Excavator Undercarriage Parts PC20 PC30 PC40 Sprocket For HITACHI?>
Product origin :Quanzhou Fujian China
Delivery time :30days
Supply capacity :20000pcs
After the standard heat treatment of the drive wheel blank of our sprocket, the hardness of the substrate reaches above HB235, and the drive teeth are subjected to medium frequency induction hardening and low temperature tempering. The surface hardness can reach HRC48-54, and the hardening depth is higher than 5-10mm (HRC45). It not only provides accurate power under harsh working conditions, but also has excellent wear resistance and has the effect of extending product life and reducing customer costs.
|Place of Production||Quanzhou Fujian China|
|Use||Excavator, Bulldozer, ect|
|Technology||Forging Casting/Smooth Finish|
|Color||Commonly use color, Customized|
Processing technology of sprocket
Sprocket blank machining, tooth surface machining, heat treatment process and tooth surface finishing.
1. The rough parts of the sprocket are mainly forgings, bars or castings, among which forgings are widely used. The blank is first normalized to improve its cutting process and easy to cut; then roughing is performed. According to the design requirements of the sprocket, the blank is first processed into a rough shape and a surplus is retained;
2. Carry out semi-precision machining, turning, rolling, and inserting teeth to basically shape the sprocket; then heat treat the sprocket to improve the mechanical properties of the sprocket. According to the requirements of use and the materials used, there are quenching and tempering Quenching, high-frequency induction heating quenching of tooth surface, etc .; After that, the sprocket is finished, the reference is finished, and the tooth shape is finished.
Method to determine whether the sprocket is invalid:
1, tooth surface wear. Under normal circumstances, only when the abrasive particles are mixed in the lubricating oil, the wear of the tooth surface abrasive particles will be caused during operation.
2, tooth surface glued. Once the lubrication conditions are poor, the oil film between the tooth surfaces will disappear, causing the metal surfaces of the two teeth to directly contact each other, thereby causing mutual bonding. When the two tooth surfaces continue to move relative to each other, the harder tooth surface tears out part of the material on the softer tooth surface in the sliding direction to form a groove.
3, fatigue pitting. Under the action of alternating contact stress on the tooth surface for a long time, small cracks will appear at the cutter marks on the tooth surface. Over time, this crack gradually expands laterally in the surface layer. After the crack forms a ring, the The surface has a small area of spalling and some fatigue shallow pits are formed.
4, Gear teeth are broken. A sprocket that bears a load during operation is like a cantilever beam. When the periodic periodic stress on the root exceeds the fatigue limit of the sprocket material, a crack will be generated at the root and gradually expand. When the remaining part cannot bear the transmission load, Broken teeth will occur. Sprockets can also cause broken teeth due to severe impacts, eccentric loads and uneven materials during work.