We always use a variety of products in our lives, and these products are actually molded by a certain mold. Moreover, different products have different molds. These molds are very convenient when used, and have formed a batch of industrial production. The cold extrusion die is such a die, which uses a certain cold pressing technology to make the die and send it to the market for sale.
The extrusion molding of the cold extrusion die is completed under a strong three-way compressive stress state. The punch is not only subjected to strong compressive stress, but also subjected to various unbalanced lateral forces, and the force is complex, especially in The stress is concentrated at the place where the size of the punch changes, which is easy to produce brittle fracture, while the die may burst and crack and the mold cavity is severely worn due to the violent metal flow. The structure size, process, mold processing, and lubrication of the cold extrusion die have a great impact on the life of the die, but first, we must pay attention to material selection and heat treatment process.