Effect of Pressing Parameters on the Quality of Joint Formation of Heat Exchanger Fins with the Base Plate

In this paper, the results of experimental and numerical studies on joining the thin fins to the thick base plate of a heat exchanger are presented. The elements of the heat exchanger were joined by using developed method of press forming. The joining technology consists in clamping the sheet metal...

Full description

Saved in:
Bibliographic Details
Published in:MATEC web of conferences 2019, Vol.290, p.3009
Main Authors: Kowalik, Marek, Trzepiecinski, Tomasz, Lemu, Hirpa G.
Format: Article
Language:English
Subjects:
Aluminum base alloys
Backward extrusion
Base plates
Finite element method
Fins
Geometry
Heat exchangers
Indentation
Metal sheets
Parameters
Plate material
Press forming
Punches
Thermal energy
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, the results of experimental and numerical studies on joining the thin fins to the thick base plate of a heat exchanger are presented. The elements of the heat exchanger were joined by using developed method of press forming. The joining technology consists in clamping the sheet metal into the channel of the base plate using a punch with specific geometry. The effect of different configurations of the punch geometry (shape, radius and distance between fin and punch) and the indentation depth on the depth of the interface between the fin and base plate is analysed. Furthermore, the effect of different combinations of fin-base plate materials has been numerically studied. The plate material was the AA2219 -T851 aluminium alloy, while the fins were made of the AA5251 aluminium alloy. The elastic-plastic numerical computations of the joining process have been carried out using the finite element-based MSC.Marc program. It was found that the area of the contact of the fin with the base plate can be optimised by choosing the right parameters of the tool geometry and technological parameters. Experimental research has shown that increasing the punch indentation causes the material to flow in the transverse direction to the punch and the indirect extrusion in the region between the punches.
ISSN:2261-236X
2274-7214
2261-236X
DOI:10.1051/matecconf/201929003009