CN104209711B - Ring processing method in a kind of wind-powered electricity generation pivoting support - Google Patents
Ring processing method in a kind of wind-powered electricity generation pivoting support Download PDFInfo
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- CN104209711B CN104209711B CN201410493260.7A CN201410493260A CN104209711B CN 104209711 B CN104209711 B CN 104209711B CN 201410493260 A CN201410493260 A CN 201410493260A CN 104209711 B CN104209711 B CN 104209711B
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- inner ring
- pivoting support
- support inner
- wind
- heat treatment
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/64—Special methods of manufacture
Abstract
The present invention relates to ring processing method in a kind of wind-powered electricity generation pivoting support, first carry out roughing, first pivoting support inner ring is carried out roughing, process internal tooth and the inner ring side raceway of pivoting support inner ring, and retain surplus 0.62-0.78mm; Subsequently heat-treated, carry out heat treatment to completing rough machined pivoting support inner ring, heat treatment includes Quench heating, tempering and selective hardening successively; Last polish, first carries out turning with alloy cutter, when surplus is 0.02mm-0.03mm, when carrying out being ground to dimensional requirement with emery wheel, is finally ground with polishing sand, makes size and roughness reach technology requirement. It is an advantage of the current invention that: in the wind-powered electricity generation revolving support of the present invention, ring processing method is simple, by specific Technology for Heating Processing so that the revolving support inner ring hardness of processing is high, improves qualification rate and the service life of revolving support inner ring.
Description
Technical field
The present invention relates to ring processing method in a kind of wind-powered electricity generation pivoting support, particularly to ring processing method in the wind-powered electricity generation pivoting support of a kind of high qualification rate.
Background technology
Wind-power electricity generation receives the great attention of world's every country in recent years due to its environmental protection, and wind-powered electricity generation industry development is quite rapid. Therefore wind power generation bearing has wide market prospect. Steel ball bearing on wind-driven generator generally has: yaw, pitch variable bearings, dynamo bearing. Wind-driven generator works throughout the year in the wild, and it is in use directly exposed to rain, snow and sunlight and descends, and has use bad environments, the feature that maintenance cost is high. Therefore generating set overall operation stability, impact resistance, service life are all proposed significantly high requirement.
Along with developing rapidly of wind-powered electricity generation industry, the various performance indications such as the precision of unit pivoting support, hardness and intensity are required also more and more higher by it. During fabrication, its heat treatment method adopts the heat treatment mode that bearing industry is common to current wind-powered electricity generation pivoting support, and the produced qualified rate variance of wind-powered electricity generation floating bearing, hardness is low, and service life is short.
Therefore, in the wind-powered electricity generation revolving support of urgent need research and development a kind of hardness qualification rate high, high, long service life, ring processing method is imperative.
Summary of the invention
The technical problem to be solved in the present invention is to provide ring processing method in the wind-powered electricity generation revolving support of a kind of hardness qualification rate high, high, long service life.
For solving above-mentioned technical problem, the technical scheme is that ring processing method in a kind of wind-powered electricity generation revolving support, its innovative point is in that: first carry out roughing, first pivoting support inner ring is carried out roughing, process internal tooth and the inner ring side raceway of pivoting support inner ring, and retain surplus 0.62-0.78mm;
Heat treatment: carry out heat treatment to completing rough machined pivoting support inner ring, heat treatment includes Quench heating, tempering and selective hardening successively, pivoting support inner ring is placed in meshbeltfurnace and carries out Quenching Treatment, opening protection gas after pivoting support inner ring enters stove and discharge foreign gas, this protection throughput controls at 16-17ml/min; Making pivoting support inner ring stop 45-48min in meshbeltfurnace after reaching hardening heat in meshbeltfurnace, hardening heat is 853 �� 3 DEG C, hardening media be concentration 8.5 ~ 8.8% Na2CO3Solution; Tempering stage, carries out temper in the 2min after completing quenching, and temperature controls at 215 ~ 218 DEG C, is incubated 2 ~ 3h, and after tempering completes, air cooling is to room temperature;
Polish: first carry out turning with alloy cutter, when surplus is 0.02mm-0.03mm, when carrying out being ground to dimensional requirement with emery wheel, is finally ground with polishing sand, makes size and roughness reach technology requirement.
