The bimetallic barrel for single screw is a kind of barrel moulding 2-5mm 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 barrel.Bimetal has more obvious advantage when processing special plastics to enhance the abrasion life, such as engineering plastics, flourine plastics,PPO,and etc.
The company uses special alloy powders being sprayed and welded on the screw's ridge, and used different alloys and welding methods for the screw of different functions.
1.Material:38CrMoalA
Nitriding treatment,Surface hardness:HV>=900
Nitriding depth: 0.5-0.8mm
2.Material of barrel inside layer,Tungsten carbide alloy,
Working range: inner diameter 15mm-500mm, effective
length:80000mm
processing technic: HP/HVOF+Metallurgical Bonding
alloying component: Ni+Cr+Wc and so on
hardness scale: HRC62-64
adhesion power: >126MPA
straightness: 0.015mm/m
surface roughness: Ra0.4um
Alloy nameplate: Sweden
Product note: Patent all alloy sintering technology, super wear resistance, super corrosion resistance, it is suitable for halogen free material.
Screw & barrel use material
Raw material
The finished product processing equirements
38CrMoAIA, SACM645, 40Cr, AISI4140, 42CrMo
Bimetallic of the inner hole centrifugal casting
GHII3
nature hard after high temperature
Screws and barrels processed via bimetallic alloy process have many virtues, such as high hardness, stronger wear resistance.And their general properties are three times that of the Nitriding steel. Thus they can overcome the week points such as easy wearing and easy corrosion.Any they are widely used in the production of plastic materials. The main maching methods are as follows: spot-spray, spray coating, cover coating, mould,butt welding, etc. The metallic process used in our factory is the advanced technology, and final production quality is stable. It will be the best choice for producing special screws.
The advantage of bimetallic screw: strong abration resistant, good for the 30% glass fiber and reworked materials.
Skin characteristics
1. super hard alloy of high density, low porosity and high hardness.
2. uniformity heating of powder and low strength pressure
3. can effectively smooth spray.
4. high dynamic energy and uniform hardness
5. with high corrosion resistance, high wear resistance and high temperature resistance properties.
6. The abhesion force, can be processing, coating thickness.
Hardness: HV1100-1400
Adhesion strength: Above 10000Ps
Alloy powder of tungsten carbide (WC)
Nickel chromium alloy ( NiCr )
Self fluxing alloy ( also according to the different material, the use of alloy powder mix )
Application:
The barrel inner hole centrifugal casting of metal, alloy screw and barrel: with wear and corrosion resistance, high temperature resistance, high pressure resistance, commonly used, lens, transparent shell, cosmetics containers, transparent acrylic, nylon, PVC, PC, PPA, PPO, PPS, PA6T, LCP, ABS, bakelite, fire PC+glass fiber, Nylon+ glass fiber, powder, ceramic powder, aluminum powder, iron powder, electric injection molding machine.
Ceramic special screw-plus fiber, fire retardant, flame retardant engineering plastics, ceramic, magnet powder
Product introduction:
Supersonic alloy spray+metallurgical combine, super wear resistance, high corrosion resistance, applicable to ceramic injection molding processing. The hardness, wear resistance and corrosion resistance are required to have adequate surface hardness and thickness, can cope with various plus fiber, fire retardant, flame retardant engineering plastics ceramic, magnet powder and other special the corresponding hardness wear resistance of materials. Strength due to the use of Hitachi original high toughness DAC-MAGIC parent material, in its outer surface cover, about 2mm alloy layer, through the metallurgical binding, so it has high flexural strength and compressive strength. 4 ceramic finished screw inspection before shipping, the ceramic screws can not be packed unless 12 hours of immersion of concentrated sulfuric acid after inspect to realize no foaming, no buddles, no cracking, no corrosion.
Scope application: PA, PC, halogen-free material adding; PA, PC plus fiber above 40%; iron powder, ceramic powder is easy to wear and contamination of raw materials.
The magnet powder specialized screw---engineering plastics which have glass fiber\ fireproofing agent\ and fire retardant, ceramics, magnet powder
Product introduction:
Patent alloy sintering technology: supersonic speed alloy melt shoot+metallurgical bonding, super wear resistance, super corrosion resistance, apply to the magnet powder processing molding.
Hardness--Get wear resistance and corrosion resistance should be fully surface hardness and thickness, can deal with all kinds of add glass fiber, fire prevention agent, flame retardant engineering plastic, ceramic, magnet powder, and other special requirments of the corresponding materials wear-resisting hardness.
Intensity---Due to the use of Hitachi original high toughness DAC-MAGIC be the base material, 2mm alloy layer on the surface, after metallurgical bonding, so has the very hightwisting strength and compressive strength.
Scope application: PA, PC, halogen free, PA, PC, more than 40% glass fiber, extremely easy wear raw material like iron powder, ceramic powder, and pollutional raw material.
halogen special full alloy screw--super wear resistance and corrosion resistance, suit for halogen- free +50%GF materials.
Product introduction:
Patent alloy sintering technology: supersonic alloy spray + metallurgical combination of super wear resistance, high corrosion resistance for halogen free +50%GF materials using. Hardness, wear resistance and corrosion resistance are required to have adequate surface hardness and thickness, can cope with various plus fiber, fire retardant, flame retardant engineering plastics, ceramic, magnet powder special wear- resistance materials corresponding hardness requirments. Strength due to the use of Hitachi original high toughness DAC-MAGIC parent material, the outer surface cover about 2mm alloy layer, through the metallurgical binding, so it has high flexural strength and compressive strength.
Scope application: PA, PC, halogen free, PA, PC, more than 50% glass fiber, extremely easy wear raw material like iron powder, ceramic powder, and pollutional raw material.
Detailed Images
Packing & Delivery
Packaging Details
PE PVC PP bimetallic single screw barrel for extruder
1. Be brushed anti-corrosive oil on screw barrel.
2. Packed with film.
3. Packed in the wooden.
Delivery Time
Shipped in 20 days after payment
Factory
Our Company
ZHOUSHAN QUNYING PLASTIC MACHINERY MANUFACTORY
ZHOUSHAN QUNYING PLASTIC MACHINERY MANUFACTORY is a professional manufacturer of extruder screw barrel, injection screw barrel, parallel twin screw barrel, conical twin screw barrel, rubber screw barrel, bimetallic screw barrel and other various trpes of screw barrel. At present, Qunying screw have a professional design experienced production team. We are located in east of Zhoushan city, zhejiang province, close shanghai, Ningbo port.
ZHOUSHAN QUNYING SCREW has a strong techinial force, equiped with advanced equipment and strict tests. Mostly products materials are selected from high quality powder alloy steel with the best materials to exploit market and most new materials, add reasonable process design through tempering, molding, qualitatine.
Till now, our screw barrels have been exported to more than 40 countries all over the world, like USA, India, South Africa, Turkey, Russia and so on. We sincerely welcome customers to negotiate consultation and exchanges guidance. Your satisfaction is our eternal pursue and goal.
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Related Products
Exhibition
Plastics & Rubber/ Plaspak/ DrinkTech Indonesia 2015
