Graphite mold, EDM graphite copper male manufacturer, what is graphite electrode for automobile mold? I believe that many people do not understand graphite molds. Now Liugong's graphite expert for many years - Manager Xu, will explain to you what graphite mold is. Ladies and gentlemen, please listen to me slowly:

Graphite mold definition:

Mold is the basic process equipment widely used in industrial production, and the mold industry is the basic industry of the national economy. In modern industrial production, stamping, forging molding, die-casting molding, extrusion molding, plastic injection molding and other molding processing methods are widely used for product parts, which are matched with molding dies to form blanks into parts that meet product requirements. All kinds of tools and products we use in our daily production and life, ranging from the base of machinery and equipment, the shell of equipment and equipment, to a screw and a button, to the shell of various household appliances, are all related to molds. closely related. The shape of the mold determines the shape of these products, and the processing quality and precision of the mold also determine the quality of these products. In recent years, the mold industry has developed rapidly. Graphite materials, new processes and increasing number of mold factories are constantly impacting the mold market. Graphite has gradually become the material for mold making due to its good physical and chemical properties.

Application of graphite mold:

At present, graphite molds have been widely used in the following aspects:

1. Graphite molds for continuous casting and semi-continuous casting of non-ferrous metals:

In recent years, advanced production methods such as direct continuous (or semi-continuous) production of rods or pipes in the state of molten metal are being promoted at home and abroad. This method has begun to be used in copper, copper alloys, aluminum, aluminum alloys, etc. in China. Artificial graphite is considered to be the most suitable material for continuous or semi-continuous casting of non-ferrous metals. Production practice has proved that due to the use of graphite molds, due to its good thermal conductivity (thermal conductivity determines the solidification speed of metals or alloys), good self-lubricating properties of molds, etc., not only the casting speed is improved, but also because the ingot size is accurate and the surface is smooth, The crystal structure is uniform and can be processed directly in the next process. This not only greatly improves the yield rate and reduces the loss of waste products, but also greatly improves the product quality. There are two types of continuous casting methods: vertical continuous casting and horizontal continuous casting.

2. Die-casting mold:

Artificial graphite materials have been successfully used in pressure casting of non-ferrous metals. For example, zinc alloy and copper alloy castings produced by die-casting molds made of artificial graphite materials have been used in auto parts and so on.

3. Graphite mold for centrifugal casting:

Graphite molds have been successfully used for centrifugal casting. The United States has used artificial graphite molds with a wall thickness of more than 25 mm to centrifugally cast bronze casings. In order to prevent the artificial graphite mold from burning, certain anti-oxidation measures can be taken. After casting a certain number of castings, if the inner surface of the mold is found to be scorched, the size of the inner hole of the mold can be enlarged to cast a large casing.

4. Hot pressing mold:

Artificial graphite hot pressing molds have the following characteristics in cemented carbide pressure sintering: First, if the pressing temperature is increased to 1350-1450 degrees, the required unit pressure can be reduced to 67-100 kgf/cm2 (that is, 1/10 of Cold pressing pressure); Second, pressurization and heating are carried out in the same process, and a dense sintered body can be obtained after a short period of sintering.