Steel plate pretreatment line, shot blasting machine operating procedures and use of skills and maintenance
Shot blasting machine operating procedures
1, shot blasting machine operation before work
(1) check the "handover record".
(2) before operation to check the guard plate, rubber curtain, rollers and other wear parts wear and tear, timely replacement.
(3) check the moving parts of the fit, bolt connection is loose, tighten in time.
4）Check whether there is debris falling into the machine, and clear it in time to prevent blocking each conveying link causing equipment failure.
(5) Check whether the lubrication of each part is in accordance with the regulations.
6）Before starting the machine, when confirming that there is no one in the chamber and the access door is closed reliably, then prepare to start.
Before starting the machine, send a signal to make the personnel near the machine leave.
(7) to operate correctly in accordance with the operating procedures.
2、The operation of the shot blasting machine at work
(1) first start the ventilation and dust suction motor, check the operation, to confirm normal before starting the shot blasting machine, shot blasting machine is not started before, do not open the control valve for iron pellets.
(2) to frequently check the quality of steel cleaning, if necessary, adjust the angle of projectile blasting and roller conveyor speed, always observe whether the steel has run off, slipping to be promptly excluded.
(3) pay attention to the vibration and sound in the operation of the shot blasting machine is normal, bearing and motor temperature rise, when there are abnormalities to stop and check, troubleshooting or replace the blade.
(4) blast room work is over, should first close the pill tube, stop the incoming air.
Close the shot blasting machine motor, after stopping the ventilation fan.
(5) anomalies, stop immediately, check the cause and promptly eliminate.
(6) wet steel plate is strictly prohibited to enter the shot blasting room for shot blasting treatment.
3, shot blasting machine operation after work
(1) cut off the power supply, clear the debris on the lower screen of the separator.
(2) routine maintenance.
(3) fill out the "handover record", do a good job handover.
Shot blasting machine using shot blasting machine throwing high-speed projectiles to clean or strengthen the casting surface of the casting equipment.
Shot blasting machine can simultaneously drop sand, core removal and cleaning of castings.
Second, the use of shot blast cleaning machine skills
1, in the shot blasting machine process should try to put more workpieces in the blast zone, which can improve the cleaning efficiency and reduce the wear and tear of the guard plate, to increase its service life.
2, in the case of workpiece can not be increased, should adjust the directional sleeve, so that the amount of steel shot shot as much as possible on the workpiece, which can also increase the life of the guard plate, reduce its wear.
3, the dust removal system should be adjusted at each gate of the branch pipe, so that its wind distribution is reasonable, can enhance the dust removal effect.
4, dust collector should ensure regular dust cleaning.
Cart type shot blasting cleaning machine use is to open the box after the casting cooling to 30 ℃ or less into the cart.
The use of large shot blasting volume of high-speed rotation of the shot blasting machine will be accelerated to a speed of about 80 m / s, shot to the surface of the casting, clean up the cavity can not be used to supplement the gun cleaning.
The core sand under the cleaning, due to the high-speed projectile blow, and then by the separation and dust removal and regeneration, magnetic separation can still be used.
This machine is suitable for sand cleaning of castings below 5 tons and forging, structural parts, heat treatment and strengthening.
There are also crawler type, roller type, hook type and other types of shot blasting machines with similar uses to suit the requirements of various processes.