Year: 2021

It is necessary for a professional foundry person to know this scrap knowledge!  Scrap steel is a general term for ferrous metal scrap in scrap...

 1. Stoma     This is a small cavity formed by the gas that has not escaped during the solidification process of the metal. Its...

One table to understand the heat treatment of steel products: Name Heat treatment process Purpose of heat treatment 1. Annealing Heat the steel to a...

 1. Appearance, size and fit of the molded product 1. Defects on the product surface are not allowed: lack of material, burnt, top white, white...

    Carburizing and quenching is actually a composite process, namely carburizing + quenching. We are often used to talk about the two together, because...

 1. Graphitization process of cast iron     The formation process of graphite in cast iron is called graphitization process. The basic process of the...

 The 690 alloy tube used for the steam generator heat transfer tube of nuclear power plant bears the corrosion of high temperature, high pressure and...

   Duplex stainless steel has the same proportion of ferrite and austenite, and has excellent mechanical properties and corrosion resistance. It is widely used in...

 1. 45-high-quality carbon structural steel, the most commonly used medium-carbon quenched and tempered steel Main features: The most commonly used medium carbon quenched and tempered...