CN101684519B - Method for improving heat treatment deformation of thin-wall light narrow series bearing ring - Google Patents
Method for improving heat treatment deformation of thin-wall light narrow series bearing ring Download PDFInfo
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- CN101684519B CN101684519B CN2009100653948A CN200910065394A CN101684519B CN 101684519 B CN101684519 B CN 101684519B CN 2009100653948 A CN2009100653948 A CN 2009100653948A CN 200910065394 A CN200910065394 A CN 200910065394A CN 101684519 B CN101684519 B CN 101684519B
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- lasso
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Abstract
The invention discloses a method for improving heat treatment deformation of a thin-wall light narrow series bearing ring. The method comprises the following process steps of: a, in a quenching furnace, heating the ring up to the temperature of between 825 and 840 DEG C, keeping the temperature for 40 to 55 minutes, taking the ring out of the furnace, and cooling the ring by oil; b, measuring theellipse and warpage of the ring, reshaping the heavily deformed ring by the heat reshaping process in time, namely modifying the ellipse in a reshaping mode of copper rod knocking and modifying the warpage in a mode of heavy hammer pressing, and removing the reshaping tools; c, putting the ring undergoing the heat reshape in the quenching furnace, heating the ring to the temperature of between 165 and 175 DEG C, and keeping the temperature for 2.5 to 3.0 hours; d, measuring the deformation after quenching the ring, using the reshaping tools to reshape the deformation of the ellipse by the internal support reshaping method, modifying the warpage by the method of using a splint when the warpage is deformed, and quenching the ring once more; e, taking the ring out of the furnace, cooling thering down to the room temperature, removing the reshaping tools, and putting the reshaped ring in the quenching furnace again for quenching; and f, measuring the deformation again, and transferring qualified products to the next working procedure. The method can effectively reduce rejection rate and lower production cost.
Description
Technical field
The invention belongs to bearing ring heat treatment technics field, what relate generally to is a kind of method of improving heat treatment deformation of thin-wall light narrow series bearing ring.
Background technology
Bearing ring in heat treatment process because factors such as thermal stresses, structural transformation can produce heat treatment deformations such as ellipse, warpage, method (the technical process: quenching-tempering-measurement-shaping-tempering-unload holder-tempering) of shaping after the tempering of quenching is adopted in the lasso thermal treatment that exceeds standard of distortion all the time, can improve the distortion situation, satisfy the requirement of operation down.But belong to the thin-wall light narrow series bearing owing to 16019,61,828 two bearing designations in producing, in heat treatment process, very easily produce heat treatment deformations such as ellipse, warpage, the employing method effect of shaping of quenching after the tempering is undesirable, promptly distortion is bigger, do not satisfy the technical requirements of this operation, qualification rate is low, causes mill processing to produce the scrap rate large percentage, has strengthened production cost.16019 bearing scrap rate are about 20%, 61828 bearing scrap rate and are about 25% according to statistics.
Summary of the invention
The objective of the invention is to propose a kind of method of improving heat treatment deformation of thin-wall light narrow series bearing ring,, reduce production costs to reduce scrap rate.
For achieving the above object, the technical scheme taked of the present invention is:
A, in quenching furnance, lasso is heated to 825 ℃～840 ℃, the insulation oil cooling of coming out of the stove behind 40min～55min;
The ellipse and the warpage of b, measurement lasso are out of shape bigger lasso and are adopted the timely shaping of shaping process while hot, and the shaping mode that promptly adopts copper rod to knock is repaired ellipse, and the mode that adopts weight to press is repaired warpage, removes shaping tool thereafter;
C, the lasso after the hot shaping is put into tempering stove, be heated to 165-175 ℃, insulation 2.5h～3.0h;
Measure distortion after d, the tempering, with the inner support shaping method shaping of its ovalizing deflection, the method finishing warpage of clamping plate folder is adopted in buckling deformation with shaping tool, and tempering once again;
E, coming out of the stove is chilled to room temperature, removes shaping tool, and the lasso after the shaping is put into the tempering stove tempering once more;
F, measurement distortion once more hand over to next procedure with salable product.
