1.38CrMoAIA
2.Wear resistant and corrosion resistant
3.On time delivery
4.Technical supports

Material:High quality alloy steel

           1)38CrMoAlA

           2)42CrMo

           3)9Cr18MoV

Technics:1)Heat-treatment

              2)Nitriding treatment

              3)Hard-chrome electroplated

              4)Bimetallic-alloy coating spraying

Technical parameter

Nitriding depth:0.50-0.80mm

Nitriding hardness:900-1000HV

Nitriding brittleness:Less than grade 1

Surface roughtness: Ra0.4

Depth of nitration case:0.4-0.7mm
Hardness of nitration:HV900-1060 (HRc56°-65°)
Roughness of the surface:Ra 0.4μm
Screw straightness: 0.015mm/m
Chrome plating thickness: 0.01-0.1mm
Bimetal coating thickness 1.5-2.0mm
Material: Base material 38CrMoAlA, Welded inlay on the flight, prolong life of screw. Easy wearing parts of barrel feed inlet made from imported anti-wear alloy can be improvde abrasion performance.