《角磨机使用安全》PPT课件.ppt

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1、Safety During Grinding Operation,Grinding machine&wheels,Surface Grinder,Mini-Surface Grinder,RPM=6600,RPM=9000,Grinding machine&wheels,Mini-straight Grinder&Its compatible wheels,RPM=18000,Grinding machine&wheels,Pedestal Grinder,RPM=2300,Grinding wheel,Back flange,Adopter Nut,Grinder,Mounting of D

2、epressed Centre wheel on Surface Grinder,Guard,Grinding wheel,Adopter Nut,Grinder,Unsafe Method Mounting of Wheel on Surface Grinder,The back flange Not used,Grinding wheel,Back flange,Grinder,Unsafe Method Mounting of Wheel on Surface Grinder,Adaptor nut not used,Grinding wheel,Back flange,Adopter

3、Nut,Grinder,Unsafe Method Mounting of Wheel on Surface Grinder,Wheel used as support for paper wheel,Grinding wheel,Adopter Nut,Grinder,Unsafe Method Mounting of Wheel on Surface Grinder,Old used wheel or Metal plates used in place of back flange,Grinding wheel,Back flange,Adopter Nut,Grinder,Unsafe

4、 Method Mounting of Wheel on Surface Grinder,Cut-off wheel is used instead of Depressed centre wheel,Unsafe Method Mounting of Wheel on Surface Grinder,M/c RPM 6600,Wheel RPM 6500,Grinding wheel RPM is less than RPM of the machine,Grinding wheel,Back flange,Adopter Nut,Grinder,Mounting of Depressed

5、Centre wheel on Surface Grinder,Grinding machine&wheels,Straight Grinder,RPM=5630,Grinding wheel,flange,Nut,Grinder,Unsafe method of mounting of wheel on Straight Grinder,“D”,d=D/3,Guards,Grinding wheel,Grinder,Mounting of Grinding wheel on Straight Grinder,Using flange on one side only,Grinder,Moun

6、ting of Grinding wheel on Straight Grinder,Grinder,Providing smaller size of flanges,Providing different size of flanges on both sides,dD/3,Grinder,Mounting of Grinding wheel on Straight Grinder,Nut not mounted fully on the spindle of the grinder,Guard missing,Grinder,Mounting of Grinding wheel on S

7、traight Grinder,Flanges are put in reverse way,Grinding wheel,flange,Nut,Grinder,Mounting of Grinding wheel on Straight Grinder,“D”,d=D/3,Precautions Before&During Usage,FlangesMountingMachineVisual InspectionLabelsSafety Devices,FLANGES,Flanges are very importantBoth flanges DIA to be sameFlange DI

8、A to be atleast 1/3 dia of wheelFlanges must be relieved,MOUNTING,Wheel must easily fit on the spindle.MUST NOT BE LOOSEIt bore is tight keep the wheel aside.DO NOT TRY TO INCREASE BORE SIZE,MACHINE,Machine should be well maintained.There should be no vibrationThere should be no belt slipageBearing

9、should be in good condition,VISUAL INSPECTION,Visually inspect wheel for cracksCheck for damage during storage/transit/handlingDo not use such wheel,CHECK LABELS,Maximum operating speed(MOS)is mentioned on the wheel.Ensure machine speed is less than MOSResin bonded wheels have expiry date.See that the expiry date has not passedRead safety and implement LOGOS on the label,SAFETY DEVICES,Use machine guardsUse Ear PlugUse Face shield,Most important,Use the wheel in the manner it is designed forIf correctly used they are very useful toolsIf incorrectly used“Make sure God is on your side”,