gray cast iron

The figure shows the graphite morphology and distribution of three grades of gray cast iron samples. It can be seen

The tension compression fatigue tests of three grades of gray cast iron are carried out on plg-100 high frequency fatigue

The low-frequency tension compression fatigue test of gray cast iron adopts MTS810 axial tension compression fatigue test machine. It uses

The tension compression fatigue test of gray cast iron mainly studies the effects of loading frequency and surface roughness on

The test materials are three grades of gray cast iron, namely ordinary HT250, low alloy HT250 and HT300, in which

Because the brake drum works in the harsh environment with strong friction and complex alternation of cold and heat. Therefore,

(1) The fatigue life curve of ordinary HT250 is shown in Figure 1. (2) The fatigue life curve of low

The gray cast iron cylinder body adopts the traditional horizontal pouring process, the sand core is dipped with coating respectively

The traditional method of high strength gray iron is to reduce the eutectic degree, to increase the austenite content and

In order to adjust the sand temperature, the air temperature must be considered. Although the curing reaction of resin sand

Furan resin can be divided into urea formaldehyde furan resin, phenol urea formaldehyde furan resin, formaldehyde sugar alcohol resin and

For the role of cold iron in the anti shrinkage process of castings, the sequential solidification theory and the equilibrium

In the past, riser design basically followed the principle of sequential solidification, which needs to meet the following three conditions:

The use of riser is one of the basic means to solve the shrinkage of casting. Although there are new