Screw diameter: 35mm-200mm Length: less than 10000mm Barrel diameter: 35mm-200mm Material: 38crmoala; skd61; skd11; 40cr; 42crmo; high quality alloy steel Technology for tin coated screw barrel/: nitriding treatment, alloy coating spraying, heat-treatment, quenching Appliance for tin coated screw barrel/: pa, evoh, eaa, pc etc
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.
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
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
Hardness after hardening&tempering:hb240-280 Nitrided hardness:hv850-1000 Nitrided case depth:0.45-0.7mm Nitrided brittleness:less than grade1 Surface roughness:ra0.4 Screw straightness:0.015mm Application: pinned screw&barrel.
process specification of screw and barrel: specification:Ф15-Ф360MM The ratio of length to diameter:L/D=12-45 types of screw: For good plasticizing effect,we have different design of screw barrel to meet customers demand.Gradual type,mutant type,wave type,barrier type,double screen type,shunt type,separation type,exhaust type,pin type,mixed type,double-head type,three-head type,multi head type etc.
Model EV88 Inner bore Diameter 88 Hardness 58-62HRC Abrasion Resistance 8 Corrosion Resistance 7 Standard DIN, GB, JIS, ANSI Technics CNC Machining Feature Wear Resistant Material Stainless Steel Categorie: closed, feed, degassing, side-feeding, combi
Screws and barrels for extruder machine Depth of nitrated layer: 0.5-0.8mm Hardness of nitration: 900-1020hv Fragility of nitration: less than grade 1 Surface roughness: ra 0.4um Surface hardness of nitrated cr coating layer:í²950hv Hardness of bimetallic layer: hrc55íp-72íp Thickness of cr-coating layer: 0.03-0.08mm Depth of bimetallic layer:ú+2mm Specifications of screw: ª)20-ª)250 l/d 15-50 we offer various types of extruder screws and adjust to different compression ratio, which can fulfill customer's requirement perfectly.
Extruder Screws and Barrels.
Screw
Screw
Extruder screws and barrels.
Price - Rs.190 Box Material : Mild Steel Thread Type : mm Head Shape : Star Brand : ST Finish ; White Zinc,Auto Black Packaging Type : Bag
Inch Deck Screws: Deck screws are screws specifically designed for use in outdoor decking projects. They are usually corrosion-resistant to withstand exposure to the elements. The "inch" specification likely refers to the length of the screws.
Hastelloy Screws
Titanium Screws
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.
According to GB4806.7
Product Name: Precision Engineered Machine Screw Product Description: Our machine screws are meticulously crafted to deliver exceptional durability, precision, and reliability across a range of industrial and commercial applications. Designed to meet OEM standards, these screws are suitable for assembly in machines, electronics, automotive, and construction industries. Key Features: Material: High-grade stainless steel, carbon steel, or alloy steel for superior strength and corrosion resistance. Size Range: Customizable lengths and diameters are available as per specifications. Threading: Accurate and smooth threading ensures easy installation and a secure fit. Finish Options: Zinc plating, black oxide, nickel, or custom coatings for enhanced aesthetics and protection against wear and corrosion. Tolerance: Manufactured strictly to ISO/ANSI/DIN standards to guarantee dimensional accuracy. Applications: Widely used in machinery assembly, electronic enclosures, automotive assemblies, and structural applications. Production Process for Machine Screws: Material Selection: High-quality raw materials like stainless steel rods or carbon steel wires are selected based on the required properties. Cutting: The raw material is cut into precise lengths matching the screw size using automatic cutting machines. Cold Heading: The cut blanks are fed into a cold heading machine, where the screw head is formed by applying high-pressure force without heating the material. Thread Rolling: Threads are created through a rolling process, where the blank is passed between hardened dies to ensure a strong and accurate thread profile. Heat Treatment: Depending on the material, screws are heat-treated to enhance their strength, durability, and wear resistance. Surface Finishing: A protective coating or plating is applied to prevent rust and improve appearance. Common finishes include zinc plating, galvanizing, or black oxide coating. Quality Inspection: Each screw undergoes rigorous quality checks for dimensions, threading accuracy, tensile strength, and finish. This ensures they meet international standards. Packaging: Machine screws are packed in bulk or customized quantities, labeled with size and specifications for easy identification. Customization Options: We offer tailored designs for machine screws to meet specific requirements, including variations in head shapes (flat, round, hex), drive types (Phillips, slot, hex), and material grades. Our commitment to quality and precision ensures that every screw contributes to the seamless operation of your machinery or assembly line.
Stainless Steel Screws
