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the blackening film is not firm is the common problem of such products. This process is also the most difficult to solve the key problem of the product. Workpiece blackening after the surface of the b... (more…)

The metal material is heated to a certain temperature (temperature according to different annealing methods), hold a certain time, and then slowly cooled (with the furnace cooling), in order to obtain... (more…)

The flow and pressure of ammonia can be adjusted by needle valve. The pressure in the tank is measured by a U-shaped manometer, which is generally controlled at 30~50mm oil column... (more…)

Thermocouple compensation wire selection table, nickel chromium, iron, copper, copper, cobalt iron,... (more…)

The hot air circulation fan can be divided into Saturday hot air circulation fan and centrifugal hot... (more…)

Quenching tank agitator control box is a supporting control electrical facility dedicated to control... (more…)

Blackening / blueing is widely used in the machinery manufacturing industry. The commonly used blackening / blueing methods are low-temperature alkaline blackening / blueing and normal temperature blackening / blueing. Steam trea...... (more…)

Quenching and cooling equipment is to control the composition, temperature, flow rate, pressure and motion state of quenching cooling medium to meet the purpose of obtaining the expected structure and performance of the quenched p...... (more…)

Isothermal annealing is a special form of complete annealing and the development of complete annealing. Most of it is also used for heat treatment of sub-eutectoid steel and eutectoid steel. Advantage: Isothermal annealing is now...... (more…)

Be sure to apply anti-corrosion paint before use.Always clean the scum on the edge of the crucible when using it. Ladle out the aluminum liquid in the crucible during long-term shutdown, clean the hanging slag on the crucible wall...... (more…)