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

/

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.

• 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.
• 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.
• Provide an easier working way. With 6 years export experience, we 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!

Zhejiang Zhongyang Screw Manufacturing Co.,Ltd is a professional and dedicated designer,manufacturer,rebuilder and distributor of screws,barrels and assembly parts for plastic and rubber machines.With our business philosophy of quality oriented and customers foremost,Zhongyang keeps improving to offer excellent products and services to customers.Our commitment to customer satisfaction is priority number one at ZHONGYAG.

Welcome to contact us

If you are looking for a reliable screw barrel supplier,you won't be wrong to choose us!