gray cast iron

The fatigue fracture process of metal mainly includes the process of fatigue crack nucleation and initiation, fatigue crack propagation and

1、 Metallographic observation Metallographic structure observation includes sampling, grinding, polishing, etching, cleaning, microscope observation and other steps. Metallographic specimen size

The fatigue performance of the material is affected by both the material itself and external factors. 90% of the fatigue

Plg-100 high-frequency fatigue testing machine is used for high-frequency tension compression fatigue test of gray cast iron. The number of

The tensile strength of gray cast iron treated with 75 ferrosilicon inoculant is 6.5% lower than that of gray cast

Firstly, the fatigue crack nucleates at the stress concentration. Under the action of stress, the fatigue crack begins to expand.

The specific test process is as follows: 1.Use WAW-Y500 universal material testing machine to measure the tensile strength of the

It is found that the fatigue properties of cast iron are not directly related to the conventional mechanical properties of

As early as the 1940s, developed countries have studied the machinability of gray cast iron. Nowadays, the cutting performance of

The machinability of gray cast iron is affected by different melting methods. From a large number of research and tests,

Gray cast iron has the characteristics of low cost, good casting performance and shock absorption, The key to the further

In order to improve the properties of gray cast iron and deeply develop the application of gray cast iron, many

Casting performance: it refers to some technological properties of whether the metal or alloy is suitable for casting, mainly including