CN101285113B - Control method for quenching buckling distortion of elongated metal shear-blade - Google Patents
Control method for quenching buckling distortion of elongated metal shear-blade Download PDFInfo
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- CN101285113B CN101285113B CN2008101238083A CN200810123808A CN101285113B CN 101285113 B CN101285113 B CN 101285113B CN 2008101238083 A CN2008101238083 A CN 2008101238083A CN 200810123808 A CN200810123808 A CN 200810123808A CN 101285113 B CN101285113 B CN 101285113B
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Abstract
The invention discloses a quenched bend and deformation control method for long metal shear blades, particularly relating to a control method to decrease deformation of long parts after heat treatment. The invention is characterized in that shear blade forging stocks are annealed after full spheroidization; distressing temper is carried on before shear blade quenching; the shear blade is processed to the size before quenching; the shear blades are vertically suspended on quench hangers and are putted into heating furnace; the second or the third stage is heating up and thermally insulation, and whole quenching and tempering work is completed. Application of the method lessens bend and deformation after axially asymmetalal long shear blades are quenched and tempered, economizes correcting process and improves processing efficiency.
Description
Technical field
The present invention relates to a kind of method of controlling quenching buckling distortion of elongated metal shear-blade, particularly relates to a kind of control method that reduces elongated part Heat Treatment Distortion.
Background technology
Tradition reduces the diastrophic method of elongated metal sheet slitting blade thermal treatment: increase by one destressing tempering process before blade quenches; Blade is vertically hung at the stove internal heating; Control heat-up rate during the blade heating; Require cooling during quenching evenly.The aforesaid method weak point is: blade is vertically hung does not have explanation will produce flexural deformation for the asymmetrical blade of axis when heating, and the bending of cooling back keeps.
Summary of the invention
Technical problem to be solved by this invention is to reduce the flexural deformation that the asymmetrical elongated metal sheet slitting of axis blade produces when quenching heating, and a kind of control method of quenching buckling distortion of elongated metal shear-blade is provided.
The present invention is achieved by the following technical programs: the blade forging stock is through abundant Spheroidizing Annealing, and blade carries out the destressing tempering before quenching, and temperature fixes on 600-750 ℃, time 3-5 hour; Blade is worked into the preceding size of quenching, this amount of finish generally is controlled at single face 1-2mm, find out the axial center of gravity line of blade by the Pro/E computed in software, with blade one end center of gravity line is that threaded hole is beaten at the center, screw in threaded hole with the lifting eye bolt that has auxiliary suspension ring, to the quenching suspender and the process furnace of packing into, quenching, tempering whole process are finished in two or three sections ladder-elevating temperatures and insulation with the blade vertical hanging.
Employing this method can make the flexural deformation after axial asymmetric elongated blade quenching, the tempering greatly reduce, and saves correcting process, improves working (machining) efficiency.
Embodiment
Below in conjunction with embodiment the present invention is further described.The blade blank is the H13 steel, digs, mills processing through after the abundant Spheroidizing Annealing, and every face stays 1-2mm process redundancy again on the basis of the dimensional requirement before quenching, in the deep-well stove, carry out the destressing temper then, temperature is selected 750 ℃, and the time is selected 5 hours, furnace cooling.Blade is worked into the preceding size that requires of quenching.Go out blade shaft to center of gravity line by computer utility Pro/E computed in software before, and labelled size, be that screw is got at blade one end in the center with the center of gravity line.After will having the lifting eye bolt screw-in screw of auxiliary suspension ring, with suspender blade is hung vertically in the process furnace, adopts three sections ladder-elevating temperature technologies, 550 ℃ kept 110 minutes, being raised to 850 ℃ kept 110 minutes, be raised to 1020 ℃ and kept 100-110 minute, coming out of the stove then steadily hangs in the quenching tank, and driving drives blade vertical up-and-down movement in groove, be cooled to go out groove about 150 ℃, enter tempering process, double tempering, be incubated 5.5 hours at every turn after air cooling.Above-mentioned processing method is handled back 5.2 meters long blade flexural deformations less than 2.5mm, and hardness reaches HRC51-55.
