초록 ▼

A method of joining metal materials by spraying molten metal into a cavity between the articles to be joined. Prior to deposition of the metal, the surface of the cavity is cleaned and the articles to be joined are preheated. Subsequent to deposition of the metal within the cavity, the joined articl

A method of joining metal materials by spraying molten metal into a cavity between the articles to be joined. Prior to deposition of the metal, the surface of the cavity is cleaned and the articles to be joined are preheated. Subsequent to deposition of the metal within the cavity, the joined articles are cooled at a rate that precludes damage due to thermal effects and the deposited metal is consolidated in the cavity by hot pressing.

대표청구항 ▼

A method of joining two metal members by spraying molten metal into a cavity therebetween, said method comprising the steps of: providing a first metal member; providing a second metal member; placing said first and said second metal members adjacent one another; providing a cavity between said firs

A method of joining two metal members by spraying molten metal into a cavity therebetween, said method comprising the steps of: providing a first metal member; providing a second metal member; placing said first and said second metal members adjacent one another; providing a cavity between said first and second metal members disposed to receive a deposit of sprayed metal to join said first and second members; facilitating the formation of a metallurgical bond at the interface between the surface of s id cavity and metal sprayed thereon by cleaning the surface of said cavity and preheating said metal members in a controlled atmosphere at low pressure; spraying molten metal into said cavity without substantial melting of the surface of said cavity; rapidly solidifying said molten metal incrementally within said cavity to form a solid partially porous sprayed metal portion, said metal portion substantially filling said cavity and being adherent to at least a portion of the surface of said cavity to join said two metal members; reducing residual stresses at said interface by cooling said joined metal members at a sufficiently low cooling rate; and hot pressing said joined metal members to substantially eliminate voids in said sprayed metal portion and metallurgically bond said sprayed metal portion to the surface of said cavity.