ASTM A285M Grade A steel plate Heat treatment

ASTM A285M Grade A steel is a medium and low tensile strength carbon steel sheet for melting and welding pressure vessels.According to the manufacturer's choice, ASTM A285M Grade A steel plate can be produced by calming steel, semi-killed steel, capped steel or boiled steel smelting

ASTM A285M Grade A steel plate Heat treatment

ASTM A285M Grade A steel plate is usually supplied in rolling condition and can also be ordered by normalizing or eliminating internal stress

ASTM A285M Grade A steel plate Normalizing

Normalizing is to heat the ASTM A285M Grade A steel plate to Ac3 (Ac refers to the critical temperature at which all free ferrite is converted into austenite during heating, typically from 727 degree to 912 degree) or Acm (Acm is The temperature that is over 30 minutes to 50degree, after a period of time, the ASTM A285M Grade A steel plate is taken out of the furnace in air or sprayed, sprayed or blown to cool Of the metal heat treatment process. Its purpose is to make grain refinement and carbide distribution uniformity to improve hardness, improve processing performance, remove the ASTM A285M Grade A steel plate's internal stress, stabilize the workpiece size, to prevent deformation and cracking.

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