Specifications

1. Factory direct
2. ISO 9001:2008 approved
3. High quality material, good production experience
4. Design screw and barrel

  bimetallic rubber machine screw and barrel/  screw  barrel

 

 

Specification:

 

Diameter of pin screw and barrel:D75mm-D200mm

Diameter of cold feed or hot feed screw and barrel:D30mm-D300mm

L/D ratio :12-18

 

Technical Information:

Main Base materials	1.38CrMoAlA  (Nitriding Steel)
	2. SKD-61   (Special Tool Steel)
	3. 42CrMo (Ultrahigh Strength Steel)
	4. DC53 (Cold Work Die Steel)
	5. W6Mo5Cr4V2 (High-Speed Tool Steel)
	6. HPT
Main Alloy Materials	1. Ni-based alloy/Deloro alloy
	2. Tungsten carbide/Wolfram carbide
	3. NiCo-based alloy
	4. Fe-based alloy
	5. Co-based alloy
Processing Technics	1. Heat treatment
	2. Quenching
	3. Nitriding treatment
	4. Bimetallic alloy welding
	5. Bimetallic alloy centrifugal casting
	6. Hard-chrome electroplating
Technical parameters	Nitriding layer depth	0.5-0.8mm
	Nitrided hardness	HRC56-58
	Nitrided brittleness	Less than grade 1
	Surface roughness	Ra 0.4
	Linearity of screw	0.015mm
	Hard-chrome plating hardness	≥HRC57
	Chrome-plating layer depth	0.03-0.09mm
	Bimetallic layer depth	3 mm
	Bimetallic layer hardness	HRC58-62
Above are main technical information, a suitable screw and barrel will be made according to your requirement.

 

ISO 9001:2008 approved :

 

ABOUT ZHONGYANG:

 

ZY screw has been established for 20 years and has 8 years experience in exporting screws and barrels, we have experienced workers,  all necessary equipments like CNC machines, centrifugal casting machines, nitriding furnace...... More processing steps will be used in the manufacturing in order to have a better quality, all screw and barrel will be checked more than once before shipping.

You can tell us your requirement in wear& corrosion resistant or others, different price will be quoted, also design service& measure service is provided too.

Choose us, we do screw and barrel in good attitude!

 

 

  

 

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