Strengthen-Toughening Treatment for 20 Steel

The cannula in a rear suspension of a car is adopted to implement a series of appropriate procedures to supersede the imported raw material Cq15. Selective 20 steel have fulfilled the requirements of stability test by controlling the cooling rate in the process of strengthening-toughening treatment.So far,the localization trail-production is completed and have met the demand for the design of the cannula.