CN101445866A - Heat treatment process for water pump shaft connecting bearings - Google Patents
Heat treatment process for water pump shaft connecting bearings Download PDFInfo
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- CN101445866A CN101445866A CNA2008102385624A CN200810238562A CN101445866A CN 101445866 A CN101445866 A CN 101445866A CN A2008102385624 A CNA2008102385624 A CN A2008102385624A CN 200810238562 A CN200810238562 A CN 200810238562A CN 101445866 A CN101445866 A CN 101445866A
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- water pump
- pump shaft
- shaft connecting
- quenching
- heat treatment
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Abstract
The invention relates to a heat treatment process for water pump shaft connecting bearings, which includes a quenching and tempering treatment and an intermediate-frequency inductive heat treatment, wherein, the quenching and tempering treatment comprises the steps that an inner shaft of a water pump shaft connecting bearing is positioned in a resistance furnace to have integral heat treatment at a heating temperature being 820 DEG C to 830 DEG C; then oil quenching is performed; and the water pump shaft connecting bearing after oil quenching is tempered at a temperature as high as 480 DEG C to 520 DEG C, kept for 2 hours, and then cooled quickly. The intermediate-frequency inductive heat treatment includes the following steps that the surface heat treatment of the inner shaft of the water pump shaft connecting bearing is performed after the quenching and tempering treatment is performed, the heating temperature is 880 DEG C to 900 DEG C, then water-quenched quenching is performed, the inner shaft of the water pump shaft connecting bearing is heated up to 160 DEG C to 180 DEG C and cooled at a normal temperature, the intermediate-frequency induction heating is performed at a high speed, austenite grains are difficult to grow, the martensite structure after quenching is also extremely tiny, the surface hardness is high, fine-granular carbide is distributed on the matrix of a rope prime body after the quenching and tempering treatment in a dispersion manner, and the hardness of the core thereof is HRC35-45; therefore, the strength and the toughness are good.
Description
Technical field
The present invention relates to a kind of component be heat-treated technology, specifically, relate to a kind of heat treatment process for water pump shaft connecting bearings.
Background technology
The Kieren Perkins water pump shaft connecting bearings in process of production, need heat-treat the component of bearing, common thermal treatment process is that the component with bearing carry out complete heat treatment, workpiece hardness after the processing is HRC60～66, after adopting the water pump shaft connecting bearings of this whole heat treatment process to be installed on the Kieren Perkins water pump, in actual motion, breakage problem appears in the interior axle of this water pump shaft connecting bearings easily.The major cause of its main faults is, axle has only the higher surface hardness of ratio in the shaft connecting bearing of present domestic employing, core does not have enough intensity, under the high loading effect, be easy to generate excessive viscous deformation, and the running accuracy of destruction bearing causes the surface to crack until interior axle fracture when serious.
Summary of the invention
The technical problem to be solved in the present invention is at above problem, and the heat treatment process for water pump shaft connecting bearings of a kind of performance height, anti-fracture is provided.
For solving above technical problem, the technical solution adopted in the present invention is: heat treatment process for water pump shaft connecting bearings is characterized in that: described thermal treatment process may further comprise the steps:
1) modifier treatment
A, axle in the water pump shaft connecting bearings is placed on to heat in the resistance furnace and carries out complete heat treatment, Heating temperature is 820 ℃-830 ℃, then oil quenching;
B, the water pump shaft connecting bearings behind the oil quenching is carried out high tempering, the temperature of high tempering is 500 ± 20 ℃, is incubated 2 hours, then cooling fast;
2) Medium frequency induction thermal treatment
C, axle in the water pump shaft connecting bearings after the modifier treatment is carried out surface heat handle, Heating temperature is 880 ℃-900 ℃, and shrend is quenched;
D, again axle in the water pump shaft connecting bearings is heated to 160 ℃-180 ℃, and normal temperature cooling.
The present invention adopts above technical scheme, compared with prior art, have the following advantages: the interior axle that utilizes the water pump shaft connecting bearings of thermal treatment process production of the present invention, because Frequency Induction Heating speed is fast, austenite crystal is difficult for growing up, martensitic stucture after the quenching is very tiny also, so, the surface hardness height; Form favourable residual compressive stress and tiny martensite tissue after the hard surfacing, the fatigue resistance height, thus improved the wear resistance of workpiece; The disperse ground fine-grannular carbide that distributing on the Suo Su body matrix after modified, its core hardness is HRC35～45, so intensity and good toughness.Therefore, tough in the interior axle table of water pump shaft connecting bearings is hard, thus improved fatigue resistance and toughness, when guaranteeing its wear resistance, solved the breakage problem of axle.
