CN102896078A - Post-treatment method of surface of high-strength bolt connection pair - Google Patents
Post-treatment method of surface of high-strength bolt connection pair Download PDFInfo
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- CN102896078A CN102896078A CN2012103696260A CN201210369626A CN102896078A CN 102896078 A CN102896078 A CN 102896078A CN 2012103696260 A CN2012103696260 A CN 2012103696260A CN 201210369626 A CN201210369626 A CN 201210369626A CN 102896078 A CN102896078 A CN 102896078A
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Abstract
The invention belongs to the technology of surface treatment and relates to an improved post-treatment method of a surface of a high-strength bolt connection pair. The method is characterized by only post-treating a surface of a nut in the high-strength bolt connection pair. The treatment steps include lubricating agent preparation and surface post-treatment. According to the post-treatment method of the surface of the high-strength bolt connection pair, torque coefficients can be accurately controlled, temperature sensitiveness of the torque coefficients of the high-strength bolt connection pair is reduced, and requirements of great changes of environment using temperatures are met; and simultaneously, the process is simplified, the treatment efficiencies are improved, and the treatment costs are reduced.
Description
Technical field
The invention belongs to process for treating surface, relate to the improvement to the high strength bolt connection pairs surface treatment method.
Background technology
High strength bolt connection pairs is the steel structure connection fastening method of commonly using, and is widely used in the important events such as bridge, wind-powered electricity generation, building, so its some technical indicators (such as torque coefficient and standard deviation thereof etc.) must strict control.
At present high strength bolt connection pairs is carried out the surface-treated method and mainly contain two kinds, the one, the aftertreatment technology of surface granosealing+bolt immersion oil, nut and pad saponification is so that the torque coefficient of control high strength bolt connection pairs.The 2nd, surperficial Dacroment is processed+the surperficial post-processing approach that applies molybdenum bisuphide.The former shortcoming is: the torque coefficient of high strength bolt connection pairs is subjected to the impact of temperature larger, therefore before bolt connection pair dispatches from the factory, producer can only determine corresponding saponification process according to the environment serviceability temperature of bolt connection pair, because the ambient temperature differences in summer and winter is up to more than 50 ℃, be difficult to be taken into account, make torque coefficient larger error occur.The latter's shortcoming is: need to all apply molybdenum bisuphide to bolt, nut and pad, the coating of carrying out at the construction field (site) molybdenum bisuphide is not only time-consuming, and be difficult to guarantee to apply evenly, the torque coefficient standard deviation of high strength bolt connection pairs is larger, wayward when causing constructing.
Summary of the invention
The objective of the invention is: propose the high strength bolt connection pairs surface post-processing approach of the accurate control torque coefficient of a kind of energy, to reduce the temperature sensitivity of high strength bolt connection pairs torque coefficient, satisfy the requirement that the environment serviceability temperature significantly changes; Simultaneously, simplify technique, raise the efficiency, reduce processing cost.
Technical scheme of the present invention is: a kind of high strength bolt connection pairs surface post-processing approach, the high strength bolt connection pairs of doing the processing of phosphatization or Dacroment is carried out surperficial post processing, it is characterized in that: only the nut in the high strength bolt connection pairs is carried out surperficial post processing, the step of processing is:
1, prepare lubricant: lubricant is the W-6 series thin film lubricant that the Beijing Research Inst. of Aeronautic Material produces, and lubricant emulsion is put into vessel in heating to 80 ℃～90 ℃ and kept this temperature, and emulsion becomes evenly and without using behind the particle;
2, surperficial post processing: in the nut dip lubrication agent with high strength bolt connection pairs, take out behind immersion 5s～10s and drain liquid, natural drying or 60 ℃～80 ℃ lower oven dry.
Advantage of the present invention is: proposed the high strength bolt connection pairs surface post-processing approach of the accurate control torque coefficient of a kind of energy, reduced the temperature sensitivity of high strength bolt connection pairs torque coefficient, satisfied the requirement that the environment serviceability temperature significantly changes; Simultaneously, simplify technique, improved treatment effeciency, reduced processing cost.
