Excavator Undercarriage Parts PC400 Track Roller For KOMARSU?>
Product origin :Quanzhou Fujian China
Delivery time :30days
Supply capacity :20000pcs
Wheel: Forged by 50Mn2 round steel material with good hardenability;Heat treatment process + medium frequency quenching.Surface hardness achievable HRC55-60, hardened layer depth up to 6-8mm, ensuring it's strength and durable.
Center shaft: 50Mn2 round steel material, medium frequency surface quenching heat treatment + quenching and tempering process, surface hardness HRC55/60, hardened layer depth up to 3-5mm, has excellent mechanical properties.
Floating oil seal: high Chromium and Molybdenum alloy,hardness HRC65-72,working bright strip has roughness 0.1um-0.2um.
O-ring: It's made of butadiene with acrylonitrile and butadiene rubber copolymerized.
Features: It has better oil resistance and high temperature resistance.
|Products Type||Track roller|
|Place of Production||Quanzhou Fujian China|
|Use||Excavator, Bulldozer, ect|
|Technology||Forging Casting/Smooth Finish|
|Color||Commonly use color, Customized|
The material of the PC400 track roller is 40Mn2, which is a medium carbon alloy steel. The shape of the part is characterized by a high hub with deep holes and flanges, a large diameter difference in the shape of the part, a thinner wall thickness, and more difficult metal activities. Based on the characteristics of the existing equipment, it was decided to adopt an open and detailed hot die forging method to reduce the deformation resistance. According to the layout and precision forging process characteristics of the roller, it is sure that the outer and outer surfaces of the wheel body are indirectly precision forged and no machining allowance is left. Only a small amount of machining allowance is left in the inner hole, so that the material utilization and production efficiency Obvious progress has been made.
PC400 track roller technology process
1, bar material feeding. Raw materials should be loaded with active feeders, which increases the labor intensity of the staff.
2, the bar medium frequency feels heated. The heating temperature is controlled at (1200 ± 30) ° C. The furnace mouth is equipped with an infrared temperature measurement installation and a temperature three-sorting mechanism.
3, PSH4450 electric screw press casting. Three working steps are arranged on the press, namely upsetting, pre-forging and final forging. The upsetting process of the bar material is heavy. If the oxide scale on the outside of the bar material is removed, it is upset to a suitable height and can be accurately positioned in the pre-forging cavity. The plan of the pre-forged cavity in the wheel forging process is extremely important. Its important role is to realize the pre-forming of the wheel body, which takes about 60% of the deformation, reduces the wear of the final forging cavity, and significantly improves the final forging die. Application life. The final forging die plays the role of rear forming. The cavity draft angle at the tread is planned to be 1 °, and the upper and lower ejection mechanisms must be provided on the die to smooth the demolding and final forging process. Due to the inferior casting work condition, the robot adopts active spraying for smooth cooling.
4, 400t crank press for trimming and punching. The composite mold is used to realize trimming and punching at one time. The upper die discharge adopts a disc spring and the lower ejection adopts a hydraulic type, which facilitates the robot to accurately grasp the forging. This has greatly improved production efficiency, reduced the number of equipment and molds and control staff, reduced production costs, and ensured the quality of forgings.