Vacuum smelting can get composition strictly controlled, remove gas and reduce non-metallic inclusions sharply , and volatilize some harmful metal impurities, which significantly improve the purity of steel and alloy, and thus their physical and mechanical properties are optimized.

The "double vacuum" process of vacuum induction+vacuum consumable arc-melting is the most typical and mature process for smelting of high-end metal materials in the world. For superalloys, electrodes are usually cast by vacuum induction smelting, and then ingots are remelted by vacuum consumable electrode arc furnace.

Double vacuum smelting at constant melting rate can improve ductility, rupture strength at elevated temperature, fatigue strength, creep resistance and fracture strength of superalloy. It realizes stable processing, with parameters of the production equipments keeping at a high level, so that the product surface quality approaches expectation.

Yining Vacuum focuses on VD-Vacuum Degassing and VOD-Vacuum Oxygen Decarburization, and tailors dry vacuum solutions for smelting. The dry vacuum pump made by Yining Vacuum replaced the steam jet pump in the project of production equipment transformation, which saved more than 95% energy as real case data showed and also solved the pollution problem since dry vacuum pump is without media type.

Series of Yining Vacuum products available to your specific process requirements:

GZ series MULTISTAGE CLAW TYPE DRY PUMP

GZ series claw type dry vacuum pump adopts modular design, independent substitutions of accessories, lower operating costs. No oil and no sewage - clean and environmental protection, free of sewage treatment fee.

LG Series Euqal-Pitch Screw Dry Vacuum Pump

High pumping speed, no internal compression, material will not condense in the pump. Applicable to impurities containing particles and condensable gases。

LGB Series Variable Pitch Screw Dry Vacuum Pump

LGBF Series Anti Corrosion Screw Dry Vacuum Pump

The rotors made of various materials and the pump cavity are subject to anti-corrosion treatment to adapt to severe working conditions.

JZJLG Series Dry Screw-Roots Unit

JZJLG Series Dry Screw-Roots Unit adopts modular design, with dust collection system before the pump, pumping speed adjustable, and pressure adapted in wide range. The molten steel discharges metal vapor, which will cool, condense and form fine metal powder, and then move to the vacuum system. The dust collection system before pump is optional.

Other Dry Unit

GZ series claw pump or LG series screw pump and ZJ series Roots pump can form two or three stage vacuum unit. A single set of units can achieve 300-3700L/S

pumping speed. We make accurate calculation according to the customer's working conditions, and on the basis of fully meeting the vacuum requirements, taking into account the requirements of cost, performance and environmental protection, we can configure customized unit for users.