METHOD OF JOINING METAL PARTS Russian patent published in 2017 - IPC B23K1/00 B23K1/19 B23K35/30 B21D53/04 

FIELD: metallurgy.

SUBSTANCE: invention can be used for joining metal parts (11, 12) having a solidus temperature above 1000°C. A pour point depressant (14) is containing phosphorus and silicon to reduce melting point on the surface (15) of the first metal part (11) is applied. The second metal part (12) is driven in contact with the pour point depressant (14) at contact point (16) on the surface (15). The first and second metal parts are heated (11, 12) to temperature above 1000°C and melting of surface layer (21) of the first metal part (11) is provided to form together with the pour point depressant component a layer of metal (210) which is in contact with the second metal part (12) at the contact point (16). The connecting seam (25) formed during solidification of the molten metal at the contact point (16) contains at least 50 wt % of metal, which was part of any of the metal parts (11, 12) before heating (203).

EFFECT: simple and reliable joining method provides generation of strong seam between the parts.

17 cl, 21 dwg, 8 tbl