Zhoushan nanhaiya Plastic Machinery Co., Ltd is engaged in the production of precision screen and melt glue Barrel, the company has strong technical force, advanced production technology and first-class production facilities. It has more than ten years of experience in screw and melt rubber cylinder manufacturing, and introduces advanced technology and technology from Europe and America, engaging in screw design, alloy spray welding, single screw, conical and parallel twin-screw, PE wood plastic, PVC, EVA, TPR, TR, aluminum plastic plate, screw, barrel, etc. With high standard and high precision, we have won the trust of customers.
Rubber machine screw barrel specification:
Rubber pin screw barrel diameter: Φ 75mm - φ 200mm
Rubber cold and hot feeding screw barrel diameter: Φ 30mm - φ 300mm
Length diameter ratio: 12-18
Base material:
1)38CrMoAlA(JIS SACM645)
2)42CrMo(AISI 4140)
3)4Cr5MoSi V1 (JIS SKD-61)
Treatment process:
heat treatment
Nitriding treatment
Technical parameters:
Nitriding depth: 0.50mm-0.80mm
Nitriding hardness: 900-1000hv
Nitriding brittleness: < grade 1
Surface roughness: RA 0.4
Straightness of screw: 0.015mm
Hardness of surface chromium plating layer after nitriding: ≥ 950hv
Thickness of chromium plating layer: 0.025 ~ 0.085mm
Double alloy depth: 3mm
Engaged in the production of precision screw and melt glue barrel
