Graphite Mold——Focus on alloy casting molds

We specialize in the processing of graphite products for 20 years. We are a professional carbon-graphite product supplier integrating R&D, production and sales. We have independent factories and advanced production lines, and can provide professional solutions according to customer needs. We have close cooperation with China’s top 100 enterprises. Graphite molds are widely used in various industries, from everyday electronic products such as mobile phones to aerospace and ship satellites. The graphite molds that we produce include large casting molds for high-temperature alloys and precision casting molds, hot-pressing molds, continuous casting molds, electronic sintering, packaging molds, and various shaped graphite molds for scientific research.

  • According to the different working conditions, we help customers select the most appropriate graphite material for graphite mold, and insure that the cost performance of the final product is optimal;
  • According to different technical requirements, selectively perform anti-oxidation treatment, impervious treatment or enhanced treatment on the final product to improve the use effect and prolong the service life;
  • With high processing precision, we can ensure the entire size of the final product meet the tolerance of customers’ requirements;
  • When the customer has clear technical requirements, GXGN Graphite mould can fully meet and exceed the customer’s expectations.
手机外壳3D玻璃模具

Hot Pressing Mold

3D曲面玻璃热弯石墨模具,包括盖板凸模和底板凹模

精密组合模具

Precision mold

形面复杂的产品如飞机、卫星、无人机、航天器等零件,其形状的表面是由多种曲面组合而成,有些曲面必须重新计算进行处理。

精密模具加工过程中受到材质、进度、形面复杂度等因素影响,模具的形状精度、位置精度、尺寸精度都会影响最终产品的精度。

高精度曲面装配模具
高精度曲面模具
叶轮模具AB面

Casting mold for high temperature alloys

Some high-temperature alloy parts for special-purpose need to be cast with graphite mold, which makes full use of the characteristics of high temperature resistance, small thermal expansion coefficient and small elastic modulus of graphite. In addition, the characteristics of graphite material are easy to process into mold.

烧结模具

烧结模具

烧结模具
封装模具
电子封装模具
连续铸造模具

连续铸造用石墨模具

连续铸造石墨模具,主要用于合金材料、复合材料、有色金属等的连续铸造用模具。其具有导热性好、高温下优良的自润滑性、耐磨性、机械强度等优点。
石墨热膨胀系数非常小,用作模具材料几乎没有形变。由于熔融材料而从铸模通过需要冷却成型,优秀的导热性能有助于快递冷却。石墨表现出的低热膨胀系数使模具能够发挥作用而不会变形或开裂。 石墨的自润滑性可以使模具和铸造材料之间产生低摩擦。
按铸造方式可分为水平铸造、垂直铸造两种。按铸造产品的形状分有圆形棒模、空心管模、异形模具。按孔数分有单孔石墨模、多孔石墨模。圆形涂层石墨模具,用于铜、铝、金、银、不锈钢、碳钢的水平连续铸造。

Due to its high temperature resistance, oxidation resistance, acid and alkali resistance, easy processing, and excellent strength and hardness at high temperatures, graphite molds have been applied to almost all high temperature forming industrial fields and harsh conditions like strong acid and alkali. Graphite molds can be used for non-ferrous and black metal casting industry, glass industry, electronics industry, photovoltaic industry, rare earth smelting industry. Graphite molds have been widely used in the following aspects:

  • Graphite molds for continuous casting and semi-continuous casting of non-ferrous metals                                                                                                                                            In recent years, continuous (or semi-continuous) manufacture from the state of molten metal is being promoted in both domestic and foreign industry. Domestically, this method has been adopted in copper, copper alloy, aluminum, and aluminum alloy. Artificial graphite is considered to be the most suitable material for continuous casting or semi-continuous casting of non-ferrous metals. Practical production proves that due to the good thermal conductivity (thermal conductivity determines the solidification speed of metal or alloy) graphite mold, the self-lubricating and other properties of the mold improve the speed of the mold. Besides, with the accurate size, smooth surface, and uniform crystal structure, ingot can be directly processed in the next process. This not only greatly improves the yield, reduces the loss of waste, but also greatly improves the quality of the product. Continuous casting methods include vertical continuous casting and horizontal continuous casting.
  • Die casting mold                                                                                                                                                                                                                                                                Artificial graphite materials have been successfully used in pressure casting of non-ferrous metals. For example, zinc alloys and copper alloy castings produced by pressure casting mold made of artificial graphite material have been used for automotive parts and the like.
  • Graphite mold for centrifugal casting
    Graphite molds have been successfully applied to centrifugal casting. Artificial graphite molds with a wall thickness of 25 mm or more have been used to centrifugally cast bronze casings in US. In order to prevent the burning of the artificial graphite mold, 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 burnt, the inner hole of the mold can be enlarged to be used for casting a large-sized sleeve.
  • Hot pressing die
    The artificial graphite hot press die has the following characteristics for the pressure sintering of cemented carbide: 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 the cold pressing pressure); second, pressurization and heating are carried out in the same process, and a dense sintered body can be obtained by sintering for a short time.
  • Glass forming mold                                                                                                                                                                                                                                                                    Because graphite material has chemical stability, it is not easy to be infiltrated by molten glass, does not change the composition of glass. Graphite material has good thermal shock resistance, and its size varies little with temperature, so it has become indispensable mold material in glass manufacturing in recent years. It can be used to make glass tubes, elbows, funnels and other molds for various shaped glass bottles.
  • Sintering molds and others
    The use of artificial graphite materials with extremely small thermal deformation, the manufacture of sintering molds and supports for transistors has been widely used. It has become an indispensable material for the development of the semiconductor industry. In addition, graphite molds are also used in cast iron molds, durable molds for various non-ferrous metals, cast steel molds, molds for heat-resistant metals (titanium, zirconium, molybdenum, etc.) and aluminum for welded rails, etc.