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Lzqt600-3 ductile iron profile with horizontal continuous casting was selected as the research object. The as cast microstructure and properties

The morphology and properties of Nitrocarburized layer of lzqt600-3 ductile iron profile at different positions were studied. The microstructure of

The range and variance analysis of orthogonal experiment were used to analyze the experimental results. Through the comprehensive balance method,

(1) Surface hardness test In order to make the depth of indentation less than the thickness of the layer and

The sample is taken from the edge, 1 / 2R and center of lzqt600-3 ductile iron profile. It is first

From the development and research trend of chemical heat treatment in atmosphere in recent years, it is still a hot

When the piston pump works under high hydraulic pressure, abrasive wear and adhesive wear are the main failure causes of

Nowadays, friction, lubrication and wear are the three most important research topics in tribology. Friction will cause wear, resulting in

The diffusion coefficient of nitrogen atom in α – Fe is larger than that of carbon atom. The main mechanism

Soft nitriding, also known as nitrocarburizing, is a process of infiltrating nitrogen into the surface of workpieces and also carbon

Carbon and nitrogen elements are infiltrated into the workpiece surface at the same time. The process is called carbonitriding. The

In the presence of active nitrogen atoms in the gas, liquid or solid as the medium, under a certain temperature

Carbon atoms are infiltrated into the surface of steel samples, and carburizing layer is formed on the surface of steel