METHOD OF MANUFACTURING PARTS FROM PLATE STOCKS WITH BULGES IN FORM OF SOLIDS OF REVOLUTION Russian patent published in 2008 - IPC B21D22/02 B21D37/16 

FIELD: technological processes; plastic working.

SUBSTANCE: invention is related to the sphere of metal plastic working and may be used for parts manufacturing with local deformation with application of local heating. On lower electrode of device for resistance spot welding, matrix of molding instrument is installed, and on upper electrode puncheon is installed. Plate stock is placed between matrix and puncheon. Electric heating of stock is done. For that purpose puncheon is lowered until it touches the stock, and heating current impulse is passed through the stock. Impulse duration is selected with the condition of its exceeding 1.5 - 2.5 times duration of impulse, which is necessary to weld package out of two plate stocks. After period of time, which amounts to 0.7 - 0.8 from the duration of heating impulse, forging force is applied on electrodes. At that puncheon is displaced, and the stock is deformed. As a result, quality of manufactured parts is improved, and method efficiency is increased.

EFFECT: improvement of the manufactured parts quality with increase in method efficiency.

2 cl, 6 dwg