Flim blowing screw barrel
Usage:
This screw is suitable to blowing the plastic films like low density polyethylene (LDPE), high density polyethylene(HDPE) and linear low density polyethylene(LLDPE). It is widely applied to producing the packing bags for foodstuff, clothing, rubbish bag and vest ones.
Its extruder, cylinder and screw rods are made of quality alloy steel that have been nitrized and processed in a precision way. Hence it is sound in hardness, durable in corrosion resistance. The specially-designed screw is of sound quality in plasticizing, which helps increase the productino capacity. No matter what size the film is, big or small, it can achieve the best effect of cooling. It adopts independent moment to collect, the effect will be better if fit with rotate die.
The Material of screw&barrel avaliable
Normal Material we use as following:
1.38CrMoAlA(JIS SACM645),
2.Cr12MOV(JIS SKD-11)
3.4Cr5MoSiV1(JIS SKD-61)
4.42CrMo(AISI 4140)
The foreign material we used as following:
1. Germanysteel, GH113 ,2250 ,2842 ,1.8509 ,1.442 ,1.6582 ,1.6523 ,1.2080,1.4542,
2. USA steel, P20,420,L6,H13,W110,D3,A2,D6,O1,S1,M35,8620,3115,K52440
3. Sweden steel, 718S,718H,S136,S136H,STAVAX,ASP-23,ASP-30
4. Australia Steel, M202,M300,W302,K460,W300,K900,K100,W321
5. Hardnesssteel, YG6X,YG 6A,YG 6,YG8N,YG8,YG8C,YG11C,YG 15,YT5,YT14,YT30
6. Japan Steel, SKT 4,YXM 4,YXM 42,SNC 815,SK -3,SKS 3,and etc.
Screw barrel treatment:
Nitrided
Nitrided+chromium-plating
Bimetallic
Bimetallic+chromium-plating
QY-Grade A - containing Tungsten of 40%
QY-Grade B - containing tungsten of 25%
QY-Grade C - containing tungsten of 9.5%
QY-Grade A/B/C + chromium-plating
Technical parmeter
Nitride Case Depth | 0.5mm-0.8mm |
Nitride Hardness | 950-1150HV |
Nitride Brittleness | ≤Grade One |
Surface Roughness | Ra0.4um |
Screw Straightness | 0.015mm |
Alloy Hardness | HRC58-75 |
Bimetallic Thickness | 2-4mm |
Thickness of chromium | 0.15-0.2mm |
Product Show:
Keywords:flim blowing screw barrel
