CN104227358A - Production technology for nut special for commercial vehicle - Google Patents
Production technology for nut special for commercial vehicle Download PDFInfo
- Publication number
- CN104227358A CN104227358A CN201410469838.5A CN201410469838A CN104227358A CN 104227358 A CN104227358 A CN 104227358A CN 201410469838 A CN201410469838 A CN 201410469838A CN 104227358 A CN104227358 A CN 104227358A
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- China
- Prior art keywords
- nut
- production technology
- commercial car
- hours
- room temperature
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention discloses a production technology for a nut special for a commercial vehicle. The production technology is implemented by the following steps of 1, performing spheroidizing annealing on the raw material by taking 40Cr as a raw material; 2, performing cold heading and extrusion forming on the material to prepare a nut blank; 3, turning the nut blank; 4, tapping the nut blank; 5, performing thermal treatment on the nut blank; 6, cleaning, electroplating and packaging the nut. According to the production technology, the production efficiency of the nut special for the commercial vehicle can be improved, energy consumption can be reduced, the intensity of the nut is improved, and the service life is prolonged.
Description
[technical field]
The present invention relates to the technical field of the production technology of nut, particularly a kind of technical field of commercial car specialized nut production technology.
[background technology]
The purposes of nut widely, according to the difference of purposes and environment, the material that nut adopts is also different with manufacturing process, the wheel of commercial car is fixing by multiple large nut, news report was once had to have a commercial truck, on expressway, in driving process, one of them wheel drops, the generation of this phenomenon and the capability and performance of nut have close relationship, because commercial car tire changing is more ordinary, loading capacity is large, so nut strength can decline, the nut life-span that prior art is produced is shorter, intensity is not well positioned to meet the demand of commercial car application, in order to improve the deficiency of material mechanical performance, need adopt and improve processing method to improve the mechanical property of material.
[summary of the invention]
Object of the present invention solves the problems of the prior art exactly, proposes a kind of commercial car specialized nut production technology, can improve the production efficiency of commercial car nut, can reduce energy resource consumption, improve the intensity of nut, extend the life-span.
For achieving the above object, the present invention proposes a kind of commercial car specialized nut production technology, realized by following steps: take 40Cr as raw material, first spheroidizing is carried out to raw material; Second step, by extruded for material cold-heading, makes nut blank; 3rd step carries out turning to nut blank; 4th step carries out tapping to nut blank; 5th step is heat-treated nut blank; 6th step is cleaned nut, electroplating processes and packaging.
As preferably, described spheroidizing raw material is first heated to 700 DEG C ~ about 810 DEG C, then according to part dimension insulation 2 ~ 5 hours, again with the speed cooling of 25 DEG C/h ~ 35 DEG C DEG C/h, 650 DEG C ~ 720 DEG C insulations 2 ~ 4 hours, then be cooled to 620 DEG C ~ 680 DEG C with the speed being less than 25 DEG C/h ~ 35 DEG C DEG C/h.
As preferably, described turning refers to carries out machine tooling to nut blank step place.
As preferably, described tapping is that the principle utilizing axle to move certain helical pitch sequence distance manufactures nut thread, and workpiece opposite tool is in rotary moving, forces workpiece opposite piece axle to move certain helical pitch sequence distance.
As preferably, described heat treatment comprises normalized treatment, temper and modifier treatment again.
As preferably, described normalized treatment, temperature is 900-1150 DEG C, and the time is 8.1 ~ 9 hours, is then chilled to room temperature.
As preferably, described temper, temperature is 480-540 DEG C, and the time is 8 ~ 9 hours, is then chilled to room temperature.
As preferably, described modifier treatment again carries out Quenching Treatment with quenching oil under 750-870 DEG C of condition, and oil cooling 5 ~ 6 hours laggard line spaces are cold, tempering when being chilled to 310 DEG C, temperature 520 DEG C ~ 580 DEG C, tempering time 18 ~ 19 hours, then air cooling is to room temperature.
As preferably, described 6th step be by nut after oil removing, acid pickling and rust removing in pH value be 0.2 ~ 0.5 condition under room temperature blackening process 3 ~ 4 hours.
As preferably, the hair blackening liquid adopted during described room temperature blackening process is made up of main film forming agent and additive, and described additive is made up of the stabilizing agent that turns black, surface active agent, pH value buffer, speed adjusting agent and secondary film formers.
Beneficial effect of the present invention: the present invention, by utilizing the explained hereafter nut of cold-rolling treatment, can reduce the energy resource consumption in nut production process, reduce production cost, improve production efficiency, improve the intensity of nut, the life-span is longer simultaneously, and security is higher.
Feature of the present invention and advantage will be described in detail by embodiment.
