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38CrMoAlA Twin And Single Conical Screw Barrel For Recycling Machine

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38CrMoAlA Twin And Single Conical Screw Barrel For Recycling Machine

Country/Region	china
City & Province	jiangsu

Product Details

38CrMoAlA Twin Screw Barrel And Sngle Screw Barrel For Recycling Machine

1 . Description
Our various type extruder conical twin screw barrel for different plastic raw material /domestic/foreign brand extruder machines.We also supply for domestic plastic machinery company.

Screw diameter:Φ15mm-Φ360mmL/D=15-56

Length of screw and barrel/cylinder:8000mm

According to different material and plastic products to design different screw structure ,compress rate and L/D.
According to different material and plastic products to design different Barrel with exhaust system and IKV force load system.

2 . Production Flow

Material cutting→peeling→hardening and tempering→rough turning→qualitative→semi fine turning→qualitative→nature stabilizing grinding→grinding→nitrogenization→lapping finish→CNC thread lathing→polishing till realize end product

3 . Technical Parameter

Base Material	1)38CrMoAlA(JIS SACM645);2)Cr12MOV(JISSKD-11) ; 3)4Cr5MoSiV1(JIS SKD-61) ;4)42CrMo(AISI4140)
Bimetallic Alloy Materials	1)Fe-based alloy2)Ni-based alloy/Deloroalloy 3)Co-based alloy4)NiCo-based alloy 5)Tungsten carbide/Wolframcarbide
Double-alloylevel	Level A - containing Tungsten of40% Level B - containing tungsten of 25% Level C - containing tungsten of15%
Surface Treatment	Heat Treatment High FrequencyTreatment Nitriding treatment(120Hours): Depth of Nitrided Layer: 0.5-0.8mm Hardness of Nitrided Layer: 900-1020Hv(HRC56°-65°) HardChrome Plating treatment: Thickness of Hard Chrome Plating Layer:0.05-0.10mm Hardness ofHard Chrome Plating Layer: ≥950HV Nickel alloyplating.treatment: Bimetallic barrel / Cylinder: Centrifugal Casting(Inlay Alloy) BimetallicScrew: Plasma Alloy Coating Spraying Depth of Bimetallic Layer: >2mm Hardness of Bimetallic Layer: HRC55°-72° Spraying corrosion wear-resisting dual metallayers

4 . Materials

Screw and barrel materials used 38CrMoALA steel,the quenching and tempering,qualitative, nitrogen,a polishing process,refined,with long life,wear resistance,good corrosion resistance,etc.,it can be used to replace foreign advanced equipment and Equipment domestic high-performance devices.

Specifications: Φ20mm- Φ300mm
Aspect ratio: L / D = 15-65
Materials and Technology:

1. 38CrMoALA nitriding treatment

Nitriding depth: 0.5-0.8mm, nitriding hardness: HV > 920

2. 42CrMo plating: high frequency quenching + plating/bimetal PTA+ plating

Chromium plating hardness: greater than or equal to HV800, thickness 0.03-0.05mm, roughness Ra0.2um

3. SKD61 conditioning, vacuum quenching and integral hardening treatment

Hardness index: HRC > 55-58, straightness 0.015mm/m, roughness ra0.4um

4. 9Cr18Mov vacuum quenching, CNC circular grinding

Hardness index: HRC > 50-55, straightness 0.015mm/m, roughness ra0.4um

5. hard chromium plating Specifications:
Chrome plating thickness: 0.05-0.10mm, chrome layer hardness: HV≥960

38CrMoAlA twin screw barrel and single screw barrel for recycling machine