Wuxi Haiwo Metal Products Co., Ltd.
Wuxi Haiwo Metal Products Co., Ltd.
Add to Cart
S35C 1035 1045 Bright Surface Carbon Steel Plate Carbon Steel Sheet 1250mm Width
45 steel has low hardenability, so a 10% saline solution with a high cooling rate should be used. After the workpiece is filled with water, it should be quenched, but not cooled. If the workpiece is cooled in salt water, it may crack. This is because when the workpiece is cooled to about 180 ℃, the austenite rapidly transforms into martensite, causing excessive structural stress.
Therefore, when the quenched workpiece quickly cools to this temperature range, a slow cooling method should be adopted. Due to the difficulty in controlling the outlet temperature, it is necessary to operate based on experience. When the workpiece in the water shakes and stops, the outlet can be cooled by air (oil cooling is better if possible). In addition, the workpiece should be moved rather than static when entering the water, and regular movements should be made according to the geometric shape of the workpiece.
