Panetary screws barrel, bimetallic screw barrel, extrusion screw barrel, plastic machinery components
Technical Information
Base Materials:
(1)38CrMoAlA(JIS SACM645)
(2)42CrMo(AISI 4140)
Bimetallic alloy materials:
(1)Fe-based alloy
(2)Ni-based alloy/Deloro alloy
(3)Co-based alloy
(4)NiCo-based alloy
(5)Tungsten carbide/Wolfram carbide
Technics:
Heat treatment
Plasma nitriding
Technical parameter:
Nitrided layer depth: 0.3-0.7mm
Nitrided hardness: HRC58-60
Nitrided brittleness: Less than grade 1
Surface roughness: Ra0.4
Linearity of screw: 0.015mm
Warranty and service: 1 year
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| Product |
bi-metal planetary extruder screw and barrel |
| Hardness after hardening and tempering |
HB260°~ |
| Nitrided Hardness |
HV950°~1000° |
| Nitrided Depth |
0.5 0~0.7mm |
| Nitrided Brittleness |
above 2 stage |
| Surface Roughness |
Ra0.4 |
| Screw straightness |
0.015mm |
| Hardess of surface chromium-plating after Nitriding |
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,barrier type,double screen type,shunt type,separation type,exhaust type,pin type,mixed type,double-head type,three-head type,multi head type etc. |
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