Conical Bimetallic Twin barrel from China manufacturer - Zhoushan Vanscrew Machinery Co.,Ltd.

Product Detail

Model No.: CT-80

Production Capacity: 300sets/month

Delivery Date: 30days

Hardness After Hardening &Tempering: HB240 -280

Nitrided Depth: 0.45-0.7mm

Surface Roughness: Ra0.4

Means of Transport: Ocean,Land

Packing: wooden case

Brand Name: Vanscrew

Nitrided Hardness: Hv850-1000

Nitrided Brittleness: ≤Grade 2

Screw straightness: 0.015mm

Easy wearing parts of barrel made from anti-wear alloy can be improved abrasion performance.

Conical twin screw barrel

Material

Alloy-Steel of High-quality

1)38CrMoALA(JIS SACM645)

2)42CrMo(JIS SCM440)

3)9Cr18MoV

4)CW6Mo5Cr4V2

Heat-treatment

Nitriding treatment

Electroplated hard-chrome finish

High-frequency quenching

Spray coating Bimetallic-alloy

Vacuum quenching
Easy wearing parts of barrel made from anti-wear alloy can be improved abrasion performance.

Technical data

Hardness After Hardening &Tempering:	HB240 -280
Nitrided Hardness:	Hv850-1000
Nitrided Depth:	0.45-0.7mm
Nitrided Brittleness:	≤Grade 2
Surface Roughness:	Ra0.4
Screw straightness:	0.015mm
Surface Chromate-plating's Hardness After Nitrided:	≥900Hv
Chromate-plating Depth:	0.05-0.10mm
Bimetallic-alloy Hardness:	HRC56 -65
Alloy Depth:	0.8-2.0mm

Type of conical twin screw barrel