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Screw Wear-Resistant and Anti-Corrosion Spraying is a specialized surface engineering service that applies a precision-engineered Tungsten Carbide Coating to industrial screws, extruder screws, injection molding screws, and conveyor screws to dramatically enhance their hardness, abrasion resistance, and corrosion protection. Using advanced thermal spray technology, a dense, metallurgically bonded carbide layer is fused to the screw flights and root surfaces, creating an ultra-hard working barrier that withstands the most demanding processing conditions. The Tungsten Carbide Coating is applied with precise thickness control and finished to tight tolerances, restoring worn screws to better-than-new condition and extending the service life of new screws for manufacturers worldwide.
Applications
This spraying service is widely used across global industries including plastics and rubber extrusion, injection molding, food and beverage processing, pharmaceutical manufacturing, chemical processing, lithium battery material production, agriculture, and mineral processing. It is applied to single and twin screw extruders, injection molding machines, screw conveyors, screw feeders, pelletizers, and food processing screws that handle abrasive fillers, corrosive polymers, glass fiber reinforced plastics, mineral powders, and aggressive chemical compounds.
Specifications
Parameter
Details
Screw Diameter
20mm to 300mm
Maximum Screw Length
Up to 6000mm
Base Material
38CrMoAl, 42CrMo, SS304, SS316L, tool steel
Coating Type
Tungsten Carbide Coating
Coating Thickness
0.05mm to 0.5mm
Surface Hardness
1100 HV to 1500 HV
Surface Roughness
Ra 0.2 to Ra 0.8
Bond Strength
50 MPa minimum
Operating Temperature
-20C to 500C
Certification
CE, ISO 9001
Advantages
Screw Wear-Resistant and Anti-Corrosion Spraying with Tungsten Carbide Coating delivers significant advantages for industrial processors around the world. First, the Tungsten Carbide Coating provides outstanding abrasion resistance on screw flights and root surfaces, extending screw service life by up to five times compared to standard nitrided or chrome-plated screws when processing glass fiber reinforced plastics, mineral fillers, ceramic powders, and other highly abrasive materials. Second, the dense, non-porous carbide layer provides excellent corrosion protection against acidic polymers, halogenated materials, chemical additives, and moisture, preventing pitting and degradation that would otherwise compromise product quality and dimensional accuracy. Third, the precision-finished carbide surface reduces friction and material adhesion, improving melt uniformity, output consistency, and energy efficiency while reducing the risk of material degradation and black specks in extruded products. Fourth, the spraying service can restore worn or damaged screws to original specifications at a fraction of the cost of replacement, minimizing capital expenditure and reducing equipment downtime. Fifth, the coating is applied with precise thickness control and finished to tight tolerances, ensuring compatibility with existing barrels and tooling without modification, and is available for all major screw and extruder brands. Finally, by extending screw life, reducing maintenance and replacement costs, improving product consistency, and lowering total cost of ownership, Screw Wear-Resistant and Anti-Corrosion Spraying with Tungsten Carbide Coating delivers a strong return on investment for customers in every major global market.
FAQ
Q1: What types of screws can be sprayed? A: The service covers single and twin extruder screws, injection molding screws, screw conveyors, feeders, and pelletizers with diameters from 20mm to 300mm and lengths up to 6000mm.
Q2: Why is Tungsten Carbide Coating applied to screws? A: The coating provides superior abrasion and corrosion resistance, extending screw life by up to five times compared to nitrided or chrome-plated screws when processing glass fiber, mineral fillers, and corrosive polymers.
Q3: Can worn screws be restored with this spraying service? A: Yes, the service restores worn or damaged screws to original specifications at a fraction of replacement cost, with precise thickness control and tight tolerance finishing.
Q4: Does the coating affect screw performance and compatibility? A: No, the precision-finished carbide surface reduces friction, improves melt uniformity and output consistency, and is finished to tight tolerances for full compatibility with existing barrels and tooling.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2006
Total Annual:
7000000-10000000
Employee Number:
150~200
Ecer Certification：
Verified Supplier
Wuxi Li Chen Machinery Manufacturing Co., Ltd. is an innovative technology enterprise specializing in the development and technical services of thermal spraying technology. The company undertakes various spraying processing and mechanical processing businesses. It has strong technical strength in th... Wuxi Li Chen Machinery Manufacturing Co., Ltd. is an innovative technology enterprise specializing in the development and technical services of thermal spraying technology. The company undertakes various spraying processing and mechanical processing businesses. It has strong technical strength in th...
