Product Details

bimetallic twin screw barrel for twin screw extruder supplier

we are manufacturer of twin screw extruder, also can supply all the spare parts.

like screw, barrel, feeder,die head electric controller and gearbox.

Description:

The flexible modular principle is realized with screw barrel sections from the wide
range ofdifferent designs possible. Fast, intensive and uniform heating ofthe screw
barrel section is ensured by electrical heaters. The barrel sections are cooled with
water, by means ofan internal bore system, with bores arranged close to the inside
barrel wall.

Base Material	1) 38CrMoAlA(JIS SACM645) 2)Cr12MOV(JIS SKD-11) 3) 4Cr5MoSiV1(JIS SKD-61) 4) 42CrMo(AISI 4140)
Bimetallic Alloy Material	1)Fe-based alloy 2)Ni-based alloy/Deloro alloy 3)Co-based alloy 4)NiCo-based alloy 5)Tungsten carbide/Wolfram carbide
Surface Treatment
1.Heat treatment		2.High frequency treatment
3.Nitriding treatment		Nitrided case depth: 0.50-0.80mm
		Nitrided hardness: HV850-1020 (HRC57-65)
4.Hard chrome plating treatment		Chromium-plating layer depth: 0.05-0.10mm
		Chromium-plating layer hardness: more than 950HV
5Nickel alloy plating treatment		Bimetallic barrel: centrifugal casting (Inlay alloy)
		Bimetallic screw: plasma alloy coating spraying
		Bimetallic layer depth: 0.8-2.0mm
		Bimetallic layer hardness: HRC 57-72
Basic Information
Nitride Brittleness			≤Grade Two
Surface Roughness			Ra0.4um
Screw Straightness			0.015mm
Hardness after hardening and tempering			0.025~0.10mm
Material Application			1)General plastics
			2)ABS,PA,PC,PE,PET,PS,PU,PVC,U-PVC
			3) PA+GF (Glass Fiber)
			4)Flame-resistant reinforced plastics
			5)Modified engineering plastics
			6)All kinds of mixed recycled materials
General Terms			Means of transport: Ocean, Air, Express
			Production time: 20-25 days after order

Barrel sections are available as:
Closed barrel section
Barrel section with opening for material feed or for devolatilization
The processing section is provided with stainless steel plates as a protection against
accidental contact.
Screw Elements: High-speed steel W6Mo5Cr4V2,nitrogen treatment.
Screw Shaft: High performance alloy steels,40CrNiMoA; with standing high load,Etc
Description
The inter meshing screws co-rotate and wipe each other with narrow clearance so that
no residues are left in the screw flight and clean effort is thus reduce.
Screw elements with various pitches and lengths
Kneading blocks with various angles ofstagger, numbers ofkneading disks and disk
widths.
Screw tips to fix the screw set axially
Gear teeth connection to ensure power flow between the screw shaft and screw
elements.

2.Reducing and distributing gearbox
(include shaft coupling)
1 set TSE-75
The gearbox reduces the motor speed to the speed ofthe screw shafts and
distributes it to the two output shafts. Screw torque is 1050 N.m per shaft
The gearbox consists of:
Involute gear teeth couplings between the output shafts and screw shafts
Integrated thrust bearing assembly, radial bearings ofthe output axis are NSK products
Bottom part ofcasing designed as oil sump