METHOD OF PROCESSING CONTACT PORTIONS BETWEEN VALVE PLATE AND SUCTION VALVE AND/OR DISCHARGE VALVE OF RECIPROCATING COMPRESSOR, AND RECIPROCATING COMPRESSOR

摘要

A method of processing the contact portions between a valve plate and a suction valve and/or a discharge valve of a reciprocating compressor has high productivity. The method of processing the contact portions between the valve plate (8) and the suction valve (10a) and/or the discharge valve (10b) of the reciprocating compressor. The method hardens portions of the valve plate (8) by laser without melting the portions. The portions to be hardened are a portion near a suction hole (8a) in that contact surface of the valve plate (8) which is in contact with the suction valve (10a) and/or a portion near a discharge hole (8b) in that contact surface of the valve plate (8) which is in contact with the discharge valve (10b). After the hardening, the method grinds the contact surface between the valve plate (8) and the suction valve (10a) and/or the contact surface between the valve plate (8) and the discharge valve (10b) to cause the hardened portion to protrude from a non-hardened portion.