FIELD: machining of metals.
SUBSTANCE: invention relates to production of part by deformation of steel plate at ambient temperature. Plate is cut to size from steel web or sheet at ambient temperature. Chipping or cutting is performed at ambient temperature to make recesses or openings in the plate and to deform the plate at ambient temperature at least one step into the part. Chipped or cut edge steel plate zones are cold-hardened and heat treated by heating to temperature of not less than 600 °C with duration of maximum 10 seconds.
EFFECT: result is increase of static strength of part.
15 cl, 5 dwg
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