Heng Rui Machinery

Zhoushan City, Heng Rui Machinery Co., Ltd. Located in the motherland of the East China Sea, located in the beautiful scenery of Zhejiang Islands, the fourth largest island - the island of Jintang the verge of Shanghai, Ningbo, Zhoushan Port, the world's leading deep-water wharf adjacent.
Zhoushan City Heng Rui Machinery Co., Ltd. is a professional

Film Blowing Machine Screw Suppliers and Injection Molding Barrel Manufacturers

,we are design and manufacture of screw and barrel of production enterprises, the products are mainly used for injection molding machines, chemical fiber machine, film blowing machine, extruder, rubber machine plastic machinery and equipment.
read more

WHAT WE DO services

WHY CHOOSE US

  • Customization

    We can develop and produce all kinds of products according to customer’s drawings or samples.

  • Port of shipment

    We are close to Ningbo Port and Zhapu Port, so it’s convenient to deliver the products to any other country.

  • Ability

    Our monthly production capacity is more than 300 sets, can meet different requirements from different customers.

  • Services

    Our products are in line with international standards and are mainly exported to Europe, the United States, Australia, Asia and Africa.

read more

FAQ MORE+

1.HOW LONG CAN I GET THE FEEDBACKS AFTER WE SENT THE INQUIRY?+

We will reply you within 12 hours on workdays.

2.Are you a manufacturer or a trading company?+

We are a manufacturer, and we have foreign trade department. We market our own products.

3.What products can you offer?+

We mainly produce high precision screws and barrels.

News MORE+

  • What type of screw barrels are suitable for injection molding manufacturers
    What type of screw barrels are suitable for injection molding manufacturers

    The commonly used Extruder Screw on the market are No.45 steel, 40Cr steel (chrome plated), and 38CrMoAIA nitrided steel. If your product is +glass. When chrome plating is applied, it will gradually fall off after about 3 months, causing a color difference. The best choice for nitriding. Stainless steel screw can not do + glass fiber.

    General non-special materials are generally more common screws. Such as PC \ PMMA \ PA and other materials. The compression section of the screw must be long. Mutant screws are generally used to produce crystalline plastics. The long compression section melts and the effect is good. And cutting small will not cause the local temperature to be too high. And the head of the screw head is also very important.

    Double alloy screw barrel material adopts high-quality SACM645 alloy steel as base material, and the top of the thread is welded and welded with double metal layer; the double metal material barrel adopts high-quality 38CrMoALA as the base material and undergoes quenching and tempering; the inner hole of the barrel is centrifugally casted with double metal, Double alloy screw barrel: wear-resistant, corrosion-resistant, high-temperature resistant, high-pressure resistant, suitable for lens, transparent shell, cosmetic containers, transparent acrylic, nylon, PVC, PC, PPA, PPO, PPS, PA6T, LCP, ABS fireproof, Bakelite, PC + glass fiber, nylon + glass fiber, magnetic powder, ceramic powder, aluminum magnesium powder, iron powder, electric injection molding machine, etc., can also be customized according to the requirements of the user processing products.

  • What type of screw barrels are suitable for injection molding manufacturers

    The commonly used Extruder Screw on the market are No.45 steel, 40Cr steel (chrome plated), and 38CrMoAIA nitrided steel. If your product is +glass. When chrome plating is applied, it will gradually fall off after about 3 months, causing a color difference. The best choice for nitriding. Stainless steel screw can not do + glass fiber.

    General non-special materials are generally more common screws. Such as PC \ PMMA \ PA and other materials. The compression section of the screw must be long. Mutant screws are generally used to produce crystalline plastics. The long compression section melts and the effect is good. And cutting small will not cause the local temperature to be too high. And the head of the screw head is also very important.

    Double alloy screw barrel material adopts high-quality SACM645 alloy steel as base material, and the top of the thread is welded and welded with double metal layer; the double metal material barrel adopts high-quality 38CrMoALA as the base material and undergoes quenching and tempering; the inner hole of the barrel is centrifugally casted with double metal, Double alloy screw barrel: wear-resistant, corrosion-resistant, high-temperature resistant, high-pressure resistant, suitable for lens, transparent shell, cosmetic containers, transparent acrylic, nylon, PVC, PC, PPA, PPO, PPS, PA6T, LCP, ABS fireproof, Bakelite, PC + glass fiber, nylon + glass fiber, magnetic powder, ceramic powder, aluminum magnesium powder, iron powder, electric injection molding machine, etc., can also be customized according to the requirements of the user processing products.

Knowledge of the screw MORE+

Standard injection screw General injection molding machine should use standard pitch diameter screw, matched with two high and low pressure conventional screws, widely applicable to the manufacturing of general-purpose plastics and engineering plastics.

Extended injection screw It is a universal type injection screw, which has good plasticizing capacity and compounding performance. The features: high draw ratio (20 - 25), long metering section (30%), light groove in metering section (0.04 - 0.05D), high compression ratio (0.11 - 012D).

Rigid PVC injection screw The features: low draw ratio, short metering section and transmission section, long compression section, deep groove in metering section, low compression ratio. It is suitable for injection moulding of rigid PVC and other plastics with poor thermal stability.