Effect on metal structure and properties
Effect on metal structure and properties
PRODUCT
The normalizing process of the steel
by：Waxing
2020-09-17
one
Purpose and application of normalizing is heated to a critical point Ac3 steel or all kinds of metal machinery parts or Accm above the appropriate temperature, heat preservation after a certain time in the air cooling, pearlite matrix structure of heat treatment process.
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Process specification (
1)
Commonly used are fire heating temperature and hardness of the steel grade value.
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You may refer to the calculation of normalizing heat preservation time, quenching process procedures.
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The cooling normalizing artifacts, as a general rule, be empty cold, big normalizing and fan cooling, spray cooling, etc. , can be applied to obtain the ideal effect.
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Operating points (
1)
Normalizing temperature process specification similar artifacts, and furnace processing.
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2)
To require high surface quality of workpiece heating should be taken to prevent oxidation and decarburization, gas protection.
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3)
Artifacts usually adopts the working temperature or slightly higher than working temperature of furnace.
If overlap loading, should be extended accordingly 1/4 time of heat preservation.
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Artifacts should be evenly placed in the chamber of a stove or furnace effective work area.
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Artifacts, after should be scattered placed in dry air cooling, shall not be piled up artifacts, shall not be in the damp place.
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