Method for producing copper bar alloy material by horizontal continuous casting production of scrap copper

Abstract

The invention discloses a method for producing a copper bar alloy material by horizontal continuous casting production of scrap copper. The method comprises the following steps of: adding threadlike and granular scrap copper, boron alloy and impurity-removing solvent to a furnace for heating and melting completely; adding irregular scrap copper, using a stirring rod or a salvaging gourd ladle to stir; salvaging out the iron cakes after the stirring is stopped; adding rare earths, zinc ingots and calcium-magnesium powder to carry out thermal-insulation refinement, wherein the refining temperature is 980 DEG C to 1020 DEG C and the refining time is 20 minutes to 30 minutes, and salvaging again after the thermal-insulation refinement; and putting the qualified copper liquid to the thermal-insulation copper liquid for stewing for 20 minutes and then carrying out horizontal continuous casting, wherein the temperature of the continuous-casting cooling water is 40 DEG C to 45 DEG C, the water-carrying capacity is 4m<3>/min to 5m<3>/min and the stretching speed is 3m/min to 3.2m/min. The method disclosed by the invention is adopted to produce the copper bar, so that the production cost is low, the process flow is short, the environment benefits are good, and the performances of the brass bar are good. The grain size of the copper bar is 0.015mm to 0.03mm, the ratio of the alpha phase crystalline grains to the beta phase crystalline grains is 3:1; air holes and cracks which are visible by naked eyes are not formed during the polishing mirror-surface detection; the tensile strength is 290 MPa; and the extensibility is bigger than 20%.

Description

technical field [0001] The invention relates to a process for producing copper rod alloy materials by horizontal continuous casting, in particular to a method for producing copper rod alloy materials by horizontal continuous casting of scrap copper. Background technique [0002] With the improvement of people's living standards, high-end sanitary ware has developed rapidly in recent years. At present, such products have extremely strict requirements on surface quality, strength, toughness and other properties. This requires that the copper rod alloy materials used in high-end sanitary ware have good Organizational structure and mechanical properties. The commonly used brass bar processing raw materials in my country mainly use more than 80% red copper and zinc, and 20% single-grade recycled brass as the main raw material. In addition, the use of zinc oxide in the brass melting and casting process will also damage the surrounding natural environment; the traditional brass rod...

AI Technical Summary

Problems solved by technology

The commonly used brass bar processing raw materials in my country mainly use more than 80% red copper and zinc, and 20% single-grade recycled brass as the main raw material. In addition, the use of zinc oxide in the brass melting and casting process will also damage the surrounding natural environment; the traditional brass rod production process mainly adopts melting and casting-hot extrusion, horizontal continuous Casting or up-drawing continuous casting methods are used to manufacture billets, and then cold rolling or stretching methods are used. Although the performance of the rods produced by this method is good, the process is long and the cost is high.

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