The company produces a variety of screw, barrel, strict selection of high quality nitrided steel (38CrMoAlA), by the quenching and tempering, forming, qualitative, nitriding (or spray welding dual alloy), refining, polishing and other processes refined. Europe and the United States the latest technology and processing testing equipment elaborate, strict quality control to ensure product accuracy and quality, and has a longer life and good corrosion resistance.
1 Specification
Cold feed pin barrel, screw
Φ60mm~Φ250mm
Aspect ratio:L/D=12-18
Cold feed barrel, screw
Φ45mm~Φ300mm
Aspect ratio:L/D=8~20
2 Substrate material
1) 38CrMoAlA(JIS SACM645)
2) 42CrMo(AISI 4140)
3) 4Cr5MoSi V1 (JIS SKD-61)
3 Treatment Process
Quenched and tempered, qualitative, nitriding treatment.
4 Technical Parameters
Nitriding depth: 0.50mm-0.80mm
Nitriding hardness: 850-1000HV
Nitriding brittle: ≤level 1
Surface roughness: Ra 0.4
Screw straightness: 0.015mm
