Product Details

Specifications

1) lowest price with high quality for screw and barrel
2) Based material: 38Crmoala
3) Application: rubber & plastic machine

Screw and Barrel for rubber extruded profile/sheet/pelletizing/pipe/foaming

Product Description

Rubber Screw and Barrel:

Screw diameter: OD30MM-300MM

Length to diameter ratio: L/D=4-20

Types of pin screw and barrel: OD75MM-200MM

Cold/heat feeding material screw and barrel: OD30MM-250MM

Instructions for 38 crmoala Screw:

1.We are a professional company specialized in manufacturing many types of screw, the barrel can be applied on all types of injection moulding machine,rubber hot-feeding extruder, rubber cold-feeding extruder, pin barrel cold feed extruder, plastic extruder with different specifications.
2.The models of screw include:

Variable pitch and variable depth, variable pitch and equal depth, variable depth and equal pitch, and equal depth and pitch.

Groove multi-die type, composite type, mixing type and separating type.

3. The material of screw: manufactured with high-quality nitro alloy steel, applying the method of hardening and tempering and nitriding, thus it enjoys the characteristics of long working life, wear resistance, and anti corrosion. Besides, the technique of hard alloy spraying or chrome plating can be used on the working surface of screw, which will make it have better using effectiveness.

Information:

MATERIAL	HEAT-TREATMENT
38CRMOALA	NITRIDING TREATMENT
42CRMO	BIMETALLIC ALLOY COATING
40CR	HARD-CHROME ELECTROPLATED
SKD11	VACUUM QUENCHING

SKD61

HIGH-FREQUENCY

Technical Parameter:

Depth of Nitration	0.5-0.8mm
Hardness of Nitration	950-1020Hv
Roughness of surface	Ra 0.4um
Fragility of Nitration	Less than grade 1
Linearity of screw	0.015mm
Depth of double alloys	2-3mm
Hardness of double alloys	HRC58-62