CN102267040B - Preparation method for stainless steel bearing steel tube and ferrule - Google Patents
Preparation method for stainless steel bearing steel tube and ferrule Download PDFInfo
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- CN102267040B CN102267040B CN2011101883003A CN201110188300A CN102267040B CN 102267040 B CN102267040 B CN 102267040B CN 2011101883003 A CN2011101883003 A CN 2011101883003A CN 201110188300 A CN201110188300 A CN 201110188300A CN 102267040 B CN102267040 B CN 102267040B
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- steel pipe
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Abstract
The invention discloses a preparation method of a stainless steel bearing steel tube. The method can improve yield and production efficiency and comprises the steps of: 1) heating and perforating: heating a round bar to 1,040 DEG C-1,070 DEG C, carrying out thermal insulation for 20-30 minutes, perforating at a speed of 10-18 meters per minute, thus obtaining a tube blank; 2) annealing at equal temperature: heating the tube blank to 830-850 DEG C, carrying out thermal insulation for 2-3 hours, then cooling to 700-720 DEG C at a cooling speed less then 30 DEG C per hour, and then discharging under the condition that a cooling speed is less than 50 DEG C per hour; 3) rolling: heating the annealed tube blank to 250-300 DEG C, and then rolling the annealed tube blank into a bearing steel tube with a given size at a speed of 7-8mm per minute; and 4) stress relief annealing: increasing the temperature of the rolled bearing steel tube to 760-780 DEG C, carrying out thermal insulation for 2-3 hours, then discharging under the condition that a cooling speed is less than 50 DEG C per hour. By adopting the preparation method, the stainless steel round bar made from 3Cr13 can be manufactured into the bearing steel tube meeting the requirement.
Description
Technical field
The present invention relates to a kind of preparation method of bearing ring, refer more particularly to a kind of preparation method of stainless steel shaft bearing ring.
Background technology
Along with the extensive popularization and application of non-maintaining technology, stainless steel bearing has obtained application more and more widely in food machinery, daily machinery and various corrosion-resistant field.Because the particularity of stainless steel; Present stainless steel bearing can only pass through round steel bar turning; Strike out lasso then; Traditional perforation tube-making process can't be used for the processing stainless steel bearing ring, so just makes that the lumber recovery of round steel bar is very low, and the production efficiency of stainless steel shaft bearing ring is lower.
Summary of the invention
Technical problem to be solved by this invention is: a kind of preparation method who improves the stainless steel bearing steel pipe of lumber recovery and production efficiency is provided.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the preparation method of stainless steel bearing steel pipe the steps include:
1) adds hot piercing: round bar is heated to 1040 ~ 1070 ℃, is incubated 20 ~ 30 minutes, bore a hole, obtain pipe with 10 ~ 18 meters/minute speed;
2) isothermal annealing: with heating of pipe blank to 830 ~ 850 ℃, be incubated 2 ~ 3 hours, then,, be cooled to 700 ~ 720 ℃, again to come out of the stove less than 50 ℃ cooling velocity per hour with less than 30 ℃ cooling velocity per hour;
3) rolling: annealed tube blank is heated to 250 ~ 300 ℃, and the speed with 7 ~ 8 millimeters of per minutes is rolling to the bearing steel pipe of given size with it then;
4) stress relief annealing: rolling good bearing steel pipe is warming up to 760 ~ 780 ℃, is incubated 2 ~ 3 hours, then, to come out of the stove less than 50 ℃ cooling velocity per hour.
Said stainless steel grade is 3Cr13.
To pass through pipe that described isothermal annealing obtains carry out pickling lubricated after, be rolled again; The bearing steel pipe that stress relief annealing obtains is aligned.
Another technical problem to be solved by this invention is: a kind of preparation method who improves the stainless steel shaft bearing ring of lumber recovery and production efficiency is provided.
For solving above-mentioned another technical problem, the technical scheme that the present invention adopts is: the preparation method of stainless steel shaft bearing ring, the steps include: the bearing steel pipe that the preparation method who adopts above-mentioned stainless steel bearing steel pipe obtains is cut, and obtain bearing ring.
The invention has the beneficial effects as follows: the preparation method who adopts stainless steel bearing steel pipe of the present invention; Can the stainless steel round bar of 3Cr13 material be processed satisfactory bearing steel pipe; Then; The bearing steel pipe is cut into bearing ring, improved the production efficiency of the lumber recovery and the stainless steel shaft bearing ring of stainless steel round bar greatly.
The specific embodiment
Describe specific embodiments of the present invention below in detail.
The preparation method of stainless steel bearing steel pipe of the present invention the steps include:
1) adds hot piercing: the round bar of 3Cr13 material is heated to 1040 ~ 1070 ℃, is incubated 20 ~ 30 minutes, bore a hole, obtain pipe with 10 ~ 18 meters/minute speed;
2) isothermal annealing: with heating of pipe blank to 830 ~ 850 ℃, be incubated 2 ~ 3 hours, then,, be cooled to 700 ~ 720 ℃, again to come out of the stove less than 50 ℃ cooling velocity per hour with less than 30 ℃ cooling velocity per hour;
3) rolling: annealed tube blank is heated to 250 ~ 300 ℃, and the speed with 7 ~ 8 millimeters of per minutes is rolling to the bearing steel pipe of given size with it then;
4) stress relief annealing: rolling good bearing steel pipe is warming up to 760 ~ 780 ℃ in 0.6 ~ 1 hour, is incubated 2 ~ 3 hours, then, to come out of the stove less than 50 ℃ cooling velocity per hour.
