Advantages of microwave sintering for tungsten alloys
Microwave sintering of tungsten alloys uses the dielectric loss of the tungsten alloy material in the microwave electromagnetic field to bring the material to the sintering temperature to achieve the sintering and densification of tungsten alloy products. The microwave heating temperature field is uniform and the thermal stress is small, which is suitable for fast sintering. The microwave electromagnetic field promotes diffusion and accelerates the sintering process, which can make the tungsten alloy material grain refinement, effectively inhibit the abnormal grain growth and improve the uniformity of the material microstructure.
Rapid heating reduces the grain coarsening caused by surface diffusion (mainly occurs in the low temperature stage of conventional sintering) and provides a stronger driving force and shorter diffusion path for grain boundary diffusion and volume diffusion, which leads to the refinement of tungsten alloy microstructure and promotes rapid densification of the billet.Zhuzhou pintejin adopts high-precision automatic equipment to produce products with higher precision. We have quality inspectors involved in testing every semi-finished process, up to the finished process, and deal with problems in time to ensure that tungsten alloys and other products leave the factory qualified.
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