[detailed description of the invention]
A kind of commercial car specialized nut of the present invention production technology, is realized by following steps: take 40Cr as raw material, first carry out spheroidizing to raw material; Second step, by extruded for material cold-heading, makes nut blank; 3rd step carries out turning to nut blank; 4th step carries out tapping to nut blank; 5th step is heat-treated nut blank; 6th step is cleaned nut, electroplating processes and packaging.Described spheroidizing raw material is first heated to 700 DEG C ~ about 810 DEG C, then according to part dimension insulation 2 ~ 5 hours, again with the speed cooling of 25 DEG C/h ~ 35 DEG C DEG C/h, 650 DEG C ~ 720 DEG C insulations 2 ~ 4 hours, then be cooled to 620 DEG C ~ 680 DEG C with the speed being less than 25 DEG C/h ~ 35 DEG C DEG C/h.Described turning refers to carries out machine tooling to nut blank step place.Described tapping is that the principle utilizing axle to move certain helical pitch sequence distance manufactures nut thread, and workpiece opposite tool is in rotary moving, forces workpiece opposite piece axle to move certain helical pitch sequence distance.Described heat treatment comprises normalized treatment, temper and modifier treatment again.Described normalized treatment, temperature is 900-1150 DEG C, and the time is 8.1 ~ 9 hours, is then chilled to room temperature.Described temper, temperature is 480-540 DEG C, and the time is 8 ~ 9 hours, is then chilled to room temperature.Described modifier treatment again carries out Quenching Treatment with quenching oil under 750-870 DEG C of condition, and oil cooling 5 ~ 6 hours laggard line spaces are cold, and tempering when being chilled to 310 DEG C, temperature 520 DEG C ~ 580 DEG C, tempering time 18 ~ 19 hours, then air cooling is to room temperature.Described 6th step be by nut after oil removing, acid pickling and rust removing in pH value be 0.2 ~ 0.5 condition under room temperature blackening process 3 ~ 4 hours.The hair blackening liquid adopted during described room temperature blackening process is made up of main film forming agent and additive, and described additive is made up of the stabilizing agent that turns black, surface active agent, pH value buffer, speed adjusting agent and secondary film formers.
A kind of commercial car specialized nut of the present invention production technology, by utilizing the explained hereafter nut of cold-rolling treatment, can reduce the energy resource consumption in nut production process, improve production efficiency, improve the intensity of nut, the life-span is longer simultaneously, security is higher, reduces production cost.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, anyly all belongs to protection scope of the present invention to the scheme after simple transformation of the present invention.
Claims (10)
1. a commercial car specialized nut production technology, is realized by following steps: take 40Cr as raw material, first carry out spheroidizing to raw material; Second step, by extruded for material cold-heading, makes nut blank; 3rd step carries out turning to nut blank; 4th step carries out tapping to nut blank; 5th step is heat-treated nut blank; 6th step is cleaned nut, electroplating processes and packaging.
2. a kind of commercial car specialized nut production technology as claimed in claim 1, it is characterized in that: described spheroidizing raw material is first heated to 700 DEG C ~ about 810 DEG C, then according to part dimension insulation 2 ~ 5 hours, again with the speed cooling of 25 DEG C/h ~ 35 DEG C DEG C/h, 650 DEG C ~ 720 DEG C insulations 2 ~ 4 hours, then be cooled to 620 DEG C ~ 680 DEG C with the speed being less than 25 DEG C/h ~ 35 DEG C DEG C/h.
3. a kind of commercial car specialized nut production technology as claimed in claim 1, is characterized in that: described turning refers to carries out machine tooling to nut blank step place.
4. a kind of commercial car specialized nut production technology as claimed in claim 1, it is characterized in that: described tapping is that the principle utilizing axle to move certain helical pitch sequence distance manufactures nut thread, workpiece opposite tool is in rotary moving, forces workpiece opposite piece axle to move certain helical pitch sequence distance.
5. a kind of commercial car specialized nut production technology as claimed in claim 1, is characterized in that: described heat treatment comprises normalized treatment, temper and modifier treatment again.
6. a kind of commercial car specialized nut production technology as claimed in claim 5, it is characterized in that: described normalized treatment, temperature is 900-1150 DEG C, and the time is 8.1 ~ 9 hours, is then chilled to room temperature.
7. a kind of commercial car specialized nut production technology as claimed in claim 5, it is characterized in that: described temper, temperature is 480-540 DEG C, and the time is 8 ~ 9 hours, is then chilled to room temperature.
8. a kind of commercial car specialized nut production technology as claimed in claim 5, it is characterized in that: described modifier treatment again carries out Quenching Treatment with quenching oil under 750-870 DEG C of condition, oil cooling 5 ~ 6 hours laggard line spaces are cold, tempering when being chilled to 310 DEG C, temperature 520 DEG C ~ 580 DEG C, tempering time 18 ~ 19 hours, then air cooling is to room temperature.
9. a kind of commercial car specialized nut production technology as claimed in claim 1, is characterized in that: described 6th step be by nut after oil removing, acid pickling and rust removing in pH value be 0.2 ~ 0.5 condition under room temperature blackening process 3 ~ 4 hours.
