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 time, the sand system will be unstable, which will eventually lead to more difficult cleaning of the casting or even scrap; In this way, it … 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 the machining technology and increase the processing efficiency, it can bring great benefits to the enterprise. Due to the hard and brittle characteristics of iron … 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 flake graphite. In hypoeutectic gray iron, graphite begins to precipitate at the edge of primary austenite. The two sides of the graphite sheet are surrounded … 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 there are many influencing factors. Everyone is involved, and every process should arouse everyone’s attention. 1. Raw materials 1. The use of raw materials with … 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 the top leader to the first line operator, all staff participate in TPM TP-04 The more people who participate in TPM, the more significant the … 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 changes in the slagging system, charging system, air supply system, thermal system, and external raw materials, the blast furnace operating furnace model will undergo changes … Read more

    Continuously improving the dimensional accuracy of investment castings and reducing waste products caused by oversize has always been one of the main goals pursued by investment casting workers at home and abroad. 1. Dimensional stability of investment castings 1. Dimensional stability of wax model and its influencing factors In most cases, the size … 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 castings has shown a trend of sustained and rapid growth. The rapid growth of automobile production has further stimulated the development of the foundry industry. … Read more