Hongxu Combined Roller Shot Blasting Machine is a specialized equipment used for texturing the surface of rollers. It forms a uniform micro-rough structure by shooting metal shots at high speed onto the roller surface, thereby improving the roller's performance during rolling (such as sheet surface quality and anti-adhesion properties). The following is a detailed introduction to this equipment:
I. Core Functions and Roles
1. Roller Surface Texturing
- Creates a uniform rough texture on the roller surface (Ra value controllable), enhancing the surface adhesion, coating performance, and anti-reflectivity of rolled metal sheets (e.g., automotive sheets, home appliance sheets).
2. Strengthening Treatment
- Improves the fatigue strength and wear resistance of the roller surface through high-speed shot impact, extending service life.
3. Cleaning Pretreatment
- Removes oxide layers, oil stains, or residues from the roller surface, providing a clean base for subsequent processes (e.g., coating, spraying).
II. Equipment Composition
1. Shot Blasting System
- Shot Blasting Machine: Core component, which shoots shots (steel shots, ceramic shots, etc.) onto the roller surface via high-speed rotation of the impeller.
- Shot Circulation System: Includes recovery screw, separator, elevator, etc., enabling automatic recovery and recycling of shots.
2. Roller Clamping and Rotation Mechanism
- Uses a variable-frequency motor to drive the roller to rotate at a constant speed, ensuring uniform shot coverage.
3. Dust Removal System
- Equipped with high-efficiency cartridge or bag dust collectors to handle dust generated during shot blasting, meeting environmental requirements.
4. Control System
- PLC or CNC system, allowing adjustment of parameters such as shot blasting speed, roller rotation speed, and shot flow rate for automated operation.
III. Key Process Parameters
1. Shot Selection
- Material: Cast steel shots, stainless steel shots, ceramic shots (selected based on roller material and texturing requirements).
- Size: Typically 0.2~1.0 mm; smaller shots refine roughness, while larger shots increase impact strength.
2. Blasting Parameters
- Shot Blasting Speed: 60~100 m/s (affects surface roughness and strengthening effect).
- Coverage: Must reach 100% to avoid missed areas.
3. Roller Motion Control
- Rotation speed matched with the movement speed of the shot blasting machine to ensure uniform surface treatment.
IV. Application Scenarios
- Cold Rolling Rollers: Used in the production of high-end sheets such as automotive sheets and galvanized sheets to prevent slipping or sticking during rolling.
- Hot Rolling Rollers: Enhances wear resistance and extends roller surface life.
- Repair and Remanufacturing: Performs surface texturing repair on old rollers, detects defects, and reduces costs.
V. Advantages and Limitations
- Advantages:
- Low cost, high efficiency, suitable for large-scale processing;
- Can simultaneously achieve cleaning, texturing, and strengthening effects.
- Limitations:
- Higher difficulty in controlling uniformity for rollers with complex shapes.
VII. Comparison with Other Texturing Technologies
| Technology | Roller Shot Blasting Texturing | Laser Texturing | EDM Texturing |
|--------------------------|--------------------------------|-------------------------|-----------------------|
| Roughness Control | High | Precise | Medium |
(Ra 1~10μm) (Ra 0.5~5μm) (Ra 2~8μm)
| Cost | Low | High | Medium |
| Efficiency | High | Medium-Low | Medium |
| Applicable Scenarios | Large-scale, general needs | High precision, small batch | Special materials or complex shapes |
If you have specific needs (such as equipment selection, troubleshooting, or process optimization), further details can be provided for targeted solutions!