The present invention promptly measures the ellipse and the warpage of lasso after quenching, the bigger lasso of distortion is adopted the timely shaping of shaping process while hot, be specially the shaping mode that adopts copper rod to knock and repair ellipse, the mode that adopts weight to press is repaired warpage, removes the lasso of shaping tool after hot shaping thereafter and puts into the tempering stove tempering; And traditional method is to quench to measure the ellipse and the warpage of lasso after the tempering, to the bigger lasso of distortion with shaping tool with its ovalizing deflection with inner support shaping method shaping ellipse, the method finishing warpage of clamping plate folder is adopted in buckling deformation, is with the shaping tool tempering, removes shaping tool tempering more thereafter.According to test-results, reduce scrap rate after the employing novel method, reduced production cost, improve preceding 16019 bearing scrap rate according to statistics and be about 20%, 61828 bearing scrap rate are about 25%, reduced by 16019,61828 bearing rings after the improvement greatly because heat treatment deformation causes grinding the scrap rate of processing, 16019 outer ring waste products reduce to 5.5%, the inner ring waste product reduces to 5.3%; 61828 outer ring waste products reduce to 5.5%, inner ring does not have waste product, reduce 56.6 ten thousand yuan of losses due to spoiled work, effectively reduce production cost.The improvement of this technology is worked out other thin-wall light narrow series bearing ring technology has certain directive significance.
Embodiment
The embodiment that below provides will the present invention is described in more detail.
The technical process of present embodiment comprises: quenching-measurement-shaping-tempering while hot-measurement-shaping-band shaping tool tempering-unload shaping tool-tempering.Be specially:
Embodiment 1
A, in quenching furnance, lasso is heated to 825 ℃, the insulation oil cooling of coming out of the stove behind the 55min;
B, usefulness D914, G803 apparatus measures ellipse, warpage, in time the bigger lasso of distortion is adopted the timely shaping of shaping process while hot, it is the be above standard lasso of Q/LZ R (J) 2001 of ellipse, the shaping mode that adopts copper rod to knock is whole oval, the whole warpage of the mode that the lasso that warpage exceeds standard adopts weight to press is removed shaping tool thereafter;
C, the lasso after the hot shaping is put into tempering stove, be heated to 165 ℃, insulation 3.0h;
Measure distortion after d, the tempering, the lasso of its Q/LZ R (J) 2001 that is above standard, with common shaping tool with its ovalizing deflection amount with the shaping of inner support shaping method, the method finishing warpage of clamping plate folder is adopted in buckling deformation, be with shaping tool by the tempering of normalized tempering technology then, air cooling to room temperature is laid down shaping tool after the tempering, and the lasso after the shaping is pressed the tempering of normalized tempering technology again;
E, measurement distortion once more hand over to next procedure with salable product.
Embodiment 2
A, in quenching furnance, lasso is heated to 830 ℃, the insulation oil cooling of coming out of the stove behind the 45min;
B, usefulness D914, G803 apparatus measures ellipse, warpage, in time the bigger lasso of distortion is adopted the timely shaping of shaping process while hot, it is the be above standard lasso of Q/LZ R (J) 2001 of ellipse, the shaping mode that adopts copper rod to knock is whole oval, the whole warpage of the mode that the lasso that warpage exceeds standard adopts weight to press is removed shaping tool thereafter;
C, the lasso after the hot shaping is put into tempering stove, be heated to 170 ℃, insulation 2.5h;
Measure distortion after d, the tempering, the lasso of its Q/LZ R (J) 2001 that is above standard, with common shaping tool with its ovalizing deflection amount with the shaping of inner support shaping method, the method finishing warpage of clamping plate folder is adopted in buckling deformation, be with shaping tool by the tempering of normalized tempering technology then, air cooling to room temperature is laid down shaping tool after the tempering, and the lasso after the shaping is pressed the tempering of normalized tempering technology again;
E, measurement distortion once more hand over to next procedure with salable product.
Embodiment 3
A, in quenching furnance, lasso is heated to 840 ℃, the insulation oil cooling of coming out of the stove behind the 40min;
B, usefulness D914, G803 apparatus measures ellipse, warpage, in time the bigger lasso of distortion is adopted the timely shaping of shaping process while hot, it is the be above standard lasso of Q/LZ R (J) 2001 of ellipse, the shaping mode that adopts copper rod to knock is whole oval, the whole warpage of the mode that the lasso that warpage exceeds standard adopts weight to press is removed shaping tool thereafter;
C, the lasso after the hot shaping is put into tempering stove, be heated to 175 ℃, insulation 2.5h;
Measure distortion after d, the tempering, the lasso of its Q/LZ R (J) 2001 that is above standard, with common shaping tool with its ovalizing deflection amount with the shaping of inner support shaping method, the method finishing warpage of clamping plate folder is adopted in buckling deformation, be with shaping tool by the tempering of normalized tempering technology then, air cooling to room temperature is laid down shaping tool after the tempering, and the lasso after the shaping is pressed the tempering of normalized tempering technology again;
E, measurement distortion once more hand over to next procedure with salable product.
