Selection method of quenched and tempered piston rod blank:
Because the working mode of the quenching piston rod is a reciprocating mode, in order to increase the life of the piston rod and reduce the wear haze of the piston rod, the blank is made of alloy structural steel of 38CrMoAlAn. Since the quenched and tempered piston rods are selected for small batch production, in order to improve the production power, free forging blanks should be used.
Determination of the shape and dimensions of the blank:
1, the shape of the blank
According to the processing precision requirements of some parts drawings, the scale tolerance grade of forgings is 8-12 grades, and because the quenched and tempered piston rods are selected for small batch production, consider selecting cylindrical blanks.
2, rough wood scale
Because the blank is made by free casting, according to the scale requirement of the quenched piston rod parts drawing and the practical processing requirements, the dimensions after casting are: diameter 62mm, length 1150mm, check the technical manual, determine the scale of the blank is 80mm diameter, The length is 760mm.https://www.xhychromerod.com/