Bimetallic Screw Barrel

The bimetallic barrel for single screw is a kind of barrel moulding 2-3mm thick alloy coat on the barrel inner wall which has excellent corrosion resistance, abrasion resistance and high working temperature. And its useful service life is greatly improved contrast to the common nitrided cylinder. Bimetal has more obvious advantages when processing special plastics to enhance the abrasion life, such as engineering plastic, fluorine plastics, PPO and etc. The company product's single/twin screw, uses special alloy powders being sprayed and welded on the screw's ridge, and uses different alloys and welding methods for the screw of different functions. Materials: Quality 38CrMoAlA Quality power metallurgy raw materials

Specification: 45/90, 45/100, 50/105, 51/105, 55/110, 55/120, 58/124, 60/125, 65/120, 65/132, 68/143, 70/135, 70/140, 75/150, 80/143, 80/156, 92/188 The above are standard specifications, we can customize according to customers' requirements. The compression ratio of screws can be designed according to different products and ingredients. Base materials: 1)38crmoala(jis sacm645) 2)42crmo(aisi 4140) 3)4cr5mosi v1 (jis skd-61) 4)9cr18mov 5)hpt 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: ¡ý 950hv Chrome-plating layer depth: 0.025-0.085mm Bimetallic layer depth: 3mm Slushing oil coated& film wrapped in wooden case

Technical index 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 Hardness of cr-coating layer: >=950hv Hardness of bimetallic layer: hrc55-72 Thickness of cr-coated layer: 0.03-0.08mm Depth of bimetallic layer: >2mm. 1set/wooden box.

1.65/132 conical twin screw and barrel 2.Alloy hardness:hrc50-65 3.Centrifugal casting(tungsten carbide) 4.Hot sale Dimension:15/30 25/55 35/75 40/83 45/90-99 48/ 112-117 50/105-110 51/ 105-12055/ 110-125 58/ 125 60/ 125-129 65/ 120-132 68/ 147 70/ 150 74/ 156-162 80/ 143-156-162 86/ 177 92/ 184-188 95/ 193 105/ 203

1.Cincinnati conical twin screw and barrel 2.Alloy hardness:hrc50-65 3.Centrifugal casting(tungsten carbide) 4.Hot sale 15/30 25/55 35/75 40/83 45/90-99 48/ 112-117 50/105-110 51/ 105-12055/ 110-125 58/ 125 60/ 125-129 65/ 120-132 68/ 147 70/ 150 74/ 156-162 80/ 143-156-162 86/ 177 92/ 184-188 95/ 193 105/ 203

1.80/156 conical twin screw and barrel 2.Alloy hardness:hrc50-65 3.Centrifugal casting(tungsten carbide) 4.Hot sale 15/30 25/55 35/75 40/83 45/90-99 48/ 112-117 50/105-110 51/ 105-12055/ 110-125 58/ 125 60/ 125-129 65/ 120-132 68/ 147 70/ 150 74/ 156-162 80/ 143-156-162 86/ 177 92/ 184-188 95/ 193 105/ 203

Supplier: Screw barrels, bimetallic screw barrels, extruder screw barrels and twin conical screw barrels for injection molding machinery and extruder

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: d20mm-d220mm Mould clamping force: 250t-3200t Shot weight: 30g-30000g Technical information 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: ¡ã 950hv Chrome-plating layer depth: 0.025-0.085mm Bimetallic layer depth: 3mm. Slushing oil coated& film wrapped in wooden case