在原型架上测试斜面卷曲连接

Nikodem Wróbel, Michał Rejek, G. Królczyk
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引用次数: 2

摘要

摘要本研究的目的是在设计的原型架上,通过压接操作,形成并测试换热器结构中常用的不可分紧密接头。压接接头是用两种形状的锥形刀具加工而成的,所设计的两种刀具具有相同的成形角度。本研究采用两种连接块和板,孔和法兰的直径不同。细化包含了一个案例研究的关节是由立场,除了一些情况下的压接操作粘或钎焊。本文介绍了成形接头的特点,并对其进行了破坏性检测:显微检查、拉伸强度测试和无损检测:泄漏测试。所检查的元件由铝6060制成,它非常适合于各种冷却器或冷凝器的间接或直接成形接头的操作。本研究中详细的试验和研究表明,小直径连接块与板的连接比大直径样品组的连接能耗大,使用胶水可使连接块的强度提高20%,通过钎焊操作进行机械粘接或修改钳口几何形状可使连接块的强度显著提高
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Testing of beveled crimp connections made on a prototype stand
Abstract The purpose of this study is to form and test inseparable tight joints, commonly used in the construction of heat exchangers, by crimping operation on designed prototype stand. Crimped joints are made by tools in form of cones with two types of shapes, each of the designed tools have got identical forming angle. This study uses two types of connecting blocks and plates, differing in diameters of hole and flange. Elaboration contains a case study of joints being made by the stand, which in addition to the crimping operations for some cases were glued or brazed. The article presents the features of the formed joints, by examining them by destructive testing: Micrography, tensile strength test, and non-destructive testing: Leakage test. The examined elements have been made of aluminum 6060, which is well suited to indirect or direct operations of forming joints for all kinds of coolers or condensers. Elaborated tests and studies in this study allowed to state, that joining the connection block to plate with the small diameter, was more energy-consuming than in sample sets with bigger diameter, use of glue increasing the strength of the joints by 20%, significant strength increase can be obtained after mechanical clinching with brazing operation or modification of geometrical shape of the jaws
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