POM plastic (POM) (Game steel - Trane) English name: Polyoxymethylene (Polyformaldehyde) POM (Delrin) Definition: POM was obtained by the polymerization of formaldehyde. It is a high density, high crystallinity of the thermoplastic engineering plastics. Good physical, mechanical and chemical properties, especially those with excellent abrasion performance. It is also because the excellent chemical and physical properties can be comparable to steel, and light weight of steel, was called "race of steel"! Gravity :1.41-1 .43 g / cc 
 Mold shrinkage :1.2-3 .0% 
 Molding temperature :170-200 ℃ 
 Drying conditions :80-90 ℃ 2 小时 
 Overall performance is better material properties, strength, high stiffness, good wear resistance by grinding, water is small, dimensional stability, but poor thermal stability, easy to burn easily in the atmosphere exposure aging. Suitable for production of anti-friction wear-resistant parts, transmission parts, and chemicals, instruments and other parts 
 Forming properties of 1 crystalline material, melting range is narrow, fast melting and solidification, the material temperature is slightly lower than the melting temperature of crystallization occurs. Liquid medium. Moisture absorption is small, may, without drying. (2) low coefficient of friction, elasticity, wrinkles plastic surface is easy to produce patterns of surface defects. 3 easy to the decomposition temperature of 240 degrees. Decomposition of the irritating and corrosive gases. Therefore, the mold should be selected steel corrosion-resistant materials.