What kind of material is the mold frame usually made of?

In the mold industry, the choice of materials is very important, on the one hand to meet the production requirements, but also to take into account the production cost, so "choose what material is better" is a very important decision for each mold factory. So as an important part of the mold frame is made of what material? What material is the mold usually made of? The following Hua Ruixun mold editor collates the experience of relevant industry people.

According to a mold product technology in the industry, the steel used for making mold frames (molds) on the market is generally 45# or 50#(S50C), and these two are the most common (LKM uses 50# steel).

LKM mold frame is generally made of carbon structural steel, and there are two commonly used S50C (rolled sheet) annealed supply (about HB170-220) and S55C (forgings) annealed supply (about HB170-220). Its characteristics: good machining and cutting characteristics. The LKM die frame has a preforming device, a positioning device and an ejector device. It is generally configured as A panel, A board (front template), B board (back template), C board (square iron), bottom plate, thimble panel, thimble bottom plate, and spare parts such as guide search column and return pin.

According to a mold factory product introduction, inserts are generally internal materials, that is, the main material steel material is the worst P20H, the best is 718H, etc., the line is generally 45# for nitriding adjustment in the later period, and the inclined top steel is generally nitriding adjustment before the P20 mold is shipped to harden it to prevent the inclined top product from becoming hot and biting the mold.

There is a question that if the plastic mold line position, insert, inclined top, mold frame are all using NAK80 materials, is this OK? A material expert pointed out that the main material you use NAK80, like the inclined top, insert, slide, mold frame and so on with 45# steel material, mold frame can not use so good materials.