Ceramic piston rod and ceramic coating spraying process

Abstract

The invention discloses a ceramic piston rod, which is formed by spraying a ceramic coating on the surface of a piston rod body, wherein signal grooves with equal thread intervals are machined in thesurface of the piston rod body below the ceramic coating to form a detection section, a 45-degree chamfer is expanded outside the opening of the signal groove, the width of the chamfer is 1 / 6 of the width of the groove opening, the ceramic coating sprayed in the signal groove is flush with the surface of the ceramic coating outside the groove to form an integral whole, the ceramic coating is provided with a bottom layer and a surface layer, the bottom layer is made of nickel carbide, the thickness of the bottom layer is greater than 150 micrometers, the surface layer is made of Cr2O3-TiO2, andthe thickness of the surface layer is greater than 200 micrometers. According to the ceramic piston rod provided by the invention, the comprehensive performance of the ceramic piston rod is improvedby optimizing the surface ceramic coating and the spraying process of the ceramic piston rod.

Description

technical field [0001] The invention relates to a piston rod, in particular to a ceramic piston rod and a ceramic coating spraying process thereof. Background technique [0002] The piston rod of the hoist has served in a humid environment for a long time. The piston rod in the hoist not only bears the abrasion of sand particles and other sundries adsorbed on the surface of the piston rod, but also bears the corrosion of the humid environment and various polluted environments. Serious It will affect the performance of the piston rod and shorten its service life, seriously affecting the reliability and stability of the piston rod operation. The safety, reliability and stability of piston rod operation are very important, which seriously affects people's property and life safety. Traditionally, in order to prolong the service life of the piston rod, the design focuses on the rigidity, strength, heat treatment, chrome plating and fatigue resistance of the part structure, and t...

AI Technical Summary

Problems solved by technology

Traditionally, in order to prolong the service life of the piston rod, the design focuses on the rigidity, strength, heat treatment, chrome plating and fatigue resistance of the part structure, and the principle of piston rod material selection attaches great importance to the selection of the overall material of the part, and less attention is paid to the material of the base material. The selection and the selection of the surface material are considered as a whole. Therefore, there are still many shortcomings in the comprehensive performance of the existing piston rods such as hardness, wear resistance, friction coefficient, and service life.

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