Keywords: Quench, calcium chloride, quenching medium, quenching, heating, density,

　　Application example of calcium chloride aqueous solution quenching medium Cam
　　Cam, the material is 40Cr, and the shape is shown in the figure.

　　the original process of this part is heating at 840 ℃, heat preservation for 2h, water quenching, 72 pieces of products are all scrapped due to cracks in thin walls, keys and grooves. After that, the calcium chloride aqueous solution with a density of 1.48g/cm3 was used for quenching, and all 40 parts were qualified without cracks.

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