Tempering hardness |
HB260-290 |
Nitrided Hardness |
HV950-1050 |
Nitrided Depth |
0.4-0.7mm |
Nitrided Brittleness |
Less than Grade 1 |
Surface Roughness |
Ra0.4 |
Screw Straightness |
0.015mm |
Chromium plating layer hardness after nitriding |
HV≥950HV |
Chromeplate Thickness |
0.05-0.10mm |
Alloy hardness |
HRC56-65 |
Alloy Depth |
2.0-3.0mm |
raw material |
The finished product processing equipments |
38CrMoAIA, SACM645, 42CrMo |
Nitriding treatment |
42CrMo, AISI4140 |
Hard chrome coated layer |
42Cr5MoSiV1, SKD61, SKD11 |
Spraying bimetal alloy layer and nitriding treatment |
HPM38, SI36, SKD61, SKD11 |
High frequency quenching |
GHII3 |
Nature hard after high temperature |
Product classification:
According to different raw materials and products, the screw can be chosen: general type, pin type, barrier type, separation type, and vented type, pipe, sheet, blowing film, wire drawing and Granulating etc.
Single screw extrusion screw barrel can be applied to PP, PE, PS, ABS, PC, PMMA, PVC, TPU and other thermoplastic pipe, sheet, sheet bar, profile and so on. For different raw materials and product specifications, the screw uses different aspect ratio and compression ratio, the barrel uses a different structure. To meet the processing needs of high-quality products.