Method for manufacturing inner structure of regenerative cooling type combustion chamber

Abstract

The present invention relates to a method for manufacturing an inner structure of a regenerative cooling type combustion chamber, and more specifically to a method for manufacturing the inner structure of the regenerative cooling type combustion chamber, including the steps of: manufacturing a cylinder structure by performing a vacuum casting process or an air casting process for a copper alloy; manufacturing a circular plate having a constant thickness by forging and rolling the cylinder structure; thermally and mechanically processing the circular plate; spinning the circular plate to manufacture the shape of the regenerative cooling type combustion chamber; and thermally processing the shape of the regenerative cooling type combustion chamber. The method for manufacturing the inner structure of the regenerative cooling type combustion chamber can prevent necking and damage of the structure and can improve reliability during a bulging process for assembling the inner structure with an outer structure of the combustion chamber by uniformizing and miniaturizing the grain size of the inner structure of the combustion chamber.

1 . A method of manufacturing an inner liner of a regenerative cooling combustion chamber, the method comprising:
 manufacturing a cylinder structure with copper alloy through a vacuum or atmosphere casting process;   manufacturing a circular plate having a certain thickness by forging and rolling the cylinder structure; and   thermally treating, working and spinning the circular plate to have a shape of a regenerative cooling combustion chamber.   
     
     
         2 . The method according to  claim 1 , further comprising performing thermal treatment to recrystallize the jacket manufactured to have the shape of the regenerative cooling combustion chamber after finishing the spinning work. 
     
     
         3 . The method according to  claim 1 , wherein the copper alloy comprises copper, chrome, iron, lead, zinc, magnesium, nickel, and silicon. 
     
     
         4 . The method according to  claim 1 , wherein the copper alloy comprises chrome of 0.4˜0.7 wt %, iron of 0.06 wt % or below, lead of 0.005 wt %, zinc of 0.015 wt % or below, magnesium of 0.002 wt % or below, nickel of 0.02 wt % or below, silicon of 0.05 wt % or below, phosphorus of 0.01 wt % or below, and a remnant of copper in the total weight of copper alloy.