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China, Chinese Rubber Screw and Cylinder with Heaters1 Industrial Products Supplier Manufacturer Details, price list catalog:
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Rubber Product Making MachineryRubber MachineryRubber Machine
Zhejiang Zhongyang Screw Manufacturing Co., Ltd.
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Product Description ZHONGYANG SCREW is one of the most history and famous screw barrel brand in China. We have professional and experienced teams in every department of our company. We think professional, quality and service is the basic of business. If you want reliable and helpful screw barrel, we will be your best choice! Please kindly find our detailed information as following:Specification:Screw Diameter for Cold Feeding Screw and Barrel: Φ 40mm-Φ 300mmScrew Diameter for Hot Feeding Screw and Barrel: Φ 30mm-Φ 250mmScrew Diameter for Pin Rubber Screw and Barrel: Φ 50mm-Φ 250mmL/D Ratio: 4-18Technical information:Base materials:1)38CrMoAlA (JIS SACM645)2)42CrMo (AISI 4140)3)4Cr5MoSi V1 (JIS SKD-61)4)DC53 (JIS G4404)5)Cr12MOV (SKD11)6)9Cr18MOVBimetallic alloy materials:1)Ni-based alloy/Deloro alloy2)Fe-based alloy3)Co-based alloy4)NiCo-based alloy5)Tungsten carbide/Wolfram carbideProcessing technics:Heat treatmentHigh-frequency quenchingNitriding treatmentBimetallic alloy weldingBimetallic alloy centrifugal castingHard-chrome electroplatingTechnical parameters:Nitriding layer depth: 0.5-0.8mmNitrided Hardness: 900-1000HV (HRC 55-65)Nitrided brittleness: Less than grade 1Surface roughness: Ra 0.4Linearity of screw: 0.015mmBimetallic layer depth: 3 mmBimetallic layer hardness: HRC 55-70Hard-chrome plating hardness after nitriding: ≥ 950HVChrome-plating layer depth: 0.03-0.1mmTerms and Conditions:Means of transport: Ocean, Air, ExpressProduction time: About 20-30 days after we receive the advanced paymentProduction Process:Receiving orders - Designing & Drawing confirmation - Blanking Thermal refining - Heat treatment - Rough Turning - Polishing - Drilling for barrel - Semi Finishing Machining - Bimetallic welding - Centrifugal casting for barrel - Polishing - Nitriding treatment(120 hours) or High frequency quenching - Hard-chrome plating - O. D. Grinding - Honing for barrel - Alignment - Polishing - Inspecting - Packing & ShippingZY SCREW's advantage:First-class designing and researching team;High quality and durable products of screw barrel;Most professional sales who can serve for you timely;Best customer service especially after-sale service;Powerful company's strength support long-term cooperation.Welcome to contact us.
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