CN101804438A - Roll forming method of large and medium-size aluminum alloy hollow disk-shaped forgings - Google Patents
Roll forming method of large and medium-size aluminum alloy hollow disk-shaped forgings Download PDFInfo
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- CN101804438A CN101804438A CN 201010127631 CN201010127631A CN101804438A CN 101804438 A CN101804438 A CN 101804438A CN 201010127631 CN201010127631 CN 201010127631 CN 201010127631 A CN201010127631 A CN 201010127631A CN 101804438 A CN101804438 A CN 101804438A
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Abstract
The invention discloses a roll forming method of large and medium-size aluminum alloy hollow disk-shaped forgings, comprising the following steps of: firstly preparing aluminum alloy bar stocks into hollow disk blanks through upsetting, profiling and punching, and then feeding the disk blanks into a rolling mill for rolling; broadening the disk blanks at the speed of 9-12 mm/s under the axial rolling force of 4000 kN-4900 kN within the rolling time of 20s and at the axial feeding speed of 1.9 mm/s; broadening the disk blanks at the speed of 8-10 mm/s under the axial rolling force of 3000 kN-3500 kN and the radial rolling force of 3000 kN-4000 kN within the rolling time of 20-40s and at the axial feeding speed of 0.9 mm/s; and broadening the disk blanks at the speed of 5-8 mm/s under the axial rolling force of 2500 kN-3000 kN and the radial feeding force of 2000 kN-3000 kN within the rolling time of 40-40s and at the axial feeding speed of 0.5 mm/s; and then rolling the disk blanks into the hollow disk-shaped forgings under fire. The method is mainly used for rolling the disk-shaped forgings with excellent shapes, sizes, tissues and properties.
Description
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 aluminium alloy.
Background technology
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 aluminium 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 aluminium 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 aluminium alloy of the present invention is realized by the following technical solutions:
Aluminium alloy bar by the specification blanking is heated to deformation temperature after jumping-up, die mould and punching obtain aluminium 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 1.9mm/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～12mm/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 0.9mm/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 8mm/s～10mm/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 70s with the speed broadening of 5mm/s～8mm/s, and heating once and rolling becomes the hollow disk forge piece of aluminium alloy.
The hollow disk forge piece of described aluminium alloy rolls after quench and adds the artificial aging processing; Described quenching be described hollow disk forge piece be heated to 460 ℃～490 ℃ the insulation 9h～12h after water-cooled; Described artificial aging be described hollow disk forge piece be heated to 150 ℃～160 ℃ the insulation 20h～22h after air cooling.
Compared with prior art, beneficial effect of the present invention is as follows:
The present invention makes its speed broadening with 9mm/s～12mm/s with axial feed velocity axial rolling hollow disc base under the roll-force of 4000KN～4900KN of 1.9mm/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 8mm/s～10mm/s with the axial feed velocity of 0.9mm/s; In rolling 40s～70s, 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 5mm/s～8mm/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 aluminium alloy has reached the design drawing requirement after testing.
The aluminum alloy materials that with the trade mark is LC52 is an example:
The room temperature tensile performance of the hollow disk forge piece of this aluminium alloy after testing: tangential tensile strength is 446MPa～451MPa (greater than the 410MPa of design instructions for use), high to tensile strength be 431MPa～445MPa (greater than the 400MPa of design instructions for use), horizontal tensile strength is 435MPa～439MPa (greater than the 400MPa of design instructions for use); Its percentage elongation is that 0.2% o'clock tangential yield strength is 381MPa～391MPa (greater than the 345MPa of design instructions for use), percentage elongation be 0.2% o'clock height to yield strength be 373MPa～381MPa, percentage elongation is that 0.2% o'clock horizontal yield strength is 378MPa～379MPa; Tangential elongation after fracture be 15%～16% (greater than the design instructions for use 9%), high to elongation after fracture be 11%～13% (greater than the design instructions for use 5%), horizontal elongation after fracture be 11%～12% (greater than the design instructions for use 5%); Brinell hardness is 140HB～143HB.
The specific embodiment
The aluminum alloy materials that with the trade mark is LC52 below is that example illustrates concrete processing step of the present invention:
Step 1: the aluminium alloy bar by the LC52 of specification blanking is heated to 450 ℃～470 ℃ deformation temperature after obtain aluminium 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 1.9mm/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～12mm/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 0.9mm/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 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 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 70s with the speed broadening of 5mm/s～8mm/s, and heating once and rolling becomes the hollow disk forge piece of aluminium alloy.
The finish-forging of the aluminum alloy materials of above-mentioned LC52 or finishing temperature are greater than 350 ℃
Step 6: the hollow disk forge piece of described aluminium alloy rolls after quench and adds the artificial aging processing; Described quenching be described hollow disk forge piece be heated to 460～490 ℃ the insulation 9h～12h after water-cooled; Described artificial aging be described hollow disk forge piece be heated to 150 ℃～160 ℃ the insulation 20h～22h after air cooling.
