The work hardening ability of high manganese steel depends on the size of stress. The yield strength of high manganese steel is low, it is easy to deform in use, and its wear resistance can not play a full role. In order to overcome these shortcomings, further adding alloy...
The results of three body impact abrasive wear test are shown in Figure 1. It can be seen that the wear weight loss of bainite Martian multiphase wear-resistant cast steel and mnl3cr2 changes linearly with time, the wear weight loss of bainite Martian multiphase wear-resistant cast steel decreases with...
In the wear test of iron and steel materials, the wear resistance can be obtained by taking the reciprocal of the wear amount, that is: Where, ε Is the wear resistance of the material (g-1), and F is the wear amount of the material within the specified time (g)....
Austenitic Medium Manganese Steel is a new wear-resistant material obtained by reducing the content of manganese and adding a certain content of chromium on the basis of Mnl3, so as to reduce the stability of austenite. Its approximate composition is 8.0% – 9.5% Mn; １．０％-１．２％Ｃ； ２．０％-２．５％Ｃｒ；＜ ０．８％Ｓｉ。 The metallographic...
(1) Pin disc wear test The purpose of pin disc wear test is to evaluate the comparison of wear resistance between bainite Martian multiphase wear-resistant cast steel and mnl3cr2 when two-body wear is the main wear form. It is carried out on MM-W1A universal wear testing machine. The working...
Lost foam casting is a green casting method with the characteristics of cleaner production. The white mold pattern with the same proportion as the casting is foamed and coated with fire-resistant coating is used for compact molding. Under the condition of negative pressure, the liquid metal is directly poured...
Observe the above samples tempered at different temperatures with optical metallographic microscope. Start at 250 ° C and take every 50 ° C as the step. The metallographic structure of air-cooled samples is shown in Figure 1. It can be seen from Fig. 1a-e that when the tempering temperature...
Manganese steel, as a large category of wear-resistant steel, mainly includes ordinary high manganese steel and modified high manganese steel. Modified high manganese steel includes modified medium manganese steel and ultra-high manganese steel. There are three ways to improve the application range of manganese steel. One is the re...
In the quenched low-alloy high-strength wear-resistant steel, the strain energy and interface energy of quenched martensite are in a very high state, carbon is highly supersaturated in quenched martensite, in addition, the quenched residual internal stress in the structure is also very high, so martensite is usually in an...
There are still some deficiencies in the research: the composite mold design scheme proposed for the casting is based on the design of annular lap edge gating system. When facing the top injection gating system or changing the structure of the casting, the composite mold design scheme will also...