A roll texturing shot blasting machine is a specialized device used for surface treatment of rolls. It primarily employs a shot blasting process to create a uniform roughness (texturing) on the roll surface, thereby improving the friction performance between the roll and the rolled material and enhancing rolling quality (e.g., surface uniformity of sheets, reduction of scratches, etc.). Below is a detailed introduction to this equipment:
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### **1. Main Functions**
- **Surface Texturing**: Creates micro-pit structures on the roll surface by high-speed projection of steel shots or ceramic shots, increasing roughness.
- **Cleaning and Strengthening**: Removes oxide scale, residual oil, and other contaminants from the roll surface while improving surface hardness and fatigue life.
- **Enhancing Rolling Effect**: Textured rolls improve lubrication conditions during rolling, reducing surface defects in strips and sheets.
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### **2. Core Components**
- **Shot Blasting System**:
- **Blast Wheel**: A high-speed rotating impeller projects shots onto the roll surface; core parts include the impeller, control cage, and directional sleeve.
- **Shot Material**: Commonly steel shots, ceramic shots, or steel wire cut shots, selected based on roll material (e.g., cast iron, alloy steel).
- **Roll Clamping and Rotation Device**:
- Ensures uniform rotation of the roll for even surface treatment.
- **Shot Circulation System**:
- Includes recovery units, separators (to remove broken shots and impurities), elevators, and storage hoppers.
- **Dust Collection System**:
- Filters dust generated during shot blasting to meet environmental standards (commonly using bag filters or cartridge filters).
- **Control System**:
- PLC or CNC system to adjust parameters such as blasting speed, roll rotation speed, and blasting time.
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### **3. Working Process**
1. **Clamping the Roll**: Secure the roll onto the equipment's rotating frame.
2. **Parameter Setting**: Set blasting intensity, rotation speed, time, etc., according to process requirements.
3. **Shot Blasting Treatment**: Start the blast wheel; shots impact the roll surface at high speed to form a textured structure.
4. **Cleaning and Recovery**: Shots are filtered through the circulation system for reuse, while dust is collected by the dust collection system.
5. **Quality Inspection**: Check surface roughness (Ra value) and uniformity, typically using a profilometer or microscope.
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### **4. Technical Parameters (Example)**
| Item | Parameter Range |
|------|----------|
| Applicable Roll Diameter | Ø100–1500mm |
| Blasting Speed | 60–100 m/s |
| Surface Roughness (Ra) | 1.0–10.0 μm (adjustable) |
| Motor Power | 15–75 kW (depending on model) |
| Processing Efficiency | Approximately 10–30 minutes per roll |
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### **5. Application Fields**
- **Steel Industry**: Hot rolling/cold rolling rolls, temper mill rolls.
- **Non-Ferrous Metals**: Roll treatment for aluminum plate and copper strip mills.
- **Special Materials**: Rolls for new energy battery foil and stainless steel.
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### **6. Advantages and Features**
- **Uniformity**: CNC adjustment ensures high consistency in texturing effects.
- **Environmental Friendliness**: Enclosed design plus dust collection system reduces pollution.
- **Automation**: Supports one-button operation, reducing manual intervention.
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### **7. Maintenance and Precautions**
- **Regular Inspection**: Check wear parts of the blast wheel (impeller, liners) and dust filter cartridges.
- **Shot Replenishment**: Add qualified shots promptly to avoid uneven treatment caused by broken shots.
- **Safe Operation**: Do not open the protective door while the equipment is running to prevent shot splashing.
If you need more specific selection advice or equipment manufacturer recommendations, please further describe the application scenario (e.g., roll type, production capacity requirements, etc.).