• Model NO.：double screw barrel
• Brand Name：Pym
• Base Material：38crmoaia, 42CrMo
• Certificats：CE BV SGS Tvu
• Delivery：25days
• Heating-Treatment：Nitrogen, Electroplated Hard-Chrome Finshed etc
• Transport Package：Packed in Wooden Case.
• Specification：CE SGS BV TUV
• Trademark：pym
• Origin：Wenzhou, Zhejiang, China
• HS Code：847790000
• Production Capacity：300set,Sets Per Month

Basic Info.

Model NO. double screw barrel Brand Name Pym Base Material 38crmoaia, 42CrMo Certificats CE BV SGS Tvu Delivery 25days Heating-Treatment Nitrogen, Electroplated Hard-Chrome Finshed etc Transport Package Packed in Wooden Case. Specification CE SGS BV TUV Trademark pym Origin Wenzhou, Zhejiang, China HS Code 847790000 Production Capacity 300set/Sets Per Month

Product Description

   For bimetallic screw ,we have adopted advanced technique(HP/HVOF)of surface harden Process by the whole screw surface,WPT1 alloy with corrosion resistant suits for nylon,PVC,PC,PMMA and so on.WPT2alloy corrosion resistant and high temperature resistant Suits for magnetic power ,maanetic powder,magnesium and alumimum powder.Bakelite injection and so on .WPT3 is compatible with WPT1 and WTPT2.
   For bimetallic barrel ,we have raised the proportion of tungsten contained in alloy to 30%and 50%from previous10%,and we also have increasedthe processing length to 4000mm from the previous length of 3000mm.

 

The main advantage of  screw barrel:

 a. Advanced Nitriding Technology 
 b. Anti-corrosion and Wear-resisting Duplex Metal Spraying Technoloy
 c. we uses special alloy powders being sprayed and welded on the screw's ridge,and uses different alloy and welding methods for the screw of different functions.

 

Why  choose us ?  

A>  long time experience and history

B>  long time nitriding treatment and heating treatment by itself

C>advanced Fanuk series CNC computer-controlled milling machines

D>depth hole drilling machine in 10meters length, which ensure the straigtnss of barrel inside.

E>  CAD drawing confirmation before start making

F>  Prompt after sale service

 G>Land owner and registration capital 25,000,000RMB


 

Ruian yumin machine screw co.,ltd is a factory specialized in making screw barrel in various materails, filter, t die, gearbox, and extruder machine. We are largest one in Ruian city who supply main parts to machine- maker with the history over 24 years. Our workshops cover lands over 5.000 cube meters. We have two factories in Ruian, with 4workshops. We have many computer-control CNC milling machines with the length 8000mm in Fanuk series, 18000mm length deep hole drilling machine, and other advanced equipments. All the process is done by ourself, including nitrding treatment. We do nitriding treatment for 7 days and nights, which ensure the hardness and lifetime of screw barrel a lot. Meanwhile, our factory and products are passed the assessment by SGS company, and Bureau of Veritas, TUV, and CE certificate. 
                   Welcome to visit our company ! 

Product	screw barrel  for   pellet
Material	38 CrMoAlA(JIS SACM645); 42 CrMo(JIS SCM440)
Hardness of nitrogen treatment	HV900°~1100°
Tempering hardeness	HB240 ° ~280°
Depth of nitrogen layer:	0.6~0.8mm
Nitrided Brittleness	above 1 stage
Surface Roughness	Ra0.4 um
Screw straightness	0.015mm
Hardess of surface chromium-plating after Nitriding	HV≥950HV
Chromium plating Depth	0.025-0.085mm
Alloy Depth	2.5mm-4mm
Alloy hardness	HRC62°~72°
Heating-treatment	nitrogen ,electroplated hard -chrome finish,high frequency quenching