Easily cut and easily hot-forged brass alloy suitable for horizontal continuous casting

Abstract

The invention discloses easily cut and easily hot-forged brass alloy suitable for horizontal continuous casting. The brass alloy comprises the following components in percentage by weight: 70-72 percent of copper, 2-4 percent of silicon, 0.2-0.5 percent of tellurium, 0.05-0.15 percent of phosphorus, 0.01-0.05 percent of lead and the balance of zinc and inevitable impurities, wherein the weight percentage of the copper, the zinc, the silicon, the tellurium and the phosphorus is 99.5 percent by weight. The brass alloy provided by the invention is leadless and environment-friendly; a product obtained by the invention is extremely easy to cut; and the relative cutting rate can reach over 85 percent. Annealing is not required in a preparation process; and the process is simple and convenient. The copper content is over 70 percent, and the product keeps good hot forging performance. The tensile strength of the obtained product can reach 530-560 MPa, the yield strength can reach 480-500 MPa and the extensibility is 10-13 percent.

Description

1. Technical field [0001] The invention relates to a brass alloy material. 2. Background technology [0002] The main materials of plumbing pipes, connecting fittings, and valve sanitary ware in today's domestic civil water supply and drainage systems are lead brass with high lead content. With the improvement of people's living standards, people's requirements for environmental protection have also increased accordingly. Drinking water It cannot be polluted by excessive lead in pipes and valves, so traditional brass materials are increasingly unable to meet the needs of people's lives. The European Union officially implemented the "ROHS" directive (the restriction of the use of certain hazardous substances in electrical and electronic equipment, the restriction of the use of certain hazardous substances in electrical and electronic equipment) on July 1, 2006, and the amount of lead in it is 0.1 % or less, lead-free copper alloys in the United States require a lead content ...

AI Technical Summary

Problems solved by technology

At present, some manufacturers have successively developed low-lead or lead-free brass materials. Although they are used in a small range, their cutting performance is not high, the effect of hot forging and rolling is not ideal, and the surface quality of horizontal continuous castings is poor, so surface annealing treatment is required.

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