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to Kinik Products
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Roll
are widely used on rolling machines in steel mills, paper mills,
aluminum, brass, copper industries etc.
Roll
grinding wheels are used to regrind the rolls. The operation is
similar to cylindrical grinding, except the workpiece is large and
geometry and highly accurate surface finishes are required.
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| ATTENTION:
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When
ordering, please mark
"Roll Grinding Wheel¨
in
your order.
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 Specification
Recommendation
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Application
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Wheel
Specification
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Roughing
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Finishing
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Hot
Mill Work Roll
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Chilled
Iron
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GC36KB
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GC80IB
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Back-Up
Roll
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Forged
Steel
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32A36JB
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Cold
Mill Work Roll
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Hardened
Steel
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32A80KB
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32A220KB
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BAck-Up
Roll
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Hardened
Steel
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32A36KB
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Sendzimir
Mill Roll
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High
Speed Steel
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BGC80IV
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GC320HB
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Back-Up
Roll
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C60IV
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Paper
Mill Roll
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Chilled
Iron
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BGC36KV
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BGC60KV
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Rubber-Covered
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C36IV
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C60JV
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Chromium
Plated Roll |
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Stainless
Steel Roll
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400
Series
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32A80KV
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300
Series
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GC60JV
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Rubber
Roll
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Soft
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WA24JB
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C46LB
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Hard
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C36JV
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Standard
Wheel Size & max.rpm |
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D
x T x H (mm)
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Vitrified
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Resinoid
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33m/s
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50m/s
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355x38x127.0
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1793rpm
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2690rpm
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455x75x127.0
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1399
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2099
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510x50x304.8
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1248
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1872
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510x75x190.5
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1248
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1872
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610x75x304.8
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1044
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1565
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660x75x304.8
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955
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1468
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760x75x304.8
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838
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1256
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760x100x304.8
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838
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1256
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800x80x304.8
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786
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1179
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915x100x304.8
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696
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1044
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915x150x508.0
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696
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1044
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1065x100x04.8
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424
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637
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| Note: |
| 1. |
Above are
recommendations in general. Because roll grinding is a kind of
precision grinding, it requires great grinding experiences and
skills. One must consider the material of workpiece, machine
condition and speeds etc., to have a correct choice of
grinding wheel specification.
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| 2. |
Usually,
roll grinding machines allow for wheel speed changes. General
max. operating speeds for vitrified wheels are 2000 m/min
(35m/s), and for resinoid wheels are 3000 m/min (50m/s). |
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Fault
Finding and Correction Guide |
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Problem
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Possible
Causes
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Suggested
Correction
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1. Poor
quality of finish |
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| Contaminated
coolant |
| Accumulated
grit inside guard |
| Traverse speed
too fast |
| Poor wheel
dressing |
| Roll speed too
low |
| Depth of cut
too high |
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| Clean coolant
tank and filter regularly |
| Clean and flush
inside of guard regularly |
| Reduce traverse
speed |
| Dress the wheel
smoother |
| Increase roll
speed |
| Reduce depth of
cut, esp. in last few passes |
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| Worn spindle
bearings |
| Roll speed too
fast |
| Inadequate
lubrication of roll centers |
| Wheel too hard |
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| Check bearings
for wear and alignment |
| Reduce roll
speed until vibration stops |
| Check
conditions of work rest and pour oil in roll centers |
| Reduce wheel
speed or use softer grade |
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| Rool
speed too low |
| Wheel
too hard |
| Wheel
dressed too smooth |
| Wheel
glazing |
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| Increase
roll speed |
| Reduce
wheel speed or use softer grade |
| Dress
wheel coarser |
| Dress
wheel |
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For
further information, such as new roll grinding or regrinding of
aluminum foil roll, carbide roll, and printed roll etc., please
contact KINIK
sales representatives. |
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