Mn-containing creep-resisting rolled zinc alloy belt material and preparation method thereof

一种含Mn的抗蠕变轧制锌合金板带材及其制备方法

Abstract

一种含Mn的抗蠕变轧制锌合金板带材,按重量百分比由下述组分组成:铜0.5~3.0%,锰0.01~2.0%,钛0.05~0.3%,其余为锌和总量小于0.05%的杂质。合金组分按质量百分比还可以含有:X 0.01~0.5%,X为铝、稀土元素(Ce+La)中的至少一种。其制备方法是:采用覆盖保护法熔炼,合金元素以纯锌、Zn-Cu、Zn-Ti、Cu-Mn、纯铝、Ce+La复合稀土的形式加入;熔炼温度650~740℃;在420~480℃浇铸;铸锭经350~380℃均匀化退火6~10h后;在220~280℃进行多道次热轧,总变形量60~95%;再冷轧,总变形量50~80%;轧制后在180~200℃退火2~3h。本发明合金具备优良的抗蠕变性能、热加工性能和力学性能,适用于建筑装饰、运输、仪器仪表等领域。
The invention relates to a Mn-containing creep-resisting rolled zinc alloy belt material. The material comprises the following components in percentage by weight: 0.5 to 3.0 percent of copper, 0.01 to 2.0 percent of manganese, 0.05 to 0.3 percent of titanium and the balance of zinc and less than 0.05 percent of impurities. An alloy component can also contain the following component in percentage by mass: 0.01 to 0.5 percent of X, wherein the X is at least one of aluminum and rare earth elements (Ce+La). A method for preparing the material comprises the following steps of: smelting by a protective covering method and adding alloy elements in the forms of pure zinc, Zn-Cu, Zn-Ti, Cu-Mn, pure aluminum and Ce+La composite rare earth, wherein a smelting temperature is between 650 and 740 DEG C; pouring at the temperature of between 420 and 480 DEG C; uniformly annealing cast ingots at the temperature of between 350 and 380 DEG C for 6 to 10 hours; performing hot rolling for multiple times at the temperature of between 220 and 280 DEG C, wherein total deformation is between 60 and 95 percent; performing cold rolling, wherein the total deformation is between 50 and 80 percent; and after rolling, annealing at the temperature of between 180 and 200 DEG C for 2 to 3 hours. The alloy of the invention has high creep resistance, hot processing performance and mechanical property and is suitable for the fields of building decoration, transportation, instruments, meters and the like.

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