Method and apparatus for synchronously melting and preparing alloy

Abstract

An apparatus for synchronously melting and preparing alloy, the alloy to be added is made into wire in advance, and the wire feeding speed required for the preparation of the alloy with a specific composition is calculated according to the flow rate of raw molten aluminum in the launder. In the continuous ingot casting process, the wire is continuously and stably fed into the launder of the raw molten aluminum at the wire feeding speed, and the alloy preparation is formed in real time, which is able to avoid specific gravity segregation caused by the long-term standing of melt, and realize the preparation of gradient materials while significantly improving the alloying efficiency. The present disclosure also relates to a method for synchronously melting and preparing alloy.

1 . A method for synchronously melting and preparing alloy, wherein an alloy to be added is made into a wire in advance, and a wire feeding speed required for preparing an alloy with a specific composition is calculated according to a flow rate of raw molten aluminum in a launder, wherein in a continuous ingot casting process, the wire was continuously and stably fed into the launder of the raw molten aluminum at the wire feeding speed, thereby real-time forming an alloy preparation. 
     
     
         2 . The method for synchronously melting and preparing alloy melting according to  claim 1 , wherein the wire is an alloy wire or a pure metal wire; and an alloy with a high melting point refers to an alloy with a melting point higher than that of pure aluminum. 
     
     
         3 . The method for synchronously melting and preparing alloy according to  claim 1 , wherein an alloy with a high melting point refers to Al—Mn, Al—Fe and Al—Cr. 
     
     
         4 . The method for synchronously melting and preparing alloy according to  claim 1 , wherein the wire feeding speed Vwire is determined according to a flow rate V1 of the raw molten aluminum in the launder, wherein Vwire=kV1, where k is a fixed constant. 
     
     
         5 . The method for synchronously melting and preparing alloy according to  claim 1 , wherein the real-time forming refers to: in order to make the wire quickly be dissolved into the raw molten aluminum, a method of high-frequency instantaneous heating is applied to melt an alloy with a high melting point while the wire is being fed, so that a melted alloy is able to be guided and diverted into the raw molten aluminum, so as to enable rapid mixing to realize a required concentration of alloying elements. 
     
     
         6 . An apparatus for realizing the method according to  claim 1 , comprising: a launder for molten aluminum and at least one guiding tube, which has a wire feeding device and is disposed in the launder for molten aluminum, wherein the wire feeding device is disposed at an inlet end of the at least one guiding tube and is connected with a movement control device, so as to adjust a feeding speed of the wire, and a temperature control device is disposed at an outlet end of the at least one guiding tube, so as to adjust a temperature of the wire when the wire enters the launder for molten aluminum; and
 the at least one guiding tube is a hollow curved tube, with the wire arranged inside, and a bending direction of the at least one guiding tube is the same as a flow direction of the molten aluminum in the launder for molten aluminum.   
     
     
         7 . The apparatus according to  claim 6 , wherein a depth of the at least one guiding tube located inside the launder for molten aluminum is ½˜⅔ of a depth of the launder. 
     
     
         8 . The apparatus according to  claim 6 , wherein the temperature control device comprises an electric temperature transmitter module, an electronic potentiometer module, an electric controller module and a silicon controlled rectifier voltage regulator module, wherein a temperature change is measured by a thermocouple, and converted into 0˜10 mA of a DC current signal, which is a standard signal of a model meter, through an electric temperature transmitter, and the DC current signal is transmitted to an electronic potentiometer and an electric controller, respectively, wherein the electric controller outputs 0˜10 mA of the DC current signal based on a calculation pursuant to a predetermined control rule, according to a magnitude and direction of a bias, and transmits the DC current signal to a silicon controlled rectifier voltage regulator, thereby adjusting an AC voltage to realize an automatic control. 
     
     
         9 . The method for synchronously melting and preparing alloy according to  claim 2 , wherein an alloy with a high melting point refers to Al—Mn, Al—Fe and Al—Cr. 
     
     
         10 . The apparatus according to  claim 6 , wherein the wire is an alloy wire or a pure metal wire; and an alloy with a high melting point refers to an alloy with a melting point higher than that of pure aluminum. 
     
     
         11 . The apparatus according to  claim 6 , wherein an alloy with a high melting point refers to Al—Mn, Al—Fe and Al—Cr. 
     
     
         12 . The apparatus according to  claim 6 , wherein the wire feeding speed Vwire is determined according to a flow rate V1 of the raw molten aluminum in the launder, wherein Vwire=kV1, where k is a fixed constant. 
     
     
         13 . The apparatus according to  claim 6 , wherein the real-time forming refers to:
 in order to make the wire quickly be dissolved into the raw molten aluminum, a method of high-frequency instantaneous heating is applied to melt an alloy with a high melting point while the wire is being fed, so that a melted alloy is able to be guided and diverted into the raw molten aluminum, so as to enable rapid mixing to realize a required concentration of alloying elements.