渡辺製作所 List of Products and Services

The "Cylinder Hitachi Metals H-ALOYneo Series" for plastic molding (injection molding machines and extruders) is a high-strength cylinder that meets the demands for high-temperature, high-pressure molding and high-speed molding. It has high strength in both the alloy layer and the base material, achieving excellent pressure resistance. 【Features】 ○ Achieves low cost through a unique manufacturing method ○ Produces cylinders for injection molded and extruded materials from various manufacturers, as well as special cylinders For more details, please contact us or download the catalog.

• Processing Contract
• Contract manufacturing
• cylinder

The "Cylinder Hitachi Metals H-ALOYneo Series" for plastic molding (injection molding machines and extruders) has been renewed from the long-selling H-ALOY series to H-ALOYneo. The H-ALOYneo cylinder applies newly developed high-strength steel as the base material, increasing the base material strength without changing the alloy characteristics. *For large diameter products with an outer diameter of φ180 or more, the old H-ALOY with SCM440 base material will be applied. 【Features】 ○ Achieves low prices through a unique manufacturing method ○ Produces cylinders for injection molded and extruded materials from various manufacturers, as well as special cylinders For more details, please contact us or download the catalog.

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• Contract manufacturing
• cylinder

The "Cylinder Hitachi Metals H-ALOY Series" for plastic molding is a series of cylinders that achieves long life with excellent wear resistance and high corrosion resistance. We offer a wide range of material lineups with various NEOC cylinder series and various H-ALOYneo cylinder series to meet our customers' stringent requirements. 【Features】 ○ Achieves low prices through a unique manufacturing method ○ Produces cylinders for injection molded materials and extruded materials from various manufacturers, as well as special cylinders For more details, please contact us or download the catalog.

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• Contract manufacturing
• cylinder

The "Screw DPS570X" is a screw for injection molding machines and extruders that achieves long life even with the most demanding resins, thanks to its ultra-wear-resistant and highly corrosion-resistant properties, combined with incredible hardness and flexibility achieved through a powder manufacturing process. [Usage Examples] ■ PPS + GF over 50% ■ PA + GF over 50% ■ LCP (high-temperature grade) ■ Mica, Plamag, Ceramic, PEEK, etc. *For more details, please download the PDF or feel free to contact us.

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The "Screw DPS450R" is a screw for injection molding machines and extruders that is highly resistant to abrasion and corrosion, making it ideal for GF reinforced grade resins. It is compatible with super engineering plastics! Thanks to ESR treatment and powder manufacturing methods, it also excels in corrosion resistance and mirror finish, preventing erosion from gases such as those from PPS. [Usage Examples] ■ PPS + GF 30% - 40% ■ PA6T + GF 30% - 40%, etc. *For more details, please download the PDF or feel free to contact us.

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The "Screw DPS400" is a screw for injection molding machines and extruders that offers high wear resistance and high corrosion resistance. It has properties that prevent burning and contamination, and is compatible with super engineering plastics. 【Usage Examples】 ■ PBT + GF 30% - 40% ■ PA + GF 30% - 40% ■ POM + GF 30% - 40% ■ PVC, etc. *For more details, please download the PDF or feel free to contact us.

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• Contract manufacturing

Watanabe Manufacturing, a leading company that provides comprehensive support from the design and manufacturing of injection molding machines, extruders, screws, cylinders, and molds to subsequent maintenance, explains the "causes of wear." There are many reasons why screws and cylinders wear out. They can be broadly classified into three categories: "abrasive wear," "corrosive wear," and "adhesive wear." 【Features】 ■ Abrasive Wear - A phenomenon where hard particles come into contact with the outer circumference of the screw and the inner surface of the cylinder, causing material to be scraped off. ■ Corrosive Wear - Occurs due to corrosive chemical components generated during the heating and melting process of the resin, which chemically attack the outer circumference of the screw and the inner surface of the cylinder. ■ Adhesive Wear - Occurs due to metal contact between the surfaces of the screw and cylinder caused by resin retention. *For more details, please refer to the PDF document or feel free to contact us.

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Watanabe Manufacturing, a leading company that provides comprehensive support from the design and production of injection molding machines, extruders, screws, cylinders, and molds to subsequent maintenance, explains its "high mixing screw design." Resolving mixing issues in molding is not difficult, but if the mixing method is incorrect, it can lead to burning, contamination, and product degradation. Our company has solved numerous mixing problems through changes in screw design. On our website, we introduce the selection of materials and the basic concepts of each part when designing and producing original designs for improving mixing and melting. 【Basic Concepts】 ■ Material Selection ■ Key Points in the Design of Screws for Improving Mixing and Melting - Mixing Settings - Volume Compression Ratio (CVR) *For more details, please refer to the PDF materials or feel free to contact us.

• Circuit board design and manufacturing
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Watanabe Manufacturing, a leading company that provides comprehensive support from the design and production of injection molding machines, extruders, screws, cylinders, and molds to subsequent maintenance, explains "Screw Design for Reducing Burn and Contamination." By analyzing the chemical properties of the resin, the mechanisms behind molding defects become clear. Based on this knowledge, designing the screw can lead to a significant reduction in defect rates. On our company website, we introduce the selection of materials and the basic concepts for designing and manufacturing original designs. 【Basic Concepts】 ■ Material Selection ■ Screw Design - Design of the Feed Zone - Design of the Compression Zone (Tapered Plasticizing Zone) - Design of the Metering Zone (Uniform Melting Zone, Measuring Zone) - Design of the Three-Point Components *For more details, please refer to the PDF document or feel free to contact us.

