Standard: | DIN |
---|---|
Technics: | Casting |
Material: | Metal |
Base Material: | 38crmoaia/42crmoaia/W302 |
Surface Treatment: | Nitrided Treatment |
Depth of Nitrided Layer: | 0.6-0.9 mm |
Customization: |
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Suppliers with verified business licenses
Product Name
|
Melt blown fabric screw and barrel for masks
screw and barrel manufacturer
|
Base Material (steel)
|
38 CrMoAlA(JIS SACM645); 42 CrMo(AISI 4140);
Cr12MoV(JIS SKD-11); 4Cr5MoSiV1(JIS SKD-61)
|
Process ( hot treatment)
|
Nitriding treatment 72 hours
Bimetallic treatment
|
Hardness after hardening and tempering
|
HB260-320
|
Nitrided Hardness
|
HV900-1000
|
Nitrided Case Depth
|
0.5 - 0.8 mm
|
Nitrided Brittleness
|
Less than Grade 2
|
Surface Roughness
|
Ra 0.4
|
Screw Straightness
|
0.015 mm
|
Bimetallic Hardness
|
HRC 53-65
|
Bimetallic Depth
|
0.8-2.0mm for screw ; 1~3mm for barrel
|
Chromium plating Depth
|
0.05~0.10mm
|
Hardess of surface chromium-plating after Nitriding
|
HV≥950HV
|
***Grade available:
1. Standard grade: 38CrMoAlA + nitriding 96 hours
2. Bimetallic grade: 38CrMoAlA + bimetallic alloy
3. TC-A grade: Tungsten carbide 35%
4. TC-B grade: Tungsten carbide 25%
5. TC-C grade: Tungsten carbide 15%
Material
1)38CrMoALA(JIS SACM645)
2)42CrMo(JIS SCM440)
3)9Cr18MoV
4)CW6Mo5Cr4V2
5)Various high quality alloy steels,According to different usage, the choose for alloy is different, some require for abrasion-resistant while some require for corrsion-resistant. For standard, we have Fe-based, Ni-based,W2Calloy,Tunsten alloy etc for choice.
6)The foreign material we used as following:
*Germanysteel, GH113 ,2250 ,2842 ,1.8509 ,1.442 ,1.6582 ,1.6523 ,1.2080,1.4542,
*USA steel, P20,420,L6,H13,W110,D3,A2,D6,O1,S1,M35,8620,3115,K52440
*Sweden steel, 718S,718H,S136,S136H,STAVAX,ASP-23,ASP-30
*Australia Steel, M202,M300,W302,K460,W300,K900,K100,W321
*Hardness steel, YG6X,YG 6A,YG 6,YG8N,YG8,YG8C,YG11C,YG 15,YT5,YT14,YT30
*Japan Steel, SKT 4,YXM 4,YXM 42,SNC 815,SK -3,SKS 3,and etc.
***Application:
Rubber,various high glass fiber, mineral fiber and PPA,PPS, PA66, LCP,VO fire protection, ferrous power, magnetic powder and etc.Suppliers with verified business licenses