文档介绍：专科毕业设计(论文)
设计题目: 船体分段装配中对焊接变形的处理研究
系部: 船舶与港口工程系
专业: 船体工程
班级:
姓名: 学号:
指导教师: 职称:
2011年6月9日
目录
目录 I
摘要 II
Abstract III
1 绪论 1
2 船体分段及分段装配概述 1
船体各分段装焊简析 1
3 分段装配中焊接变形 2
分段变形的处理 2
分段装配中对焊接变形的矫正措施 2
火工矫正的加热方式 3
4 分段装焊后的火工矫正 5
平面分段变形矫正 5
分段拼板对接焊缝变形矫正 8
分段外板边角的变形的矫正 9
分段外板与肋板型线不吻合矫正 9
分段吊运变形的矫正 10
5 控制分段变形的措施 10
结构设计上的措施 10
焊接工艺上的措施 10
装配工艺上的措施 11
结论 12
致谢 13
摘要
船体建造的经验表明, 部件和分段在焊接过程中发生的变形使船体的装配和电焊大大地复杂化了。在分段合拢时, 由于焊接变形, 大量时间用在矫正和铲割工作上。焊后矫正结构变形则带来很大的耗费,影响整个经济效果和建造进度。因此掌握焊接变形和发生的规律, 在船体装配时就拟订施工工艺确定该结构可能有的变形量是一个很重要的问题。当前, 实现精度造船中的无余量装配先进工艺的前提条件之一, 就是必须预先估计结构焊后产生的变形量。焊接结构的设计及其施工工艺的拟订, 除了保证结构强度和结构的使用性能外, 还应当考虑如何使焊接变形量最小。也就是应当从获得最小变形的观点来选择最合适的结构和施工工艺。如果这些都不能保证结构达到所要求的公差,这时就可以用相应改亦零件尺寸和反变形的方法来补偿由计算确定的预计变形量以达到公差要求。
关键词:船体;分段装配;焊接变形控制
Abstract
Experience has shown that the hull construction, components and sub in the welding deformation occurred during the assembly and welded to the hull plicated. In the section closed, due to welding distortion, a lot of time with a shovel in the correction and cut work. Correction of structural deformation after welding is a great deal of cost, effectiveness and impact of the construction progress of the entire economy. So master the welding deformation and the occurrence of law, developed in the hull construction of the assembly process to determine when possible deformation of the structure is a very important issue. Currently, to achieve accuracy of shipbuilding in the assembly of non-margin one of the prerequisites of advanced technology, is the need to anticipate structural deformation arising after welding. The design of welded structures and construction technology development, in addition to structural strength and structure to ensure that the use of performance, but also should consider how to minimize welding deformation. That is, should be the minimum distortion from the point of view to choose the most appropriate structure and constructi