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Quenching and Tempering of Machine Tool Castings

We all know that the commonly used cooling media for quenching are brine, water and oil. The workpiece quenched in salt water is easy to obtain high hardness and smooth surface, and it is not easy to produce soft spots that are not hardened, but it is easy to cause serious deformation of the workpiece and even cracking. The use of oil as the quenching medium is only suitable for the quenching of some alloy steels or small-sized carbon steel workpieces with relatively high stability of supercooled austenite.

Quenching and Tempering of Machine Tool Castings

We all know that the commonly used cooling media for quenching are brine, water and oil. The workpiece quenched in salt water is easy to obtain high hardness and smooth surface, and it is not easy to produce soft spots that are not hardened, but it is easy to cause serious deformation of the workpiece and even cracking. The use of oil as the quenching medium is only suitable for the quenching of some alloy steels or small-sized carbon steel workpieces with relatively high stability of supercooled austenite.

Quenching and Tempering of Machine Tool Castings

We all know that the commonly used cooling media for quenching are brine, water and oil. The workpiece quenched in salt water is easy to obtain high hardness and smooth surface, and it is not easy to produce soft spots that are not hardened, but it is easy to cause serious deformation of the workpiece and even cracking. The use of oil as the quenching medium is only suitable for the quenching of some alloy steels or small-sized carbon steel workpieces with relatively high stability of supercooled austenite.