1. Powder metallurgy method: Powder metallurgy method is one of the main methods for preparing discharge tungsten rods. This method is to make tungsten powder into tungsten blanks through processes such as pressing and sintering, and then make discharge tungsten rods through processes such as processing and heat treatment. The advantages of this method are high production efficiency and low cost, but the purity of the tungsten rods produced is low.
2. Melting method: The smelting method is to heat the tungsten raw material to a molten state, and then make tungsten ingots through processes such as refining and pouring, and finally make discharge tungsten rods through processes such as processing and heat treatment. The advantages of this method are that the tungsten rods produced are of high purity and good mechanical properties, but the production efficiency is low and the cost is high.
3. Machining method: The machining method is to process tungsten rods or tungsten plates into discharge tungsten rods through mechanical processing methods such as turning and milling. The advantages of this method are that the tungsten rods produced are of high precision and good surface quality, but the production efficiency is low and the cost is high.
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