FIELD: oil mechanical engineering. SUBSTANCE: after heading of rod heads it is heated up to 500 600 C, held under that temperature for definite time and cooled in the open air. Rods are subjected to straightening and finishing machining. In the case straightening is exercised either with additional heating up to 500 700 C or after heading of rod heads, or right after holding under temperature of 500 700 C. EFFECT: improved process of pump rods production. 4 cl, 3 dwg, 1 tbl
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