Roots Vacuum Pump for Smelted Metal

With the advancement of science and technology, vacuum smelting technology has also made great progress. Traditional methods have been unable to adapt to the needs of the development of smelted metal processing.

Therefore, the purpose of this article is to find ways to reduce gas content, control chemical composition, improve ingot quality, eliminate internal and surface defects and improve metal purity degree, to find solutions for producing products that are difficult to produce by ordinary methods.

Because our roots vacuum pumps are widely used in vacuum coating, vacuum casting, vacuum melting, vacuum degassing, vacuum distillation, vacuum drying and other industries. Considering the characteristics and principles of the roots vacuum pump, we believe that roots vacuum pump for the smelted metal is a feasible solution.  


Roots Vacuum Pump Characteristics 

  1. Larger pumping speed in a wider pressure range.

  2. Quick start, it can work immediately.

  3. Insensitive to dust and water vapor contained in the pumped gas.

  4. The rotor does not need to be lubricated, and there is no oil in the pump cavity.

  5. The vibration is small, the dynamic balance of the rotor is better, and there is no exhaust valve.

  6. The driving power is small and the mechanical friction loss is small.

  7. Compact structure and small

  8. Low operation and maintenance costs.  


Roots Vacuum Pump for Smelted Metal Advantages

  1. The content of gas and inclusions in metals and alloys is greatly reduced and the performance is improved.

  2. It can accurately control the chemical composition and make the alloy performance stable.

  3. Improve the compactness, uniformity and plasticity, and eliminate the white spot, segregation and cracking of the steel ingot.

  4. It can smelt metals such as zirconium and uranium that cannot be smelted in the atmosphere.


Vacuum pumps are widely used in the smelting and casting of stainless steel, electrical steel, bearing steel, high temperature alloys and refractory metals.  

Vacuum melting is of great significance to improve the quality and properties of steel and alloys. Roots vacuum pump for smelted metal has made great progress in super alloy materials, and the working temperature of the alloy has been increased from about 800 °C to about 1000 °C.

For a good metallurgical product, the composition should be controlled in the optimal range, the purity should be high, and the ingot structure should be better.

Vacuum smelting can achieve strict composition control, can effectively remove gas and reduce non-metallic inclusions, and can volatilize and remove some harmful metal impurities, so that the purity of steel and alloys is significantly improved, and the physical and mechanical properties of steels and alloys are improved.

Vacuum arc smelting and electron beam smelting can also obtain good ingot structure, which also expands vacuum metallurgy application scope.

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