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Bright annealing is refers to the cold rolled plate surface in a protective atmosphere without oxidation and decarburization annealing does not take. Protection of the atmosphere has a single inert gas argon or helium, also have a...... (more…)

Crucible can be divided into the graphite crucible, clay crucible and metal crucible (cast iron pot, stainless steel crucible and so on) three categories. Graphite crucible, is a crystalline form of natural graphite as the main ra...... (more…)

Hot air circulation oven manuals 1.Must pay attention to the supply voltage can meet the 1 before use. When in use, must be grounded outlet line according to the rules to stop grounding. 2.in electricity use, electric local avoid...... (more…)

Hot air circulation oven manuals 1.Must pay attention to the supply voltage can meet the 1 before use. When in use, must be grounded outlet line according to the rules to stop grounding. 2.in electricity use, electric local avoid...... (more…)

Heat treatment and harm FAQ Overheat Accessories from the roller bearing parts rough mouth microstructure was observed after quenching overheating. But to determine the exact extent of overheating must observe the microstructure. ...... (more…)

Spheroidizing mainly used in steel and eutectoid eutectoid steel, such as carbon tool steel, alloy tool steel, bearing steel. These steels are rolled, forged air cooling, the resulting organization is lamellar pearlite and cementi...... (more…)

Aging treatment To eliminate the measuring precision molds or parts used in the long dimensions , shape changes , often at a low temperature tempering ( tempering temperature 150-250 ℃) before finishing the workpiece reheated to 1...... (more…)

Nigrescence is a chemical surface treatment, its main role is a dense layer of oxide film formed on the surface of the workpiece, the workpiece to prevent rust corrosion, improve the wear resistance of the workpiece, it is only a ...... (more…)

tempering furnace Precautions and Maintenance 1, furnace temperature not exceeding 650 ℃. 2, into the parts do not charge higher than the upper basket. 3, non humid parts and parts with oil back into the stove. 4, ohmic heating is...... (more…)

Pit vacuum annealing furnace mainly for various mechanical parts for vacuum annealing, stress relieving is widely used in a variety of metals, alloys, crystal materials, bright annealing, vacuum degassing and so on. Different conf...... (more…)