Brief introduction: Matters needing attention in processing workpieces by automatic sandblasting machine.

Matters needing attention in machining workpiece by automatic sandblasting machine

The automatic sandblasting machine drives the abrasive to impact the surface of the workpiece through high-pressure air flow, so as to achieve the machining effects of rust removal, deburring and strengthening. The safety specifications and technological requirements must be strictly observed during operation, and the specific precautions are as follows:

Precautions before operation

Equipment inspection: Before starting, it is necessary to check whether the air compressor pressure meets the rated parameters of the equipment, and whether the pipeline is leaking or blocked; Confirm that the sandblasting gun is free from abrasion and the nozzle is unblocked; Check whether the dust removal system is running normally, and the filter element is not blocked to avoid dust leakage.

Abrasive selection: Choose matching abrasives according to the workpiece material and processing requirements (for example, emery and glass beads can be selected for metal parts, and resin sand can be selected for non-metal parts), and the abrasives should be dry and free of impurities to avoid blocking the pipeline by wet abrasives.

Safety protection: the operator must wear a full set of protective equipment, including dust mask, protective glasses, wear-resistant protective clothing, non-slip gloves and protective shoes. Direct operation without protection is strictly prohibited.

Workpiece fixation: adjust the fixture according to the size of the workpiece to ensure that the workpiece is firmly clamped, avoid the displacement and falling off of the workpiece during machining, and prevent the fixture from blocking the area to be machined.

Matters needing attention in operation process

Parameter debugging: firstly, test run the equipment with no load, adjust the sandblasting pressure, sandblasting angle (it is recommended to be 30-60 with the workpiece surface) and the moving speed of the spray gun, and determine the best process parameters through trial spraying to avoid damage to the workpiece surface due to excessive pressure or failure to achieve the machining effect due to too low pressure.

Machining monitoring: it is necessary to observe the surface state of the workpiece in real time during machining, and adjust the parameters or spray gun position in time if there are problems such as excessive sandblasting and local spray leakage; It is forbidden to open the hatch or reach in when the equipment is running to prevent abrasive splashing from hurting people.

Abrasive replenishment: regularly check the storage capacity of abrasives and replenish abrasives in time to ensure the continuity of processing; At the same time, clean up the impurities in the recovery system to avoid impurities mixing with abrasives and affecting the machining accuracy.

Dust removal management: keep the dust removal system running continuously, clean the dust collection box regularly to prevent dust accumulation from affecting the equipment performance, reduce the dust concentration in the workshop and improve the working environment.

Matters needing attention in closing after operation

Stop step: first turn off the sand blasting switch, and then turn off the air compressor and dust removal system after the residual abrasive in the spray gun is emptied; Finally, cut off the main power supply of the equipment to avoid no-load operation of the equipment.

Workpiece cleaning: after machining, use compressed air to purge the residual abrasive and dust on the surface of the workpiece, and if necessary, clean and dry it to prevent the workpiece from rusting due to abrasive residue.

Equipment maintenance: clean up the residual abrasive and dust inside the equipment, check the wear of spray guns and nozzles, and replace wearing parts in time; Lubricate the moving parts of the equipment to ensure smooth operation next time.

Environmental cleaning: clean up the abrasive and dust scattered in the operation area, sort and recycle the usable abrasive, properly dispose of the waste abrasive and dust, and keep the workshop clean and tidy.

Matters needing attention in special circumstances

When processing thin-walled parts and precision parts, it is necessary to reduce the sandblasting pressure, shorten the processing time, and avoid workpiece deformation or surface accuracy damage.

It is forbidden to process inflammable, explosive and corrosive workpieces. If it is necessary to process workpieces with special materials, it is necessary to assess the safety in advance and formulate special operation plans.

In case of equipment failure, it is necessary to immediately stop and cut off power, and then troubleshoot the failure after the equipment is completely stopped. It is forbidden to run with failure.