Pipe embedded structure and method of manufacturing the same

Abstract

A pipe embedded structure includes: a pipe made of a metal or an alloy, and having a periphery forming a circular shape; a base material made of a metal or an alloy, including a recessed portion having an inner wall on which a part of the periphery abuts and in which the pipe is fitted; and a deposited layer formed by accelerating powder formed of a metal or an alloy together with a gas in a state where the pipe is fitted into the recessed portion, and spraying and depositing the powder on surfaces of the pipe and the base material while maintaining a solid phase state of the powder, wherein a ratio h/R of a protruding amount h by which the pipe protrudes from the surface of the base material and a curvature R of the periphery is not smaller than 0.3 and not greater than 0.7.

1 . A pipe embedded structure comprising:
 a pipe made of a metal or an alloy, and having a periphery forming a circular shape in a transverse section;   a base material made of a metal or an alloy, comprising a recessed portion having an inner wall on which a part of the periphery abuts and in which the pipe is fitted; and   a deposited layer formed by accelerating powder formed of a metal or an alloy together with a gas in a state where the pipe is fitted into the recessed portion, and spraying and depositing the powder on surfaces of the pipe and the base material while maintaining a solid phase state of the powder, wherein   a ratio h/R of a protruding amount h by which the pipe protrudes from the surface of the base material and a curvature R of the periphery is not smaller than 0.3 and not greater than 0.7.   
     
     
         2 . The pipe embedded structure according to  claim 1 , wherein, in the transverse section of the pipe, a clearance of the recessed portion and the pipe is not smaller than 0 mm and not greater than 0.05 mm. 
     
     
         3 . The pipe embedded structure according to  claim 1 , wherein the pipe is formed of stainless steel, a copper alloy, a nickel alloy, tantalum, niobium, titanium, aluminum, or an aluminum alloy. 
     
     
         4 . The pipe embedded structure according to  claim 1 , wherein the base material is formed of copper, a copper alloy, aluminum, or an aluminum alloy. 
     
     
         5 . The pipe embedded structure according to  claim 4 , wherein the powder is formed of copper or aluminum. 
     
     
         6 . A method of manufacturing a pipe embedded structure, the method comprising:
 a base material forming step of forming, in a base material made of a metal or an alloy, a recessed portion having an inner wall on which a part of a periphery of a pipe abuts, the pipe being made of a metal or an alloy and having the periphery forming a circular shape in a transverse section; and   a deposited layer forming step of forming a deposited layer by fitting the pipe into the recessed portion, accelerating powder formed of a metal or an alloy together with a gas, and spraying and depositing the powder on surfaces of the pipe and the base material while maintaining a solid phase state of the powder, wherein   the base material forming step causes a ratio h/R of a protruding amount h by which the pipe protrudes from the surface of the base material and a curvature R of the periphery to be not smaller than 0.3 and not greater than 0.7.   
     
     
         7 . The method of manufacturing a pipe embedded structure according to  claim 6 , wherein the base material forming step causes a clearance of a width of the recessed portion in the transverse section of the pipe and an outer diameter of the pipe to be not smaller than 0 mm and not greater than 0.05 mm. 
     
     
         8 . The pipe embedded structure according to  claim 2 , wherein the pipe is formed of stainless steel, a copper alloy, a nickel alloy, tantalum, niobium, titanium, aluminum, or an aluminum alloy. 
     
     
         9 . The pipe embedded structure according to  claim 2 , wherein the base material is formed of copper, a copper alloy, aluminum, or an aluminum alloy. 
     
     
         10 . The pipe embedded structure according to  claim 3 , wherein the base material is formed of copper, a copper alloy, aluminum, or an aluminum alloy. 
     
     
         11 . The pipe embedded structure according to  claim 8 , wherein the base material is formed of copper, a copper alloy, aluminum, or an aluminum alloy. 
     
     
         12 . The pipe embedded structure according to  claim 9 , wherein the powder is formed of copper or aluminum. 
     
     
         13 . The pipe embedded structure according to  claim 10 , wherein the powder is formed of copper or aluminum. 
     
     
         14 . The pipe embedded structure according to  claim 11 , wherein the powder is formed of copper or aluminum.