As cast microstructure of nodular cast iron plunger pump cylinder
The sample is taken from the edge, 1 / 2R and center of lzqt600-3 ductile iron profile. It is first […]
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
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
As a hydraulic component, plunger pump has the characteristics of precision, high cost and sensitivity to oil level pollution. When
The figure shows the friction coefficient of different parts of lzqt600-3 ductile iron profile. The friction coefficients of the edge,
Figure 1 shows SEM morphology of pearlite in different parts of lzqt600-3 ductile iron profile. The pearlite clusters in the
The figure shows the matrix structure of lzqt600-3 ductile iron profile at different parts. In figure (a), the microstructure is
The diameter distribution of graphite balls in three parts of lzqt600-3 ductile iron profile was analyzed by Excel and Image
The shape factors of graphite balls in three parts of lzqt600-3 ductile iron profile were analyzed by Excel and Image
The figure shows the statistical results of the number of graphite balls in three parts of lzqt600-3 ductile iron profile.
The corrtest electrochemical test system can automatically carry out the electrochemical corrosion test and fit the test curve. Before the
The friction and wear tests of nitrocarburizing samples were carried out on a friction and wear testing machine. The friction
According to the statistics of pearlite content in the structure of nodular cast iron under corrosion state, the gray data
Spheroidization rate is one of the important and often used evaluation criteria of ductile iron. The calculation method is as
Based on the national standard GB / T 9441-2009 metallographic examination of nodular cast iron, the following four parameters are