Soft Annealing

Soft Annealing is an industrial product that is essential for melting furnaces. It is specifically designed to provide soft and uniform annealing of metals. As a manufacturer, producer, and service provider, we offer a soft annealing product with a standard size and new condition. Our product comes with a 1-year warranty to ensure customer satisfaction. Soft Annealing is known for its superior quality and efficiency. It is widely used in the industrial sector to enhance metal strength and durability. Our product specifications guarantee that you will receive the highest quality product available in the market. Trust us to deliver a reliable and efficient solution to meet your industrial needs.

Steels that have not been heat treated show non-uniform hardness values at room temperature, depending on the amount of carbon they contain. Some of the steels cannot be easily processed due to their hardness values. Subsequently, softening annealing is applied to the materials. Soft annealing provides the desired structural, mechanical and physical properties and makes the material suitable for machining and cold forming. This process is based on keeping the steel at the appropriate temperature determined until the desired changes are achieved and then slowly cooled.

Soft annealing is applied to steel in order to reduce the hardness of the material, to reduce the grain size, to facilitate chip removal and to prevent residual stresses in casting and forging parts, which is one of the most important points. By heating the sub-eutectoid steels to Ac3, and the supra-eutectoid steels to certain temperatures above the Ac1 temperature value lines, the internal structures are transformed into austenite. It is then left in the oven to cool slowly. Softening annealing also contributes to the improvement of magnetic and electrical properties in steels. The process temperature is generally between 700deg C and 900deg C. Temperature values are determined according to the structure of the steel. Soft annealing is mainly applied to steel, but can also be applied to copper and brass. Various changes occur in the internal structure of the steel at different stages of the annealing process. The original structure at the beginning is composed of perlite and coarse ferrite. At a temperature above the Ac1 line, there is no change in the ferrite structure, but it is seen that the pearlite turns into fine-grained austenite. At temperatures above Ac3 the structure completely transforms into fine-grained austenite. As a result of allowing the part to cool at room temperature, an internal structure consisting of fine ferrite and small perlite grains is obtained.

During the ceiling of a coarse-grained sub-eutectoid steel, there is no change in the internal structure of the steel when the piece is heated up to the Ac1 temperature. At Ac1 temperature, the ferrite grains remain unchanged in the structure without any change, while the pearlite regions turn into fine-grained austenite by eutectoid reaction. If the cooling of the part startsfrom Ac1, the desired change in the grain size of the steel cannot be achieved. However, if heating continues between Ac1 and Ac3 lines, coarse ferrite grains begin to transform. The coarse ferrite grains transform into fine austenite grains between Ac1-Ac3. If it is above the Ac3 limit value, the internal structure of the material completely turns into fine-grained austenite. As a result of all these processes, the steel is left to cool in the furnace and an internal structure consisting of non-eutectoid fine ferrite grains and coarse lamellar perlite regions is obtained. 

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