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Method for reducing wear by metal surface micro-texture auxiliary friction induction film formation

A technology of friction induction and metal surface, which is applied in the field of metal surface engineering, can solve the problems such as the influence of metal material anti-wear performance, and achieve the effect of low cost, easy realization, and uniformity around the pit

Active Publication Date: 2018-12-28
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, factors such as micro-texture morphology, size, distribution, lubrication conditions, and friction technology all have unpredictable effects on the friction reaction film, thereby affecting the anti-wear performance of metal materials, and the relevant content has not been reported so far.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) An elliptical micro-texture is formed on the iron-based metal surface by the above-mentioned etching method, wherein the short axis of the ellipse is 600 μm, the long axis is 1000 μm, the depth of micro-texture pits is 10 μm, and the center point spacing of the ellipse is 3 mm.

[0020] 2) The elliptical micro-textured metal is completely immersed in the No. 32 mechanical lubricating oil containing 0.3wt% sulfur element lubricating additive for 40 minutes, wherein the viscosity of the lubricating oil is 32 cSt at 40°C.

[0021] 3) The control friction process conditions are: the pin-disc surface contact reciprocating friction method is adopted, in which the pin is a cylinder, the material is 316L steel, the cylinder diameter is 8mm, the load is 150N, the friction speed is 100mm / s, and the friction interface is completely covered. Covered with lubricating oil, keeping the oil-rich lubrication state, friction time 60min.

[0022] After the rubbed sample was ultrasonically cle...

Embodiment 2

[0024] 1) An elliptical micro-texture is formed on the iron-based metal surface by the above-mentioned etching method, wherein the short axis of the ellipse is 400 μm, the long axis is 1200 μm, the depth of the micro-textured pits is 20 μm, and the center point spacing of the ellipse is 3.6 mm.

[0025] 2) The elliptical micro-textured metal is completely immersed in the PAO lubricating oil containing 0.2wt% sulfur element lubricating additive for 60 minutes, wherein the viscosity of the PAO lubricating oil at 40°C is 30.5 cSt.

[0026] 3) The control friction process conditions are: pin-disc surface contact reciprocating friction method, where the pin is a cylinder, the material is SAE1045 steel, the cylinder diameter is 5mm, the load is 200N, the friction speed is 50mm / s, and the friction interface is completely Covered with lubricating oil, keeping the oil-rich lubrication state, friction time 30min.

[0027] After the rubbed sample was ultrasonically cleaned to remove the adsorbe...

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PUM

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Abstract

The invention discloses a method for reducing wear by metal surface micro-texture auxiliary friction induction film formation. The method mainly comprises the steps of metal surface micro-texture, lubrication condition control, friction process control and the like. According to the method for reducing wear by the metal surface micro-texture auxiliary friction induction film formation, three aspects of a micro-texture state, a lubrication condition and a friction process are organically combined, so that a friction reaction film can be rapidly formed on the metal surface through the micro-texture auxiliary friction induction, and a good anti-wear effect is achieved. The preparation process of the method for reducing wear by the metal surface micro-texture auxiliary friction induction filmformation is simple and controllable, is easy to realize, and has wide application prospect in the fields of improving wear resistance of various metal friction and the like.

Description

1. Technical Field [0001] The invention relates to the field of metal surface engineering, in particular to a method for metal surface microtexture to assist friction-induced film formation and reduce wear. 2. Background technology [0002] Due to its high mechanical strength, good dimensional stability, good heat resistance, low temperature change properties, easy maintenance and many other advantages, metal materials have been widely used in key parts of various mechanical equipment and other fields. At present, the friction components of many major equipment are made of metal materials. Studies have shown that the wear of metal materials directly affects the overall operational safety and service life of major equipment. Therefore, how to improve the wear resistance of these friction pair metals is of great significance to prolong the service life of these equipment. [0003] There are many ways to improve the wear resistance of metals to reduce wear, mainly including surface h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B1/00C23F1/02C23F1/28
CPCB24B1/00C23F1/02C23F1/28
Inventor 徐玉福胡苑华马志亮尤涛田明胡献国
Owner HEFEI UNIV OF TECH
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