Heat treatment of stainless steel
Technical characteristic
The heat treatment of stainless steel involves heating, holding and cooling. The chemical composition of stainless steel after such treatment remains unchanged, but the properties can vary over a wide range. Heat treatment of stainless steel can be used to strengthen or de-strengthen the workpiece. It may be necessary to reduce the strength if the workpiece has to undergo some kind of treatment, such as cutting. Increasing the hardness is necessary in order to achieve operational properties. Heat treatments are performed under different conditions, where heating times and temperature levels, heating and cooling rates, and holding times in the heated state are varied. These processes have been developed over the centuries,
Heating
Heating can be thermal, chemical-thermal or thermomechanical. It must ensure that the material heats evenly, in which the necessary transformations occur in the structure, but does not cause deformation or cracking. It is necessary to use the resource of the furnace as much as possible. Heating can be done directly, gradually or in steps. When selecting the heating rate, the grade of stainless steel, the weight of the workpiece and the type of subsequent processing are taken into account. The heating time largely depends on the method (furnace heating, flame or high-frequency electric heating), on the total weight of the metal and the grade physical properties of stainless steel (heat capacity, thermal conductivity). The rate of heating depends on the type of billet, the chemical composition of the steel and the temperature range.
Stamina
Exposure of the billet is necessary so that at the achieved temperature the structural transformations are fully completed. If the optimum time is not calculated correctly, the steel may begin to free from carbon, which can lead to scale formation. High heating temperatures require minimal dwell time.
Cooling
The rate at which the billet cools depends on the environment that surrounds it. Cooling in water reaches a rate of 300 degrees per second, cooling in a furnace is 20-30 degrees per hour. Outdoors, of course, the cooling process is faster than in the furnace.
Supplier
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Supplier "Auremo" offers to buy stainless steel, the price - due to the technological features of production without the inclusion of additional costs. The company's website displays information about the latest arrivals of products. It is possible to buy products with non-standard parameters to order. The order price depends on the volume and additional terms of delivery. The supplier "Auremo" invites to buy stainless steel in bulk or by installments. We have the best price-quality ratio for the whole range of products. In this segment Auremo is a profitable supplier.
