PRINCIPLES OF STORAGE AND TRANSPORT OF ABRASIVE TOOLS
Proper storage and transportation of abrasive tools
Inspection of abrasive tools upon delivery
Storage and transportation of abrasive tools have direct impact on safety.
Proper storage, transportation and awareness of existing hazards is crucial here. Grinding and cutting processes are characterized by very high dynamics; the peripheral speeds of 35 [m/s] often used, when converted, mean a speed of 126 [km/h], and 80 [m/s] is already 290 [km/h]. Therefore, the handling of abrasive tools requires special safety rules.
Proper handling at all stages of the logistics process, i.e. packaging, loading, protection against damage and weathering, external transport, handling at forwarding agents, unloading at the final customer, storage, internal transport, as well as during mounting and start up determines reliability of the tool and work safety.
Important transportation and storage issues (!)
Methods for abrasive tool inspection upon delivery
Visual method and thus a careful inspection of the tool to detect any cavities, cracks or other signs of damage. Visible marks disqualify such grinding wheels - absolutely do not use. They should be set aside for re-examination by the manufacturer's service.
The sound (acoustic) method of testing grinding wheels involves tapping the wheels with a non-metallic tool, such as a wooden hammer. For heavier grinding wheels, set them on a hard clean floor surface. The best point to tap the grinding wheel is approximately 45˚ on either side of its vertical axis, near its periphery. Before each strike, turn it through 45˚ until it has been tapped around its entire circumference (see figure).
This method is primarily used for vitrified-bonded grinding wheels. A good grinding wheel produces a clear, resonant tone. A cracked grinding wheel produces a deafening tone that fades quickly. Such grinding wheels absolutely must not be used. They should be set aside for reexamination by the manufacturer's service. Resin bonded grinding wheels are tested in the same way, but in this case the tone is slightly less pronounced (muffled). The presence of a crack is also manifested by a change in tone.
How to store abrasive tools
Example of a rack for storing grinding wheels
1 - small dish wheels
2 - small flat wheels
3 - shelves for small grinding wheels slightly inclined to prevent falling out
4 - back wall of the rack with protective lining
5 - flat grinding wheels
6 - small cylindrical grinding wheels
7 - large dish wheels
8 – taper cup wheels arranged edge to edge and bottom to bottom
9 - flat shelf for cuting-off wheels, shaped and cylindrical
10 - thin-walled or soft cylindrical grinding wheels
11 - corrugated separating cardboard
12 - steel or ceramic, even, flat supporting plate
13 - two-point cradle support for wheels standing on their circumference
14 - "front" of grinding wheel
15 - small cylindrical grinding wheels
16 - flat grinding wheels with a profile
17 - flat cutting-off wheels
18 - steel or ceramic, even supporting plate
19 - thick hard cylindrical grinding wheels
20 - medium-sized flat vitrified grinding wheels
21 - large grinding wheels