How to distinguish whether the trailer bridge is qualified?

Trailer axle is one of the core components on the trailer, its quality and performance are directly related to the safety of the trailer, such as bearing, braking, maintenance and so on. A high-quality axle with high processing precision, good bearing performance, sensitive and efficient braking, long maintenance cycle, good coordination between various parts, can protect and reduce tire wear, not only can ensure vehicle safety, but also can help owners reduce comprehensive vehicle costs.

But like other consumer goods on the market, there are fake and inferior products in Cheqiao. These fake axle braking effect is poor, poor operation performance, shaft beam, bearing, hub easy damage, light leads to tire bias wear phenomenon, although does not affect driving, but increases the cost of a lot of car, heavy is easy to lead to safety accidents, such as brake failure, Trailer axle fracture, bearing damage, tire from and so on, any kind of occur in the process of high-speed driving, the consequences are unimaginable, Transportation safety is not guaranteed.

The substandard quality of these shoddy Trailer axle is largely related to its production technology. For example, the strength of the selected raw materials is not enough or the parameters are false, the process in the production process is backward and cannot reach the industry standard, and the straightening and heat treatment of the axle are not qualified, which will easily lead to the deformation of the axle after leaving the factory, which will directly lead to the failure of the trailer in use.

If you want to produce a qualified axle, you must strictly check the raw materials from the beginning. Raw materials are the basis of all performance. Only by ensuring that the thickness, strength and toughness of raw materials meet the design targets can a series of subsequent processing procedures be meaningful.

After the selection of raw materials, first of all, according to the drawing size, with a sawing machine to cut it, easy to follow up processing;

After the material is finished, it enters the hot spinning rolling process. Through the heat treatment technology up to 1300℃, the molding resistance and deformation energy consumption of raw materials are reduced, and the casting defects are reduced or eliminated.

After cooling, the shaft head part is cut to ensure that the size of the shaft head meets the requirements;

If it is a square shaft tube, then it is necessary to carry out cold push square treatment, to ensure one-time molding, so as to reduce and avoid bending of the material, if it is a circular shaft tube, there is no need to push square, directly into the quenching process;

Digital intermediate frequency induction equipment is adopted to ensure the operation accuracy. Under high temperature treatment, the stiffness, wear resistance and fatigue resistance of the material are improved again.

After quenching, tempering must be carried out to eliminate the internal stress generated by the raw material in the quenching link and improve the ductility and toughness of the shaft;

Next is shot blasting, the heat treatment process to remove the residual oxide, oil, etc., to improve the finish;

Then a multi-point straightening machine is used to straighten the shaft tube on line.

After processing, including boring, washing and milling, drilling, CNC machine tools, etc., to ensure the high precision of products;

Next, intermediate frequency induction treatment is carried out for the key parts of connected bearings, and further finishing is carried out to improve the safety and stability of the axle to a greater extent. After completion, it enters the comprehensive inspection link. If the inspection is qualified, it is the semi-finished optical shaft.

Next is welding, painting, installation of shaft nut lock gasket, this step is completed to get the welding semi-finished product.

Finally, the welded semi-finished products and special bearings, hubs and other assembly, make the axle, finished product quality detection and performance test qualified, a high quality axle is completed.

Thus, it can be seen that the production of axle is not a simple matter, and any problem in the production process will lead to the quality of the final product is not up to standard. Therefore, buy the axle or choose a reliable brand.

However, some car owners buy fake and inferior products, a large part of the reason is because of the cost. Now on the market of big brand axle, the price is relatively expensive, such as the current new disc axle, the unit price can be more than 90 million or even more, if a car needs three axle, the cost is about 30,000.

However, owners do not let the initial price confused, although the inferior axle sold cheap, the subsequent series of use of the cost is expensive, the cost is not reduced, but higher to a lot. Moreover, the qualified axle in the market is not all priced extremely high, there are still some reliable quality and affordable brand, such as DARO trailer axle, as the Liangshan commercial vehicle base of the first batch production of all-in-one axle enterprise, now after 20 years, the strength and technology is trustworthy, the above series of production steps are the true portrayal of DARO factory. Many trailer enterprises and logistics companies choose DARO as their fixed axle partners, which is cost-effective, useful for products, saving money and worrying, and has won wide praise from market users.