How to make zinc wire

       【Summary】:

Conventionally, a method of heating the iron-based metal member and the aluminum-based metal member by sandwiching zinc or zinc wire between an iron-based metal member such as steel and an aluminum-based metal member such as a magnesium-aluminum alloy, and joining the two members has been known. So, let's learn how to make zinc wire together!

Conventionally, a method of heating the iron-based metal member and the aluminum-based metal member by sandwiching zinc or zinc wire between an iron-based metal member such as steel and an aluminum-based metal member such as a magnesium-aluminum alloy, and joining the two members has been known. So, let's learn how to make zinc wire together!



The zinc wire can melt the metal Si powder while suppressing the vaporization of the molten zinc liquid. However, even in this case, since the specific gravity of Si is smaller than that of Zn, when the metal Si powder is added to the molten zinc liquid, the metal Si powder is suspended near the liquid level of the molten zinc liquid and is not uniformly distributed. , it is difficult to mix uniformly, so that a Zn-Si alloy with uniform composition can be obtained.



The zinc wire includes: a process of heating metal Zn arranged in a crucible of a heating furnace to obtain a molten zinc solution; a process of heating metal Zn in the crucible in the heating furnace to obtain a molten zinc solution, a process that contains Si in Zn A method for producing a zinc alloy, characterized in that a metal Si powder in an amount capable of being melted at a temperature lower than the boiling point of Zn is added to the molten zinc, and the metal Si is suppressed by a floating suppressing member disposed in the crucible. The floating of the powder is heated in a state where the liquid surface of the molten zinc liquid is covered with a carbonaceous material to melt the metal Si powder, and the floating suppression member of the metal Si powder is released to suppress the floating of the metal Si powder, so that the The step of dispersing molten Si in the molten zinc to obtain a molten solution of Zn-Si alloy, and the process of filling the molten metal of Zn-Si alloy into a mold



The zinc wire melts metal Zn in a crucible arranged in a heating furnace. This is because at this time, the substances existing in the above-mentioned crucible are Zn and unavoidable impurities, and it can be regarded that only Zn exists in practice. Therefore, by heating the inside of the crucible with a heating furnace to a temperature of 420°C or higher, the melting point of Zn, metal Zn is melted, and a molten zinc (Zn) liquid can be obtained.



Next, metal Si powder is added to the molten zinc solution to melt the metal Si powder. Here, the melting point of Si alone is 1414C, which is a temperature exceeding 907C, the boiling point of Zn. However, by using a Zn-Si alloy, the melting point of Si can be brought to a temperature lower than the boiling point of Zn.



The zinc wire forms an alloy of Si and Zn, and the molten zinc is added in an amount of Si that can be melted at a temperature below the boiling point of Zn. In addition, at this time, if a part of the molten zinc is excessively heated, the The temperature of the molten zinc exceeds the boiling point of Zn. Therefore, the molten zinc liquid may volatilize as a gas and lose Zn. However, in the production method of the present invention, the molten zinc is heated in a state where the liquid surface of the molten zinc is covered with a carbonaceous material. Therefore, the carbonaceous material can prevent volatilization of Zn.



Next, after the metal Si powder is melted, the floating suppression of the metal Si powder by the floating suppressing member is released, and the molten Si is dispersed in the molten zinc solution. As a result, molten metal of Zn-Si alloy can be obtained.



For the zinc wire, preferably, the molten metal of the Zn-Si alloy is put into a copper mold, and the outer peripheral surface of the copper mold is water-cooled and quenched.



The zinc wire is preferably added with the metal Si powder in the range of 0.1 mass % or more and less than 2.0 mass % with respect to the total amount of the obtained Zn-Si alloy to the molten zinc. When the total amount of the obtained Zn-Si alloy exceeds 2.0 mass %, the segregation of Si may occur. Therefore, by making the addition amount of the above-mentioned metallic Si powder to be less than 2.0 mass % with respect to the total amount of the obtained Zn-Si alloy, it is possible to Segregation of Si is reliably prevented, and the above-mentioned Zn—Si alloy having a uniform composition is obtained.



Preferably, the floating suppressing member is made of a material that does not react with the molten zinc liquid, and includes an inner lid that is freely foldable along the inner peripheral surface of the crucible, and that supports the inner lid and moves the inner lid up and down. the rod. By having the above-described structure, the floating suppressing member can reliably suppress the floating of the metal Si powder.



Zinc wire is a structure that does not allow metal Si powder to pass through, but only allows molten zinc to pass through. As the inner cover having the above-mentioned structure, for example, an inner cover composed of a mesh body having meshes having a pore diameter smaller than the particle diameter of the metal Si powder, a plurality of through holes having a diameter smaller than the particle diameter of the metal Si powder, and The inner cover of the hole.



The above is the production method of zinc wire, if you want to know more, please feel free to contact us!