Heat treatment of nickel hard castings

- Oct 20, 2019-

Since the martensite structure is to be obtained in the as-cast state, it is preferable to produce a nickel-hard cast iron piece by metal casting. Because in the metal type, the cooling speed of the casting is fast, the pearlite transformation of austenite can be effectively inhibited, and the graphitization can be avoided, and the purpose of the white cast iron is ensured. Due to the rapid cooling rate, the primary crystal structure is fine and the mechanical properties are much higher than that. Sand castings. For simple shapes, especially thick-walled nickel hard cast iron parts, such as rolls, roll heads, grinding balls of wet ball mills, linings, etc., metal casting should be used whenever possible.https://www.wuxiorient.com/