Bs En124 Heavy&Light Duty Trench Cover

SMC Brief introduction (Raw material)
SMC is the abbreviation of sheet Molding Compound and it is often called unsaturated polyester dough molding compound in China. It is dough soaked materials made up of mixed short glass fibers unsaturated resin, fillings and various additives. SMC materials was first applied in Federal Germany and UK in 1960-s, and then was greatly developed in U. S. A in 1970-s and in Japan in 1980-s respectively. Because it is endowed with favorable electrical property, mechanical performance, good high-temperature proof and chemical anti-erosion as well as being anti-erosion, it is adoptable for various processes, that is to say, it can meet performance requirements for different products, and it is widely used in all areas.

SMC SERIES MOLDING COMPOUND PROCESS:
Die Molding temperature: 150C
Duration: 60-70s/mm
Pressure: 10-20Mpa
Practical process should be measured according to the products and mold structure, if the products are thick, the temperature should be lower. Most molding temperatures are 135C-145C. Higher molding pressure is required for complicated products.