The invention discloses a two-stage solid solution heating device and a method for aluminum alloy thick plate, and the solid solution heating device is a roller hearth type solid solution furnace, which is divided into an intermediate temperature solid solution furnace and a high temperature solid solution furnace. The temperature of solid solution is much higher than the first level of furnace heating to solution temperature, the high temperature solution of furnace heating to much higher than the second level of solution temperature; and put in the Aluminum Alloy plate temperature solution furnace, heating plate temperature to the first level until the solution temperature, the furnace temperature fast downhill to the first stage solid solution temperature; finally, the thick plate transfer to high temperature solution furnace continues to heat up, when the plate temperature to two solution temperature, the furnace temperature is reduced to two of solid solution temperature. The invention can quickly and efficiently heat the aluminum alloy thick plate to the solid solution temperature, reduce the heat treatment time and improve the production efficiency, and at the same time, avoid the performance loss caused by long time heating. The process is easy to operate, cost saving, and has practical application value in industrial production.
【技术实现步骤摘要】
一种铝合金厚板的双级固溶升温装置及方法
本专利技术涉及一种铝合金厚板的热处理方法,属于有色金属材料及其热加工领域。
技术介绍
铝合金厚板因其在制造成本、结构减重和成形性等方面的综合优势,在航空、航天、航海和交通运输等重要的轻量化整体结构中应用广泛。工业用铝合金厚板一般为固溶可强化型铝合金,需要通过固溶、淬火、时效等固溶工艺获得高强度、高韧性及耐腐蚀性能。对于铝合金厚板,双级固溶固溶制度可在固溶阶段预先析出Al3Zr粒子,可有效的抑制再结晶,以提高其力学性能。现有双级固溶升温方法一般未考虑大厚板的升温迟滞效应,直接将炉气温度升温至目标固溶温度,此时,铝合金厚板温度将远低于目标固溶温度,无法达到双级固溶的效果。而且这种升温速度过慢,要达到固溶温度,需要会大幅延长升温时间,降低生产效率。同时,在高温下长时间保温可能造成晶粒组织长大,降低材料性能。高性能铝合金厚板所制造的结构件是航空、航天、航海和交通运输等重要的轻量化整体结构的关键部位,其性能及均匀性制约着该类构件承载能力与服役安全。随着目前该类铝合金结构的发展趋于大规格整体化与高综合性能化,对大规格铝合金厚板的固溶工艺 ...
【技术保护点】
一种铝合金厚板的双级固溶升温装置及方法,其特征在于,固溶加热装置为辊底式固溶炉,分为中温固溶炉膛和高温固溶炉膛两个部分,首先将中温固溶炉膛加热至比第一级固溶温度高20‑300°C,将高温固溶炉膛加热至至比第二级固溶温度高20‑200°C;然后将铝合金厚板放入中温固溶炉膛,直至厚板温度升温至第一级固溶温度,再把炉膛温度快速降至第一级固溶温度保温;最后将厚板转移至高温固溶炉膛继续升温,当厚板温度升温至二级固溶温度时,把炉膛温度降低至二级固溶温度保温;厚板达到第一级和第二级固溶温度的时间均由公式:
【技术特征摘要】
1.一种铝合金厚板的双级固溶升温装置及方法,其特征在于,固溶加热装置为辊底式固溶炉,分为中温固溶炉膛和高温固溶炉膛两个部分,首先将中温固溶炉膛加热至比第一级固溶温度高20-300°C,将高温固溶炉膛加热至至比第二级固溶温度高20-200°C;然后将铝合金厚板放入中温固溶炉膛,直至厚板温度升温至第一级固溶温度,再把炉膛温度快速降至第一级固溶温度保温;最后将厚板转移至高温固溶炉膛继续升温,当厚板温度升温至...
【专利技术属性】
技术研发人员:邓运来,范世通,龙涛,张研,黄心悦,欧世声,徐进军,
申请(专利权)人:中南大学,
类型:发明
国别省市:湖南,43
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