Nitride cylinder screw: Material: 38CrMoALA(SACM645)
Nitride layer depth: 0.8mm
Nitride hardness: HC1000HV degree(ie, HRC65-68)
Straightness: 0.015mm/M
Roughness of the surface: Ra0.4um, screw surface after galvanization: Ra0.2 um
Double-alloy cylinder screw
A class alloy: Cylinder centrifugal cast, a layer of alloy 100% covers its surface which includes 40% tungsten
B class alloy: Cylinder centrifugal cast, a layer of alloy 100% covers its surface, which includes 25% tungsten
C class alloy: Cylinder centrifugal cast, the screw is PAT crest spray welding alloy, which includes 9.5% tungsten
Application of plastic: They are suitable for all kinds of plastic accession fiberglass, Vo fireproofing materials, PPA, PPS, LCP, PEI, magnetic particle, teflon and other special engineering plastic.
Cylinder screw A+ class: Made by potsherd with precise technology, the inside diameter is φ 14-φ 50mm, length: 1, 500mm, compared with the double-alloy products, the potsherd series products can function better in abrasive resistance and corrosion resistance. Hardness of the surface: HR66° -70° . The products are suitable for plastic accession fiberglass30%-70%, LCP, teflon, zero-halogen and other special engineering plastic.