CN102909527B - The technological process of progressive forming is rolled in the casting of 42CrMo steel loop part - Google Patents
The technological process of progressive forming is rolled in the casting of 42CrMo steel loop part Download PDFInfo
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- CN102909527B CN102909527B CN201210322895.1A CN201210322895A CN102909527B CN 102909527 B CN102909527 B CN 102909527B CN 201210322895 A CN201210322895 A CN 201210322895A CN 102909527 B CN102909527 B CN 102909527B
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Abstract
A technological process for progressive forming is rolled in the casting of 42CrMo steel, and it belongs to middle-size and small-size ring the techniques of mass production field.Feature is technological process is alloy melting → liquid steel refining → centrifugal casting ring base → hot rolling → heat treatment → finishing, and described liquid steel refining adopts basic electric arc furnace oxidizing process to smelt, and smelting temperature is 1680 DEG C ~ 1700 DEG C; The casting of centrifugal hoop base refers to and refined molten steel centrifugal casting is become ring base, pouring temperature is 1550 DEG C ~ 1560 DEG C, depanning 1200 DEG C ~ 1250 DEG C time after cast terminates, is transported on footpath-axial ring rolling machine through induction system, utilizes strand waste heat directly to carry out rolling forming at 1050 DEG C.Advantage is the utilization rate of the material improved, and shortens the quality and the precision that improve ring while technological process reduces production cost, has saved the energy and human resources, improve production efficiency.
Description
Technical field
The invention belongs to ring production technical field, be specifically related to the technological process that progressive forming is rolled in the casting of a kind of 42CrMo steel loop part.
Background technology
Along with the fast development of the high-tech areas such as boats and ships, chemical industry equipment, Aero-Space and the energy, more and more extensive to high-quality, high-precision bearing demand, ring rolling technology also develops rapidly as efficient, the advanced manufacturing technology of producing bearing ring.Traditional ring forming technology flow process smelts-manufacture steel billet-heating to manufacture forging stock-punching-rolling forming, then machined is carried out, this forming technology not only operation is tediously long, waste material, and through heating several times, energy waste is serious, be unfavorable for the enforcement of current national to industrial emission reduction, low-carbon (LC) target, production efficiency is low, be unsuitable for the batch production of middle-size and small-size ring especially, and heating for multiple times causes ring oxide skin to increase the quality also affecting drip molding.
Summary of the invention
The object of the invention is to solve the flow process that progressive forming technique is rolled in the casting of a kind of 42CrMo steel loop part, effectively can save material, the energy, enhance productivity.
The present invention is specifically achieved in that and it is characterized in that technological process is: alloy melting → liquid steel refining → centrifugal casting ring base → hot rolling → heat treatment → finishing, wherein:
1, described liquid steel refining adopts the refining of basic electric arc furnace oxidizing process, and smelting temperature is 1680 DEG C ~ 1700 DEG C;
2, described centrifugal casting ring base is poured into a mould 1550 DEG C ~ 1560 DEG C time at refined molten steel, depanning 1200 DEG C ~ 1250 DEG C time after casting terminates;
3, described hot rolling is transported on footpath-axial ring rolling machine through induction system by ring base, utilizes strand waste heat directly to carry out rolling forming at 1050 DEG C.
Advantage of the present invention and good effect are:
1. compared with the prior art, The present invention reduces manufacturing procedure, saved processing cost, save the energy, material, equipment investment, improve production efficiency.
2. the present invention obtains ring base of good performance through casting, and after directly carrying out hot rolling, grain refining effect is good, and the shape and size precision of ring is high, and intensity requires identical with toughness with forging.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail
This example selects 42CrMo steel, requires that ring base is of a size of: external diameter φ 871mm, internal diameter φ 516mm, height 241mm.Rolling forming part dimensional requirement is: external diameter φ 1248mm, internal diameter φ 1045mm, height 234mm.Technological process is: alloy melting → liquid steel refining → centrifugal casting ring base → hot rolling → heat treatment → precision truing step.Wherein:
1. adopt basic electric arc furnace oxidizing process refined molten steel, smelting temperature is 1700 DEG C;
2. refined molten steel is carried out centrifugal casting at 1560 DEG C, depanning 1250 DEG C time after centrifugal casting terminates;
Ring base is delivered on D53K-4000 numerical control footpath-axial ring rolling machine through conveyer belt, utilizes strand waste heat, when temperature is 1050 DEG C, directly carry out rolling forming.The feed rate of idle roll of D53K-4000 numerical control footpath-axial ring rolling machine is 1mm/s, and rolling linear velocity is 1300mm/s, radial rolling power 2500KN, and axial rolling power 2000KN, will leave certain allowance during rolling.
