METHOD FOR PRODUCING Cu-Sn-CONTAINING STEEL

Abstract

A method for producing Cu—Sn-containing steel includes a hot heating step of attaching a flux to a surface of a Cu—Sn-containing cast steel in such an amount that the mass per unit area is 50 g/m 2 or more and 5000 g/m 2 or less, and heating the Cu—Sn-containing cast steel at a temperature of 1000° C. or above and 1400° C. or below, the flux including at least any of B 2 O 3 , P 2 O 5 , K 2 O, PbO, Na 2 O—FeO, Na 2 O—SiO 2 , Na 2 O—TiO 2 , and Li 2 O—SiO 2 components and being such that the liquid phase ratio at 1000° C. is 10 mass % or more; and a hot working step of hot working the Cu—Sn-containing cast steel.

1 . A method for producing Cu—Sn-containing steel, comprising:
 a hot heating step of attaching a flux to a surface of a Cu—Sn-containing cast steel in such an amount that the mass per unit area is 50 g/m 2  or more and 5000 g/m 2  or less, and heating the Cu—Sn-containing cast steel at a temperature of 1000° C. or above and 1400° C. or below, the flux comprising at least any of B 2 O 3 , P 2 O 5 , K 2 O, PbO, Na 2 O—FeO, Na 2 O—SiO 2 , Na 2 O—TiO 2 , and Li 2 O—SiO 2  components and being such that the liquid phase ratio at 1000° C. is 10 mass % or more; and 
 a hot working step of hot working the Cu—Sn-containing cast steel. 
 
     
     
         2 . A method for producing Cu—Sn-containing steel, comprising:
 a hot heating step of heating a Cu—Sn-containing cast steel at a temperature of 1000° C. or above and 1400° C. or below; and 
 a hot working step of attaching a flux to a surface of the Cu—Sn-containing cast steel in such an amount that the mass per unit area is 50 g/m 2  or more and 5000 g/m 2  or less, and hot working the Cu—Sn-containing cast steel, the flux comprising at least any of B 2 O 3 , P 2 O 5 , K 2 O, PbO, Na 2 O—FeO, Na 2 O—SiO 2 , Na 2 O—TiO 2 , and Li 2 O—SiO 2  components and being such that the liquid phase ratio at 1000° C. is 10 mass % or more. 
 
     
     
         3 . The method for producing Cu—Sn-containing steel according to  claim 1 , wherein the flux further comprises an incidental oxide, fluoride, carbonate, or metal component. 
     
     
         4 . The method for producing Cu—Sn-containing steel according to  claim 1 , wherein the flux is attached as a pre-melt to the surface of the Cu—Sn-containing cast steel. 
     
     
         5 . The method for producing Cu—Sn-containing steel according to  claim 2 , wherein the flux further comprises an incidental oxide, fluoride, carbonate, or metal component. 
     
     
         6 . The method for producing Cu—Sn-containing steel according to  claim 2 , wherein the flux is attached as a pre-melt to the surface of the Cu—Sn-containing cast steel. 
     
     
         7 . The method for producing Cu—Sn-containing steel according to  claim 3 , wherein the flux is attached as a pre-melt to the surface of the Cu—Sn-containing cast steel. 
     
     
         8 . The method for producing Cu—Sn-containing steel according to  claim 5 , wherein the flux is attached as a pre-melt to the surface of the Cu—Sn-containing cast steel.