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在金属制作过程中可能采用各种加热操作。虽然其中某些操作对钢是惯用的,但对铝却非寻常。铝的性能与钢不同,而且高温对每种金属的影响也不相同。当铝被加热到熔点时,它并不发生色泽变化。为防止损伤,使机械性能的损失减至最小以及防止抗蚀性下降,必须控制温度。只要在船厂将对钢进行的常规操作加以调整,则热成型及火焰矫直也可有效地用于加工铝材。即使采用最佳工艺,热加工后的大型厚壁铝部件的性能值也低于所公布的最小值。因此设计长时间暴露在高温下的铝部件时,应考虑到上述性能的下降。船舶结构必须满足预先规定的平直度允许限度。通过采用火焰/骤冷法,可使扭曲的铝组合件矫直而符合标准。对于海军用的产品,船厂的各项工艺必须得到认可,并由经培訓的人员一丝不苟地遵循之,以获得合格的结果。
Various heating operations may be used in the metal fabrication process. Although some of these operations are customary for steel, they are unusual for aluminum. The performance of aluminum is different from that of steel, and the effect of high temperature on each metal is also different. When aluminum is heated to the melting point, it does not change color. In order to prevent damage, to minimize the loss of mechanical properties and to prevent corrosion degradation, the temperature must be controlled. As long as the normal operation of the steel at the shipyard is to be adjusted, thermoforming and flame straightening can also be effectively used to machine aluminum. Even with the best process, the performance of the hot-worked, large-thick aluminum parts is below the published minimum. Therefore, the design of aluminum components exposed to high temperature for a long time should take into account the above performance decline. The structure of the ship must meet the pre-specified allowable limits of flatness. By using the flame / quench method, the twisted aluminum assembly can be straightened to meet the standard. For naval applications, craft at the shipyard must be approved and meticulously followed by trained personnel to achieve acceptable results.