10. a kind of commercial car specialized nut production technology as claimed in claim 9, it is characterized in that: the hair blackening liquid adopted during described room temperature blackening process is made up of main film forming agent and additive, described additive is made up of the stabilizing agent that turns black, surface active agent, pH value buffer, speed adjusting agent and secondary film formers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410469838.5A CN104227358A (en) | 2014-09-16 | 2014-09-16 | Production technology for nut special for commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410469838.5A CN104227358A (en) | 2014-09-16 | 2014-09-16 | Production technology for nut special for commercial vehicle |
Publications (1)
| Publication Number | Publication Date |
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| CN104227358A true CN104227358A (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410469838.5A Pending CN104227358A (en) | 2014-09-16 | 2014-09-16 | Production technology for nut special for commercial vehicle |
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| CN (1) | CN104227358A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238950A (en) * | 2015-10-12 | 2016-01-13 | 浙江朋诚科技有限公司 | Copper alloy protection nut and manufacturing method thereof |
| CN107344281A (en) * | 2017-06-27 | 2017-11-14 | 重庆市金渝管道设备有限公司 | A kind of processing technology of agricultural mill general purpose accessory |
| CN107939809A (en) * | 2017-09-30 | 2018-04-20 | 东风商用车有限公司 | A kind of nut fixed structure and its manufacture method |
| CN109531071A (en) * | 2018-12-25 | 2019-03-29 | 重庆旺达汽车零部件有限公司 | A kind of nut production technology |
| CN110900118A (en) * | 2019-10-28 | 2020-03-24 | 瑞安市振安车辆配件有限公司 | Nut machining process |
| CN110961871A (en) * | 2019-12-23 | 2020-04-07 | 温州市瑞泰紧固件有限公司 | Nut machining process |
| CN113275842A (en) * | 2021-05-27 | 2021-08-20 | 浙江方泉汽车标准件股份有限公司 | Production process of high-strength rivet nut |
| CN113464535A (en) * | 2021-05-26 | 2021-10-01 | 浙江坤厚汽车零部件股份有限公司 | Production process of high-strength rivet nut |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2368889A (en) * | 2000-11-09 | 2002-05-15 | Textron Fastening Syst Ltd | Method of manufacturing a blind threaded insert |
| JP3785113B2 (en) * | 2002-04-26 | 2006-06-14 | Ｊｆｅ条鋼株式会社 | High-strength bolts and nuts excellent in fire resistance and method for producing the same |
| CN102943207A (en) * | 2012-11-09 | 2013-02-27 | 谢亚平 | High-strength fastener and processing method thereof |
| CN103921064A (en) * | 2014-03-17 | 2014-07-16 | 宁波固远管件有限公司 | Technology for machining cold upset nuts |
-
2014
- 2014-09-16 CN CN201410469838.5A patent/CN104227358A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2368889A (en) * | 2000-11-09 | 2002-05-15 | Textron Fastening Syst Ltd | Method of manufacturing a blind threaded insert |
| JP3785113B2 (en) * | 2002-04-26 | 2006-06-14 | Ｊｆｅ条鋼株式会社 | High-strength bolts and nuts excellent in fire resistance and method for producing the same |
| CN102943207A (en) * | 2012-11-09 | 2013-02-27 | 谢亚平 | High-strength fastener and processing method thereof |
| CN103921064A (en) * | 2014-03-17 | 2014-07-16 | 宁波固远管件有限公司 | Technology for machining cold upset nuts |
Non-Patent Citations (3)
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| 张玉庭: "《简明热处理工手册》", 31 March 2013, 机械工业出版社 * |
| 樊东黎: "《热加工工艺规范》", 31 January 2003, 机械工业出版社 * |
| 欧雪梅、江利: "《工程材料》", 30 November 2009, 中国矿业大学出版社 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238950A (en) * | 2015-10-12 | 2016-01-13 | 浙江朋诚科技有限公司 | Copper alloy protection nut and manufacturing method thereof |
| CN107344281A (en) * | 2017-06-27 | 2017-11-14 | 重庆市金渝管道设备有限公司 | A kind of processing technology of agricultural mill general purpose accessory |
| CN107939809A (en) * | 2017-09-30 | 2018-04-20 | 东风商用车有限公司 | A kind of nut fixed structure and its manufacture method |
| CN109531071A (en) * | 2018-12-25 | 2019-03-29 | 重庆旺达汽车零部件有限公司 | A kind of nut production technology |
| CN110900118A (en) * | 2019-10-28 | 2020-03-24 | 瑞安市振安车辆配件有限公司 | Nut machining process |
| CN110961871A (en) * | 2019-12-23 | 2020-04-07 | 温州市瑞泰紧固件有限公司 | Nut machining process |
| CN113464535A (en) * | 2021-05-26 | 2021-10-01 | 浙江坤厚汽车零部件股份有限公司 | Production process of high-strength rivet nut |
| CN113275842A (en) * | 2021-05-27 | 2021-08-20 | 浙江方泉汽车标准件股份有限公司 | Production process of high-strength rivet nut |
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| PB01 | Publication | ||
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Application publication date: 20141224 |