Annealing, quenching and heat treatment of heat-resistant relaxation steel

Are you interested in annealing, hardening and heat treatment of heat-resistant relaxation-resistant steel? Supplier Avlob offers to buy heat-resistant, relaxation-resistant steel at a bargain price. The supplier guarantees the timely delivery of products to any address in Europe or abroad. Regular customers receive a discount discount. The price is the best in this segment.

Preliminary heat treatment

It is carried out in order to increase the ductility of these steels before their plastic deformation, as well as to remove the thermal stresses caused by welding. Annealing — the main type of preliminary heat treatment can be realized in two varieties:

Annealing of the first kind

Heating occurs to a temperature below the austenitic transformation, with holding and subsequent cooling at a certain rate. As a result, internal stresses are removed, and the structure is optimized to improve strength, ductility, electrical resistance. The temperature of such annealing, also called recrystallization, is relatively low, and does not exceed 200… 250 ° C. To eliminate the dendritic liquation, diffusion annealing is used, the temperature of which in this case is higher, and the holding is carried out for a longer time.

Annealing of the second kind

It is carried out only for steels capable of phase transformations in the solid state. In this case, after heating, there is a recrystallization of the excess phases that disappear during the dissolution process in the main phase. Upon subsequent cooling, they are released from the solid solution. Phase recrystallization, which is performed in the process of rapid cooling, is called normalization. As a result of normalization, the structure of heat-resistant and relaxation-resistant steels becomes less equilibrium. Supplier Avlob offers to buy heat-resistant and relaxation-resistant steel at a bargain price. The price is the best in this segment of rental.

Hardening

Hardening increases the hardness and strength of steel. After quenching, heat-resistant and relaxation-resistant steels acquire the structure of a supersaturated solid solution. Cooling is performed at high speed, which must exceed the critical one. Only in this case it is possible to fix the single-phase state of such steels. If as a result of quenching, austenitic strings are formed, then such processes are called austenitization. In all cases, when a non-equilibrium structure (for example, martensite) is fixed by rapid cooling, the process is more correctly called quenching. Hardening is considered the most important heat treatment process.

Vacation

In some cases, hardening of steel is accompanied by an increase in its fragility. Therefore, almost always after tempering should be a vacation. It is carried out using similar technologies used for annealing. Accordingly, at low temperatures, tempering is called low, and at high temperatures — high.

Delivery, price

Are you interested in hardening and heat treatment of heat-resistant, relaxation-resistant steel? To buy heat-resistant, relaxation-resistant steel at an affordable price from the supplier Avlob today. The price is formed on the basis of European production standards. The supplier Avlob offers to buy heat-resistant, relaxation-resistant steel at the optimal price in bulk or at retail.