Solvent for non-vacuum melting of chromium-bronze alloy

Abstract

The invention relates to a solvent for non-vacuum melting of chromium-bronze alloy. The solvent is characterized by comprising the following components in part by weight: 25 to 30 parts of quartz glass, 35 to 40 parts of anhydrous borax, 15 to 20 parts of cryolite and 15 to 20 parts of fluorite. The solvent covers a liquid stone of a hearth to form a viscous covering protective layer which can tightly seal the liquid level to prevent the air from contacting copper liquid to avoid oxidation slag-making melting loss; when the solvent is used for covering, as long as the operation is standard, the melting loss of chromium is about 1.5 percent; the solvent is a solvent special for casting chromium-zirconium-copper alloy under the non-vacuum condition, raw materials of the solvent are common in the market and are convenient to purchase, and the preparation process is simple, and easy to operate; after the solvent is used, the environment of the production field is obviously improved; and the solvent can make harmful gas in the copper liquid effectively released, and also can remain oxide in the copper liquid on the surface of the solvent to ensure that the surface of a cast ingot is smooth and does not have defects such as oxideinclusion, air holes and the like.

Description

technical field [0001] The invention relates to a solvent for smelting, in particular to a solvent for non-vacuum smelting chromium bronze alloy. Background technique [0002] During the smelting and casting process of chromium-zirconium copper, the oxidation of chromium and zirconium is very serious, the burning loss is large, the composition is extremely difficult to control, and the amount of slagging is large, resulting in slag inclusion on the surface of the ingot, especially the burning loss of zirconium is more serious. A difficult problem has not been well resolved. Therefore, the traditional melting and casting of chromium-zirconium copper can only be realized in vacuum. The vacuum furnace equipment is expensive, and the process is complicated, the production capacity is low, and the production cost is high. Solvent is a very important link. [0003] In the prior art, when casting chromium-zirconium copper alloys under non-vacuum conditions, charcoal, pyrotechnics...

AI Technical Summary

Problems solved by technology

[0002] During the smelting and casting process of chromium-zirconium copper, the oxidation of chromium and zirconium is very serious, the burning loss is large, the composition is extremely difficult to control, and the amount of slagging is large, resulting in slag inclusion on the surface of the ingot, especially the burning loss of zirconium is more serious. A difficult problem has not been well resolved

Therefore, the traditional melting and casting of chromium-zirconium copper can only be realized in vacuum. The vacuum furnace equipment is expensive, and the process is complicated, the production capacity is low, and the production cost is high. Solvent is a very important link

[0003] In the prior art, when casting chromium-zirconium copper alloys under non-vacuum conditions, charcoal, pyrotechnics, etc. are often used to cover the copper liquid to avoid oxidation caused by the contact between the atmosphere and the copper liquid. The burning loss of chromium is about 30%. larger

In addition, charcoal, soot, etc. are used for covering, and the production site is dusty and the environment is very dirty

Moreover, charcoal will consume a large amount of wood resources, the market is in short supply, and the price is relatively high