In the process of measurement, if the temperature of the reference end changes, even the temperature range is large, the […]
The upper limit of temperature measurement is as high as 1350 ° C. in the process of temperature measurement, the
The principle of thermocouple temperature measurement is thermoelectric effect. In the thermocouple loop, the high temperature end is called the
In order to verify the accuracy of the simulation results and prove that the simulation software can be used to
The matrix of qt400-18 is mainly ferrite. The chemical composition of qt400-18 is not specified in GB 1348-2013 ductile iron
1) The self-developed 16 channel temperature measuring device was used to successfully collect the temperature curves of 45 ° fan-shaped
According to the simulation results and the experimental study of 45 ° test block, the ductile iron spent fuel container
The relationship between the number of graphite balls and the properties of 45 ° sector block is shown in Figure
Metallographic examination shall be carried out in accordance with GB / t9411. The graphite morphology and matrix structure at different
The central section of the 45 ° fan-shaped test block (as shown in Fig. 4-15) is selected for the sampling
The temperature measurement curves of different positions of 45 ° sector test block are shown in Fig. 1. The cooling
The temperature curves of chill and metal mold are shown in Fig. 1 and Fig. 2 respectively. In about 18
Using high-purity pig iron as the main raw material, the high-temperature pure and high-quality molten iron meeting the composition requirements
The microhardness of lzqt600-3 ductile iron profile was tested under the optimal scheme of nitrocarburizing state in three parts. The
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
