- +86-13156373861
- info@hqamurblasting.com
- No. 867 Century Avenue, West Coast New Area, Qingdao,China.
In heavy steel fabrication, structural construction, and bridge engineering, oversized steel plates and H-beams require thorough mill scale removal and uniform surface profiling before automated cutting and welding. For high-throughput processing lines, raw structural members arrive with heavy oxidation, oil films, and atmospheric rust. Incomplete descaling or uncontrolled kinetic impact leads to web distortion, poor weld seam integrity, and premature coating delamination. HOAMUR designs robust, continuous roller conveyor processing lines to eliminate pre-treatment bottlenecks while protecting structural straightness and dimensional tolerances.
To achieve continuous inline production, our heavy-duty roller conveyor shot blasting systems integrate directly with transverse loading arms, preheating ovens, and automated preservation lines. Workpieces travel steadily through the blasting chamber via variable-frequency driven rollers. Direct-drive, high-efficiency centrifugal blast wheels are precisely angled to deliver 100% abrasive media coverage across outer flanges, inner web corners, and edge margins without thermal deformation. By adjusting blast wheel velocity and conveyor travel speeds, the system maintains consistent anchor profiles regardless of fluctuating mill scale thickness.
Raw steel plates stored in open yards often carry surface moisture, condensation, and protective rolling grease that contaminate abrasive media and choke mechanical separators. HOAMUR incorporates an automated in-line preheating oven upstream of the blasting chamber. High-efficiency hot-air circulation dries the plate surface and carbonizes oil residue, accelerating descaling efficiency by 25%. Downstream, synchronized rotating nylon brushes and high-pressure air knives sweep and blow leftover steel shot from horizontal plates, directing reclaimed media back to the longitudinal screw conveyors to prevent abrasive loss in the painting stage. The heavy-duty height-adjustable brush cylinder automatically adapts to varied plate thicknesses, while dual overhead centrifugal blow-off fans feed angled air nozzles to purge residual dust and media from recesses. This closed-loop recovery system eliminates manual sweeping labor, prevents abrasive carry-over into the paint booth, and protects downstream roller conveyors from wear.
Maintaining precise plate flatness when blasting thin structural web plates requires strictly calibrated kinetic balancing. HOAMUR positions blast wheels in paired, opposing layouts along the upper and lower decks of the blasting chamber. Dynamic impact forces counter each other simultaneously, eliminating localized residual compressive stress and preventing bow or wave distortion. This stable mechanical equilibrium allows fabricators to process plates down to 5mm thickness without supplementary straightening procedures.
For multi-shift high-load operations, the blasting chamber is fully shielded with thick rolled Mn13 high-manganese alloy liners, offering exceptional wear resistance under continuous metal shot bombardment. Integrated pulse-jet cartridge dust collectors maintain negative chamber pressure, extracting fine dust particles and rust scale instantly to achieve an emission level below 10 mg/m³, meeting stringent international clean factory standards.
High-efficiency gas or electric heating eliminates surface moisture and grease, increasing shot blasting descaling rates by over 20%.
Optimized blast wheel arrangements cross-fire abrasive to eradicate scale from H-beam inner corners and flanges without blind spots.
Opposing kinetic force vectors neutralize surface stress, preventing distortion on thin steel plates down to 5mm thickness.
Synchronized roller brushes and high-pressure blowers eliminate residual abrasive from plate surfaces before entering paint booths.
Automated airless spray guns apply uniform zinc primer immediately after descaling to provide lasting inter-process rust protection.
HOAMUR configures automated, heavy-duty roller conveyor shot blasting and preservation setups aligned with international structural steel fabrication standards and continuous production lines.
Our engineering team is ready to design the right shot blasting and surface preparation solution tailored to your production needs.
