Recently, a QWD wire mesh belt shot blasting machine customized by our company for a Vietnamese client was successfully installed, commissioned, and officially put into production. The successful delivery of this equipment marks a further expansion of our company in the Southeast Asian market and provides strong support for improving the surface treatment capabilities of the local automotive parts and construction formwork industries.
This client is a comprehensive manufacturing enterprise in Vietnam, with businesses covering two main sectors: automotive wheel hub production and construction aluminum formwork processing. With the rapid development of the local automotive and construction industries, the client has placed higher demands on the quality and efficiency of surface treatment for wheel hubs and aluminum formwork. The client wanted the new equipment to simultaneously meet the cleaning needs of two different types of workpieces: wheel hubs and aluminum formwork.
Before introducing a specific case, let's briefly explain the applicable workpiece range of the QWD mesh belt shot blasting machine to help understand why the client chose this model.
The mesh belt shot blasting machine uses a continuous metal mesh belt conveyor. Workpieces are laid flat on the mesh belt and pass through the shot blasting chamber at a uniform speed, receiving shot from above and the sides. This stable, non-tumbling operation is particularly suitable for the surface treatment of the following types of workpieces:
**Automotive Wheel Hubs** Aluminum alloy wheel hubs often have oxide scale and burrs on their surface after casting and machining. The mesh belt shot blasting machine can smoothly convey and clean the hubs without suspension or tumbling, avoiding damage caused by collisions between hubs.
**Aluminum Formwork** After use, aluminum formwork used in construction has concrete residue and cement slurry adhering to its surface. The mesh belt shot blasting machine can clean aluminum formwork in batches, restoring surface smoothness and extending the service life of the formwork.
**Brake Pads and Clutch Plates** Friction pads in automotive braking systems require uniform surface roughness. The mesh belt shot blasting machine can smoothly clean thin sheet-like workpieces without deformation or damage.
**Stamped Parts and Spring Sheets** Various thin-walled stamped parts and elastic elements can be deburred and surface-cleaned using a mesh belt shot blasting machine. The process is smooth and does not damage the workpiece.
**Precision Castings and Die Castings** Small precision castings and aluminum alloy die castings can be cleaned in batches using a mesh belt shot blasting machine. It offers high efficiency and stable quality.
**Electronic Component Housings** Housings for electronic components such as heat sinks and shielding covers require fine surface treatment and must not be deformed.
The customer's existing equipment is a hook-type shot blasting machine, which presents the following problems in actual use:
**Low Efficiency of Wheel Hub Cleaning** Wheel hubs need to be suspended individually on the hook, resulting in long loading and unloading times and hindering large-scale continuous production.
**Inconvenient Aluminum Template Cleaning** Aluminum templates are large and flat, making them difficult to secure in hook-type equipment, resulting in unsatisfactory cleaning effects.
**Workpiece Damage** Wheel hubs and aluminum templates are prone to bumps and damage during hanging and turning.
**Manual Operation Required** Loading, unloading, and flipping all require manual operation, resulting in high labor intensity.
The customer desired a new machine capable of efficient, continuous, and damage-free cleaning of wheel hubs and aluminum templates.
Based on the customer's workpiece characteristics and production requirements, our technical team customized a QWD mesh belt shot blasting machine for them. The main configurations are as follows:
**Metal Mesh Belt Conveyor System** Utilizes a high-strength metal mesh belt with strong load-bearing capacity and wear resistance. The belt speed is frequency-adjustable, allowing for speed adjustments based on the different cleaning requirements of the wheel hubs and aluminum templates, achieving continuous and stable conveying.
**Multiple Shot Blasting Units Layout** Multiple high-efficiency shot blasters are configured above and to the sides of the shot blasting chamber, projecting shot onto the workpieces from different angles, ensuring uniform impact on all surfaces of the wheel hub and aluminum template, resulting in thorough cleaning without blind spots.