In the present embodiment, cause damage in order to prevent rolling surface to pipe, will pass through pipe that isothermal annealing obtains carry out pickling lubricated after, be rolled again; In order to improve the glacing flatness of bearing ring pipe, the bearing steel pipe that stress relief annealing obtains is aligned.
Through the bearing steel pipe that above-mentioned preparation technology obtains, its performance parameter is following:
1. microscopic structure, equally distributed globular pearlite: press GB/T18254 grading figure, should be between 2 ~ 4 grades;
Actual measurement is 2.5 ~ 3 grades, meets standard.
2. Hardness Control: press the GB/T231 check, hardness should be between HBW185 ~ 240;
Actual measurement meets standard for HBW200 ~ 210.
3. decarburized layer check: press GB/T224, decarburized layer is answered≤0.20 millimeter;
Actual measurement is decarburized layer≤0.1 millimeter, meets standard.
4. mechanical performance test: press GB/T228, tensile strength should be between 600 ~ 800MPa;
Actual measurement is 660 ~ 700MPa, meets standard.
5. grain size check: press GB/T6394, grain size should be greater than 7 grades;
Measured grain size meets standard between 8 ~ 9.
Above-mentioned standard compliant bearing steel pipe is cut, just can obtain the stainless steel shaft bearing ring.
Claims (3)
1. the preparation method of stainless steel bearing steel pipe the steps include:
1) adds hot piercing: round bar is heated to 1040 ~ 1070 ℃, is incubated 20 ~ 30 minutes, bore a hole, obtain pipe with 10 ~ 18 meters/minute speed;
2) isothermal annealing: with heating of pipe blank to 830 ~ 850 ℃, be incubated 2 ~ 3 hours, then,, be cooled to 700 ~ 720 ℃, again to come out of the stove less than 50 ℃ cooling velocity per hour with less than 30 ℃ cooling velocity per hour;
3) rolling: annealed tube blank is heated to 250 ~ 300 ℃, and the speed with 7 ~ 8 millimeters of per minutes is rolling to the bearing steel pipe of given size with it then;
4) stress relief annealing: rolling good bearing steel pipe is warming up to 760 ~ 780 ℃, is incubated 2 ~ 3 hours, then, to come out of the stove less than 50 ℃ cooling velocity per hour;
Said stainless steel grade is 3Cr13.
2. the preparation method of stainless steel bearing steel pipe as claimed in claim 1 is characterized in that: will pass through pipe that described isothermal annealing obtains carry out pickling lubricated after, be rolled again; The bearing steel pipe that stress relief annealing obtains is aligned.
3. the preparation method of stainless steel shaft bearing ring the steps include: the bearing steel pipe that adopts the described preparation method of claim 1 to obtain is cut, and obtains bearing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101883003A CN102267040B (en) | 2011-06-16 | 2011-07-06 | Preparation method for stainless steel bearing steel tube and ferrule |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110162501.6 | 2011-06-16 | ||
| CN201110162501 | 2011-06-16 | ||
| CN2011101883003A CN102267040B (en) | 2011-06-16 | 2011-07-06 | Preparation method for stainless steel bearing steel tube and ferrule |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102267040A CN102267040A (en) | 2011-12-07 |
| CN102267040B true CN102267040B (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101883003A Expired - Fee Related CN102267040B (en) | 2011-06-16 | 2011-07-06 | Preparation method for stainless steel bearing steel tube and ferrule |
Country Status (1)
| Country | Link |
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| CN (1) | CN102267040B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699104A (en) * | 2012-06-11 | 2012-10-03 | 常熟市旋力轴承钢管有限公司 | Preparation method of G20CrNiMo bearing steel pipe |
| CN103643124B (en) * | 2013-11-20 | 2015-09-16 | 江苏天舜金属材料集团有限公司 | The working method of the above High Strength Steel Bar joint sleeve of a kind of 600MPa level |
| CN113245857B (en) * | 2021-05-06 | 2023-03-14 | 张家港保税区恒隆钢管有限公司 | Manufacturing process of heat exchange tube for seawater desalination evaporator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI265053B (en) * | 2004-01-16 | 2006-11-01 | Sumitomo Metal Ind | Method for producing seamless pipe |
| CN1259515C (en) * | 2004-07-13 | 2006-06-14 | 天津市天材科技发展有限公司 | Method for making ferrite stainless steel seamless pipes and cold working process thereof |
| JP4935812B2 (en) * | 2006-05-26 | 2012-05-23 | 住友金属工業株式会社 | Manufacturing method of seamless stainless steel pipe |
| CN101091984A (en) * | 2007-08-03 | 2007-12-26 | 攀钢集团攀枝花钢铁研究院 | Method for manufacturing stainless steel pipe |
| CN101612700B (en) * | 2008-06-23 | 2010-10-13 | 宝山钢铁股份有限公司 | Method for preparing seamless steel tubes made of martensite precipitation hardening stainless steel |
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2011
- 2011-07-06 CN CN2011101883003A patent/CN102267040B/en not_active Expired - Fee Related
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| CN102267040A (en) | 2011-12-07 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20160706 |