Zhoushan conical twin screw price technical parameters
◆ Nitride layer depth: 0.6-0.9mm
◆ Nitriding hardness: HV≥950
◆ Nitride brittleness: ≤ secondary
◆ Surface roughness: Ra ≤0.4um
◆ Straightness of screw: not more than 0.015mm
◆ The hardness of the chromium plating layer on the surface after nitriding: ≥950Hv.
◆ Dual alloy hardness: HRC55-62; Screw barrel alloy is more than 1200mm long, and adopts unique processing technology. The alloy layer is inlaid firmly and does not fall off.
◆ Chrome plating thickness: 0.03—0.08mm
◆ Dual alloy depth: ≥2mm
Sheet production line: PVC series, from soft sheet to hard sheet, from thin sheet to thick sheet, the content of calcium powder is above 5%.
Pipe production line: PVC pipe series, from low calcium to high calcium, up to 300 parts, from light calcium to heavy calcium
Profile production line
Granulation production line: PVC granulation series, transparent granulation (good transparency of granules, no yellowing-no exhaust barrel), gray granulation (good particle color, fullness-barrel with row gas)
Foaming production line: PVC free foaming, crust foaming, semi crust foaming
Conical twin screw core water-cooled internal circulation series and screw core oil-cooled external circulation.
The company produces various pipes, profiles, sheets, foam board screw barrels
Zhoushan conical twin screw prices are ordinary nitrided parts, ion nitrided parts, bimetallic parts.
The material is Fushun high-quality 38CrMoAlA.
Stainless steel quenched parts, SKD61 nitrided and quenched parts.
Ordinary nitriding parts: The screw barrel is quenched and tempered and has a hardness of HV850 or higher, and the brittleness is not higher than the second grade.
Bi-metal parts: The alloy of the active part of the head ring pad is alloy-treated and highly wear-resistant.
1. Do not start the machine when the screw does not reach the preset temperature.
2, to prevent metal fragments and debris from falling into the hopper, if processing recycled materials, you need to add a magnetic hopper to prevent iron filings from entering the barrel.
3. When using anti-salin, make sure that the plastic in the barrel is completely melted, so as not to damage the transmission system parts when the screw is retracted.
4. When using new plastic, the remaining material of the screw should be cleaned.
5.When the temperature of the molten plastic is normal, but the black spots or discoloration of the molten plastic are continuously found, the rubber screw should be checked.
6. During processing, try to plasticize the material as much as possible, do not allow metal foreign matter to be mixed into the material, and reduce the screw torque.