A kind of multi-layer structure tinicrnb-based self-lubricating pin material and preparation method thereof

Abstract

The invention relates to a multilayer structure TiNiCrNb-based self-lubricating pin shaft material design and a preparation method thereof. The self-lubricating pin shaft is based on TiNiCrNb, and the multi-component composite regulator is composed of friction reducer, antiwear agent and antiwear agent. First of all, it is prepared for multi-layer plate crystals, and then after the design and calculation of each layer of materials, vibration mixing, hot pressing molding, sample processing and hot pressing sintering, a multi-layer structure TiNiCrNb-based self-lubricating pin is obtained; due to multi-layer composite control The proportion of the agent in each layer is different, which can effectively exert the wear-reducing and wear-resistant properties of the soft metal PbSnCuInPt and the plate crystal, so that the multi-layer structure TiNiCrNb-based self-lubricating pin material can meet the high wear resistance of the connecting pin under special working conditions It can meet the requirements of high performance, improve the bearing capacity of the pin shaft, reduce the friction coefficient and wear rate of the material during the torsion process, and achieve a lubricating effect far exceeding that of oil and grease in actual working conditions.

Description

technical field [0001] The invention belongs to the technical field of design and preparation of anti-friction and wear-resistant materials such as pin shafts and shaft sleeves, relates to a pin shaft multilayer composite material with TiNiCrNb as a matrix and a preparation method thereof, and belongs to the technical field of fasteners. Background technique [0002] The mechanical system is often accompanied by friction and wear of materials during the transmission process. At present, the pin shaft is mainly used for hinge connection, cotter pin locking and hook transmission. The patent applicant Ningbo Chujin Co., Ltd., a pin shaft device, CN201820424433.3, and the patent applicant Yuhuan Zhongya Petroleum Machinery Co., Ltd., a pin shaft device Shaft device, CN201821224277.2. However, at present, the pin shafts used for equipment are prone to problems such as poor lubrication during the maintenance process, resulting in difficulty in removal, or even failure. In order ...

AI Technical Summary

Problems solved by technology

However, in the actual rotation process such as vibration and shock, especially the service conditions such as high temperature, high speed and heavy load, the lubricating grease is easy to wear, which makes the friction coefficient increase sharply and generates a lot of friction heat, resulting in pitting on the friction contact surface , Bonding and lubrication failure and other issues

This not only affects the normal disassembly and assembly of mechanical parts, but also affects the accuracy and normal operation of mechanical parts.

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