Screw barrel for food machinery

For good plasticizing effect,we have different designs of screw and barrel for extruder machine to meet customer's demand.Our factory manufactures with high-quality material, 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.

Specification 

Product Name	Melt blown fabric screw and barrel for masksscrew and barrel manufacturer
Base Material (steel)	38 CrMoAlA(JIS SACM645); 42 CrMo(AISI 4140);Cr12MoV(JIS SKD-11); 4Cr5MoSiV1(JIS SKD-61)
Process ( hot treatment)	Nitriding treatment 72 hoursBimetallic treatment
Hardness after hardening and tempering	HB260-320
Nitrided Hardness	HV900-1000
Nitrided Case Depth	0.5 - 0.8 mm
Nitrided Brittleness	Less than Grade 2
Surface Roughness	Ra 0.4
Screw Straightness	0.015 mm
Bimetallic Hardness	HRC 53-65
Bimetallic Depth	0.8-2.0mm for screw ; 1~3mm for barrel
Chromium plating Depth	0.05~0.10mm
Hardess of surface chromium-plating after Nitriding	HV≥950HV

Grade available:

1. Standard grade: 38CrMoAlA + nitriding 96 hours
2. Bimetallic grade: 38CrMoAlA + bimetallic alloy
3. TC-A grade: Tungsten carbide 35%
4. TC-B grade: Tungsten carbide 25%
5. TC-C grade: Tungsten carbide 15%

Our Benefits
1. Precision Melt Control and Mixing
Injection molding machine screw barrels ensure precise melt control and thorough mixing of additives, colorants, and fillers into the polymer melt. This results in uniform melt quality and enhanced part aesthetics.
2. Extended Service Life and Durability
Our screw barrels are manufactured from high-quality materials, including nitrided steel, bimetallic alloys, and tungsten carbide coatings, to withstand abrasive wear and corrosion. This ensures extended service life and reduced maintenance downtime.
3. Optimized Injection Molding Parameters
By optimizing screw design and material selection, our screw barrels enhance injection molding parameters such as cycle time, shot size consistency, and part dimensional stability. This improves overall production efficiency and reduces scrap rates.
4. Customization Options
We offer customization options to meet specific customer requirements, including screw diameter, length-to-diameter ratio (L/D), flight geometry, material composition, and surface treatments. Our engineering expertise ensures that each injection molding machine screw barrel is optimized for maximum performance and reliability.