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Lapping machine. Lapping is a machining process in which two surfaces are rubbed together with an abrasive between them, by hand movement or using a machine. Lapping often follows other subtractive processes with more aggressive material removal as a first step, such as milling and/or grinding. Lapping can take two forms.
In loose abrasive processes, there is no structure connecting the grains. They may be applied without lubrication as dry powder, or they may be mixed with a lubricant to form a slurry. Since the grains can move independently, they must be forced into the workpiece with another object like a polishing cloth or a lapping plate.
Types of lapping include planetary lapping, double-sided lapping, and cylindrical lapping. ... Loose grit fabrication ... Free-abrasive grinding is a technique to ...
These products are generally non-abrasive or have a very low degree of abrasiveness. They deburr by peening , rather than actually removing the burr. Media selection, therefore, will control the degree of surface luster, making the part bright and shiny or developing a very matte, dull surface characterized by a completely random scratch ...
Flat honing requires an exclusive wheel suitable for the type of material being processed. Flat honing wheels are available with full faced layers of abrasive although grooves of different geometry can be introduced to enhance a better removal of material. These abrasives are fixed onto a steel plate.
In this way, superfinishing is similar to lapping, but with a bonded abrasive stone rather than loose or embedded abrasive. [2] The geometry of the abrasive depends on the geometry of the workpiece surface; a stone (rectangular shape) is for cylindrical surfaces and cups and wheels are used for flat and spherical surfaces. [3]
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Abrasive flow machining (AFM), also known as abrasive flow deburring [1] or extrude honing, [2] is an interior surface finishing process characterized by flowing an abrasive-laden fluid through a workpiece. [1] [3] [2] This fluid is typically very viscous, having the consistency of putty, [2] [3] or dough. [1]
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