With the continuous improvement of vehicle production technology, there are more and more axle brands in the market. But to say which brands are qualified and cost-effective, Darong axle is definitely among the best. Especially in the cars of many old drivers, the appearance rate of the axle with "rsccz" logo is not small.

Rich product categories to meet the different needs of users

Darong heavy industry group, formerly known as Darong Transportation Machinery Co., Ltd., was established in 2001 and has a history of 20 years. Darong axle has many categories, mainly including American and German series, which can be subdivided into disc, drum, low flat plate, concave, internal / external, single / double tire, three wire six axle, special axle and other categories. In addition, it also involves trailer accessories such as air suspension, single point suspension, bearing, wheel hub and so on.

At present, the most popular axle of Darong is the American 13T standard drum axle. The price of this axle is relatively low, and the accessories are common in the industry. It has the characteristics of strong bearing capacity and convenient maintenance. It has a very high application rate on semi-trailer. In addition to the standard model, this axle also extends 10t light weight, 13T widening, 16t, 20t, 25t and maintenance free styles, which can meet different transportation conditions.

Driven by relevant policies, the popularity of disc brakes is also increasing. Darong disc axle entered the market in 2018. The integrated alloy brake disc is selected, and the heat conduction speed is better than that of ordinary materials. After thermal quenching and tempering treatment, it is stronger and more wear-resistant, and the heat capacity is higher, so it is not easy to overheat in use.

The quality of the axle is closely related to the parts. The bearing of Darong axle is P6 high-grade bearing, which has the characteristics of high precision, high bearing capacity and low rolling resistance, with less friction resistance and longer service time; The brake pads are special high setting products for trailers, with less high temperature recession and more stable braking; The hub is made of low-pressure cast lightweight material, which performs well in tensile strength, yield strength and high-speed balance, and can calmly deal with various complex road conditions.

Multi process support escort product safety

As a medium and heavy freight vehicle, the transportation condition of semi-trailer is more complex than that of ordinary vehicles, so the quality requirements of vehicle axle are also more strict. In addition to the control of raw materials and parts mentioned above, the production process is also very important. Darong axle has set up more than ten processes in the production process, such as hot rotary rolling, cold square pushing, full-automatic quenching and tempering, sand blasting straightening and so on. Today, let's take a look at the four main processes related to load-bearing performance.

"One piece" heat treatment molding: the axle is stronger, more durable and more resistant to heavy load.

The so-called "one-piece" heat treatment molding means that the axle body and axle head of the axle are made from a seamless steel pipe through heat treatment technology, and the axle head and axle beam are integrated without additional welding of the axle head to the axle beam like the traditional "three-piece" axle.

The axle manufactured in this way has no trace of manual connection between the axle head and the axle beam, which fully avoids welding deformation and has stronger resistance to heavy load.

Finish machining of CNC machine tool: ensure the accuracy and parameters of axle.

The number of components of the axle is up to nearly 100, which is a real precision machinery. If the accuracy is not up to standard, when bearing the variable load of the vehicle in use, it is easy to form small cracks in the high stress area, which will eventually lead to axle fracture and affect safety.

Axle finishing is like laying a foundation for a high-rise building. Only by mastering the accuracy, parameters and dimensions can the produced axle be stronger and more durable.

Medium frequency induction strengthening treatment: ensure the stable performance of the lower axle at high speed.

Mainly for the key parts of the connection between the shaft head and the bearing, add medium frequency quenching treatment to further improve its strength, toughness and other properties, so as to ensure the stable performance output of the axle in use, especially under high-speed operation.

Million fatigue tests: ensure that the fatigue performance of the shaft body meets the standard.

After the Darong axle is formed, it also needs to undergo fatigue test to fully simulate the load-bearing working condition of the axle. Generally, it needs to be done for at least 30 hours, about one million times, mainly to test whether the fatigue performance of the axle can meet the standard requirements. After reaching the standard, it can enter the final assembly link.

In addition to reliable quality, another reason why Darong axle is popular with car owners is its ultra-high cost performance. Now the axles on the market are too expensive for good ones and difficult to use for cheap ones. Darong axle is unique. In the past 20 years since entering the market, Darong has never relied on quality to start the price. It has always insisted on giving back to new and old customers with the most reasonable price, "being a real man and doing things honestly", and has established good and stable cooperative relations with many Trailer factories, logistics companies, transportation fleets and retail investors.