Claims (1)
1. method of improving heat treatment deformation of thin-wall light narrow series bearing ring, it is characterized in that: technical process comprises: quench---measure---shaping while hot---tempering---measure---shaping---tempering that the tempering of band shaping tool---is unloaded shaping tool---is specially:
A, in quenching furnance, lasso is heated to 825 ℃～840 ℃, the insulation oil cooling of coming out of the stove behind 40min～55min;
The ellipse and the warpage of b, measurement lasso are out of shape bigger lasso and are adopted the timely shaping of shaping process while hot, and the shaping mode that promptly adopts copper rod to knock is repaired ellipse, and the mode that adopts weight to press is repaired warpage, then removes shaping tool;
C, the lasso after the hot shaping is put into tempering stove, be heated to 165 ℃～175 ℃, insulation 2.5h～3.0h;
Measure distortion after d, the tempering, with the inner support shaping method shaping of its ovalizing deflection, the method finishing warpage of clamping plate folder is adopted in buckling deformation with shaping tool, and tempering once again;
E, coming out of the stove is chilled to room temperature, removes shaping tool, and the lasso after the shaping is put into the tempering stove tempering once more;
F, measurement distortion once more hand over to next procedure with salable product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100653948A CN101684519B (en) | 2009-06-29 | 2009-06-29 | Method for improving heat treatment deformation of thin-wall light narrow series bearing ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100653948A CN101684519B (en) | 2009-06-29 | 2009-06-29 | Method for improving heat treatment deformation of thin-wall light narrow series bearing ring |
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| Publication Number | Publication Date |
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| CN101684519A CN101684519A (en) | 2010-03-31 |
| CN101684519B true CN101684519B (en) | 2011-05-04 |
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| CN2009100653948A Expired - Fee Related CN101684519B (en) | 2009-06-29 | 2009-06-29 | Method for improving heat treatment deformation of thin-wall light narrow series bearing ring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146903A (en) * | 2011-12-06 | 2013-06-12 | 北京有色金属研究总院 | Finishing method of hollow circular ring member |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639248B (en) * | 2013-10-31 | 2016-05-11 | 中信重工机械股份有限公司 | The bearing calibration of ovalizing deflection after a kind of large-scale ring parts heat treatment |
| CN103866106B (en) * | 2014-03-12 | 2015-09-16 | 安徽利达汽车轴承制造有限公司 | A kind of bearing ring Q-tempering deformation amount controlling method |
| CN106854686B (en) * | 2015-12-08 | 2019-05-07 | 上海新力动力设备研究所 | A kind of shaping methods of ultrahigh-strength steel thin-wall shell quenching distortion |
| CN105349762A (en) * | 2015-12-15 | 2016-02-24 | 常熟市常轴轴承有限公司 | Heat treatment process for thin-wall bearing ring |
| CN106119512B (en) * | 2016-08-31 | 2018-01-12 | 瓦房店正达冶金轧机轴承有限公司 | A kind of quenching process suitable for bearing ring |
| CN108251608A (en) * | 2018-02-28 | 2018-07-06 | 洛阳Lyc轴承有限公司 | A kind of high-temperature bearing steel bearings lasso shaping processing method |
| CN108300848B (en) * | 2018-05-03 | 2020-03-17 | 洛阳Lyc轴承有限公司 | Method for correcting warping and ellipse of bearing ring in light and narrow series |
| CN113798351A (en) * | 2021-10-08 | 2021-12-17 | 内蒙古北方重工业集团有限公司 | Thermal correction method for large-scale frame thin-wall parts |
| CN114749878B (en) * | 2022-06-01 | 2024-01-16 | 大连冶金轴承股份有限公司 | Bearing outer ring machining method |
-
2009
- 2009-06-29 CN CN2009100653948A patent/CN101684519B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146903A (en) * | 2011-12-06 | 2013-06-12 | 北京有色金属研究总院 | Finishing method of hollow circular ring member |
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