Among various shot blasting equipment, roller conveyor shot blasting machines are the preferred solution for batch processing of regular workpieces such as plates and profiles due to their continuous operation characteristics. Qingdao Puhua Heavy Industry Machinery Co., Ltd. has been deeply involved in this field for over twenty years. Its Q69 series roller conveyor shot blasting machines integrate multiple innovative technologies and are widely used in industries such as steel structures, shipbuilding, and bridge construction.
This equipment adopts a roller conveyor system, where workpieces are continuously transported into the shot blasting chamber via rollers, achieving uninterrupted operation. The standard model can handle a width of up to 4 meters, with an adjustable conveyor speed ranging from 0.5 to 4 meters per minute, and a maximum daily processing capacity of 300 tons of steel plates. Compared to traditional hook-type equipment, production efficiency is increased by approximately 40%.
Equipped with a PLC automated control system, parameters can be precisely adjusted via a touchscreen. The system has multiple built-in material handling schemes; operators only need to select the workpiece type, and the equipment will automatically match parameters such as shot blasting intensity and conveyor speed. The real-time monitoring system records operating data and generates production reports, providing a basis for process optimization.
Multiple high-efficiency shot blasters are arranged in the shot blasting chamber. These shot blasters are precisely calculated and positioned to cover the workpiece surface from different angles. Specially designed guide plates ensure uniform shot distribution, avoiding processing dead zones. The treated surface cleanliness can reach Sa2.5 level, and the roughness is controlled within the optimal range of 40-70 micrometers.
The shot blasting chamber is constructed with 12mm thick manganese steel plates, and key areas are equipped with replaceable wear-resistant protective plates. The shot blaster blades are made of high-chromium alloy casting, with an average service life exceeding 800 hours. The roller conveyor surface undergoes special hardening treatment to ensure stable conveying performance under continuous operation.
The equipment is equipped with a three-stage dust removal system: a primary cyclone separator removes large particles, a intermediate cartridge dust collector filters fine dust, and a final high-efficiency filter ensures emissions meet standards. Actual measurement data shows that dust emission concentration is below 15mg/m³, complying with the GB 16297 national standard. The application of an energy recovery system reduces energy consumption by 25%.
Standard models can be customized in multiple dimensions according to customer needs: the roller conveyor spacing can be adjusted to accommodate different workpiece specifications, the number of shot blasters can be increased or decreased according to processing requirements, and the dust removal system can be configured differently based on site conditions. The equipment adopts a pitless installation design, reducing foundation construction costs.
The Q69 roller shot blasting machine has demonstrated superior performance in numerous major engineering projects. A bridge steel structure company used the equipment continuously for three months during peak production, processing over 20,000 tons of steel plates with a zero failure rate. Shipbuilding companies reported that the surface quality of the treated steel plates fully met the requirements for epoxy coating application, and the coating adhesion test results exceeded industry standards.
Qingdao Puhua Heavy Industry establishes a dedicated file for each piece of equipment, providing full-cycle technical services. During the installation phase, professional engineers provide on-site guidance to ensure optimal equipment operation. Operation training combines theoretical explanation with hands-on practice to ensure staff fully master equipment operation and maintenance skills. The company has established spare parts centers in major industrial areas, ensuring the delivery of commonly used parts within 24 hours.
With the transformation and upgrading of the manufacturing industry, surface treatment process requirements are increasingly stringent. Roller shot blasting machines are developing towards intelligent and energy-saving directions. Qingdao Puhua Heavy Industry's R&D team continuously upgrades its technology; the next generation of equipment will integrate IoT technology to achieve remote monitoring and intelligent diagnostic functions. In the future, specialized models adapted to the processing requirements of special materials will also be developed.
Choosing the right shot blasting equipment is crucial for improving product quality and reducing production costs. The Q69 roller shot blasting machine, with its stable performance and technological advantages, has become the preferred equipment for many companies. Qingdao Puhua Heavy Industry will continue to uphold its commitment to technological innovation, providing customers with superior surface treatment solutions and contributing to the high-quality development of Chinese manufacturing.