Further, during described heat treatment, protection gas is dissociated methanol gas.
It is an advantage of the current invention that: ring processing method in the wind-powered electricity generation revolving support of the present invention, three steps are divided to carry out, respectively roughing, heat treatment and polish, surplus 0.62-0.78mm is retained when roughing, it is easy to postorder processing, makes manufacture revolving support inner ring reach technology requirement; In heat treatment process, open protection gas and discharge foreign gas, and utilize Na2CO3The characteristic that solution high temperature cooling rate is faster than oil, less than, on the decarburized layer basis of the allowance degree of depth, improve the hardness of processing revolving support inner ring; During polish, by turning, grinding and grinding so that the revolving support inner ring of processing reaches technology requirement, improve qualification rate and the service life of revolving support inner ring.
Accompanying drawing explanation
Fig. 1 is the structural representation of the wind-powered electricity generation revolving support inner ring adopting the processing method of the present invention to process.
Detailed description of the invention
Embodiment 1
As it is shown in figure 1, the invention discloses ring processing method in a kind of wind-powered electricity generation revolving support, the method particularly as follows:
Roughing: first pivoting support inner ring 1 is carried out roughing, processes internal tooth 2 and the inner ring side raceway 3 of pivoting support inner ring, and retains surplus 0.62-0.78mm;
Heat treatment: carry out heat treatment to completing rough machined pivoting support inner ring, heat treatment includes Quench heating, tempering and selective hardening successively, pivoting support inner ring is placed in meshbeltfurnace and carries out Quenching Treatment, protection gas dissociated methanol gas is opened after pivoting support inner ring enters stove, discharging foreign gas, this protection throughput controls at 16-17ml/min; Making pivoting support inner ring stop 45-48min in meshbeltfurnace after reaching hardening heat in meshbeltfurnace, hardening heat is 853 �� 3 DEG C, hardening media be concentration 8.5 ~ 8.8% Na2CO3Solution; Tempering stage, carries out temper in the 2min after completing quenching, and temperature controls at 215 ~ 218 DEG C, is incubated 2 ~ 3h, and after tempering completes, air cooling is to room temperature;
Polish: first carry out turning with alloy cutter, when surplus is 0.02mm-0.03mm, when carrying out being ground to dimensional requirement with emery wheel, is finally ground with polishing sand, makes size and roughness reach technology requirement.
In the present embodiment, point three steps carry out, respectively roughing, heat treatment and polish, retain surplus 0.62-0.78mm when roughing, it is simple to postorder is processed, and makes manufacture revolving support inner ring reach technology requirement;In heat treatment process, open protection gas and discharge foreign gas, and utilize Na2CO3The characteristic that solution high temperature cooling rate is faster than oil, less than, on the decarburized layer basis of the allowance degree of depth, improve the hardness of processing revolving support inner ring; During polish, by turning, grinding and grinding so that the revolving support inner ring of processing reaches technology requirement, improve qualification rate and the service life of revolving support inner ring.
Following table is the floating bearing inner ring that 1000 present invention process, properties test result after being divided into four groups:
As seen from the above table, the floating bearing inner ring hardness that the inventive method processes is high, and qualification rate is high.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described. Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; described in above-described embodiment and description is that principles of the invention is described; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within the claimed scope of the invention. Claimed scope is defined by appending claims and equivalent thereof.
Claims (2)
1. ring processing method in a wind-powered electricity generation pivoting support, it is characterised in that:
First carry out roughing, first pivoting support inner ring is carried out roughing, process internal tooth and the inner ring side raceway of pivoting support inner ring, and retain surplus 0.62-0.78mm;
Heat treatment: carry out heat treatment to completing rough machined pivoting support inner ring, heat treatment includes quenching, tempering and selective hardening successively, pivoting support inner ring is placed in meshbeltfurnace and carries out Quenching Treatment, opening protection gas after pivoting support inner ring enters stove and discharge foreign gas, this protection throughput controls at 16-17ml/min; Making pivoting support inner ring stop 45-48min in meshbeltfurnace after reaching hardening heat in meshbeltfurnace, hardening heat is 853 �� 3 DEG C, hardening media be concentration 8.5 ~ 8.8% Na2CO3Solution; Tempering stage, carries out temper in the 2min after completing quenching, and temperature controls at 215 ~ 218 DEG C, is incubated 2 ~ 3h, and after tempering completes, air cooling is to room temperature;
Polish: first carry out turning with alloy cutter, when surplus is 0.02mm-0.03mm, when carrying out being ground to dimensional requirement with emery wheel, is finally ground with polishing sand, makes size and roughness reach technology requirement.
