Method for manufacturing wick

Abstract

Provided is a method for manufacturing a wick, which facilitates control over capillarity of the wick. A method for manufacturing a wick according to the present invention includes: a step of supplying material powder containing metal powder onto a base; a step of heating the material powder on the base to obtain a sintered compact; and a step of rolling the sintered compact. In this situation, when the material powder supplied onto the base is heated to form the sintered compact, the sheet-shaped sintered compact can be formed. Further, when the sintered compact is rolled, a void ratio of the sintered compact can be controlled after forming the sintered compact, thereby controlling the capillarity of the wick 1.

1 . A method for manufacturing a wick, the method comprising:
 supplying a raw material containing metal powder onto a base, wherein the raw material supplied onto the base has a thickness of 0.1 to 2.0 mm;   heating the raw material on the base to obtain a sintered compact; and   compressing the sintered compact by rolling, wherein the wick after rolling has a thickness of 0.05 mm to 1.0 mm.   
     
     
         2 . The method according to  claim 1 , wherein the raw material contains a binder. 
     
     
         3 . The method according to  claim 1 , wherein the raw material on the base is heated together with the base. 
     
     
         4 . The method according to  claim 1 , wherein the base is made of a metal. 
     
     
         5 . The method according to  claim 1 , further comprising smoothening the raw material powder on the base. 
     
     
         6 . The method according to  claim 1 , further comprising forming steam passages on a surface of the sintered compact after the rolling of the sintered compact. 
     
     
         7 . The method according to  claim 1 , further comprising forming protrusions, which are configured to suppress boiling vibration, on a surface of the sintered compact after the rolling of the sintered compact. 
     
     
         8 . The method according to  claim 1 , further comprising cutting the sintered compact. 
     
     
         9 . The method according to  claim 1 , wherein an average void ratio of the wick falls within a range of 5% to 90%. 
     
     
         10 . The method according to  claim 1 , wherein a bulk density of the material powder before the heating of the raw material falls within a range of 10% to 50% to true density. 
     
     
         11 . The method according to  claim 1 , wherein a sintering temperature is in a range of 400° C. to 1050° C.