Material:38CrMoALA
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 after Nitriding:HV≥950HV
Chromium-plating Depth:0.05~0.10mm
ALLoy Depth:0.8~2.0mm
Alloy hardness:HRC56°~65°
Alloy:nickel,tungsten,molybdenum
 
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Fax:+86-0580-8051690
E-mail:screw@zszhongsu.com
Add:c-no.7 xihou industrual agglomeration,jintang town,dinghai district,zhoushan city,zhejiang province
Home > Universal Screw >> Extruder Screw Barrel

process specification of screw and barrel:
specification:Ф15-Ф360MM
The ratio of length to diameter:L/D=12-45

Screw material(click material applicaton and Mechanical properties for details)

raw material: The finished product Processing requirements:
38CrMoAlA,SACM645,42CrMo Nitriding treatment
42CrMo,AISI 4140 Hard chrome coated layer
Cr12MoV,SKD11,SKD61,YXMI,EFZD,DC53,SKH55,SKH59,SKH58,SKH51,SKH—¬9,ASP60,ASP30,ASP25,CW6Mo5Cr4V2 Alloy steel
4Cr5MoSiV1,SKD-61,SKD-11 Spraying bimetal alloy layer and nitrding treatment
YPT72,DAC-MAGIC,4 Cr5MoSiV1 Whole bimetallic cladding stainless steel
HPM38,SI36,SUS440,9Cr18MoV High frequency quenching
GHII3 Airset after high temperature

barrel material(click material applicaton and Mechanical properties for details)

raw material: The finished product processing requirements:
38CrMoAlA,SACM645 Nitriding treatment
Cr12MoV,Cr12 Alloy steel
38CrMoAlA,SACM645,40Cr,AISI4140,42CrMo Bimetallic of the inner hole centrifugal casting
GHII3 Airset after high temperature

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