Single Screw And Barrel Suppliers and Manufacturers

Barrel & screw for extruder Specifications: 15mm -0mm Length/Diameter Ratio: L/D=15-45 Screws can be selected from ordinary, gradual, mutational, pinned, shielding, separating and exhausting types. The compression ratio of screw can be designed according to different raw materials and requirements of clients.

Single Screw and barrel for Injection Moulding Machine Nitride hardness HV850 â?? 1000 Screw diameter Range Φ20~Φ300mm Max. Barrel Inner Bore Diameter 500mm Nitride case depth 0.45 - 0.7mm Screw bimetallic depth 0.8-1.2mm Barrel bimetallic depth HRC 58-60

SPECIFICATION Size15 mm300mm Max Length10000mm Nitriding HardnessHV900 Hardness of 0.2mm deep76038CrMoALA Nitride brittleness2 Class Surface roughnessRa0.4µ m Straightness0.015mm Thickness of alloy layer1.5-2mm Alloy hardness:HRC56-60 Thickness of chromium plating layer :0.030.05mm APPLICATION Film blowing/Granulation/Wire & Cable/Sheet & Panel and other single screw extrusion products PVC PE PP ABS TPE and other plastics

Specification: Screw diameter: d20mm- d220mm Mould clamping force: 250t-3200t Shot weight: 30g-30000g Base materials: (1)38crmoala(jis sacm645) (2)42crmo(aisi 4140) (3)4cr5mosi v1 (jis skd-61) (4)9cr18mov (5)hpt Bimetallic alloy materials: 1)fe-based alloy 2)ni-based alloy/deloro alloy 3)co-based alloy 4)nico-based alloy 5)tungsten carbide/wolfram carbide Technics: Heat treatment High-frequency quenching Nitriding treatment Hard-chrome electroplating Bimetallic alloy welding Bimetallic alloy centrifugal casting Technical parameter: Nitrided layer depth: 0.5-0.8mm Nitrided hardness: 900-1000hv Nitrided brittleness: less than grade 1 Surface roughness: ra0.4 Linearity of screw: 0.015mm Hard-chrome plating hardness after nitriding: 950hv Chrome-plating layer depth: 0.025-0.085mm Bimetallic layer depth: 3mm. Slushing oil coated& film wrapped in wooden case

Specification: Screw Diameter: D15- D 300 L/D ratio: 15-46 Product classification: Aiming at different plastic products the screw can be chosen from: General type, pin type, barrier type, separation type, and gas-exhausting type, etc. Base Materials: (1)38CrMoAlA(JIS SACM645) (2)42CrMo(AISI 4140) (3)4Cr5MoSi V1 (JIS SKD-61) (4)9Cr18MOV (5)HPT Bimetallic alloy materials: 1)Fe-based alloy 2)Ni-based alloy/Deloro alloy 3)Co-based alloy 4)NiCo-based alloy 5)Tungsten carbide/Wolfram carbide Technics: Heat treatment High-frequency quenching Nitriding treatment Hard-chrome electroplating Bimetallic alloy welding Bimetallic alloy centrifugal casting Technical parameter: Nitrided layer depth: 0.5-0.8mm Nitrided hardness: 900-1000HV Nitrided brittleness: less than grade 1 Surface roughness: Ra0.4 Linearity of screw: 0.015mm Hard-chrome plating hardness after nitriding: >950HV Chrome-plating layer depth: 0.025-0.085mm Bimetallic layer depth: 3mm Slushing Oil Coated& Film Wrapped in Wooden Case

1.We are a professional company specialized in manufacturing many types of screw, the barrel can be applied on all types of injection moulding machine,rubber hot-feeding extruder, rubber cold-feeding extruder, pin barrel cold feed extruder, plastic extruder with different specifications. 2.The models of screw include: Variable pitch and variable depth, variable pitch and equal depth, variable depth and equal pitch, and equal depth and pitch. Groove multi-die type, composite type, mixing type and separating type. 3. The material of screw: manufactured with high-quality nitro alloy steel, applying the method of hardening and tempering and nitriding, thus it enjoys the characteristics of long working life, wear resistance, and anti corrosion. Besides, the technique of hard alloy spraying or chrome plating can be used on the working surface of screw, which will make it have better using effectiveness.

1. Diameter: 15mm-300mm Max length: 10000mm 2. Material: 38CrMoAIA Nitriding treatment,Surface hardness: HV900 Nitriding depth: 0.5-0.6mm 3. Material of barrel inside layer: tungsten alloy Surface spraying, prolong life of screw. Wooden case.

Ningbo Superior Machinery and over 30-year-old factory with ISO 9001:2008 certificated, manufacturing screws, barrels for injection and extrusion processing. Specifications of our Ni-based bimetallic barrel: Basic Material for body: superior pre-hardening material 4140 Alloy powder: Nickle-based self-melting alloy powder from American Wall Colmonoy Corporation Processing: vacuum sintering cladding ( we're the first and unique Chinese factory applying this technology to barrel production since 2009!) Hardness: 56-60 HRC Service life: 3~6 times than bimetallic barrels processed by high temperature centrifugal casting Application: halogen-free plastic, the high abrasion, corrosion materials adding high fibre, carbon fiber, mineral fiber, ceramic, magnetic powder, metal powder etc. Advantage: more stable molecular structure, higher density of the alloy power than common bimetallic barrels.