FIELD: machine building.
SUBSTANCE: quality of galvanic coatings on parts is controlled using hardness reference minerals. When determining hardness of galvanic coatings on parts, hardness references with hardness value that is lower than on tested galvanic coatings of parts are taken. If hardness reference leaves no scratch on the surface of galvanic coatings of parts, surfaces of parts are harder than hardness reference, and it means that galvanic coatings of parts are acceptable. If hardness reference has left a scratch on galvanic coating of the part, coating is accepted as a rejected one and does not comply with hardness of galvanic coating.
EFFECT: possibility of determining the type of coating, controlling the quality of galvanic operations and checking hardness without damage to working surface of the part.
2 tbl, 2 dwg
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