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Surface treatment process of bolt connection pair

A technology of surface treatment and connection pair, which is applied in the direction of bolts, connection components, hot-dip plating process, etc., to achieve the effect of precisely controlling the torque coefficient

Active Publication Date: 2011-10-12
宁波中京电气科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the deficiency that the surface treatment method of the existing bolt connection pair cannot be adapted to the application occasion requiring higher antirust ability, the present invention provides a surface treatment process of the bolt connection pair, which can be adapted to the application occasion requiring higher antirust ability, To achieve the purpose of precise control of torque coefficient

Method used

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  • Surface treatment process of bolt connection pair
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] refer to figure 1 , The bolt connection pair includes a bolt with a screw head 1 and a screw rod 2 , and a nut 3 and a washer 4 screwed on the screw rod 2 . A surface treatment process for a bolt connection pair. First, galvanizing is performed on the surface of the bolt connection pair. The galvanizing method is Dacromet galvanizing. The steps are:

[0021] A: Prepare lubricant, which is composed of molybdenum disulfide, dry film lubricant and deionized water. The mass ratio of molybdenum disulfide: dry film lubricant: deionization is 1:15:100, and the dry film lubricant For the GLEITMO lubricant produced by German Fuchs Oil Group, the particle size of molybdenum disulfide is 2000 mesh, and the dry film lubricant and molybdenum disulfide are added to deionized water and stirred evenly;

[0022] B. Put the lubricant prepared in step A in the centrifuge, immerse the galvanized bolt connection pair into the lubricant prepared in step A, and turn on the centrifuge for ce...

Embodiment 2

[0026] refer to figure 1 , The bolt connection pair includes a bolt with a screw head 1 and a screw rod 2 , and a nut 3 and a washer 4 screwed on the screw rod 2 . A surface treatment process for a bolt connection pair. First, galvanizing is performed on the surface of the bolt connection pair. The galvanizing method is hot-dip galvanizing. After galvanizing, a secondary surface treatment is performed. The secondary surface treatment The steps are:

[0027] A: Prepare lubricant, which is composed of molybdenum disulfide, dry film lubricant and deionized water. The mass ratio of molybdenum disulfide: dry film lubricant: deionization is 1:15:50, and the dry film lubricant For the GLEITMO lubricant produced by German Fuchs Oil Group, the particle size of molybdenum disulfide is 2000 mesh, and the dry film lubricant and molybdenum disulfide are added to deionized water and stirred evenly;

[0028] B. Put the lubricant prepared in step A in the centrifuge, immerse the galvanized ...

Embodiment 3

[0032] refer to figure 1 , The bolt connection pair includes a bolt with a screw head 1 and a screw rod 2 , and a nut 3 and a washer 4 screwed on the screw rod 2 . A surface treatment process for a bolt connection pair. First, galvanizing is performed on the surface of the bolt connection pair. The galvanizing method is Dacromet galvanizing. The steps are:

[0033] A: Prepare lubricant, which is composed of molybdenum disulfide, dry film lubricant and deionized water. The mass ratio of molybdenum disulfide: dry film lubricant: deionization is 1:15:60, and the dry film lubricant For the GLEITMO lubricant produced by German Fuchs Oil Group, the particle size of molybdenum disulfide is 1980 mesh, and the dry film lubricant and molybdenum disulfide are added to deionized water and stirred evenly;

[0034] B. Put the lubricant prepared in step A in the centrifuge, immerse the galvanized bolt connection pair into the lubricant prepared in step A, and turn on the centrifuge for cen...

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Abstract

The invention discloses a surface treatment process of a bolt connection pair, comprising the following steps of: galvanizing on the surface of the bolt connection pair; and then performing secondary surface treatment by the steps of: A, preparing lubricant, wherein the lubricant is composed of molybdenum disulfide, dry film lubricant and de-ionized water; and the mass ratio of the molybdenum disulfide to the dry film lubricant to the de-ionized water is 1:15:(50-100); adding the dry film lubricant and the molybdenum disulfide into the de-ionized water and uniformly stirring; B, immersing thegalvanized bolt connection pair in the lubricant prepared in the step A to perform centrifugal rotation, wherein the rotation speed is 300 rpm and the centrifugal rotation time is 30 s; and C, after the centrifugal rotation, taking out the bolt connection pair; and drying at 200-250 degrees centigrade for 30 min. The bolt connection pair can be applicable to application occasions with requirementon higher rust protection capability through the secondary surface treatment so as to achieve the purpose of precisely controlling torque coefficients.

Description

(1) Technical field [0001] The invention relates to a surface treatment process for a bolt connection pair. (2) Background technology [0002] The bolt connection pair includes a bolt with a screw head and a screw rod, and a nut and a washer screwed on the screw rod. [0003] In the national standard "GB / T 1228~1231-2006 large hexagon head high-strength bolt connection pair for steel structure" and "GB / T 3632-2008 torsional shear type high-strength bolt connection pair for steel structure", two kinds of High-strength bolted joints for steel structures. [0004] Since high-strength bolt connections are mainly used in railways, bridges, boiler steel structures, industrial plants, high-rise civil buildings, mast structures, hoisting machinery and other facilities that require high safety, high-strength bolts are widely used in related industries. In the construction standards, the accuracy of the fastening axial force of the bolted connection is required to be high. [0005]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06C23C2/26F16B33/06
Inventor 倪晓军谢思杰宗渝安
Owner 宁波中京电气科技有限公司
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