Claims (1)
1. a progressive forming technological process is rolled in the casting of 42CrMo steel loop part, it is characterized in that: comprise alloy melting → liquid steel refining → casting ring base → hot rolling → heat treatment → finishing, wherein:
1. described liquid steel refining adopts the refining of basic electric arc furnace oxidizing process, and smelting temperature is 1680 DEG C ~ 1700 DEG C;
2. described casting ring base is that refined molten steel is carried out centrifugal casting at 1550 DEG C ~ 1560 DEG C, 1200 DEG C ~ 1250 DEG C depannings after centrifugal casting terminates;
3. described hot rolling is transported on footpath-axial ring rolling machine through induction system by ring base, utilizes strand waste heat directly to carry out rolling forming 1070 DEG C ~ 1050 DEG C time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210322895.1A CN102909527B (en) | 2012-09-04 | 2012-09-04 | The technological process of progressive forming is rolled in the casting of 42CrMo steel loop part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210322895.1A CN102909527B (en) | 2012-09-04 | 2012-09-04 | The technological process of progressive forming is rolled in the casting of 42CrMo steel loop part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102909527A CN102909527A (en) | 2013-02-06 |
| CN102909527B true CN102909527B (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210322895.1A Expired - Fee Related CN102909527B (en) | 2012-09-04 | 2012-09-04 | The technological process of progressive forming is rolled in the casting of 42CrMo steel loop part |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117822A (en) * | 2014-07-10 | 2014-10-29 | 芜湖市海联机械设备有限公司 | Precise cold rolled ring forming process |
| CN104525799B (en) * | 2014-12-26 | 2016-05-25 | 西安交通大学 | The semisolid manufacturing process of the radial-axial rolling strain-induced method of large ring |
| CN104525890B (en) * | 2014-12-26 | 2016-06-29 | 西安交通大学 | The semisolid manufacturing process of the Opposite roller spinning strain-induced method of submarine ring stiffened shell |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88101307A (en) * | 1988-03-13 | 1988-09-14 | 纪绍祥 | Casting and forging technique of ring blank of roller bearing |
| US6153082A (en) * | 1996-05-03 | 2000-11-28 | Asarco Incorporated | Copper cathode starting sheets |
| CN101011792A (en) * | 2007-02-08 | 2007-08-08 | 范承祥 | Manufacturing method for annular forging piece |
| CN101412183A (en) * | 2008-11-28 | 2009-04-22 | 首钢总公司 | Method for producing high-carbon chromium bearing steel by double retarded cooling process |
| CN101817134A (en) * | 2010-03-22 | 2010-09-01 | 太原科技大学 | Short-flow casting and rolling composite forming method for ferrule piece |
| CN101915273A (en) * | 2010-08-13 | 2010-12-15 | 新兴铸管股份有限公司 | Novel bearing ring material and production process thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0661604B2 (en) * | 1989-03-28 | 1994-08-17 | 川崎重工業株式会社 | Method for manufacturing disc made of super heat-resistant alloy |
-
2012
- 2012-09-04 CN CN201210322895.1A patent/CN102909527B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88101307A (en) * | 1988-03-13 | 1988-09-14 | 纪绍祥 | Casting and forging technique of ring blank of roller bearing |
| US6153082A (en) * | 1996-05-03 | 2000-11-28 | Asarco Incorporated | Copper cathode starting sheets |
| CN101011792A (en) * | 2007-02-08 | 2007-08-08 | 范承祥 | Manufacturing method for annular forging piece |
| CN101412183A (en) * | 2008-11-28 | 2009-04-22 | 首钢总公司 | Method for producing high-carbon chromium bearing steel by double retarded cooling process |
| CN101817134A (en) * | 2010-03-22 | 2010-09-01 | 太原科技大学 | Short-flow casting and rolling composite forming method for ferrule piece |
| CN101915273A (en) * | 2010-08-13 | 2010-12-15 | 新兴铸管股份有限公司 | Novel bearing ring material and production process thereof |
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| CN102909527A (en) | 2013-02-06 |
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Granted publication date: 20160106 Termination date: 20160904 |