2. ring processing method in wind-powered electricity generation pivoting support according to claim 1, it is characterised in that: during described heat treatment, protection gas is dissociated methanol gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410493260.7A CN104209711B (en) | 2014-09-24 | 2014-09-24 | Ring processing method in a kind of wind-powered electricity generation pivoting support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410493260.7A CN104209711B (en) | 2014-09-24 | 2014-09-24 | Ring processing method in a kind of wind-powered electricity generation pivoting support |
Publications (2)
| Publication Number | Publication Date |
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| CN104209711A CN104209711A (en) | 2014-12-17 |
| CN104209711B true CN104209711B (en) | 2016-06-08 |
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| CN201410493260.7A Active CN104209711B (en) | 2014-09-24 | 2014-09-24 | Ring processing method in a kind of wind-powered electricity generation pivoting support |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105414980B (en) * | 2015-12-10 | 2017-05-24 | 马鞍山华东回转支承有限公司 | Manufacturing method of slewing bearing |
| CN105950832A (en) * | 2016-05-31 | 2016-09-21 | 中山市恒发金属热处理有限公司 | Decarbonization treatment technology for nut clamps |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1603057A (en) * | 2004-08-26 | 2005-04-06 | 薛安志 | Precision casting and extrusion processing technique of high-carbon chromium bearing steel cycloid wheel |
| CN101733642A (en) * | 2009-11-16 | 2010-06-16 | 江苏万达特种轴承有限公司 | Process for machining L-shaped ferrule of rotary bearing |
| CN103331456A (en) * | 2013-06-26 | 2013-10-02 | 上海斐赛轴承科技有限公司 | Machining method of rolling bearing formed by whole and precise hard turning and molding of sleeve ring |
| EP2672132A2 (en) * | 2012-06-06 | 2013-12-11 | Jtekt Corporation | Method of manufacturing bearing ring of rolling bearing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0439413A (en) * | 1990-06-04 | 1992-02-10 | Koyo Seiko Co Ltd | Cloth roller bearing and its manufacture |
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2014
- 2014-09-24 CN CN201410493260.7A patent/CN104209711B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1603057A (en) * | 2004-08-26 | 2005-04-06 | 薛安志 | Precision casting and extrusion processing technique of high-carbon chromium bearing steel cycloid wheel |
| CN101733642A (en) * | 2009-11-16 | 2010-06-16 | 江苏万达特种轴承有限公司 | Process for machining L-shaped ferrule of rotary bearing |
| EP2672132A2 (en) * | 2012-06-06 | 2013-12-11 | Jtekt Corporation | Method of manufacturing bearing ring of rolling bearing |
| CN103331456A (en) * | 2013-06-26 | 2013-10-02 | 上海斐赛轴承科技有限公司 | Machining method of rolling bearing formed by whole and precise hard turning and molding of sleeve ring |
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| CN104209711A (en) | 2014-12-17 |
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Effective date of registration: 20191216 Address after: Room 501, Office Building of Market Supervision Bureau of Langchuan Avenue, Jianping Town, Langxi County, Xuancheng City, Anhui Province Patentee after: Yang Jiawei Address before: 226500, Jiangsu, Nantong City, Rugao Province Town Industrial Park North Patentee before: Rugao Nonstandard Bearing Co., Ltd. |
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Effective date of registration: 20200109 Address after: 214000 No.21, Xihong Road, industrial concentration zone, Meicun Town, Wuxi New District, Jiangsu Province Patentee after: WUXI LIJUN BEARING CO., LTD. Address before: Room 501, Office Building of Market Supervision Bureau of Langchuan Avenue, Jianping Town, Langxi County, Xuancheng City, Anhui Province Patentee before: Yang Jiawei |
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