Principle of High Pressure Casting Mold

High pressure casting mold principle, welcome to exchange. Abstract: This paper mainly introduces the process of high-pressure casting, the structure and characteristics of die-casting mold and the working process of die-casting mold, and analyzes the factors that affect the life of die-casting mold. This paper mainly introduces the low pressure casting and high pressure (high temperature) precision casting molding technology. In metal pressure processing, due to the constraints and limitations of various factors, it is still dominated by low pressure (room temperature or low temperature) precision casting molding technology. However, with the development of science and technology and the needs of social progress and the continuous expansion of market demand, the quality of metal products is becoming more and more demanding; at the same time, with the rapid development of China's industrial technology and the increasing of the national economy, the demand for metal materials is increasing; therefore, it is necessary to develop a new high-temperature (high-temperature or ultra-high-temperature) precision casting molding technology with superior performance to meet the needs of social needs.

1. Introduction Metal pressure processing refers to the process of transforming solid liquid metal into plastic liquid metal called "hot forging". It includes forging, extrusion and other process methods. When hot forging, the temperature is generally higher than 1000~2000°C or even higher; while the temperature of cold forging is generally lower, only about 700°C or even lower; so the material organization obtained by hot and cold forging is different. The mechanical properties are also different.

2. Overview In actual production, in order to obtain workpieces with high dimensional accuracy and good surface finish, molds must be used. Different types of molds can be used according to different requirements. For example, ordinary plastic molds are used to produce small products or parts produced in small batches. The template used by large multi-station punching and concave plate machines belongs to special profile plastic molds.

3. the "three" principle:

1. Reasonable selection of raw materials According to the structural characteristics and technical conditions of the product, the selection of appropriate raw and auxiliary materials and reasonable heat treatment specifications is one of the keys to ensure product quality.

2. Reasonable design and manufacture of molding equipment Reasonable design and manufacture of molding equipment and processes is one of the important prerequisites for achieving high-quality molding.

3. Correct operation and control of the cooling system. To make the heated blank evenly heated and reach the required cooling speed, it is necessary to strictly follow the prescribed operating procedures for production and control the working status of the cooling system to ensure the quality and qualification rate of the product.

4. "three elements":

(1) Selection of raw materials;

2. Reasonable structural design;

3. Good manufacturing quality.

5. "four characteristics":

1. Good thermal conductivity;

2. Excellent corrosion resistance;

(3) higher strength;

4) Lower costs.

6. "five precautions, one protection and one attention", "four precautions" (I .e. preventing pores, bubbles and air lines), "two breaks" (I .e. cutting off internal stress and external stress), "two alignment" (I .e. accurate positioning and accurate guidance), and "one point", I .e. preventing deformation and cracking.