Cold Rolled Continuous Screw Flight
Continuous Cold-Rolled Screw Flight
The Backbone of Efficient Material Handling in Industrial Machinery
✓ Effortless procedure
✓ Exquisite arrangements
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Product Description
The production of cold-rolled continuous helical blades starts with flat steel strips — the raw material that undergoes precise cold-rolling operations. Unlike hot rolling (which requires high temperatures), cold rolling is performed at or near room temperature — a key distinction that defines the product’s quality.
This cold-working process serves two critical purposes:
- Shapes the steel strip into the continuous helical form that characterizes the product
- Significantly enhances the steel’s mechanical properties
During cold rolling, the steel strip passes through specially designed rollers that gradually bend and twist it into the desired helical shape. This process ensures uniformity in pitch, diameter, and thickness along the entire blade length — a vital factor for consistent performance in all applications.
The absence of high heat prevents steel oxidation and scaling, resulting in a smooth, clean surface finish. Additionally, cold working refines and aligns the metal’s grain structure — boosting hardness, strength, and dimensional accuracy. The end result is a robust, reliable product built to withstand industrial demands.
Smooth Surface Finish
Close-up view highlighting the clean, oxidation-free surface of the helical blade
Continuous Helical Design
Full-length view of the seamless helical structure without welded joints
Agricultural Application
Blade installed in a grain conveyor for efficient bulk material handling
Food Processing Use
Food-grade stainless steel blade in a dough mixer meeting hygiene standards
Mining Industry Application
Blade handling abrasive aggregates in a mining conveyor system
Dimensional Uniformity
Cross-section view demonstrating consistent thickness and diameter
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Superior Mechanical Properties
Cold rolling enhances hardness (by 15-30% vs. hot rolling) and toughness, improving wear and impact resistance—critical for abrasive materials (e.g., ore, coal).
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Cost-Effectiveness
Cold rolling is a continuous process, reducing material waste (vs. casting) and eliminating the need for post-processing (e.g., grinding for welded flights).
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Smooth Surface
The cold rolling process creates a smooth, burr-free surface, minimizing material adhesion (critical for sticky materials like sludge or dough) and easing cleaning (for food/pharmaceuticals).
| Specification | Details |
|---|---|
| Material | Carbon steel, stainless steel, food-grade stainless steel |
| Pitch | 50mm – 500mm (customizable for specific applications) |
| Diameter | 80mm – 800mm (suitable for all standard equipment models) |
| Thickness | 2mm – 8mm (varies by material strength requirements) |
| Length | 1m – 10m (custom lengths available for special equipment) |
| Strip Max Width | 150mm |
Application
Cold Rolled Screw Flight
As a core component of screw conveyors and similar equipment, cold rolled screw flights are favored for their high precision, uniform wall thickness, excellent mechanical properties (wear resistance, toughness), and cost-effectiveness. Their primary function is to efficiently convey, mix, extrude, or process bulk materials. Specific applications are as follows:
Bulk Material Handling (Core Field)
Serving as the core of screw conveyors, they are adapted for bulk material transportation across industries. In agriculture, they are used for lifting and mixing grains, feed, etc.; in mining, they convey coal, ore, etc., requiring wear-resistant materials; in construction, they are suitable for cement, asphalt, etc., with some needing heat resistance; in food processing, stainless steel materials are adopted to meet hygiene standards.
Plastic & Rubber Processings
Applied in plastic/rubber extrusion and injection molding equipment, they ensure uniform melting, mixing, and stable conveyance of raw materials, improving product quality. They also need wear resistance to withstand abrasion from fillers.
Chemical & Pharmaceutical Industry
Stainless steel is mostly used for cold rolled screw flights here, featuring corrosion resistance and easy cleanability. They can convey corrosive chemicals, toxic powders, or pharmaceutical raw materials, complying with standards like GMP.
Environmental Protection & Waste Treatment
Adapted for sludge dewatering, waste sorting, and biomass pelletizing equipment, they can handle wet, sticky, and abrasive waste, ensuring reliable operation of the equipment.
Food & Beverage Industry (Specialized Scenarios)
Stainless steel or screw flights with non-stick coatings are used, suitable for bakery (dough, flour), beverage (fruit pulp), and meat processing equipment, balancing hygiene and anti-adhesion requirements.