en) * | 2018-04-02 | 2019-12-03 | 张家港中环海陆高端装备股份有限公司 | The high pure titanacycle part stable rolling technique of cylindrical thin wall |
| CN108580768A (en) * | 2018-04-10 | 2018-09-28 | 张家港中环海陆特锻股份有限公司 | The manufacturing process of the pure titanium sheath forging of ocean engineering |
| CN108580768B (en) * | 2018-04-10 | 2019-12-03 | 张家港中环海陆高端装备股份有限公司 | The manufacturing process of the pure titanium sheath forging of ocean engineering |
| CN109127975A (en) * | 2018-10-17 | 2019-01-04 | 重庆文理学院 | A kind of titanium alloy rotation part and preparation method thereof |
| CN109127975B (en) * | 2018-10-17 | 2020-05-08 | 重庆文理学院 | Titanium alloy rotating member and preparation method thereof |
| CN109518108A (en) * | 2018-12-24 | 2019-03-26 | 洛阳双瑞精铸钛业有限公司 | A kind of TA5 titanium alloy sheet and the preparation method and application thereof |
| CN109518108B (en) * | 2018-12-24 | 2020-09-29 | 洛阳双瑞精铸钛业有限公司 | TA5 titanium alloy plate and preparation method and application thereof |
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