How To Heat Treat BS1387 Seamless Steel Pipe?

The parts to be repaired during the heat treatment must be normalized, and the structural parts requiring mechanical properties must be tempered after normalizing to meet the mechanical performance requirements. Medium and high alloy steels and large forgings must be tempered at high temperature after normalizing to eliminate the internal stress generated during normalizing.

Annealing of small-diameter thick-walled tubes of BS1387 Seamless Steel Pipe is a heat treatment process in which metals and alloys are heated to a suitable temperature for a certain period of time and then slowly cooled. After annealing, the sub-eutectoid steel is ferrite plus flaky pearlite; the eutectoid steel or hypereutectoid steel is granular pearlite. In summary, the annealed tissue is a tissue that is close to equilibrium.

Seamless steel pipe small diameter thick wall pipe

Normalizing is a heat treatment process of BS1387 Seamless Steel Pipe supplier in which a small-diameter thick-walled pipe of a seamless steel pipe is heated to a temperature of 45 ° C above Ac3, and is kept in a static air for a suitable period of time.

Over-eutectoid steel normalizing heating knife Acm or more, so that the original mesh-like cementite is dissolved into austenite, and then cooled at a faster speed to inhibit the precipitation of cementite at the austenite grain boundary, thereby It can eliminate network carbides and improve the structure of hypereutectoid steel. Welded parts require normalizing of the weld strength to improve the weld structure and ensure weld strength.