CN105154654A - Annealing process of air conditioner bearing cover - Google Patents
Annealing process of air conditioner bearing cover Download PDFInfo
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- CN105154654A CN105154654A CN201510546364.4A CN201510546364A CN105154654A CN 105154654 A CN105154654 A CN 105154654A CN 201510546364 A CN201510546364 A CN 201510546364A CN 105154654 A CN105154654 A CN 105154654A
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- annealing process
- annealing
- air
- air conditioner
- bearing cover
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Abstract
The invention provides an annealing process of an air conditioner bearing cover. The process can effectively prevent and eliminate various structure defects and residual stress generated in the steel casting, forging, rolling and welding process to prevent the workpiece deformation and cracking. A softening process can be performed to bring convenience for subsequent cutting, and grains can be refined to improve the structure and enhance the workpiece mechanical performance.
Description
Technical field
The present invention relates to a kind of bearing machining field, particularly, relate to a kind of annealing process of air-conditioning bearing outside.
Background technology
Annealing is that metal is slowly heated to certain temperature, keeps enough time, then with a kind of metal heating processing technology of Reasonable Speed cooling.Annealing thermal treatment is divided into Full Annealing, underannealing and stress relief annealing, diffusion annealing, Spheroidizing Annealing, recrystallization annealing.The mechanical property of annealed material can detect with tension test, also can detect by hardness test.Many steel are all with the as-heat-treated condition supply of material of annealing, steel hardness determination can adopt Rockwell hardometer, test HRB hardness, for thinner steel plate, steel band and thin-wall steel tube, can superficial Rockwell hardness tester be adopted, detect HRT hardness. steel is heated to more than stagnation point Ac1 or following certain temperature, insulation for some time, subsequently in stove or imbed in stove or in medium that thermal conductivity is poor, make its Slow cooling to obtain the stable tissue close to equilibrium state.
Summary of the invention
The object of the present invention is to provide a kind of annealing process of air-conditioning bearing outside, solve bearing outside and easily occur tissue ischemia and workpiece deformation, problems of crack.
To achieve these goals, the invention provides a kind of annealing process of air-conditioning bearing outside, described processing method is: forged by bearing blank, is sent in annealing furnace by bearing blank after forging, and at 20-30min ' post-heating to 700-850 DEG C, be incubated 15-18min afterwards, be cooled to 700-730 DEG C subsequently, and keep isothermal 2-3h, be cooled to 400-450 DEG C subsequently, insulation 5-10min, comes out of the stove and carries out naturally cooling.
Preferably, in annealing process, shielding gas carbonic acid gas is passed into.
Preferably, in annealing process, keep malleation in stove to be 0.7-0.9Mpa.
Beneficial effect: the annealing process that the invention provides a kind of air-conditioning bearing outside, the various tissue defects and unrelieved stress that iron and steel causes in casting, forging and stamping, rolling and welding process can effectively be improved and eliminate to this technique, prevent workpiece deformation, cracking, simultaneously can softening process so that the machining in later stage, this technique can crystal grain thinning, improves tissue with the mechanical property improving workpiece.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The invention provides a kind of annealing process of air-conditioning bearing outside, described processing method is: forged by bearing blank, after forging, bearing blank is sent in annealing furnace, and be heated to 700 DEG C after 20 min, be incubated 15min afterwards, be cooled to 700 DEG C subsequently, and keep isothermal 2h, be cooled to 400 DEG C subsequently, insulation 5min, comes out of the stove and carries out naturally cooling.
Wherein, in annealing process, pass into shielding gas carbonic acid gas, in annealing process, keep malleation in stove to be 0.7Mpa.
The invention provides a kind of annealing process of air-conditioning bearing outside, the various tissue defects and unrelieved stress that iron and steel causes in casting, forging and stamping, rolling and welding process can effectively be improved and eliminate to this technique, prevent workpiece deformation, cracking, simultaneously can softening process so that the machining in later stage, this technique can crystal grain thinning, improves tissue with the mechanical property improving workpiece.
Pass to and describe the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (3)
1. the annealing process of an air-conditioning bearing outside, it is characterized in that, described processing method is: forged by bearing blank, is sent in annealing furnace by bearing blank after forging, and at 20-30min ' post-heating to 700-850 DEG C, be incubated 15-18min afterwards, be cooled to 700-730 DEG C subsequently, and keep isothermal 2-3h, be cooled to 400-450 DEG C subsequently, insulation 5-10min, comes out of the stove and carries out naturally cooling.
2. the annealing process of air-conditioning bearing outside according to claim 1, is characterized in that, passes into shielding gas carbonic acid gas in annealing process.
3. the annealing process of air-conditioning bearing outside according to claim 2, is characterized in that, keeps malleation in stove to be 0.7-0.9Mpa in annealing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510546364.4A CN105154654A (en) | 2015-08-31 | 2015-08-31 | Annealing process of air conditioner bearing cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510546364.4A CN105154654A (en) | 2015-08-31 | 2015-08-31 | Annealing process of air conditioner bearing cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105154654A true CN105154654A (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510546364.4A Pending CN105154654A (en) | 2015-08-31 | 2015-08-31 | Annealing process of air conditioner bearing cover |
Country Status (1)
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| CN (1) | CN105154654A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108823375A (en) * | 2018-09-19 | 2018-11-16 | 无锡市东日昌轴承制造有限公司 | A kind of bearing ring residual temperature annealing process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412334A (en) * | 2001-10-12 | 2003-04-23 | 万毅 | Production process of wear-resisting alloy steel cutting ring |
| CN101947630A (en) * | 2010-09-17 | 2011-01-19 | 洛阳轴研科技股份有限公司 | Controlled-forging controlled-cooling processing technology of bearing ring prepared by GCr15 |
| CN103317319A (en) * | 2013-06-09 | 2013-09-25 | 泰尔重工股份有限公司 | Production processing method for edge-digging scissors made of Cr12Mo1V1 |
| CN103710506A (en) * | 2013-12-31 | 2014-04-09 | 常州中钢精密锻材有限公司 | Forging and annealing process for die steel |
-
2015
- 2015-08-31 CN CN201510546364.4A patent/CN105154654A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412334A (en) * | 2001-10-12 | 2003-04-23 | 万毅 | Production process of wear-resisting alloy steel cutting ring |
| CN101947630A (en) * | 2010-09-17 | 2011-01-19 | 洛阳轴研科技股份有限公司 | Controlled-forging controlled-cooling processing technology of bearing ring prepared by GCr15 |
| CN103317319A (en) * | 2013-06-09 | 2013-09-25 | 泰尔重工股份有限公司 | Production processing method for edge-digging scissors made of Cr12Mo1V1 |
| CN103710506A (en) * | 2013-12-31 | 2014-04-09 | 常州中钢精密锻材有限公司 | Forging and annealing process for die steel |
Non-Patent Citations (4)
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| 大连工学院《金属学及热处理》编写小组: "《金属学及热处理》", 31 August 1975 * |
| 崔忠圻等: "《金属学与热处理第2版》", 30 June 2011 * |
| 林约利: "《热处理工操作技术》", 31 January 2013 * |
| 西德钢铁工程师协会: "《冷轧带钢生产》", 31 October 1983 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108823375A (en) * | 2018-09-19 | 2018-11-16 | 无锡市东日昌轴承制造有限公司 | A kind of bearing ring residual temperature annealing process |
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Application publication date: 20151216 |
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| RJ01 | Rejection of invention patent application after publication |