Microhardness optimization of nodular cast iron plunger pump block
The microhardness of lzqt600-3 ductile iron profile was tested under the optimal scheme of nitrocarburizing state in three parts. The […]
The microhardness of lzqt600-3 ductile iron profile was tested under the optimal scheme of nitrocarburizing state in three parts. The […]
The steel ball used in ball mill can be divided into casting ball and forging ball. Generally, the diameter of
Lzqt600-3 ductile iron profile with horizontal continuous casting was selected as the research object. The as cast microstructure and properties
As cast and qsa313 The curve of the two samples first rises and then decreases, and fluctuates greatly. This is
The morphology and properties of Nitrocarburized layer of lzqt600-3 ductile iron profile at different positions were studied. The microstructure of
The significance of the comprehensive score data of friction and wear at the edge, 1 / 2R and center was
The range and variance analysis of orthogonal experiment were used to analyze the experimental results. Through the comprehensive balance method,
The friction and wear properties of lzqt600-3 ductile iron profile at different positions were tested. Among them, the comprehensive score
(1) Surface hardness test In order to make the depth of indentation less than the thickness of the layer and
The effective hardening depth of three parts of lzqt600-3 ductile iron profile was measured. According to the measured data, the
The sample is taken from the edge, 1 / 2R and center of lzqt600-3 ductile iron profile. It is first
The microhardness of different sections of the nitrocarburized lzqt600-3 ductile iron profile was tested. The effective hardened layer depth of
From the development and research trend of chemical heat treatment in atmosphere in recent years, it is still a hot
The evaluation index of the data is the visual analysis chart of the influence of various factors on the surface
When the piston pump works under high hydraulic pressure, abrasive wear and adhesive wear are the main failure causes of
Based on the ternary phase diagram of Fe-C-N system, the surface chemical heat treatment of nitrocarburizing is carried out. The
Nowadays, friction, lubrication and wear are the three most important research topics in tribology. Friction will cause wear, resulting in
The evaluation index of the data is the visual analysis chart of the influence of various factors on the thickness
The diffusion coefficient of nitrogen atom in α – Fe is larger than that of carbon atom. The main mechanism
The thickness of nitrided layer in three parts of lzqt600-3 ductile iron profile was measured. It can be seen from
Soft nitriding, also known as nitrocarburizing, is a process of infiltrating nitrogen into the surface of workpieces and also carbon
The picture shows the XRD spectrum of the surface of the sample at the edge after being treated at 540
Carbon and nitrogen elements are infiltrated into the workpiece surface at the same time. The process is called carbonitriding. The
The picture shows the SEM morphology of the cross section of the nitrocarburized sample at the edge of lzqt600-3 ductile
The as cast microstructure and properties of lzqt600-3 ductile iron profile were studied. Firstly, according to GB / T 9441-2009
In the presence of active nitrogen atoms in the gas, liquid or solid as the medium, under a certain temperature
The figure shows the potentiodynamic polarization curves of three parts of lzqt600-3 ductile iron profile in 3.5% NaCl solution. The
Carbon atoms are infiltrated into the surface of steel samples, and carburizing layer is formed on the surface of steel
Figure 1 shows the equivalent circuit diagram of three parts of lzqt600-3 ductile iron profile in 3.5% NaCl solution. R1
In the hydraulic system, the most important function similar to the “heart” is the high-pressure plunger pump, which is also