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 certain temperature, keep it for… Read more

 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 line, peaking, blistering, whitening (or… Read more

 1. Stoma     This is a small cavity formed by the gas that has not escaped during the solidification process of the metal. Its inner wall is smooth, contains… Read more

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

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

 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 water medium, alloy grain size,… Read more

   Duplex stainless steel has the same proportion of ferrite and austenite, and has excellent mechanical properties and corrosion resistance. It is widely used in petrochemical, transportation, marine engineering and… Read more

 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 steel, with good comprehensive mechanical… Read more

     In this type of enterprise, the employees are tired, and the boss is even more tired. They are all working hard for the future of the company, and… Read more

 Any corporate meeting should look like a lady’s skirt, the shorter the better. In fact, many corporate meetings are like shrouds, long and useless, and the biggest effect is a… Read more

I. Introduction      Due to changes in production conditions and the environment, other parameters of the casting will inevitably change. If the molding sand process cannot be adjusted in… Read more

Calculation Formula The calculation formula for the selection of die-casting machine: Die-casting machine clamping force (t) = 1.4 * casting projected area * ratio of the projected area of ​​the… Read more

1 The solidification characteristics of ductile iron The different solidification methods of nodular cast iron and gray cast iron are caused by the different growth methods of nodular graphite and… Read more

Three roles of team leader       The team leader in the workshop is the main communication bridge between the company and the production staff. The management of the… Read more

TP-01 Build a system to prevent all disasters, failures, defects, and waste TP-02 Eliminate all losses and wastes of equipment, so that the equipment reaches the highest efficiency TP-03 From… Read more

     The tool changes the process to a certain extent. As a tool for needles and brains, if we understand its performance and use it correctly, and then improve… Read more

     The normal blast furnace operation type is characterized by smooth inner wall surface and stable slag skin. However, in actual blast furnace production, due to the influence of… Read more

    The generation of subcutaneous pores is a comprehensive reaction of improper operation of various links and procedures in the casting process. The reasons for formation are complex, and… Read more

       In recent years, the acceleration of the globalization of the world economy has provided opportunities for the development of my country’s foundry industry, and the demand for… Read more