Below in conjunction with embodiment to technical scheme further instruction of the present invention
Embodiment
Embodiment, heat treatment process for water pump shaft connecting bearings, this technology may further comprise the steps:
1) modifier treatment
But axle in the water pump shaft connecting bearings is placed on to heat in the protective atmosphere net belt type resistance furnace that model is RCWA9-80 and carries out complete heat treatment, Heating temperature is 820 ℃-830 ℃, oil quenching then, water pump shaft connecting bearings being placed on model SX2-410 is to carry out high tempering in the box-type furnace again, the temperature of high tempering is 500 ± 20 ℃, be incubated 2 hours, cooling fast, the acquisition core hardness is the sorbite tissue between 35～45HRC;
2) Medium frequency induction thermal treatment
Axle in the water pump shaft connecting bearings after the modifier treatment is carried out surface heat by SAET intermediate frequency surface induction lathe 3LEF to be handled, Heating temperature is 880 ℃-900 ℃, and shrend is quenched, and then with in the water pump shaft connecting bearings axle be heated to 160 ℃-180 ℃, and the normal temperature cooling, obtaining the tiny crystalline martensitic stucture of surface for quenching fully, surface hardness is HRC60～66, core has kept the tissue after modified, and the hardness of core is HRC35～45.
Handle axle in 200 water pump shaft connecting bearings according to above processes, obtaining surface hardness is HRC62, core hardness is 17 on the interior axle of the water pump shaft connecting bearings of HRC37, surface hardness is HRC63, core hardness is 23 on the interior axle of the water pump shaft connecting bearings of HRC38, surface hardness is HRC64, core hardness is 32 on the interior axle of the water pump shaft connecting bearings of HRC39, surface hardness is HRC65, core hardness is 36 on the interior axle of the water pump shaft connecting bearings of HRC41, surface hardness is HRC65, core hardness is 35 on the interior axle of the water pump shaft connecting bearings of HRC43, surface hardness is HRC66, core hardness is 34 on the interior axle of the water pump shaft connecting bearings of HRC44, and surface hardness is HRC66, core hardness is 23 on the interior axle of the water pump shaft connecting bearings of HRC45.
Claims (1)
1, heat treatment process for water pump shaft connecting bearings is characterized in that: described thermal treatment process may further comprise the steps:
1) modifier treatment
A, axle in the water pump shaft connecting bearings is placed on to heat in the resistance furnace and carries out complete heat treatment, Heating temperature is 820 ℃-830 ℃, then oil quenching;
B, the water pump shaft connecting bearings behind the oil quenching is carried out high tempering, the temperature of high tempering is 500 ± 20 ℃, is incubated 2 hours, then cooling fast;
2) Medium frequency induction thermal treatment
C, axle in the water pump shaft connecting bearings after the modifier treatment is carried out surface heat handle, Heating temperature is 880 ℃-900 ℃, and shrend is quenched;
D, again axle in the water pump shaft connecting bearings is heated to 160 ℃-180 ℃, and normal temperature cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102385624A CN101445866A (en) | 2008-12-18 | 2008-12-18 | Heat treatment process for water pump shaft connecting bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102385624A CN101445866A (en) | 2008-12-18 | 2008-12-18 | Heat treatment process for water pump shaft connecting bearings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101445866A true CN101445866A (en) | 2009-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102385624A Pending CN101445866A (en) | 2008-12-18 | 2008-12-18 | Heat treatment process for water pump shaft connecting bearings |
Country Status (1)