• Circuit board design and manufacturing
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Are you troubled by thread pulling or nose dripping? We have been solving these issues with our unique know-how at Watanabe Manufacturing. We can resolve these problems with long life and low cost. 【Features】 ■ Uses Daido Special Steel's corrosion-resistant and wear-resistant materials ■ Achieves long life ■ Creation of nozzles to prevent thread pulling and nose dripping *For more details, please refer to the PDF materials or feel free to contact us.

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In the maintenance service department, we quickly respond to any troubles with reliable maintenance even after purchase. We are available 24 hours a day, so please call us immediately if you need assistance. Additionally, we offer various services such as free workshops. 【Service List】 ■ Screw and cylinder replacement work ■ Screw and cylinder friction measurement ■ Screw and cylinder repair ■ Other machinery repairs ■ Maintenance training ■ Screw and cylinder consulting services *For more details, please refer to the PDF document or feel free to contact us.

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Our company has established an engineering department to design and manufacture extrusion machines, dies, and peripheral equipment in-house. From specification meetings to testing, design, manufacturing, and delivery, we will work closely with our customers to share information, enabling us to provide highly accurate products, from individual components to complete system setups. [Design and Manufacturing List] ■ Extrusion Dies: Manufacturing of bodies, heaters, and frames in various sizes ■ Single-Screw Extruders: Manufacturing of stationary, mobile, and temperature control panels in various sizes ■ Molding-Related Equipment: Manufacturing of various types ■ Manufacturing Equipment: Manufacturing of various types *For more details, please refer to the PDF materials or feel free to contact us.

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• Circuit board design and manufacturing

In the parts department, we manufacture nozzles for thread pulling, nose dripping, and cold slag countermeasures, as well as heaters. Using Daido Special Steel's corrosion-resistant and wear-resistant materials, we achieve long service life. Our steel materials have high hardness and excellent smoothness, ensuring not only longevity but also products that are resistant to seizing. 【Features】 ■ Achieves long service life ■ Amazing wear-resistant and corrosion-resistant nozzles ■ Nozzles to prevent thread pulling and nose dripping ■ Manufacturing of various heaters *For more details, please refer to the PDF document or feel free to contact us.

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• nozzle
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In the cylinder division, we have achieved low prices through our unique manufacturing methods, ranging from cylinders for injection molded and extruded materials from various manufacturers to special cylinders. Using Daido Special Steel's "DPS Series" special powder alloy, which is resistant to corrosion and wear, we ensure long service life. Through years of research, we have developed cylinder powder alloys compatible with various engineering plastics. Furthermore, thanks to the complete in-house production capabilities of Watanabe Seisakusho, we have realized cost reduction. 【Features】 ■ Long service life ■ Achieved low prices through unique manufacturing methods ■ Manufacturing cylinders from various manufacturers for injection molded and extruded materials to special cylinders ■ A wide variety of cylinders optimized for each resin ■ Cost reduction achieved through complete in-house production *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• cylinder

In the screw division, we can manufacture a wide range of screws, from those for injection molding machines and extruders from various manufacturers to special screws, at low prices due to our diverse production capabilities and unique manufacturing methods. We have achieved long service life by using Daido Special Steel's "DPS series" screw-specific alloy with corrosion and wear resistance. Furthermore, we can accommodate standard materials (Hcr plating, nitriding) screws and various other coatings. 【Features】 ■ Use of corrosion and wear-resistant materials specific to screws ■ Achieves long service life ■ Low-cost manufacturing made possible by unique manufacturing methods ■ Compatible with various coatings *For more details, please refer to the PDF materials or feel free to contact us.

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• Coating Agent

The "DPS Series" is a screw made using Daido Special Steel's corrosion-resistant and wear-resistant materials, achieving a long lifespan. We offer a wide range of grades, including ultra-high wear-resistant and ultra-corrosion-resistant specifications. You can trust us with the design, manufacturing, and maintenance of screws, cylinders, and various parts for injection molding machines and extruders. 【Features】 - Uses corrosion-resistant and wear-resistant materials from Daido Special Steel, achieving a long lifespan - Manufactured at low cost due to the equipment capabilities and unique methods of the screw manufacturer - Produces screws for injection molding machines and extruders from various manufacturers, including special screws - Supports standard materials (Hcr plating, nitriding) and various coatings for screws *For more details, please download the PDF or feel free to contact us.

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• Contract manufacturing

Watanabe Manufacturing Co., Ltd. is a manufacturer of screws and cylinders for injection molding machines and extruders. Due to the rapid advancements in engineering plastics in recent years, plastics have been adopted for various critical safety components, including parts for automotive engines and even in the field of aircraft engines. Harsh resins have been developed one after another, increasing their applications as functional components. Our screws and cylinders are made from corrosion-resistant and wear-resistant materials, and we hope to achieve fully automated production for even just one more minute. Watanabe Manufacturing aims to be a leading company in providing parts for injection molding and extrusion machines that meet our customers' needs, including screws, cylinder components, on-site maintenance, and education in resin molding. 【Business Activities】 - Design and manufacturing of screws and cylinders for injection molding machines, extruders, and blow molding machines, as well as various components - Mold design and manufacturing, electrical discharge machining for molds, and plastic injection molding machines - Various precision grinding processes - Various precision parts processing For more details, please contact us or download our catalog.

• Processing Contract
• Contract manufacturing