Bimetallic Conical Twin Screw Barrel for PVC Pipe Extruder

• Standard: GB
• Technics: Forging
• Feature: Extrusion
• Material: Bimetallic
• Materials: Bimetallic
• Conical Screw and Barrel: Sjz51/65/80/92
• Model NO.: SJZ
• Nitriding Layer Depth: 0.5-0.8mm
• Nitrided Hardness: 900-1000hv
• Bimetallic Layer Depth: 3 mm
• Bimetallic Hardness: 57~69HRC
• Chrome Plating Layer Depth: 0.03-0.09mm
• Surface Roughness: Ra 0.4
• Linearity of Screw: 0.015mm
• Warranty: 3 Months
• Transport Package: Wooden Case
• Specification: SJZ
• Trademark: chenxing
• Origin: Zhangjiagang of China
• HS Code: 84779000
• Production Capacity: 3000sets/Year

Product Description

Technical Parameter:
Material: High Quality Of Alloy Steel
1. 38CrMoALA(JIS SACM645)
2. 42CMo(JIS SCM440)
3. 9Cr18MOV
4. CW6Mo5Cr4V2

Products Are Processed By The Following Steps:
Hot Treatment
Nitriding Treatment
Electroplating Hard-chrome layer
Hi-frequency Quenching
Spray Coating Bimetallic Layer Of Corrosion And Abrasion Resistant
Vacuum Quenching

Compressing rate of screw can be designed according to different raw material and products.

echnical Information for Extruder Conical Screw and Barrel
Main Base materials	1.38CrMoAlA (SACM645)	Main Alloy Materials	1. Ni-based alloy/Deloro alloy
	2. SKD-61 (Special Tool Steel)		2. Tungsten carbide/Wolfram carbide
	3. 42CrMo (Ultrahigh StrengthSteel)		3. NiCo-based alloy
	4. DC53 (Cold WorkDie Steel)		4. Fe-based alloy
	5. W6Mo5Cr4V2 (High-SpeedToolSteel)		5. Co-based alloy
Processing Technics	1. Heat treatment	Technical parameters	Nitriding layer depth:0.5-0.8mm
	2. Quenching		Nitrided hardness:900-1000HV
	3. Nitriding treatment		Bimetallic layer depth:3 mm
	4. Bimetallic alloy welding for screw		Bimetallic hardness:57~69HRC
	5. Bimetallic alloy centrifugal casting for barrel		Hard-chrome plating hardness after nitriding:≥950HV
	6. Hard-chrome electroplating		Chrome-plating layer depth:0.03-0.09mm
	Linearity of screw:0.015mm		Surface roughness:Ra 0.4