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 φ14-φ50mm, 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,
