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°
Add:c-no.7 xihou industrual agglomeration,jintang town,dinghai district,zhoushan city,zhejiang province
Home > Universal Screw >> Stainless Steel Screw

Process Specifications of screw and barrel:
25-38000KN clamping force
30g-50000g injection unit

Types of screw:
[For good plasticizing effect,we have different design of screw barrel to meet customer’s demand]
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.

The material of Screw:
Nitrided treatment,Surface hardness:HV≥900
Nitrided Depth:0.5~0.8mm
2. Material:special alloy steel
After vacuum hardening heat treatment process,can greatly improve the service life of the three small pieces.
3.Material:the surface tungsten carbide ultra-sound overall spray to improve the wearresistance of the screw.

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

Raw material:ASSAB,SAARS TAHL SEE,BOHLER,HITACHI,KOSHUHA,Datong,THYSSENKRUPP,FNKL,etc The finished product processing requirments
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 high frequency quenching
4Cr5MoSiV1,SKD-61,SKD-11 Sparying bimetal alloy layer and nitriding treatment
YPT72,DAC-MAGIC,4 Cr5MoSiV1 Whole bimetallic cladding stainless steel
HPM38,SI36,SUS440,9Cr18MoV High frequency quenching
GHII3,GH132/GH2132/A-286;GH145/InconelX-750;GH143;GH169/Inconel718;GH3030;GH5K GH113 New high temperature alloy,300-400 degree.Airset in high temperature

The material of barrel:

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,GH132/GH2132/A-286;GH145/InconelX-750;GH143;GH169/Inconel718;GH3030;GH5K 【GH113 New】high temperature alloy,300-400degree.Airset in high temperature

specification parameter:

Amount of injecton(g) Screw diameterXlength(mm) Barrel diameterXlength(mm) Amount of injection(g) Screw diameterXlength(mm) DiameterXlength(mm)
30-90 Φ30x90 Φ85x860 800-1250 Φ75x1825 Φ170x1725
60-125 Φ35x910 Φ85x860 1000-1500 Φ80x2000 Φ180x1805
100-150 Φ38x935 Φ95x900 1250-2000 Φ85x2300 Φ190x1900
125-160 Φ40x980 Φ95x910 2000-3000 Φ90x2700 Φ210x2000
125-300 Φ42x1030 Φ105x8880 2500-5000 Φ100x2600 Φ230x2405
250-400 Φ45x1210 Φ115x1165 3000-6000 Φ110x2600 Φ256x2590
300-500 Φ50x1300 Φ125x1260 4000-10000 Φ120x2800 Φ256x2800
450-600 Φ55x1335 Φ130x1320 6000-8000 Φ130x3010 Φ256x2970
500-700 Φ56x1350 Φ130x1350 8000-10000 Φ145x3010 Φ256x3200
500-700 Φ60x1380 Φ140x1350 10000-15000 Φ160x3500 Φ270x3200
650-800 Φ65x1415 Φ150x1420 13000-25000 Φ170x3415 Φ317x3380
700-1000 Φ70x1790 Φ160x1685


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