VAC AERO International received orders for three complete all-metal hot-zone refurbishments for customers in Florida, Connecticut and Indiana in the aerospace, medical and commercial heat-treatment industries. The retrofit work is for two horizontal furnaces and one vertical furnace. VAC AERO hot zones feature unitized construction for easy removal and maintenance. The lightweight design’s low thermal mass enables faster quenching and longer life.

 The heat-shield package consists of one layer of 0.020-inch-thick lanthanated molybdenum sheet backed by one layer of 0.010-inch-thick molybdenum sheet and three layers of 0.014-inch stainless steel sheet. The heat-shield package is supported by a 14-gauge stainless steel assembly that also acts as a manifold to distribute the quenching gas uniformly throughout the workload.