Product | KMD Parallel Twin Screw And Barrel |
Hardness after hardening and tempering | HB260°~320° |
Nitrided Hardness | HV950°~1000° |
Nitrided Depth | 0.50~0.7mm |
Nitrided Brittleness | above 2 stage |
Surface Roughness | Ra0.4 |
Screw straightness | 0.015mm |
Hardess of surface chromium-plating afterNitriding | HV≥950HV |
Chromium-plating Depth | 0.05~0.10mm |
ALLoy Depth | 0.8~2.0mm |
Alloy hardness | HRC56°~65° |
Alloy | iron,nickel,tungsten,molybdenum |
Types of screw | Gradual type,mutant type,wave type,barriertype,double screen type,shunt type,separation type,exhaust type,pintype,mixed type,double-head type,three-head type,multi head type etc. |
Scope of Application : WPC PVC.WPC PE,Super high molecular sheet,1/2 high Calcium buckle,50-400 high Calcium pipe,50-300 high Calcium Profile,soft PVC sheet,XPS –PVCetc.PP,PE,ABS,PVC,raw material ,pelletzing,pipe,profile,sheet etc.