Excavator Undercarriage Parts EX400 Sprocket For HITACHI?>
Product origin :Quanzhou Fujian China
Delivery time :30days
Supply capacity :20000pcs
EX400 sprocket drive has extremely high speed and low noise. In chain transmission, the processing accuracy and installation accuracy of chain and stainless steel sprocket and the accuracy of center distance are lower than the requirements of gears. It is easier to change the parameters (transmission ratio, center distance, etc.) of the existing chain transmission to achieve simple installation and maintenance.
|Products Type||EX400 Sprocket|
|Place of Production||Quanzhou Fujian China|
|Use||Excavator, Bulldozer, ect|
|Technology||Forging Casting/Smooth Finish|
|Color||Commonly use color, Customized|
Sprocket quenching process
1. Working characteristics: induction heating quenching with longitudinal and transverse composite magnetic field; high heating efficiency and fast speed, only 6 seconds / piece; uniform hardness distribution of the hardened layer; low power consumption; consistent edge of the tooth surface and the middle part; teeth The root hardened layer can be precisely controlled; the amount of deformation is small.
2. Working principle: Connect the high-frequency power supply, the electric contact and the inductor are connected into a loop, and the sample above the inductor becomes the heated body to be induced. In this way, the surface of the workpiece is not only heated by the longitudinal magnetic field, but also by the transverse magnetic field, so as to achieve the purpose of uniform heating. Changing different sensors can heat different shapes of workpiece surface. Compared with traditional high-frequency heating, the heating current on the surface of the workpiece is more concentrated, the density is higher, and the heating speed is faster. In this way, the power density of heating the surface of the workpiece is several times that of traditional induction heating, and the workpiece surface can be subjected to high-efficiency and high-quality heat treatment.
3. Precision sprocket quenching process: placed on the inductor, the cylinder is lowered, the sprocket is pressed, the induction electrode, the sprocket and the inductor are connected, and the distance between the inductor and the sprocket can be adjusted as required. The induced current generated by the combination of the vertical and horizontal magnetic fields simultaneously heats the tooth surface. The heating speed is very fast. The heating time is controlled. After reaching the temperature, the equipment stops heating and automatically sprays a quenching liquid on the tooth surface to complete a quenching process.
Lubrication method of sprocket
Lubrication plays a decisive role in the normal operation and service life of the sprocket transmission. Lubricants play various functions such as lubrication and cooling in the sprocket transmission, ensuring the normal operation of the sprocket at a certain working temperature, and prolonging the service life of the sprocket.
The sprocket has the following lubrication methods:
Elastic fluid lubrication: Due to the existence of a certain strength elastic flow lubricant between the two gear surfaces, the meshing surfaces are completely separated, so that the moving friction between the two friction surfaces becomes the internal friction of the fluid, and the heat generated by the movement is taken away in time. It can withstand a certain load at the speed to achieve the normal operation of the sprocket, which is the most ideal lubrication state.
Boundary lubrication: The oil film is separated on the meshing tooth surfaces. The oil film formed between the meshing tooth surfaces is not strong enough, has poor fluidity, and is not sufficient to maintain stable elastic fluid lubrication. It mainly depends on a layer of chemical reaction formed by the lubricant additives on the metal surface. Film and physical adsorption film to provide lubrication. Gears under the boundary lubrication state have extremely limited capacity of load, speed, temperature and time. They are extremely prone to wear and tear, causing the sprocket to fail.
Hybrid lubrication: a condition that often occurs in gear transmission. The elastic film of the remaining body between the tooth surfaces of the gear teeth is mainly used for dynamic lubrication, and boundary lubrication and dry friction are also present.
Gear processing: The key to sprocket processing is tooth surface processing, such as tool cutting and grinding wheel grinding. It is a process of using mechanical methods to obtain the specific structure and accuracy of the sprocket. According to the processing principle, it can be divided into two major types: the forming method and the forming method.