The specific embodiment
The below is described in further details the present invention.A kind of high strength bolt connection pairs surface post-processing approach, the high strength bolt connection pairs of doing the processing of phosphatization or Dacroment is carried out surperficial post processing, it is characterized in that: only the nut in the high strength bolt connection pairs is carried out surperficial post processing, the step of processing is:
1, prepare lubricant: lubricant is the W-6 series thin film lubricant that the Beijing Research Inst. of Aeronautic Material produces, and lubricant emulsion is put into vessel in heating to 80 ℃～90 ℃ and kept this temperature, and emulsion becomes evenly and without using behind the particle;
2, surperficial post processing: in the nut dip lubrication agent with high strength bolt connection pairs, take out behind immersion 5s～10s and drain liquid, natural drying or 60 ℃～80 ℃ lower oven dry.
Operation principle of the present invention is: W-6 series thin film lubricant is the aqueous emulsion of pbz polymer polymer, and high molecular polymer fusing point wherein all is higher than 60 ℃, and the greasy property of these materials is subjected to the impact of temperature very little.After adopting this lubricant that bolt connection pair is lubricated processing, can form the good composite lubricating film layer of a tack on the surface of auxiliary connection, because the fusing point of the high molecular polymer of this composite lubricating film layer of composition is higher, in 0 ℃～60 ℃ temperature range, this thin layer all remains solid state, the transformation of phase can not occur, its greasy property is less to the sensitiveness of temperature, therefore, in 0 ℃～60 ℃ temperature range, the torque coefficient of auxiliary connection with and standard deviation all can satisfy the relevant criterion requirement.
Lubricant used in the present invention is the W-6 series thin film lubricant that the Beijing Research Inst. of Aeronautic Material produces, and this product is the commodity of public offering.
Embodiment 1
A kind of high strength bolt connection pairs surface post-processing approach, effects on surface had been done parkerized high-strength big six-angle spiral auxiliary connection, again post processing was carried out on its nut surface, and the step of processing is:
1, prepare lubricant: lubricant is the W-6 series thin film lubricant that the Beijing Research Inst. of Aeronautic Material produces, and lubricant emulsion is put into vessel in heating to 80 ℃～90 ℃ and kept this temperature, and emulsion becomes evenly and without using behind the particle;
2, surperficial post processing: in the nut dip lubrication agent with high strength bolt connection pairs, take out behind immersion 5s～10s and drain liquid, natural drying.
Finish the nut of surperficial post processing, be used in conjunction with immersion oil bolt and saponification pad, carry out the torque coefficient test, the result is as shown in table 1.
Table 1 M22 * 75 phosphatization high—strength bolt with large hexagon bea auxiliary connection torque coefficient test results
The torque coefficient of auxiliary connection and standard deviation all satisfy the requirement of GB/T 1231.
Embodiment 2
A kind of high strength bolt connection pairs surface post-processing approach, effects on surface had been done parkerized high strength torsional shear type bolt auxiliary connection, again post processing was carried out on its nut surface, and the step of processing is:
1, prepare lubricant: lubricant is the W-6 series thin film lubricant that the Beijing Research Inst. of Aeronautic Material produces, and lubricant emulsion is put into vessel in heating to 80 ℃～90 ℃ and kept this temperature, and emulsion becomes evenly and without using behind the particle;
2, surperficial post processing: in the nut dip lubrication agent with high strength bolt connection pairs, take out behind immersion 5s～10s and drain liquid, natural drying.
Finish the nut of surperficial post processing, be used in conjunction with immersion oil bolt and saponification pad, carry out fastening axial force test, the results are shown in Table 2.
Table 2 M22 * 75 phosphatization torsional high strength threaded bolt jiont fastener shaft power test results
| Temperature/℃ | Fastener shaft power value/KN | Fastener shaft power mean value/KN | Standard deviation/KN |
| 60 | 245，249，253，249，255 | 250.2 | 3.90 |
| 20 | 231，234，232，249，241 | 237.4 | 7.57 |
| 0 | 213，217，211，208，206 | 211 | 4.30 |
Fastener shaft power and standard deviation all satisfy the requirement of Japanese JSS II 09-1996.
Embodiment 3
A kind of high strength bolt connection pairs surface post-processing approach, effects on surface had been done the high-strength big six-angle spiral auxiliary connection that Dacroment is processed, and again post processing was carried out on its nut surface, and the step of processing is:
1, prepare lubricant: lubricant is the W-6 series thin film lubricant that the Beijing Research Inst. of Aeronautic Material produces, and lubricant emulsion is put into vessel in heating to 80 ℃～90 ℃ and kept this temperature, and emulsion becomes evenly and without using behind the particle;
2, surperficial post processing: in the nut dip lubrication agent with high strength bolt connection pairs, take out behind immersion 5s～10s and drain liquid, 70 ℃ of oven dry.