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| CN (1) | CN101445866A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892362A (en) * | 2010-04-26 | 2010-11-24 | 晋西工业集团有限责任公司 | Hardening and tempering method in pump body manufacturing |
| CN101921901A (en) * | 2010-03-26 | 2010-12-22 | 瓦房店光阳轴承集团有限公司 | Heat processing method of high-carbon chromium bearing steel bearing part |
| CN101974676A (en) * | 2010-11-09 | 2011-02-16 | 诸城市义和车桥有限公司 | Breaking-preventing knuckle spindle and thermal treatment method thereof |
| CN102382951A (en) * | 2011-11-11 | 2012-03-21 | 上海上大热处理有限公司 | Induction quenching machining method for drive shaft for pump |
| CN102634650A (en) * | 2012-04-24 | 2012-08-15 | 中煤北京煤矿机械有限责任公司 | Thermal treatment method for hinge pin shaft of hydraulic support |
| CN102943168A (en) * | 2012-11-19 | 2013-02-27 | 江苏万达特种轴承有限公司 | Heat treatment process for rolling bearing |
| CN103451402A (en) * | 2013-09-01 | 2013-12-18 | 株洲九方热表技术有限公司 | Heat treatment method of large shaft part |
| CN103740920A (en) * | 2013-09-12 | 2014-04-23 | 江苏万达特种轴承有限公司 | Double-hardness sprocket wheel |
| CN104372160A (en) * | 2014-07-31 | 2015-02-25 | 宁夏金环轴承制造有限公司 | Heat treatment method for gear tapered roller bearing and bearing toothed outer ring |
-
2008
- 2008-12-18 CN CNA2008102385624A patent/CN101445866A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921901A (en) * | 2010-03-26 | 2010-12-22 | 瓦房店光阳轴承集团有限公司 | Heat processing method of high-carbon chromium bearing steel bearing part |
| CN101892362A (en) * | 2010-04-26 | 2010-11-24 | 晋西工业集团有限责任公司 | Hardening and tempering method in pump body manufacturing |
| CN101974676B (en) * | 2010-11-09 | 2015-02-25 | 诸城市义和车桥有限公司 | Breaking-preventing knuckle spindle and thermal treatment method thereof |
| CN101974676A (en) * | 2010-11-09 | 2011-02-16 | 诸城市义和车桥有限公司 | Breaking-preventing knuckle spindle and thermal treatment method thereof |
| CN102382951A (en) * | 2011-11-11 | 2012-03-21 | 上海上大热处理有限公司 | Induction quenching machining method for drive shaft for pump |
| CN102634650A (en) * | 2012-04-24 | 2012-08-15 | 中煤北京煤矿机械有限责任公司 | Thermal treatment method for hinge pin shaft of hydraulic support |
| CN102943168A (en) * | 2012-11-19 | 2013-02-27 | 江苏万达特种轴承有限公司 | Heat treatment process for rolling bearing |
| CN103451402A (en) * | 2013-09-01 | 2013-12-18 | 株洲九方热表技术有限公司 | Heat treatment method of large shaft part |
| CN103451402B (en) * | 2013-09-01 | 2015-04-22 | 株洲九方热表技术有限公司 | Heat treatment method of large shaft part |
| CN103740920A (en) * | 2013-09-12 | 2014-04-23 | 江苏万达特种轴承有限公司 | Double-hardness sprocket wheel |
| CN103740920B (en) * | 2013-09-12 | 2016-03-16 | 江苏万达特种轴承有限公司 | Two hardness sprocket wheel |
| CN104372160A (en) * | 2014-07-31 | 2015-02-25 | 宁夏金环轴承制造有限公司 | Heat treatment method for gear tapered roller bearing and bearing toothed outer ring |
| CN104372160B (en) * | 2014-07-31 | 2016-09-07 | 宁夏金环轴承制造有限公司 | Gear taper roll bearing and the heat treatment method of bearing band tooth outer ring |
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Owner name: SHENGRUI TRANSMISSION INCORPORATED COMPANY. Free format text: FORMER OWNER: WEIFANG SHENGRUI MOTOR MACHINERY CO.,LTD. Effective date: 20100701 |
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Free format text: CORRECT: ADDRESS; FROM: 261205 HIGH + NEW TECHNOLOGY INDUSTRY DEVELOPMENT ZONE, WEIFANG CITY, SHANDONG PROVINCE EAST TO WEI AN ROAD SOUTH OF YINGQIAN STREET TO: 261041 17TH FLOOR, JINMA BUSINESS BUILDING, EAST OF JINMA ROAD, SOUTH OF DONGFENG EAST STREET, HIGH + NEW TECHNOLOGY INDUSTRY DEVELOPMENT ZONE, WEIFANG CITY, SHANDONG PROVINCE |
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Effective date of registration: 20100701 Address after: 261041 Shandong city of Weifang province high tech Zone South Road East Dongfeng East Street to Matsu business building 17 Applicant after: Shengrui Transmission Corporation limited Address before: 261205 hi tech Zone, Shandong, Weifang Weifang Road East Sakura South Road South Applicant before: Weifang Shengrui Power Science & Technology Co., Ltd. |
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Open date: 20090603 |