Time：2023.05.17Browse：1
The casting industry in the mechanical industry uses graphite materials as molds such as pressure casting, centrifugal casting, and hot squeeze of super hard alloy. It can use graphite molds as large as train wheels and small as small as precision parts. Graphite molds can be repeatedly used for multiple times. After the molding, the casting has a high degree of smoothness, and some can be used without further processing. The graphite material used for casting molds should be graphite with a dense texture, low thermal expansion coefficient, and good antioxidant performance. Graphite, which is used for casting with large casting size, can be composed of thicker particle size. It is used for casting small precision parts The graphite must be graphite with fine particles. The number of graphite used to make molds in China is large. In 2005, it was continuously cast about 1500T with graphite and sintering molds were estimated to cost 4000T. Table 4 is the specifications and technical performance of fine particles produced by Jiman Group Shanghai Carbon Factory.
In the mold graphite, the quality requirements of continuously casting graphite with metal graphite are the strictest. It is required to have high thermal conductivity, good thermal stability and heat resistance, good lubrication, not infiltrate with melting metal Become accurate mold. The characteristics of continuous casting graphite are generally as follows: volume density of 1.7-1.9g/cm, anti-folding strength 30-40MPa, tensile strength 20-30MPa, and thermal guidance rate of 100 <130 w/(m · k).
The vertical corner plate is 1260 mm x 200 mm x 280 mm; the horizontal plate is 1000 mm x 70 mm x 240 mm; the casting speed varies according to the size of the casting plate, and the range range is 0.7 ~ 4 m/min. Cold mold pressing fine particles structure graphite or fine particle structure graphite with static pressure can be processed into metal continuous casting graphite pieces
2023-12-12Raw material cost: The price of graphite molds is influenced by the cost of raw materials. The main raw material for graphite molds is graphite material, and its price fluctuations will directly affect the price of graphite molds. The rise or fall in raw material prices can lead to fluctuations in graphite mold prices.
The concrete flip kiln is the insulation machinery and equipment that conducts actual operation under negative pressure. The sealing situation on both sides is immediately associated to the production of cement clinkers, quality and energy consumption. In the work of improving and improving kiln heads and kiln tails, it is one of the effective ways to flip the high -yield and energy -saving of the kiln chemical plant. However, because the working conditions on both sides of the flip kiln are extremely high, not only the temperature is high, but also has flipping and shaking together. Therefore, the sealing work of the flip kiln chemical plant is both the key and difficult. Graphite block has the inevitable heat resistance characteristics and excellent authenticity characteristics, which can achieve a good regulation of flip kiln sealing. Therefore, in China, the graphite block has been used as a sealed material in the early 1950s. At this stage, the current stage. The use of use is st2023-03-07Graphite products manufacturers introduce the use of graphite block on cement back kiln in detail
2023-12-12There are weak van der Waals forces between layers in the structure of graphite, and these interactions are disrupted under high temperature conditions, leading to interlayer detachment of graphite.
Raw material quality: The main raw material for graphite crucibles is natural graphite, and its quality is closely related to the service life of graphite crucibles. High quality natural graphite has the characteristics of high density, high purity, and high strength, which can extend the service life of graphite crucibles.
The flotation method is a type of energy consumption and reagent consumption and low cost in the conventional purification method of minerals. This is the advantage of the floating method purification method. For scales -shaped graphite, multi -segment mills cannot be completely unbuttoned, but they are not conducive to protecting large scales of graphite. Therefore, the use of flotal methods to further improve the graphite taste. High carbon graphite containing more than 99%of carbon must use chemical methods to use graphite.(1) Pure method of alkaline acid. The carbon content after the purity method of alkaline acid method can reach more than 99%, which has the characteristics of less one -time investment, high product quality, and strong process adaptability. The purity of metal mines can adopt the advantages of alkaline acid method). The alkaline acid method is a wide range of methods in my country today; its disadvantages are large energy consumption, long response time, large gr2023-12-11The service life of graphite crucibles
2023-04-25Pure method of high -carbon graphite
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