Plastic screw

cylindrical headalloy

Screw structure and compression ratio can be designed according to different products & different output re quirement/Eextruder screws/extruder barrel Materials: 38CrMoAlA+ Ni +WC Alloy Hardness: HRC56-62 Application: PVC , PE , WPC plate , pipe industry. Charactors: High Hardness and High Wear-Resistance Conical twin-screw extruder is composed of barrel, screw ,gear transimission system,measurable feeding,vacuum system,heating,cooling and electronic control components. It is mainly used in plasticizing,extruding and forming PVC pipe ,plate,sheet,film,profile,and granule,etc Main Advantages 1– Low shearing rate, uneasy degradation,plasticization uniform and agglomeration. 2– Reliable quality ,wide application range and long servicing life. 3– Automatic temperature control, vacuum gas exhaustion, oil cooled screws. 4— forced feeding and self-cleaning mechanism. Bimetallic Conical Screw Parameter Basic Steel: 38CrMoAIA Heat treatment hardness: HB260°~320° Nitriding hardness:HV950°~1000° Nitriding depth: 0.50~ 0.7mm Nitriding brittleness:≤ grade 2 Roughness:Ra0.4 Screw straightness:0.015mm Chrome plating hardness:≥950HV Chrome thickness: 0.05～0.10mm Bimetal depth: 1.0～2.0mm Bimetal hardness:HRC56°~65° Bimetallic Special Materials hot processed steel: 1.2344、H13、W360、SKD61、 cold processed steel: 1.2379、K340、D2、DC53、SKD11、W110 HSS:1.3343、1.3243、 SKH51、SKH55、 HIP Powder HSS:CPM9V、SK739、SK726、SK742、GH113 Screw flight top use Stellite plasma alloy welding, alloy types: cobalt base,nickel base, iron base alloy.