Steering knuckle processing technology

Abstract

The invention relates to a steering knuckle processing technology mainly including the following steps: normalizing treatment of a whole casting part, to be more specific, first the whole casting part is put in an oven of 960 DEG C-980 DEG C for heat preservation for 2 hours, then is put in an oven of 150 DEG C-200 DEG C for cooling with the oven to the room temperature; and local supersonic frequency quenching of a bolt hole position, to be more specific, the local supersonic frequency quenching of the bolt hole position uses induction heating surface quenching, wherein an induction coil used in the bolt hole position is a circular ring enclosed by a copper pipe with a diameter of about 6-10mm, an induction coil used in the four corners of a plate spring is a copper pipe with a diameter of about 6-8mm, alternating current frequencies of the two induction coils are 48 ~ 52Hz, quenching mediums used in the induction heating surface quenching include H2O, NaCl and Na2CO3, and the mass ratio of H2O to NaCl to Na2CO3 is (900 ~ 1100): (8 ~ 12): (3 ~ 7). The steering knuckle processing technology can improve the steering knuckle hardness, increase the bearing weight, the wear resistance and reliability.

Description

Technical field: [0001] The invention relates to a processing technology of "steering knuckle" series of automobile suspension system devices. Background technique: [0002] The "steering knuckle" of the existing truck suspension system steering device cannot bear heavy tonnage and high-intensity work requirements, and the processing technology is relatively traditional, the product hardness cannot meet the actual work index, the safety factor is low, and safety is difficult to guarantee. Often the steering knuckle breaks and causes a rollover accident. In its replacement and repair, a series of connecting parts need to be disassembled, which is relatively difficult and labor-intensive. [0003] In order to solve the above problems, the current conventional steering knuckle processing technology mainly includes two steps: the overall normalizing treatment of the casting and the local supersonic frequency quenching at the bolt positioning hole: the overall normalizing treatm...

AI Technical Summary

Problems solved by technology

[0002] The "steering knuckle" of the suspension system steering device of the existing truck cannot bear the heavy tonnage and high-intensity work requirements, and the processing technology is relatively traditional, the product hardness cannot meet the actual work index, the safety factor is low, and safety is difficult to guarantee

Steering knuckles often break and cause rollover accidents

It needs to disassemble a series of connecting parts in its replacement and repair, which is relatively difficult and labor-intensive