FIELD: metal product subjected to cracking during operation, for example, the blade component of the gas-turbine engine, and method for its manufacture.
SUBSTANCE: the product is made of metal material and has a body and a terminal part made integral with the body. The terminal part has a strip of metal material made integral with the body in the whole cross-section of the terminal part and passing inside it. The strip is under a compression stress that is higher than that of the body. The method of product manufacture consists in the fact that the depth of the strip in the terminal part is selected and then deformation by rolls in the terminal part is carried out. The terminal part is subjected to deformation by rolls until the compression stress in the whole cross-section of the terminal part is attained.
EFFECT: produced a strip in the terminal part of the product with a residual compression stress preventing the appearance of cracks.
15 cl, 1 dwg
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