Abstract
The causes of hydrogen wear of the friction surfaces involved in hydrocarbon transfer and distillation processes are considered. Some technological methods for reducing the hydrogen wear of parts and friction units operating in hydrocarbon environment are given. A comprehensive technology for obtaining the properties of the surface layer is proposed, which provides an increase in the wear resistance of a friction pair and smoothing the surface roughness. The increase in wear resistance is based on several mechanisms: (1) decreasing biographical hydrogen due to the dehydration process; (2) smoothing surface irregularities by saturating the surface with silicon; (3) reducing the diffusion capacity of the steel surface caused by diffusion siliconizing; (4) reducing grain size of the material. Comparative wear tests were carried out, which showed the effectiveness of the proposed methods.
Highlights
Hydrogen has the smallest size of an atom among all the chemical elements
In the process of transporting hydrocarbon raw material there is an intense wear of the friction surfaces which are in contact with the hydrocarbon environment
Pumping and compressor installations are subject to hydrogen wear due to diffusing atomic hydrogen released from the environment into the surface layers of the material
Summary
Hydrogen has the smallest size of an atom among all the chemical elements. In the process of transporting hydrocarbon raw material (oil, gas and others) there is an intense wear of the friction surfaces which are in contact with the hydrocarbon environment. In [9], a comprehensive treatment of friction surfaces of steel parts was proposed, which increases the wear resistance of critical friction sites subjected to hydrogen wear, including: heat treatment to reduce grain sizes; dehydration to reduce the concentration of biographical hydrogen in the sample, ion implantation with silicon to reduce the diffusion of hydrogen from the lubricant or hydrogen-containing environment. The properties and microgeometry of the surface layer, the metallographic structure and the effect on the wear resistance of steel samples 40x13, strengthened by a complex of these methods, are studied
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