Finish the nut of surperficial post processing, be used in conjunction with Dacroment bolt and pad, carry out the torque coefficient test, the results are shown in Table 3.
Table 3 M36 * 230 Dacroment high—strength bolt with large hexagon bea auxiliary connection torque coefficient test results
Torque coefficient and standard deviation all satisfy the requirement of GB/T 1231.
Claims (1)
1. high strength bolt connection pairs surface post-processing approach, the high strength bolt connection pairs of doing the processing of phosphatization or Dacroment is carried out surperficial post processing, it is characterized in that: only the nut in the high strength bolt connection pairs is carried out surperficial post processing, the step of processing is:
1.1, prepare lubricant: lubricant is the W-6 series thin film lubricant that the Beijing Research Inst. of Aeronautic Material produces, and lubricant emulsion is put into vessel in heating to 80 ℃～90 ℃ and kept this temperature, and emulsion becomes evenly and without using behind the particle;
1.2, surperficial post processing: in the nut dip lubrication agent with high strength bolt connection pairs, soak to take out behind 5s～10s and drain liquid, natural drying or 60 ℃～80 ℃ lower oven dry.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103696260A CN102896078A (en) | 2012-09-28 | 2012-09-28 | Post-treatment method of surface of high-strength bolt connection pair |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103696260A CN102896078A (en) | 2012-09-28 | 2012-09-28 | Post-treatment method of surface of high-strength bolt connection pair |
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| CN102896078A true CN102896078A (en) | 2013-01-30 |
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| CN2012103696260A Pending CN102896078A (en) | 2012-09-28 | 2012-09-28 | Post-treatment method of surface of high-strength bolt connection pair |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107649342A (en) * | 2017-09-19 | 2018-02-02 | 朱义芳 | The waxing method of stainless steel ferrule-type compression joint nut |
| CN115584156A (en) * | 2022-11-01 | 2023-01-10 | 定西高强度紧固件股份有限公司 | Bolt connection pair surface anticorrosion lubricating coating material, preparation method and coating method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4931074A (en) * | 1986-06-13 | 1990-06-05 | Dacral, S.A. | Anticorrosion coating composition with improved stability, and coated substrate |
| CN201843880U (en) * | 2011-02-12 | 2011-05-25 | 上海申光高强度螺栓有限公司 | Self-lubricating high-strength bolt connection pair for wind power generation tower |
| CN102212767A (en) * | 2011-05-16 | 2011-10-12 | 宁波中京电气科技有限公司 | Surface treatment process of bolt connection pair |
-
2012
- 2012-09-28 CN CN2012103696260A patent/CN102896078A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4931074A (en) * | 1986-06-13 | 1990-06-05 | Dacral, S.A. | Anticorrosion coating composition with improved stability, and coated substrate |
| CN201843880U (en) * | 2011-02-12 | 2011-05-25 | 上海申光高强度螺栓有限公司 | Self-lubricating high-strength bolt connection pair for wind power generation tower |
| CN102212767A (en) * | 2011-05-16 | 2011-10-12 | 宁波中京电气科技有限公司 | Surface treatment process of bolt connection pair |
Non-Patent Citations (1)
| Title |
|---|
| 杨瑞等: "《高强度螺栓新型水基薄膜润滑剂应用研究》", 《铁道建筑》, no. 9, 20 September 2012 (2012-09-20), pages 141 - 143 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107649342A (en) * | 2017-09-19 | 2018-02-02 | 朱义芳 | The waxing method of stainless steel ferrule-type compression joint nut |
| CN115584156A (en) * | 2022-11-01 | 2023-01-10 | 定西高强度紧固件股份有限公司 | Bolt connection pair surface anticorrosion lubricating coating material, preparation method and coating method |
| CN115584156B (en) * | 2022-11-01 | 2023-12-22 | 定西高强度紧固件股份有限公司 | Corrosion-resistant lubricating coating material for surface of bolt connection pair, preparation method and coating method |
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Application publication date: 20130130 |