**Customized Mesh Belt Width** The mesh belt width is customized based on the customer's maximum aluminum template width and wheel hub size, ensuring that all types of workpieces can be stably placed on the mesh belt and pass through the shot blasting chamber.
**Workpiece Positioning Device** For wheel hub cleaning, a positioning device ensures the wheel hub remains stable on the conveyor belt, guaranteeing uniform shot coverage.
**Shot Circulation System** Equipped with a screw conveyor, bucket elevator, and high-efficiency separator, this system enables automatic shot recovery, screening, and recycling, reducing abrasive consumption.
**High-Efficiency Dust Removal System** Equipped with a high-efficiency cartridge dust collector, ensuring dust emission concentrations meet local Vietnamese environmental standards.
**PLC Control System** Enables one-button start, automatic operation, and fault alarm functions. It can store multiple sets of process parameters for quick switching between different workpieces, such as wheel hubs and aluminum templates.
After the equipment was put into operation, the customer experienced a significant improvement in the cleaning efficiency of wheel hubs and aluminum templates. Continuous conveyor belt operation enabled large-scale continuous processing; wheel hubs no longer needed to be suspended individually, and aluminum templates could be laid flat for passage, greatly increasing processing speed compared to the previous method. The cleaning effect was stable, with good batch-to-batch consistency, and no damage to the surfaces of wheel hubs and aluminum templates.
The customer's production manager stated, "This QWD mesh belt shot blasting machine solved our cleaning challenges for both wheel hubs and aluminum templates. Both different types of workpieces can be cleaned efficiently on this machine with excellent results and no damage."
The QWD mesh belt shot blasting machine delivered this time, through its continuous metal mesh belt conveyor, multi-blaster layout, and PLC automatic control configuration, helped the customer achieve continuous, automated, and damage-free cleaning of wheel hubs and aluminum templates, significantly improving efficiency and reducing labor costs and workpiece damage rates.
This case also further validates the core value of mesh belt shot blasting machines in cleaning flat parts and impact-sensitive workpieces such as wheel hubs, aluminum templates, and brake pads. Our company will continue to monitor the equipment's operation and provide timely technical support and after-sales guarantee for the customer.
**A:** QWD mesh belt shot blasting machines are suitable for cleaning flat and thin-walled parts that are susceptible to impact and deformation, such as automotive wheel hubs, aluminum templates, brake pads, clutch discs, stamped parts, spring plates, precision castings, die castings, and electronic component housings.
**A:** Mesh belt shot blasting machines use a flat conveyor system, where workpieces pass smoothly through the blasting chamber on the mesh belt without tumbling or collision. This is suitable for workpieces that are susceptible to impact and deformation. Crawler shot blasting machines use a tumbling cleaning method, where workpieces tumble inside the crawler rollers. This is suitable for small workpieces that are resistant to impact.
**A:** Yes. Aluminum templates are a typical application of mesh belt shot blasting machines. The aluminum templates are laid flat on the mesh belt and pass through the blasting chamber at a uniform speed, effectively removing surface concrete residue. The process is smooth and does not damage the template.
A: The QWD mesh belt shot blasting machine is equipped with a workpiece positioning device that keeps the wheel hubs in a stable position on the mesh belt, ensuring uniform shot coverage and preventing collisions between hubs.
A: The mesh belt shot blasting machine uses a high-strength metal mesh belt, which is highly wear-resistant and impact-resistant, and has a long service life under normal operating conditions. The mesh belt has a modular design, making it easy to replace and maintain.
A: After cleaning with the mesh belt shot blasting machine, the surface of the workpiece is completely free of oxide scale, rust, and residue, exhibiting a uniform metallic luster. The cleanliness level can reach Sa2.5 standard, providing a good adhesion base for subsequent coating.
A: Yes. Our company can customize the mesh belt width, number and configuration of shot blasters, conveyor speed range, and control system functions according to workpiece size, production requirements, and site conditions. For more information on the technical specifications or customized solutions for QWD mesh belt shot blasting machines, please contact our technical team.
