Water-Air Spray Cooling of Extruded Profiles: Process Integrated Heat Treatment of the Alloy EN AW-6082
Water-Air Spray Cooling of Extruded Profiles: Process Integrated Heat Treatment of the Alloy EN AW-6082
复制标题
挤压型材的水-空气喷雾冷却：合金 EN AW-6082 的工艺集成热处理
DOI：
10.1007/s11665-013-0563-6
复制
发表时间：
2013
影响因子：
2.3
通讯作者：
M. Schaper
中科院分区：
文献类型：
--
作者：
M. Nowak;O. Golovko;F. Nürnberger;I. Frolov;M. Schaper
在压线喷射冷却淬火是一种很有前途的硬化Al-Mg-Si合金的方法，可以减少型材变形。对于像EN AW-6082这样的合金，需要较高的冷却速率。将水和压缩空气喷雾冷却装置集成到一台10 MN卧式短行程液压挤压机上。研究了不同的喷雾参数。采用32个水气喷嘴，总水沉积速率约为15 L/min，挤压速度为2.5 m/min，可获得直径为30mm的挤压棒具有较高的力学性能。这种安排确保挤压合金被冷却到几乎室温。水淬火可以达到类似的性能，尽管用水量将高出十倍。测定了水沉积密度在型材表面的分布。结果表明，调整水-空气压力比可以在较大范围内控制型材的最终温度。在复杂剖面的横截面上，温度梯度的最小化可以减少剖面的畸变。
Quenching by spray cooling in the press line is a promising way to harden Al-Mg-Si alloys with regard to reducing profile distortion. For alloys such as EN AW-6082, high cooling rates are required. A device for spray cooling by means of water and compressed air was integrated into a 10 MN horizontal, hydraulic, short-stroke extrusion press. Various spray parameters were investigated. By using 32 water-air nozzles having a total water deposition rate of about 15 L/min and extruding with a profile velocity of 2.5 m/min, high mechanical properties were imparted to 30 mm diameter extruded rods. This arrangement ensures the extruded alloy is cooled to almost room temperature. Comparable properties can be achieved by water quenching, although the water consumption will be tenfold higher. The distribution of water deposition density on the profiles’ surfaces was determined. It was shown that an adjustment of the water-air pressure ratio allows the final temperature of the profiles to be controlled over a wide range. Minimization of temperature gradients in the cross section of complex profiles allows profile distortions to be reduced.
铝合金挤压过程中气体和喷雾淬火的模拟
DOI：
10.4028/www.scientific.net/kem.424.57
发表时间：
2010
期刊：
Key Engineering Materials
影响因子：
--
作者：
Schöne;Kessler;Grydin .O;Nürnberger F;Schaper M.
通讯作者：
Schaper M.