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What are the common malfunctions and troubleshooting methods for shot blasting machines?
发布时间:
2026-07-31
Shot blasting machine malfunctions include abnormal shot blasting vibration, ins
Shot blasting machine malfunctions include abnormal shot blasting vibration, insufficient shot volume, poor dust removal effect, and screw conveyor failure. Troubleshooting methods involve replacing worn parts, adjusting equipment parameters, and optimizing maintenance procedures. The core principles are to regularly inspect vulnerable parts, ensure reasonable parameter settings, and establish a systematic maintenance plan to improve equipment stability and cleaning efficiency.
Common Faults and solutions
1.Vibration or abnormal noise from the blast wheels.
Causes: Uneven blade wear, uneven impeller weight, damaged bearings, or loose bolts.
Solution: Replace blades symmetrically, replace the impeller body, tighten bolts, and add grease.
2. Insufficient shot blasting quantity or poor cleaning effect.
Causes: Insufficient shot, excessively small shot size, misalignment of the control cage, or wear of the shot distributor.
Solutions: Replenish shot, replace with qualified shot, adjust the control cage angle, and replace the distributor.
3. Low efficiency of the dust removal system.
Causes: Clogged filter cartridges, fan reversing, air leakage in the duct, or improper airflow settings.
Solutions: Clean or replace the filter cartridges, rewire, seal any leaks, and adjust the butterfly valve to achieve an airflow velocity of 3–4 m/s.
4. The screw conveyor is not rotating.
Causes: Clogged feed, bent screw shaft, or seized bearing.
Solution: Clear the blockage, straighten the shaft, and replace the bearing.
5. Electrical or transmission failure.
Causes: Loose wiring, burnt-out components, belt slippage, or chain breakage.
Solution: Inspect the electrical box, replace damaged components, and adjust belt tension.
Systematic Maintenance Plan
Daily Maintenance: Check blade wear (replace when thickness drops to 50%), clean dust, and test the emergency stop button.
Regular Maintenance:
Weekly: Lubricate bearings and check vulnerable parts (such as guard plates and seals).
Monthly: Calibrate the shot blasting angle and test the motor insulation resistance.
Quarterly: Test the shot blaster speed and clean the separator.
Preventive Measures: Select matching shot, avoid water contamination of workpieces, and establish a three-level maintenance system (daily inspection, weekly maintenance, and monthly overhaul).
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