The size and dimension of the hollow disk forge piece of this aluminium alloy has reached the design drawing requirement after testing.
After testing, the performance of the hollow disk forge piece of this aluminium alloy is as follows:
The room temperature tensile performance: tangential tensile strength is 446MPa～451MPa, high to tensile strength be 431MPa～445MPa, horizontal tensile strength is 435MPa～439MPa; Its percentage elongation is that 0.2% o'clock tangential yield strength is 381MPa～391MPa, percentage elongation be 0.2% o'clock height to yield strength be 373MPa～381MPa, percentage elongation is that 0.2% o'clock horizontal yield strength is 378MPa～379MPa; Tangential elongation after fracture is 15%～16%, high to elongation after fracture be 11%～13%, horizontal elongation after fracture is 11%～12%; Brinell hardness is 140HB～143HB.
Claims (3)
1. the roll-forming method of the hollow disk forge piece of big-and-middle-sized aluminium alloy, comprise being heated to deformation temperature after jumping-up, die mould and punching obtain aluminium alloy hollow disc base, put into the elongator localization step after more described hollow disc base being heated to deformation temperature by the aluminium 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 1.9mm/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～12mm/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 0.9mm/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 8mm/s～10mm/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 70s with the speed broadening of 5mm/s～8mm/s, and heating once and rolling becomes the hollow disk forge piece of aluminium alloy.
2. the roll-forming method of the hollow disk forge piece of big-and-middle-sized aluminium alloy according to claim 1 is characterized in that: the hollow disk forge piece of described aluminium alloy rolls after quench and adds the artificial aging processing.
3. the roll-forming method of the hollow disk forge piece of big-and-middle-sized aluminium alloy according to claim 2, it is characterized in that: described quenching is that described hollow disk forge piece is heated to water-cooled behind 460 ℃～490 ℃ insulation 9h～12h, and described artificial aging is described hollow disk forge piece to be heated to 150 ℃～160 ℃ be incubated air cooling behind 20h～22h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101276311A CN101804438B (en) | 2010-03-19 | 2010-03-19 | Roll forming method of large and medium-size aluminum alloy hollow disk-shaped forgings |
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| CN2010101276311A CN101804438B (en) | 2010-03-19 | 2010-03-19 | Roll forming method of large and medium-size aluminum alloy hollow disk-shaped forgings |
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| CN101804438A true CN101804438A (en) | 2010-08-18 |
| CN101804438B CN101804438B (en) | 2012-02-01 |
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| CN2010101276311A Expired - Fee Related CN101804438B (en) | 2010-03-19 | 2010-03-19 | Roll forming method of large and medium-size aluminum alloy hollow disk-shaped forgings |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369171A (en) * | 2015-12-02 | 2016-03-02 | 贵州安大航空锻造有限责任公司 | Rolling and heat treatment method for 6061 aluminum alloy ring part |
| CN109434264A (en) * | 2018-10-26 | 2019-03-08 | 中国航发北京航空材料研究院 | Large scale metal annular members electron beam fuse increases material base+looping mill rolling manufacturing process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60124427A (en) * | 1983-12-08 | 1985-07-03 | Agency Of Ind Science & Technol | Controlling method of rolling mill |
| JPS62227540A (en) * | 1986-03-29 | 1987-10-06 | Sumitomo Metal Ind Ltd | Rolling method for metal cylindrical member |
| CN101020284A (en) * | 2007-03-05 | 2007-08-22 | 贵州安大航空锻造有限责任公司 | Making process of large irregular ring blank of high temperature alloy |
| CN101020282A (en) * | 2006-12-06 | 2007-08-22 | 贵州安大航空锻造有限责任公司 | Rolling forming process for large hollow disc forging |
-
2010
- 2010-03-19 CN CN2010101276311A patent/CN101804438B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60124427A (en) * | 1983-12-08 | 1985-07-03 | Agency Of Ind Science & Technol | Controlling method of rolling mill |
| JPS62227540A (en) * | 1986-03-29 | 1987-10-06 | Sumitomo Metal Ind Ltd | Rolling method for metal cylindrical member |
| CN101020282A (en) * | 2006-12-06 | 2007-08-22 | 贵州安大航空锻造有限责任公司 | Rolling forming process for large hollow disc forging |
| CN101020284A (en) * | 2007-03-05 | 2007-08-22 | 贵州安大航空锻造有限责任公司 | Making process of large irregular ring blank of high temperature alloy |
Non-Patent Citations (1)
| Title |
|---|
| 《环件轧制理论和技术》 20011031 华林 《环件轧制理论和技术》 101-120 1-3 , 1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369171A (en) * | 2015-12-02 | 2016-03-02 | 贵州安大航空锻造有限责任公司 | Rolling and heat treatment method for 6061 aluminum alloy ring part |
| CN109434264A (en) * | 2018-10-26 | 2019-03-08 | 中国航发北京航空材料研究院 | Large scale metal annular members electron beam fuse increases material base+looping mill rolling manufacturing process |
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| CN101804438B (en) | 2012-02-01 |
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