Qingdao Puhua Heavy Industry Machinery Co., Ltd., based on the specific needs of the precision manufacturing industry, has developed the QWD series mesh belt shot blasting machine. This equipment is specifically designed for easily damaged precision workpieces such as thin-walled castings, aluminum alloy parts, and ceramic parts. With its gentle, continuous, and uniform treatment characteristics, it has become a key piece of equipment for improving surface quality in industries such as automotive parts and precision casting.
The core of the equipment lies in its horizontal through-type mesh belt conveyor mechanism. A high-strength, wear-resistant steel wire woven mesh belt operates at a uniform speed under frequency conversion drive. Workpieces are laid flat in a single layer on the belt and smoothly pass through the shot blasting chamber. This conveying method fundamentally avoids the stacking and collision of workpieces, making it particularly suitable for processing parts with high surface finish requirements and fragile structures.
Multiple high-efficiency shot blasters are scientifically arranged above and on the sides of the shot blasting chamber, forming a composite shot flow field covering the upper and sides of the workpiece. The blasting angle and intensity can be precisely adjusted according to the workpiece material (such as aluminum alloy, zinc alloy, ceramic) and process requirements, ensuring thorough surface cleaning while avoiding workpiece deformation or dimensional deviations due to excessive impact force.
The equipment integrates a highly efficient shot circulation and separation system. Used shot and stripped impurities are separated through multi-stage air and magnetic separation, ensuring that the shot returning to the shot blaster maintains high cleanliness. This closed-loop design not only guarantees stable shot blasting quality but also significantly reduces abrasive wear, achieving economical and environmentally friendly operation.
**Stable and Uniform Processing Quality:** The combination of uniform conveyor belt transport and multi-directional shot blasting ensures a high degree of consistency in surface cleanliness and roughness for workpieces within the same batch. Actual application data shows that the surface cleanliness of the treated workpieces can reach Sa2.5 level (or Be level), and the roughness (Ra value) can be precisely controlled within the 3-15 micrometer range, fully meeting the process requirements of high-end spraying and bonding.
**Fully Automated Continuous Production:** From loading and shot blasting to automatic unloading, the entire process requires no manual intervention and can be easily integrated with upstream and downstream processes (such as cleaning and drying) to form an automated production line. This continuous operation mode greatly improves production efficiency and is particularly suitable for large-scale production scenarios with stable orders and large batches.
**Excellent Workpiece Adaptability and Protection:** The equipment excels at processing the following types of workpieces:
Thin-walled and lightweight alloy parts: such as automotive aluminum alloy housings and motor end caps, effectively preventing deformation.
Precision structural parts: such as gears, connecting rods, and small shaft parts, ensuring uniform processing without dead angles.
Brittle non-metallic parts, such as ceramic insulators and wear-resistant ceramic sheets, can be safely cleaned by adjusting parameters.
We provide full-process support for our QWD series equipment, from solution design to long-term maintenance. Our technical team can provide customized equipment specifications and process solutions based on the characteristics of the customer's workpiece, production capacity requirements, and workshop layout. The equipment adopts a modular design, and key components such as the mesh belt, shot blasting blades, and sorting screens are easy to maintain and replace, maximizing equipment uptime.
With its deep expertise in the field of precision surface treatment, Qingdao Puhua Heavy Industry's QWD series mesh belt shot blasting machines have become a reliable choice for many manufacturing companies pursuing high quality. It not only solves the pain points of traditional precision workpiece cleaning but also provides a solid equipment foundation for companies to enhance product added value and establish a competitive quality advantage through stable process output. We sincerely invite industry colleagues to visit and discuss how to create the most suitable surface treatment solution for your precision parts.
