Definition and Performance of Expanded Graphite
In recent years, the rapid development of mold industry, expanding graphite materials, new technology and increasing mold factory continue to impact the mold market, expanded graphite with its good physical and chemical properties gradually become the preferred material for mold making.
Expanded Graphite definition:
Mold is widely used in industrial production of basic technology and equipment, mold industry is the basic industry of the national economy. In modern industrial production, the product parts are widely used stamping, forging forming, die casting, extrusion, plastic injection or other forming processing methods, and forming mold matching, so that the blank forming into products meet the requirements of the parts. Our daily production, life used in a variety of tools and products, large to the machine base, body shell, as small as a minutia screw, buttons and a variety of household appliances shell, all with the mold has a close relationship. The shape of the mold determines the shape of these products, mold processing quality and accuracy will determine the quality of these products. In recent years, the rapid development of mold industry, expanding graphite materials, new technology and increasing mold factory continue to impact the mold market, expanded graphite with its good physical and chemical properties gradually become the preferred material for mold making.
Expanded Graphite excellent performance:
1, excellent thermal conductivity and conductivity
2, low linear expansion coefficient and other good thermal stability and resistance to thermal shock
3, chemical resistance and most of the metal is not easy to react
4, at high temperature (in most copper-based carcass sintering temperature above 800 ℃) strength increases with increasing temperature
5, with good lubrication and abrasion resistance
6, easy processing, mechanical processing performance, can be made into a complex shape, high precision mold.
Recently, there has been a new type of glass making technology used in the electronic screen industry, such as: TV screen, mobile phone screen, tablet screen, monitor screen, notebook screen, and why use the expansion of graphite material to do Such as the mold material, the following I will come to you to analyze this factor, if we use steel to do the mold, and the time of bending glass, you need to soften the glass with high temperature, and glass softening point of 600 degrees, but Just softening is not enough, we need it to melt flow, so you need a higher temperature, when the temperature reaches 1500-2000 or so, and the glass can be free circulation. But the melting point of steel is 1535 degrees, so that the glass melted at the same time, the same steel mold melting, so that will not work.