The heating pipes normally cast or punched into the cast aluminium heating plate are made of metal, mainly of iron, stainless steel and imported materials. 1. Yes, 2. Metal heating pipes, stainless steel heating pipes and iron heating pipes are needed for casting or punching in the cast aluminum heating plate, and the surface is not electrified. 3. If the surface of the electric heating wire board is charged. 4. Cast aluminium heating plate is normally used below 380 C. For a long time, 400 or even higher temperature, the aluminium plate will deform or even melt. 5. The surface temperature of 304 stainless steel heating tube is about 450 degrees. The surface temperature uniformity and tube arrangement of cast aluminium heating plate can be fully used. The surface uniformity of heating plate and the process heating uniformity of heating tube are related.

Adequate surface hardness and wear resistance: The hardness of plastic mold is usually below 50-60 HRC. The heat treated mold should have sufficient surface hardness. The price of cast aluminium heating plate ensures that the mold has sufficient rigidity. Because the filling and flowing of plastics must bear large compressive stress and frictional force in the work of the die, it is required to keep the shape accuracy and dimensional accuracy of the die stable, and ensure that the die has sufficient service life. The wear resistance of the die depends on the chemical composition of the steel and the hardness of heat treatment, so improving the hardness of the die is beneficial to improving its wear resistance.