injection mould machine screw barrel with nitrided and bimetallic treatment

  1.About E.J.S.   E.J.S industry Co. LTD is specialized in producing screws and barrels for extruders and injection molding machines. Our factory, is located in Jin Tang, Zhoushan, has been in the field since 1992. The sales department moved to downtown Ningbo and became a Golden Supplier on Alibaba in 2012. With our high quality products and sales service, we have satisfied our clients from Europe, South America, North America,  and South Asia etc.  2.  Product Details    Physical Characteristics of Bimetallic Screw:

Type	Model	Hardness (HRC)	Wear resistant	Corrosion resistant	Thickness	Application Glass Fiber
PTA weld	J1 38CrMoAlA Ni-base alloy	45-58	Excellent	Special excellent	1.5~3mm	Under 10%
	J2 SKD61 Ni-base alloy	45-58	Special excellent	Excellent	1.5~3mm	Under 15%
Nitriding	J3 Nitrided	HV more than 800	Good	Good	0.25mm	/

  Types of Bimetallic Screw   For barrels, E.J.S is offering 4 kinds of bimetallic alloys against all types of wear:

Alloy Type		EJS01 Alloy	EJS02 Alloy	EJS03 Alloy	EJS04 Alloy
Wear resistance		Very good	Good	Very good	Excellent
Corrosion resistance		Good	Very good	Very good	Very good
Alloy components		Fe+Ni+Cr+B	Ni+Cr+Co+B	Ni+Cr+Co+V+B	Ni+Cr+Wc+Co+B
Hardness (HRC)		58~64	50~58	55~60	56~62
Temperature area (°C)		less than 400	less 450	less than 450	less than 600
Coefficient thermal	RT-250°C	11.0 x 10-6	11.0 x 10-6	11.5 x 10-6	11 x 10-6
Expansion (/°C)	RT-400°C	11.4 x 10-6	11.4 x 10-6	12.4 x 10-6	12 x 10-6

                               3.  E.J.S Workshop   4. PTA Welding Machine  New PTA welding mahince was brought in early 2015.      5.  Quality Inspection We take only first-class steel and check every production procedure to ensure every dimension is produced precisely. A final complete inspection will be executed  before dispatch.   6. Packaging We use strong plywood or wooden case for all our products       7. Our Advantages   1) Quality always comes first. Our experienced workers pay attention to every tiny procedure during the production and inspection, to ensure the precision of every dimension. 

2) Service makes us outstanding. Our sales people are trained on the products every day. They are always ready to answer your questions and offer the best solutions in fluent English at any time.   3)  Provide an easier working way. With 6 years export experience, we E.J.S offer before-sales, prouction update, after-sales one stop service, which makes an easier way to work with us. We welcome you to visit our factory at any time!     8. Our market Through years of developing, we satisfy our customer all over the world with mainly market in Europe, South America, Asia, Middle East, ect. We also design the drawings per customer’s detailed request.                      

Contact us if you need more details on Injection Mould Machine Screw Barrel. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Screw Barrel、Single Screw Barrel. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Screw Barrel Accessories