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Method for stabilizing friction coefficient of nut supporting surface and nut

A technology of friction coefficient and bearing surface, applied in the direction of nuts, threaded fasteners, connecting components, etc., can solve problems such as cold welding and easy wear of nut bearing surfaces

Pending Publication Date: 2021-01-19
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present invention provides a method for stabilizing the friction coefficient of the nut bearing surface and the nut, so as to solve the technical problem in the related art that the nut bearing surface is easy to wear and even cold welding occurs when the nut is tightened

Method used

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  • Method for stabilizing friction coefficient of nut supporting surface and nut
  • Method for stabilizing friction coefficient of nut supporting surface and nut
  • Method for stabilizing friction coefficient of nut supporting surface and nut

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] The embodiment of the present invention provides a method for stabilizing the friction coefficient of the nut supporting surface, which can solve the technical problem in the prior art that the nut supporting surface is easily worn or even cold welded when the nut is tightened.

[0030] see image 3 As shown, a method for stabilizing ...

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Abstract

The invention discloses a method for stabilizing the friction coefficient of the nut supporting surface and a nut, and relates to the technical field of fastener connection, the method comprises the following steps that S1, a microstructure with surface undulation is formed on the nut supporting surface; and S2, a concave area of the surface undulation of the nut supporting surface is filled witha solid lubricant. According to the method for stabilizing the friction coefficient of the nut supporting surface and the nut, the friction coefficient of the nut supporting surface can be stabilized,the abrasion of the supporting surface in the nut tightening process is reduced, and the cold welding phenomenon is avoided.

Description

technical field [0001] The invention relates to the technical field of fastener connection, in particular to a method for stabilizing the friction coefficient of a bearing surface of a nut and a nut. Background technique [0002] Nuts are commonly used fasteners. During the nut tightening process, under the action of high axial force and high torque, the friction force of the nut supporting surface increases, and the nut supporting surface is prone to wear, resulting in an increase in the friction coefficient of the nut supporting surface. Over time, the friction force is increased again, and the bearing surface of the nut is further worn, see figure 1 As shown, in severe cases, cold welding occurs between the nut bearing surface and the connected parts, see figure 2 shown. The cold welding phenomenon is extremely unfavorable to the control of the tightening process, and will also affect the reliability of the final nut and bolt connection. [0003] In the prior art, lub...

Claims

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Application Information

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IPC IPC(8): F16B37/00
CPCF16B37/00
Inventor 卢海波龚龙李林昉刘立炳刘平保颜磊
Owner DONGFENG COMML VEHICLE CO LTD
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