Deeper understanding of graphite rods

Update:27-07-2019
Summary:

Graphite rods are commonly used in electric heating bod […]

Graphite rods are commonly used in electric heating bodies of high-temperature vacuum furnaces. The maximum operating temperature is up to 3000 ° C. It is easy to oxidize at high temperatures. In addition to vacuum, it can only be used in neutral or reducing atmospheres. It has a small thermal expansion coefficient, a large thermal conductivity, and a resistivity of (8~13)×10-6 Ω·m. The processability is better than that of SiC and MoSi2 rods. It is resistant to high temperature, extremely cold and extremely hot, and the price is good. Cheaper.

Due to the high temperature of the carbon rod, it is easy to conduct good chemical stability. Now widely used in defense, machinery, metallurgy, chemical, casting, non-ferrous alloys, lightening and other fields, especially black carbon rods, also used in ceramics, semiconductors, medicine, environmental protection, laboratory analysis and other fields, becoming the application today. The most extensive non-metallic materials. When cutting steel, it is not necessary to use flammable and explosive gas like oxygen-acetylene flame cutting, which is low in cost and safe in operation and use. The arc cutting method can be used to process a variety of metals that cannot be processed by gas cutting, such as cast iron, stainless steel, copper, aluminum, etc., with high efficiency and satisfactory results.

Graphite rods are non-metallic products. As a necessary pre-weld cutting consumable in carbon arc gouging cutting process, carbon, graphite and appropriate binder are extruded and baked at 2200 °C. It is made of a layer of copper after the section. It is resistant to high temperature, has good electrical conductivity and is not easy to be broken. It is suitable for cutting metal into a shape that meets the requirements. Due to the high temperature of the carbon rod, it is easy to conduct good chemical stability. Now widely used in defense, machinery, metallurgy, chemical, casting, non-ferrous alloys, lightening and other fields, especially black carbon rods, also used in ceramics, semiconductors, medicine, environmental protection, laboratory analysis and other fields, becoming the application today. The most extensive non-metallic materials. When cutting steel, it is not necessary to use flammable and explosive gas like oxygen-acetylene flame cutting, which is low in cost and safe in operation and use. The arc cutting method can be used to process a variety of metals that cannot be processed by gas cutting, such as cast iron, stainless steel, copper, aluminum, etc., with high efficiency and satisfactory results.