Casting is the overall casting of the material in the mold, its stress distribution is uniform, and there is no restriction on the direction of compression. The forging is made by the same direction of force, its internal stress is directional, and can only withstand directional pressure. Castings and forgings of the same material and wall thickness are superior to castings in terms of strength and crystal phase structure.

A semi-trailer is a trailer in which the axles are placed behind the center of gravity of the vehicle and are equipped with combined equipment that can transmit horizontal and vertical forces to the tractor.

In order to ensure the leading quality of trailer mandrels, the company seeks development with integrity and coexistence with quality. Jianxin Machinery Manufacturing Co., Ltd. strictly abides by the ISO9001: 2000 quality management certification for manufacturing, perfect quality management system, first-class technical process, and all-round quality assurance. Today, our company's trailer mandrels lead the market in sales.

Forging is a processing method that uses a forging machine to apply pressure to a metal blank to plastically deform it to obtain a forging with certain mechanical properties, certain shape and size, and is one of the two major components of forging (forging and stamping).

In the process of machining, transportation, storage, etc., the surface of the machined workpiece is often covered with oxide scale, rust molding sand, welding slag dust, oil and other dirt. In order to make the deep layer firmly adhere to the surface of the workpiece, the surface of the workpiece must be cleaned before painting. Otherwise, it will not only affect the bonding force and corrosion resistance of the coating and the base metal, but also make the base metal even in the It can continue to corrode under the protection of the coating, so that the coating peels off and affects the mechanical properties and service life of the workpiece.

During lathe processing, the centripetal force is usually used to clamp the parts with the three-jaw or four-jaw chuck of the lathe, and then the mechanical parts are processed.

The focus of purely basic level consideration is how to reduce errors and improve accuracy, so the basic principles for selecting essential surfaces are:

For the technical specification of mechanical processing, the technicians determine the technical process to be adopted according to the quantity of products, equipment conditions and the quality of workers, and write the relevant content into a technical document, which is called a technical specification.

According to different equipment, die forging is divided into hammer die forging, crank press die forging, flat forging machine die forging, friction press die forging, etc. The equipment used for die forging on the hammer is a die forging hammer, usually an air die forging hammer. For forgings with complex shapes, they are initially formed in the billet die cavity, and then forged in the forging die cavity.

The process of forging and forming a metal blank with a forging die on a die forging hammer or press. The die forging process has high production efficiency, low labor intensity, accurate size, small machining allowance, and can forge forgings with complex shapes;