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High density carbon graphite mold
- 99999 Piece / Pieces per Month
- Shanghai Tianjin Qingdao
- T/T Credit Card
Product Details
Application: | Pressure casting, hot die, forming under high temperature | Technique: | Die Molded | Dimensions: | all size |
Porosity (%): | 0.8% | Compressive Strength: | 30-125 | Place of Origin: | Henan, China |
Brand Name: | BFMC | Model Number: | JS-gaphite mold |
Product Description
Properties:
1 excellent thermal and electrical conductivity and low coefficient of thermal stability good expansion
2 line and anti heat shock
3 resistance to chemical corrosion and most metal is not easy to react at high temperatures
4 (in most of the copper matrix sintering temperature of 800 °C) intensity increased with the increasing of temperature
5 good lubrication and abrasion resistance
6 easy processing, mechanical processing performance is good, can mold into complex shape, high precision
Applications:
Application of the graphite mould at present, graphite mold is mainly obtained the widespread application in the following aspects:
1 non-ferrous metal continuous casting and semi graphite mould continuous casting: in recent years, both at home and abroad are popularized by the molten metal state (continuous or semi continuous) method for producing bar or pipe and other advanced. In the domestic copper, copper alloy, aluminum, aluminum alloy and so on have already started using this method. Artificial graphite as a continuous casting of nonferrous metal or semi continuous casting mold is considered to be the most suitable materials. Production practice has proved that, as a result of the graphite mold, because of its good thermal conductivity properties (thermal conductivity of the solidification rate of metal or alloy), good self-lubricating performance factors such as mold, the casting speed, and because the ingot precise size, smooth surface, uniform crystalline structure, can be processed directly under the procedures the. This not only greatly improve the rate of finished products, reduce waste, but also greatly improve the quality of the products. Method of continuous casting method and horizontal continuous casting of two vertical continuous casting.
2 pressure casting mould: artificial graphite materials have been successfully used for the pressure casting of non-ferrous metals. For example, manufacturing with artificial graphite material pressure casting mold production of zinc alloy and copper alloy castings have been used for automobile parts etc..
3 centrifugal casting: Shi Momo has been successfully applied in centrifugal casting. The United States has a wall thickness of 25 mm above the artificial graphite mould of centrifugal casting bronze sleeve. In order to prevent the artificial graphite mold burning, can take some measures to prevent oxidation. Casting a certain number of castings, if it is found that the mold surface burn, the mold hole size expanded to casting large size casing.
4 hot pressing die: artificial graphite hot pressing die for has the features of pressurized sintering cemented carbide: if the compaction temperature to 1350-1450 degrees, the unit pressure can be reduced to 67-100 kg / cm2 (i.e. cold pressure 1/10) can; two is pressurized and heated in the same procedure, get the sintering of the compact sintered can short time.
5 Die with glass forming: because the graphite materials with chemical stability, is not easily affected by infiltration of molten glass, does not change the composition of this glass, graphite heat shock resistance performance is good, the characteristics of small size change with temperature, so in recent years in glass manufacture to become indispensable to the mold material, it can be used to manufacture glass tube, pipe, and other special-shaped mold funnel glass bottle.
6 the sintering mold and other diamond die: the minimum deformation of artificial graphite materials heat, sintering mould and support manufacturing transistor, widely used now, it has become indispensable to the development of the semiconductor industry material. In addition, graphite mold cast to also use cast iron, non-ferrous metals with the durability of the mold, casting mold, refractory metal (Ti, Zr, Mo) aluminium heat welding casting and welding of rail for casting etc.. Hot pressing sintering diamond tools by graphite mold, shoulders the dual role of the heating element and the mold support in diamond tool manufacturing process, graphite mold quality, directly affects the dimensional accuracy of diamond tool, outward appearance. Requirements: hot press sintering temperature reached (1000 ± 2) °C, pressure 16 ~ 50 MPa, the pressure and temperature holding time is 15 ~ 30 min, environment for non vacuum condition. In this condition, not only requires forming and the heating element is electrically conductive graphite mold, high resistivity, sufficient mechanical strength, also need to have excellent oxidation resistance and long service life, to ensure that the diamond tool precision and excellent performance. At present, the diamond tool in western developed countries manufacturing materials with graphite mold, mainly for graphite ultrafine grain structure, high purity and high graphitization degree, the average particle size of less than 15 μ m, even under 10 m, average pore size of less than 2 μ M. Graphite mold made of the carbon material, the porosity is small, compact structure, high surface smoothness, strong oxidation resistance, and average service life up to 30 ~ 40 times. Diamond die requirements of material of high hardness, good oxidation resistance, high machining accuracy, using high quality raw materials of graphite greatly prolongs the service life of die and improve antioxidant properties.
Specifications:
the outer diameter≤148mm
ash | density | compressive strength | flexural strenght | resistivity |
≤700ppm | ≥1.82g/cm3 | ≥55mpa | ≥40mpa | ≤13μΩm |
the outer diameter≥160mm
ash | density | compressive strength | flexural strenght | resistivity |
≤700ppm | ≥1.80/cm3 | ≥50mpa | ≥35mpa | ≤13μΩm |
the outer diameter≤148mm
ash | density | compressive strength | flexural strenght | resistivity |
≤700ppm | ≥1.75g/cm3 | ≥50mpa | ≥35mpa | ≤13μΩm |
the outer diameter≥160mm
ash | density | compressive strength | flexural strenght | resistivity |
≤700ppm | ≥1.70/cm3 | ≥45mpa | ≥30mpa | ≤13μΩm |
Contact Us
- Baofeng Jinshi New Materials Co., Ltd.
- Contact namejudy lu Chat Now
- Phone86-0375-3362288
- AddressBaofeng County , Longxing Road NO.10 Pingdingshan,Henan
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