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数控切割机设备功率转化能效的特点介绍

2017-11-27 点击数:1236
机身零件绝大多数采用铝板,传统上,使用7000系列锌基铝合金来进行加工,这是因为该合金具有良好的静止力度和疲劳强度。虽然7000系列铝材料很适合航空应用,但是它们不耐高温。
Most of the body parts are made of aluminum plate, and the traditional 7000 series zinc based aluminum alloy is used for processing. The reason is that the alloy has good static strength and fatigue strength. Although the 7000 series of aluminum materials are suitable for aviation applications, they are not resistant to high temperature.
快速加温,如焊接和激光切割等操作,会导致微裂痕。微裂痕导致疲劳强度的降低。焊接和激光切割是两种产生热致微裂痕的加工。长时间以来,在7000系列铝板的加工中,激光器的优势一直由于疲劳性能的降低而未能得到发挥。
Rapid heating, such as welding and laser cutting, can cause micro cracks. Micro cracks lead to lower fatigue strength. Welding and laser cutting are two processes to produce thermally induced microcracks. For a long time, the advantage of the laser has not been brought into play since the reduction of the fatigue performance in the processing of the 7000 series aluminum plate.
疲劳断裂通常发生在应力集中的地方,如零件的边缘,几何形状变化处,或者接合处。薄板金属制成的机身零件有很多不同的接合方式,绝大多数的疲劳裂痕发生在接合处。如果激光没有被用于切割接合处的小孔,那么激光主要就用于零件的边缘切割。
Fatigue fracture usually occurs in the stress concentration area, such as the edge of the part, the geometric change, or the joint. The fuselage parts made of sheet metal have many different ways of joining, and most of the fatigue cracks occur at the joints. If the laser is not used to cut holes in the joint, the laser is mainly used for the edge cutting of the parts.
对于其它的效应,可以采用最易损坏的连接位置来说明与连接处相比,激光切割带来的微裂痕幷非主要的损坏部位。这样,我们就能得出结论:如果一个零件有可能在连接处断裂,那么激光切割技术不会进一步损坏零件的疲劳特性。
For the other effect, can use the most easily damaged to illustrate the connection position compared with the connection, laser cutting caused by micro cracks and damaged parts of the main. In this way, we can conclude that if a part is likely to fracture at the joint, then the laser cutting technique will not further damage the fatigue characteristics of the parts.

更重要的是在激光切割过程中,技术人员已经可以对切割参数进行控制,幷且利用计算器软件进行精确的重复。这些技术进步使得人们对激光切割是否适用于机身结构的生产重新思考。今后的机身系统以及现有的设计不应因为过去的经验而排除激光器在该机身系统中的可能应用。我们应该保持冷静的头脑与开放的态度来分析各种情况,以确定激光技术在航空制造业中是否可以带生产效益。

铝切割设备

It is more important in the laser cutting process, technical staff has to control the cutting parameters, and accurately repeated use of the calculator software. These technological advances have led to a rethink of whether laser cutting is suitable for the production of airframe structures. Future airframe systems and existing designs should not be excluded from possible applications of the laser in the airframe system due to past experience. We should keep a cool head and an open attitude to analyze the situation in order to determine whether laser technology can bring production benefits in the aviation manufacturing industry.
因此,金属激光切割机在切割7000系列铝材时,对质量和加工控制是至关重要的。任何给加工带来不确定因素的过程都必须加以控制或者直接排除。
Therefore, the metal laser cutting machine is very important for quality and process control when cutting 7000 series aluminum material. Any process that brings uncertainty to the process must be controlled or ruled out directly.
不过,在目前的金属激光切割系统中,这些激光切割在航空应用中的局限性都得到改进,这些局限性包括疲劳性能和制造过程一致性降低的问题。现在,激光系统在很大程度上减小了热影响区域的大小和相应的微裂痕。
However, in the current metal laser cutting system, the limitations of these laser cutting applications in aviation have been improved, and these limitations include fatigue performance and manufacturing process consistency reduction problem. Now, the laser system greatly reduces the size of the heat affected zone and the corresponding microcracks.
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