Non-vacuum smelting casting tech. of Cu-Cr-Zr alloy and Cu-Zr alloy

Abstract

This invention relates to an anti-vacuum method to cast alloy Cu-Cr-Zr and Cu-Zr. The processes of producing alloy Cu-Cr-Zr is as follows: a. making the element Cr, Zr, Al and Mg which are apt to oxygenizing into intermediate alloys, b. d and heated to 1350 deg.C, sampling after adding into the intermediate alloys Cu-Cr and melting the mixture, then analyzing the Cr content of sample. If the content of Cr is accepted, adding into the intermediate alloys Cu-Al, then adding into intermediate alloys Cu-Zr-Mg after heating. When the temperature is high enough to cast, we can cast to get alloy Cu-Cr-Zr. The processes of producing alloy Cu-Zr is as follows: a. making the element Zr, Al and Mg which are apt to oxygenizing into intermediate alloy, it can be used as the material subsequently, b. after melting the copper and covering reagent together, adding into the alloy Cu-Al and heating, then adding into the intermediate alloy Cu-Zr-Mg, when it reaches the casting temperature, the crystallizer and launder are covered by the carbon ink, we finish the casting and get the alloy Cu-Zr. This method gets rid of the production of alloys Cu-Cr-Zr and Cu-Zr with vacuum furnace and the high cost of the alloy.

Description

1. Technical field: [0001] The invention relates to a non-vacuum melting and casting process for copper alloys with high strength and high conductivity, especially for Cu-Cr-Zr alloys and Cu-Zr alloys under atmospheric conditions, using induction furnace melting and semi-continuous casting Realize the production process of melting and casting of these two alloys. 2. Background technology: [0002] Cu-Cr-Zr alloy (C18150) and Cu-Zr alloy (C15000) are the grades of copper alloys in the ASTM standard of the American Society for Testing and Metal Materials. This alloy has the characteristics of high strength and high conductivity, and is mainly used in the production of automatic welding machines It is an alloy with very promising market prospects, such as the electrode of the electrode, the frame material of the electronic industry, the sliding wire of the electrified railway locomotive, and the material of the large cast steel crystallizer. The melting and casting of these tw...

AI Technical Summary

Problems solved by technology

At present, the melting and casting of these two alloys is generally produced in a vacuum furnace in China. This method has low production efficiency and high cost, and the maximum capacity of a vacuum furnace that has passed the domestic quality standard is 500Kg, which cannot meet the needs of electrified railway locomotive slide lines and large cast steel crystallization. The weight of a single piece of material is greater than 1 ton, and imported large-capacity vacuum furnaces are expensive. In developed countries such as the United States and Japan, non-vacuum melting technology has been adopted, but special melting equipment is required, and many gas protection measures have been added. Large investment in equipment

Due to the limitation of melting and casting technology, the expansion, popularization and application of the production scale of these two alloys are seriously restricted.

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