China Bimetallic Extruder Screw Barrel for Plastic Extruder

Bimetalic screw barrel for extruder machine
Ruian yumin machine screw co.,ltd is a factory specialized in making screw barrel, gearbox ZLYJ series, t die, filter and extruder machine. Founded in 1988, it has become the biggest supplier of main parts in Ruian city which is basement for plastic machine. is its brand name. Comparing with other manufacturers, it has its great advantages as followings:
A> long time experience and history
B> long time nitriding treatment and heating treatment by itself
C> advanced Fanuk series CNC computer-controlled milling machines
D> depth hole drilling machine in 18meters length, which ensure the straightness of barrel inside.
E> CAD drawing confirmation before start making.
F> prompt after sale service
G> Land owner and registration capital 25,000,000RMB

1.Size: screw diameter:Φ20-Φ500mm

Maximum screw length:10000mm

Barrel inner bore diameter:Φ500mm

2.Materail: A. 38crmoala in high quality

B. alloy steel in high quality

3.Technology: A. nitriding treatment

B. alloy coating spraying

C. heating treatment

D. screw fully hardening

E. vacuum quenching

F: electroplate hard chrome

4.Technical parameter: A: depth of nitrition layer: 0.6-0.8mm

B: nitriding treatment for 7 day and night, surface hardness HV>900

C: fragility of nitriding: less than grade 1

D: surface roughness: ra0.4um

E: streightness of screw: 0.015mm

F: depth of bimetallic layer>2mm

G: hardness of alloy platig: HRC 62-72

H: surface of hardness of chrome coating layer: HRC 62-72

I: thickness of chrome coating layer: 0.03-0.06mm