CN103468915A - Heat treatment method of high-temperature-resistant rolling needle - Google Patents
Heat treatment method of high-temperature-resistant rolling needle Download PDFInfo
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- CN103468915A CN103468915A CN2013104294669A CN201310429466A CN103468915A CN 103468915 A CN103468915 A CN 103468915A CN 2013104294669 A CN2013104294669 A CN 2013104294669A CN 201310429466 A CN201310429466 A CN 201310429466A CN 103468915 A CN103468915 A CN 103468915A
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Abstract
The invention relates to the technical field of production of rolling needles, and in particular relates to a heat treatment method of a high-temperature-resistant rolling needle. The method comprises the following steps of: performing preheating, heat preservation and tempering on a workpiece and specifically comprises the following steps: a, preheating the workpiece in an environment of which the temperature is 800-900 DEG C; b, heating the workpiece to 1000-1200 DEG C, and performing heat preservation for 8-35 minutes; c, cooling the workpiece to the normal temperature; d, tempering the workpiece for three times, wherein the tempering temperature is 450-600 DEG C and the tempering time of each tempering is 1.5-2.5 hours; e, cooling to the normal temperature after each tempering. The rolling needle produced by using the heat treatment method of the high-temperature-resistant rolling needle can be used for a long time in an environment of which the working temperature is lower than 315 DEG C in a using process, and has high high-temperature dimensional stability, high-temperature hardness and high-temperature contact fatigue resistance. By adopting the method, the problem that a needle bearing at a big end of a connecting rod is damaged by high-temperature adhesion when a motor tricycle is in a condition of low speed and high load is solved, and the service life of the needle bearing is prolonged.
Description
Technical field
The present invention relates to the needle roller production technical field, especially a kind of heat treating method of high temperature resistant type needle roller.
Background technology
Needle roller is SUJ2 or GCr15 bearing steel pansclerosis type at present, needle roller high thermal resistance deficiency: in the situation that normally use lower than 120 ℃, the short period of time can normally used below 150 ℃.If used higher than 150 ℃ for a long time, can produce high temperature annealing, cause the needle roller lower hardness, after lower hardness, make the needle roller wear out failure.If needle roller is used in the environment higher than 180 ℃ of temperature, can only be that the needle roller lower hardness damages.
Summary of the invention
In order to overcome the poor deficiency of existing needle roller resistance to elevated temperatures, the invention provides a kind of heat treating method of high temperature resistant type needle roller.
The technical solution adopted for the present invention to solve the technical problems is: a kind of heat treating method of high temperature resistant type needle roller, comprise workpiece preheating, insulation and temper, and it is characterized in that:
A, workpiece is placed under the environment of 800 ℃-900 ℃ and carries out preheating, be warm up time: 5min-10min;
B, workpiece is heated to 1000 ℃-1200 ℃, and insulation 8min-35min;
C, by work-piece cools to normal temperature, in the residence time in normal temperature stage, be: 30min-210min;
D, workpiece is carried out to tempering 3 times, 450 ℃-600 ℃ of tempering temperatures, the each 1.5h-2.5h of tempering time;
E, each tempering are cooled to normal temperature, in the residence time in normal temperature stage, are: 30min-210min.
The invention has the beneficial effects as follows, the needle roller of producing under the heat treating method of this high temperature resistant type needle roller, can use in the working temperature environment lower than 315 ℃ for a long time in the process of using, there is higher high temperature dimensional stability, hot hardness, high temperature contact resistance to fatigue.Solve motor tricycle under low speed, high load condition, the problem that the adhesion of connecting rod tip needle bearing high temperature damages, the work-ing life of improving needle bearing.
Embodiment
A kind of heat treating method of high temperature resistant type needle roller, comprise workpiece preheating, insulation and temper, it is characterized in that:
A, workpiece is placed under the environment of 800 ℃-900 ℃ and carries out preheating, be warm up time: 5min-10min;
B, workpiece is heated to 1000 ℃-1200 ℃, and insulation 8min-35min;
C, by work-piece cools to normal temperature, in the residence time in normal temperature stage, be: 30min-210min;
D, workpiece is carried out to tempering 3 times, 450 ℃-600 ℃ of tempering temperatures, the each 1.5h-2.5h of tempering time;
E, each tempering are cooled to normal temperature, in the residence time in normal temperature stage, are: 30min-210min.
The heat treating method of this high temperature resistant type needle roller, by the mode of high tempering, has improved the high thermal resistance of needle roller, and the intensity of needle roller, meets when in use service requirements.
