Adhesion of batch hot-dip galvanized components

被引:0
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作者
Björn Abeln
Thomas Pinger
Carl Richter
Markus Feldmann
机构
[1] RWTH Aachen University,Institute of Steel Construction
[2] ZINQ® Technologie GmbH,undefined
[3] CBI Center Building and Infrastructure Engineering GmbH,undefined
关键词
Structural steel; Batch hot-dip galvanizing; Adhesive bonding; Zinc phase structure; Stiffness and strength investigations; Surface pre-treatment methods;
D O I
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中图分类号
学科分类号
摘要
Structural bonding of batch hot-dip galvanized components poses a particular challenge against the background of the build-up of the zinc coating in the form of different zinc-iron phases. As part of a research project, parameters influencing the zinc coating, the pre-treatment of the zinc substrate, and the adhesive were investigated with regard to the load-bearing capacity of a bonded joint. The variation of the zinc coatings was achieved by using four different steel grades in combination with four batch galvanizing processes. Therefore, small-scale, thick shear tensile specimens were uniformly fabricated, galvanized, bonded in pairs, and mechanically tested. A second series of tests was aimed at the feasibility of an adhesive bond of batch galvanized, medium-scale components under realistic boundary conditions. The test specimens were produced by varying the surface preparation and the adhesive and tested mechanically to shear failure. The results of both test series show that zinc-coated components can be adhesively bonded well and reliably, and, by this, a high load-bearing capacity can be achieved in the bonded joint. The small-scale tests clearly show that the type of zinc coating and its structure obviously have a significant influence on the load-bearing capacity. In summary, it can be stated that the relevant material and process-related influences on the shear load-bearing behavior of bonded joints of batch hot-dip galvanized components were demonstrated by means of the two test series, and the basis for implementing such joints on real load-bearing structures was laid. The presented procedure (small-scale tests and component tests) can be used as a suggestion for a later application in practice.
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页码:5197 / 5209
页数:12
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