The bobbin is a key part of Covering Machine. It is used for winding the chemical fiber such as POY, DTY, FDT, nylon and cotton yarn..
super hard Aluminum Bobbin series is produced of super strong aluminum through precise turning and make balance at high spindle speed.
Aluminum Bobbin For Yarn Covering Machine Aluminum Bobbin For Yarn,Aluminum Bobbin Xinchang Jinxing Machinery , http://www.xcjinxing.com
Extrusion Screw barrel, plastic machinery screw barrel, PP/PE sheet/film extrusion screw barrel, extruder screw barrel, Bimetallic Screw Barrel
Specification:
Screw Diameter: Ø 15mm- Ø 300mm
L/D ratio: 15-46
Product classification:
Aiming at different plastic products the screw can be chosen from: General type, pin type, barrier type, separation type, and gas-exhausting type, etc.
Technical Information
Base Materials:
1)38CrMoAlA(JIS SACM645)
Bimetallic alloy materials:
1)Fe-based alloy
2)Ni-based alloy
3)Tungsten carbide/Wolfram carbide
Technics:
Heat treatment
Nitriding treatment
Bimetallic alloy welding
Bimetallic alloy centrifugal casting
Technical parameter:
Nitrided layer depth: 0.5-0.8mm
Nitrided hardness: 900-1000HV
Nitrided brittleness: Less than grade 1
Surface roughness: Ra0.4
Linearity of screw: 0.015mm
Bimetallic layer depth: 3mm
Warranty and service: 1 year
Our advantages:
1)Excellent raw materials
2)Good customer service
3)Rapid delivery
4)Reasonable price
5)Production quickly
Experienced manufacturer, we will be the best choice.
 Technical parameter:
 Nitrided layer depth:
 0.5-0.8mm
 Nitrided hardness:
 900-1000HV
 Nitrided brittleness:
 Less than grade 1
 Surface roughness:
 Ra0.4
 Linearity of screw:
  0.015mm
 Hard-chrome plating hardness after nitriding:
  ≥ 950HV
 Chrome-plating layer depth:
 0.025-0.085mm
 Bimetallic layer depth:
 3mm