Continuous Pass-Through Roller Conveyor Shot Blasting Machine

1. Brief Profile

The Continuous Pass-Through Roller Conveyor Shot Blasting Machine is a fully automated surface treatment system designed for high-volume industrial applications. It integrates a roller conveyor system with advanced shot blasting technology to efficiently clean, descale, and strengthen metal workpieces. By utilizing high-velocity steel shots or abrasives, the machine removes rust, welding slag, and surface contaminants while improving coating adhesion. Its continuous operation mode enables seamless processing of large batches, making it ideal for industries such as automotive, shipbuilding, steel fabrication, and construction.

This machine is engineered to handle a wide range of workpiece sizes and shapes, including steel plates, beams (H-beam, I-beam, C-beam), pipes, and structural profiles. Its modular design allows for customization to meet specific production requirements, ensuring flexibility and scalability. With certifications such as CE, ISO9001, and TUV, it adheres to international quality and safety standards.

2. Application

The Continuous Pass-Through Roller Conveyor Shot Blasting Machine is widely used in industries requiring high-precision surface preparation and coating adhesion enhancement. Key applications include:

Steel Structure Fabrication:

Cleaning and descaling of steel plates, beams, and profiles for bridge construction, shipbuilding, and industrial buildings.

Removal of welding residues and mill scale to improve paint adhesion and corrosion resistance.

Automotive Manufacturing:

Surface treatment of truck frames, chassis components, and engine parts to eliminate rust and prepare for coating.

Enhancing the durability of automotive structural parts through controlled shot blasting.

Pipe and Tube Processing:

Internal and external cleaning of steel pipes to remove oxide layers and improve weld quality.

Preparing pipe surfaces for anti-corrosion coatings in oil and gas pipelines.

Construction and Infrastructure:

Treating aluminum formwork, rebar, and precast concrete molds to extend service life.

Cleaning structural steel for high-rise buildings and stadiums.

Heavy Machinery:

Surface preparation of diesel engine blocks, motor housings, and valve components for remanufacturing.

Removing forging scales and improving fatigue resistance in critical parts.

3. Features

The machine incorporates several advanced features to optimize performance and reliability:

High-Efficiency Blast Wheels:

Equipped with cantilever centrifugal turbines featuring curved blades for increased blasting force.

Optional Taiwan-made special alloy blades with a lifespan of 1,000–1,500 hours.

Durable Liner Material:

Blasting chamber lined with cast manganese steel (Mn13) or rolled manganese steel for extended service life (1–2 years).

Precision Roller Conveyor:

Frequency-controlled conveyor system adjusts speed to accommodate different workpiece sizes and blasting intensities.

Supports workpieces weighing up to 5,000 kg per meter.

Advanced Abrasive Recycling:

Full-shutter air wash separator with three-stage filtration to efficiently separate dust from reusable abrasives.

Reduces material waste and maintains consistent cleaning performance.

Dust Extraction System:

Pulse-jet bag-type dust collector with >99% efficiency, compliant with environmental regulations.

Optional cartridge-type collectors for enhanced filtration.

Safety and Automation:

PLC-controlled operation with electrical interlocks, failure self-detection, and alarms.

Full-range automatic control for unmanned operation.

Customization Options:

Modular design allows integration with preheating, painting, and drying systems for turnkey solutions.

Non-standard models available for specialized workpieces (e.g., oversized beams, complex geometries).

4. Main Parts

The machine consists of the following core components:

Blast Chamber:

Enclosed steel structure housing multiple blast wheels for uniform coverage.

Lined with wear-resistant Mn13 plates to protect against abrasive impact.

Roller Conveyor System:

Heavy-duty rollers driven by frequency-controlled motors for precise speed adjustment.

Supports continuous or step-by-step movement of workpieces.

Blast Wheel Assembly:

High-speed turbines (up to 3,000 RPM) propel steel shots at 80–90 m/s.

Curved blades maximize kinetic energy transfer to workpieces.

Abrasive Recycling System:

Screw conveyors transport used abrasives to the elevator and separator.

Air wash separator removes dust and broken shots before recycling.

Dust Collection Unit:

Pulse-jet bags or cartridge filters capture fine particles.

Automated cleaning cycles maintain consistent airflow.

Control Panel:

PLC-based interface for parameter settings (conveyor speed, blast intensity).

Touchscreen HMI with real-time monitoring and diagnostics.

5. Basic Parameters

Parameter Specification

Model Range Q698, Q6912, Q6915, Q6920, Q6925, Q6930, Q6940

Workpiece Dimensions Width: 300–2,500 mm; Height: Up to 1,500 mm

Conveyor Speed 0.5–3 m/min (adjustable)

Blast Wheel Power 4 × 11 kW to 8 × 15 kW (depending on model)

Abrasive Capacity 4,000–8,000 kg

Dust Collector Capacity 24,000 m³/h (pulse-jet) or 30,000 m³/h (cartridge)

Noise Level ≤85 dB(A)

Power Supply 380V, 50Hz, 3-Phase

Total Weight 12,000–35,000 kg (depending on configuration)

Certifications CE, ISO9001, ISO10004, BV, TUV

Conclusion

The Continuous Pass-Through Roller Conveyor Shot Blasting Machine represents a state-of-the-art solution for industrial surface treatment. Its combination of high efficiency, durability, and automation makes it indispensable for sectors demanding precise and cost-effective metal cleaning. With customizable options and adherence to global standards, this machine ensures optimal performance and long-term reliability in demanding production environments.