The method of lapping is carried out primarily to increase accuracy.
What is lapping?
Lapping is a
finish machining process in which two surfaces are rubbed together with an
abrasive between them by manually or using a machine that used
to producing geometrically real surfaces, correcting minor surface imperfections, improving dimensional precision, or making two contact surfaces very close to each other.
Material removal in lapping usually range from 0.003 to 0.03 mm but in many cases it reaches up to 0.08 to 0.1 mm.
Other important advantages of this process have obtained the correction of minor surface imperfections and improvement of surface finish.
Abrasives that used in the lapping process
- Al2O3 & SiC
- Cr2O3
- B4C3
- Diamond
Factors to consider in Lapping Process
- Type of material being processed
- Speed of plate
- Pressure on work-piece
- Plate material
- Size and type of abrasive
- Vehicle used
- Flatness of plate
- Feed system
- Method of charging and conditioning the plate
- Plate temperature
It is the process that is performed
either manually or by machine. Hand-lapping is done with abrasive powder as a lapping medium and in the machine, lapping is done with abrasive powder or bonded
abrasive wheel.
Conclusion
Lapping is simple yet a beneficial process that can produce highly polished parts end, tight end
and thickness tolerance, and flatness unbelievable by other processes.
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