An ISO 9001:2008 & EMS 14001 Company
An ISO 9001:2008 & EMS 14001 Company
An ISO 9001:2008 & EMS 14001 Company
10/2011
What is Lapping?
Lapping is a mechanical precision finishing operation
done to achieve high dimensional accuracy
What is Lapping?
Advantages of Lapping
Reduction of peaks and valleys results in maximum bearing area
between mating surfaces - This ensures tight seating of seals
Improves service life of the moving parts which are subject to wear
Accessible flat surfaces of parts of any shape & size and any type of
material can be lapped
Valve Manufacturers
Automotive industries
Pump Manufacturers
Electronic Industries
An ISO 9001:2008 & EMS 14001 Company
7
10/2011
Tungsten Plastics
Ceramics
Silicon
(Eg.wafer)
Rubber Bronze
Stainless Steel
Model 06-03
Model 06-06
To maintain:
•Flatness
•Surface finish
•Parallelism
Model 24-11
Model 24-11
with 4 way lapping
(rotating top & bottom lap plates)
Accessories
4/0 Emery Paper
Straight
Monochromatic
Hand lap&Edge
Light
Polishing Optical
Stand Flat
plate
Cupboard
ToTo
check
To
FittedUsed
storethe
for
correct
with flatness
measuring
polishing
4/0 emery paper,
minor the
paper
of lapreflective
pad,
toimperfections
achieve plate
flatness.
hand tools
and etc,
for
surface
Sodium
after(can
small
lapping Vapour
be batches
used
foraslight Lamp
a machine
band
stand
used for 300
with and 400mm
a wavelength
interpretation
diameter ofbench
0.00058
(for flatness modelmm
checking) lapping
machines)
Measuring Flatness
Monochromatic Lamp
Flatness is measured using
GMT make Monochromatic lamp
& Optical flat
The GMT Monochromatic lamp unit
provides light source with sodium
vapour lamp.
The wave length of Sodium light in air (λ air):
0. 000589mm i.e. 0. 589 micrometer)
Measuring Flatness
Measuring Flatness
Point of contact or line of contact