Claims (2)
1. the control method of a quenching buckling distortion of elongated metal shear-blade is characterized in that:
(1), the blade forging stock is through abundant Spheroidizing Annealing, blade carries out the destressing tempering before quenching, temperature fixes on 600-750 ℃, time 3-5 hour;
(2), with blade be worked into quench before size, this amount of finish is controlled at every 1-2mm;
(3), find out the length direction center of gravity line of blade by the Pro/E computed in software, be that threaded hole is beaten at the center with blade one end center of gravity line, screw in threaded hole with the lifting eye bolt that has auxiliary suspension ring, with the blade vertical hanging to the quenching suspender and the process furnace of packing into;
(4), adopt three sections ladder-elevating temperature technologies, 550 ℃ kept 110 minutes, were raised to 850 ℃ and kept 110 minutes, were raised to 1020 ℃ and kept 100-110 minute, coming out of the stove then steadily hangs in the quenching tank, finishes quenching;
(5), driving drives blade vertical up-and-down movement in groove, evenly is cooled to 150 ℃ and goes out groove, enters tempering process, double tempering, be incubated 5.5 hours at every turn after air cooling.
2. the control method of quenching buckling distortion of elongated metal shear-blade according to claim 1 is characterized in that: the blade flexural deformation of 5.2 cun long H13 steel after described control method is handled is less than 2.5mm, and hardness reaches HRC51-55.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101238083A CN101285113B (en) | 2008-06-05 | 2008-06-05 | Control method for quenching buckling distortion of elongated metal shear-blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101238083A CN101285113B (en) | 2008-06-05 | 2008-06-05 | Control method for quenching buckling distortion of elongated metal shear-blade |
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| Publication Number | Publication Date |
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| CN101285113A CN101285113A (en) | 2008-10-15 |
| CN101285113B true CN101285113B (en) | 2010-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101238083A Expired - Fee Related CN101285113B (en) | 2008-06-05 | 2008-06-05 | Control method for quenching buckling distortion of elongated metal shear-blade |
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| SE533070C2 (en) * | 2008-11-10 | 2010-06-22 | Seco Tools Ab | Ways to make cutting tools |
| CN102555537A (en) * | 2012-01-17 | 2012-07-11 | 沃博思（厦门）电子科技有限公司 | Novel blade and manufacturing process thereof |
| CN102703653A (en) * | 2012-04-27 | 2012-10-03 | 宁国慧宏耐磨材料有限公司 | Quenching process of wear-resistant steel balls and steel forgings |
| CN103147017A (en) * | 2013-03-21 | 2013-06-12 | 宝山钢铁股份有限公司 | Steel plate with high strength and excellent low-temperature toughness and manufacturing method thereof |
| CN103173602B (en) * | 2013-04-15 | 2014-12-10 | 衡阳市蒸湘星宇热处理厂 | Method for heat treatment of expanding mold piece |
| CN104498693A (en) * | 2014-12-23 | 2015-04-08 | 无锡透平叶片有限公司 | Charging structure and method for reducing heat treatment distortion of turbine blade forging |
| CN104673978B (en) * | 2015-02-13 | 2017-03-22 | 中钢集团邢台机械轧辊有限公司 | Annealing method for small-allowance part |
| CN105269281A (en) * | 2015-11-30 | 2016-01-27 | 贵州航天新力铸锻有限责任公司 | Manufacturing method of upsetting-extruding and molding mold for internal T-shaped ring part blank |
| CN109706297B (en) * | 2019-03-04 | 2021-06-08 | 襄阳新东特锻造有限公司 | Heat treatment method of H13 die steel |
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| CN1059567A (en) * | 1990-08-27 | 1992-03-18 | 王美俊 | Bainite steel shearing-blade and thermal treatment process thereof |
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|---|---|---|---|---|
| CN1059567A (en) * | 1990-08-27 | 1992-03-18 | 王美俊 | Bainite steel shearing-blade and thermal treatment process thereof |
| CN1262156A (en) * | 2000-03-13 | 2000-08-09 | 张云寿 | Disk-type shear knife and its heat treating technology |
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Address after: 243000 Ma'anshan economic and Technological Development Zone, Anhui, Chao Shan Road, No. 669 Patentee after: Taier Heavy Industry Co., Ltd. Address before: 243000 No. 18 Hongqi South Road, Anhui, Ma'anshan Patentee before: Anhui Taier Heavy Industry Co., Ltd. |
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Granted publication date: 20100602 Termination date: 20210605 |