First Application of Hybrid Laser-arc Welding to Commercial Ships
First Application of Hybrid Laser-arc Welding to Commercial Ships
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激光电弧复合焊首次应用于商船
DOI：
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发表时间：
2010
期刊：
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通讯作者：
Shuho Tsubota
中科院分区：
文献类型：
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作者：
H. Koga;H. Goda;S. Terada;K. Hirota;Shin Nakayama;Shuho Tsubota
三菱重工有限公司 (MHI) 一直致力于提高船体分段精加工的精度，并减少安装在码头上的其他分段的组装操作数量，旨在建立高精度的建造方法。我们推出的技术之一是激光电弧复合焊，该技术需要低热量并减少焊接变形。过去，这种方法需要大量的初期投资，除了一些专门生产客船的欧洲造船厂外，它在造船业中并不流行。我们开发了一种需要简单设备的程序，可以在遵循传统造船程序时使用。该方法已应用于一般商船，现介绍如下。 |1.引言通用商船的高精度建造方法有望减少建造船舶所需的时间并提高产品质量。该方法有望有效应对韩国和中国造船厂日益激烈的竞争。为了实现我们的目标，需要减少焊接变形。因此，我们考虑了在造船业中采用混合激光电弧焊的可能性，这大大减少了焊接变形。这种焊接方法结合了激光焊和电弧焊的优点，主要由欧洲造船厂和船级社于20世纪90年代开发。它主要被专门建造客船和大型游艇的欧洲造船厂采用。该方法采用低热焊接，减少焊接件的变形。然而，它需要对大型机械设备进行初始投资，尽管考虑了引进的可能性，但只有少数造船厂采用了它。我们开发了一种激光电弧复合焊接方法，不需要大型设备，并且可以按照传统的钢板对接焊接程序进行使用。该焊接方法已获得船级社认可并已应用于实船。
Mitsubishi Heavy Industries, Ltd. (MHI) has been working to improve the accuracy of hull-block finishing and reducing the number of assembly operations for other blocks while mounted at the dock, aiming to establish a high-accuracy building method. One of the techniques we have introduced is hybrid laser-arc welding, which requires low heat and reduces welding deformation. In the past, this method has required a large initial investment, and it has not been popular in the shipbuilding industry, except at some European shipyards that specialize in passenger ships. We have developed a procedure that requires simple equipment and can be used while following conventional shipbuilding procedures. This method, which has already been applied to general commercial ships, is described below. |1. Introduction A high-accuracy building method for general commercial ships is expected to reduce the time required to build a ship and improve the product quality. The method is expected to be an effective response to the intensifying competition from Korean and Chinese shipbuilders. To realize our goal, welding deformation needs to be reduced. We therefore considered the possibility of employing hybrid laser-arc welding in shipbuilding, which substantially reduces welding deformation. This welding method, which combines the advantages of laser welding and arc welding, was developed in the 1990s mainly by European ship builders and the Classification Society. It has been employed mainly by European shipbuilders that specialize in the construction of passenger ships and large yachts. The method makes use of low-heat welding, reducing the deformation of welded parts. However, it requires an initial investment in large-scale machinery equipment, and it has only been employed by a few shipbuilders, although they considered the possibility of introduction. We have developed a hybrid laser-arc welding method that does not require large-scale equipment and that can be used while following conventional procedures for butt welding steel plates. The welding method was approved by the Classification Society and has been applied to actual ships.