Colloidal Anhydrous Silica

Precision casting sand is a sand mold material specifically designed for high-precision casting. It is usually made of special materials such as quartz sand and resin, which have high strength and fire resistance after processing and treatment, and can be made into very complex sand molds. Characteristics of precision casting sand 1. High precision: Precision casting sand has high detail accuracy and surface smoothness, and is widely used in high-precision casting. 2. Good thermal stability: Precision casting sand has good thermal stability at high temperatures, is not easily deformed, and...

What is casting sand? What can casting sand be used for? How is casting sand processed? How much do you know about foundry sand? When Xiaokuang heard about casting sand, he was actually surprised. In his limited knowledge system, he felt that this type of sand was not common or commonly used. However, the small mines are still narrow, and casting sand was originally a commonly used molding material for configuring molding sand and core sand. Today, Xiaokuang will focus on popularizing some knowledge about casting sand for everyone. 1. What is casting sand? What is the use of casting sand?...

In the 17th century AD, China used silica sand as a molding material for making castings such as clocks, mirrors, pots, and artillery. However, the early use was mostly natural silica sand containing clay, namely mountain sand and river sand, which had good plasticity and could be directly used for manufacturing molds and cores, suitable for the conditions of manual production at that time. After the large-scale industrial production of castings, especially after the mechanization of molding, the uniformity of the properties of natural silica sand containing clay was poor, and the quality of...