Alfa Laval Corporate Ab

Axel Knutsson

Per Sjödin

Kristian Walter

A method for joining a first metal part with a second metal part, the metal parts having a solidus temperature above 1100&#xb0; C., includes applying a melting depressant composition on a surface of the first metal part, the melting depressant composition including a melting depressant component that includes at least 25 wt % boron and silicon for decreasing a melting temperature of the first metal part; bringing the second metal part into contact with the melting depressant composition at a contact point on said surface; heating the first and second metal parts to a temperature above 1100&#xb0; C.; and allowing a melted metal layer of the first metal component to solidify, such that a joint is obtained at the contact point. The boron at least partly originates from a boron compound selected from any of the following compounds: boric acid, borax, titanium diboride and boron nitride. The melting depressant composition and related products are also described.

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Lund, Sweden

Axel Knutsson