The first embodiment of the present invention;
A, workpiece is placed under the environment of 840 ℃ and carries out preheating, be warm up time: 5min;
B, workpiece is heated to 1100 ℃, and insulation 10min.
C, by work-piece cools to normal temperature, in the residence time in normal temperature stage, be: 30min;
D, workpiece is carried out to tempering 3 times, 500 ℃ of tempering temperatures, the each 1.8h of tempering time.
E, each tempering are cooled to normal temperature, in the residence time in normal temperature stage, are: 30min.
The second embodiment of the present invention;
A, workpiece is placed under the environment of 860 ℃ and carries out preheating, be warm up time: 8min;
B, workpiece is heated to 1110 ℃, and insulation 20min.
C, by work-piece cools to normal temperature, in the residence time in normal temperature stage, be: 100min;
D, workpiece is carried out to tempering 3 times, 530 ℃ of tempering temperatures, the each 2h of tempering time.
E, each tempering are cooled to normal temperature, in the residence time in normal temperature stage, are: 100min.
The third embodiment of the present invention;
A, workpiece is placed under the environment of 880 ℃ and carries out preheating, be warm up time: 10min;
B, workpiece is heated to 1120 ℃, and insulation 30min.
C, by work-piece cools to normal temperature, in the residence time in normal temperature stage, be: 210min;
D, workpiece is carried out to tempering 3 times, 560 ℃ of tempering temperatures, the each 2.2h of tempering time.
E, each tempering are cooled to normal temperature, in the residence time in normal temperature stage, are: 210min.
Claims (1)
1. the heat treating method of a high temperature resistant type needle roller, comprise workpiece preheating, insulation and temper, it is characterized in that:
A, workpiece is placed under the environment of 800 ℃-900 ℃ and carries out preheating, be warm up time: 5min-10min;
B, workpiece is heated to 1000 ℃-1200 ℃, and insulation 8min-35min;
C, by work-piece cools to normal temperature, in the residence time in normal temperature stage, be: 30min-210min;
D, workpiece is carried out to tempering 3 times, 450 ℃-600 ℃ of tempering temperatures, the each 1.5h-2.5h of tempering time;
E, each tempering are cooled to normal temperature, in the residence time in normal temperature stage, are: 30min-210min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104294669A CN103468915A (en) | 2013-09-22 | 2013-09-22 | Heat treatment method of high-temperature-resistant rolling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104294669A CN103468915A (en) | 2013-09-22 | 2013-09-22 | Heat treatment method of high-temperature-resistant rolling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103468915A true CN103468915A (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104294669A Pending CN103468915A (en) | 2013-09-22 | 2013-09-22 | Heat treatment method of high-temperature-resistant rolling needle |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998041663A1 (en) * | 1997-03-15 | 1998-09-24 | Fag Aircraft/Super Precision Bearings Gmbh | High-performance rolling bearings or rolling components |
| CN101248204A (en) * | 2005-08-24 | 2008-08-20 | 尤迪霍尔姆工具公司 | Steel alloy and tools or components manufactured out of the steel alloy |
| CN101603149A (en) * | 2009-07-28 | 2009-12-16 | 攀枝花新钢钒股份有限公司 | A kind of low-alloy high-speed steel |
| CN102441768A (en) * | 2010-11-15 | 2012-05-09 | 江苏万达特种轴承有限公司 | Technology for processing dual-hardness roller sleeve ring of bearing steel |
| CN102950424A (en) * | 2011-08-26 | 2013-03-06 | 宝山钢铁股份有限公司 | Preparation method of LD steel cold roll ejector for small-pore stainless seamless pipe |
-
2013
- 2013-09-22 CN CN2013104294669A patent/CN103468915A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998041663A1 (en) * | 1997-03-15 | 1998-09-24 | Fag Aircraft/Super Precision Bearings Gmbh | High-performance rolling bearings or rolling components |
| CN101248204A (en) * | 2005-08-24 | 2008-08-20 | 尤迪霍尔姆工具公司 | Steel alloy and tools or components manufactured out of the steel alloy |
| CN101603149A (en) * | 2009-07-28 | 2009-12-16 | 攀枝花新钢钒股份有限公司 | A kind of low-alloy high-speed steel |
| CN102441768A (en) * | 2010-11-15 | 2012-05-09 | 江苏万达特种轴承有限公司 | Technology for processing dual-hardness roller sleeve ring of bearing steel |
| CN102950424A (en) * | 2011-08-26 | 2013-03-06 | 宝山钢铁股份有限公司 | Preparation method of LD steel cold roll ejector for small-pore stainless seamless pipe |
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Application publication date: 20131225 |