How is the trailer axle processed? How to make a qualified trailer axle?

Taking the trailer axle of Darong Group as an example, we start with raw materials. The trailer axle is selected 20Mn2 high-strength alloy seamless steel pipe with wall thickness of 11mm, and the quality test is qualified, and the production process is officially entered.

1. According to the drawings, cut the steel pipe into a length that is convenient for processing;

2, into the hot rolling process, through the heat treatment process of up to 1300℃, the steel pipe to create a shaft beam prototype;

3, according to the drawings of the shaft part of the processing to ensure the subsequent processing size;

4, through the cold push square process, the shaft tube is processed from round to square;

5, quenching + tempering, improve the hardness, strength and toughness of the shaft tube;

6. Shot blasting and sandblasting, clean up the oxide and oil after heat treatment, improve the finish of the shaft tube;

7. Straighten the axle to further improve the accuracy of the axle;

8, primer spraying, providing isolation, moisture-proof, anti-oxidation and anti-corrosion effect, improve the adhesion of subsequent top paint;

9. CNC machine tool processing, finishing the shaft head position to ensure the shaft head accuracy;

10, the bearing and shaft beam connection part of the medium frequency induction strengthening treatment, enhance the strength of the shaft head, to ensure the stable performance of the shaft head and bearing under high speed;

11, check the size and thickness of the shaft head, and apply anti-rust oil after acceptance;

12, spray paint, with primer, to protect the shaft from erosion;

13, install shaft nut locking gasket, welding brake plate, spherical bearing, air chamber seat;

14, sampling of semi-finished products, millions of anti-fatigue test qualified, into the assembly link;

15, on the basis of semi-finished products, install wheel hub, brake drum/brake disc, internal and external bearings and other parts.

16. Enter the finished product quality inspection link and conduct quality inspection on the finished axle.

17, after passing the quality inspection, enter the finished product warehouse, arrange the delivery according to customer needs.

The above is the complete production steps of the trailer axle from raw materials to the finished product, executed under unified production standards, even if it is a screw to which Angle, to what degree of tightness, there are relevant standards and specifications, only each process is strictly checked, in order to ensure the final quality of the finished product.