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Solutions to Uneven Blasting of Steel Plate Shot Blasting Machine
发布时间:
2026-07-31
Many steel structure manufacturers frequently encounter uneven shot blasting on
Many steel structure manufacturers frequently encounter uneven shot blasting on plate surfaces when operating through-type steel plate shot blasting machines, resulting in incomplete local rust removal, light and dark color differences, and inconsistent anchor pattern depths. This not only compromises the surface quality of steel plates, but also leads to poor paint adhesion, coating peeling and increased rework rates in subsequent painting processes. In fact, uneven blasting is not a complex equipment fault; it can be resolved rapidly once the root causes are identified.
The most common cause of uneven shot blasting in steel plate shot blasting machines is misaligned blast wheel parameters. Displaced control cages and unevenly worn impeller blades will shift the blasting angle of steel shot and create inconsistent coverage areas, leaving partial regions of the steel plate untreated by abrasives. During daily production, regularly calibrate the blast wheel angles and replace worn blades promptly to ensure the blasting ranges of all blast wheels overlap evenly without untreated blind zones.
Secondly, issues related to steel shot quality and circulation also lead to uneven blasting intensity. If the steel shot is mixed with excessive broken shot and dust, or the abrasive supply volume is insufficient, the impact force will vary greatly. Poor separation performance of the separator and clogged screen mesh allow contaminants to circulate continuously. It is recommended to screen abrasives regularly and supplement new steel shot to maintain uniform grain size and qualified purity of the shot.
Finally, problems arising from workpiece conveying and equipment commissioning also contribute to uneven blasting. Excessively fast steel plate conveying speed, roller conveyor deviation, and skewed plate placement all result in insufficient blasting on one side. Adjust the conveying speed reasonably according to plate thickness and rust degree to ensure steel plates pass through the blasting zone at a steady uniform speed. Timely inspection and troubleshooting of the above points can completely eliminate uneven blasting defects of steel plate shot blasting machines, stabilize the quality of plate pretreatment and cut production rework costs.
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