An Experimental Research on Quality and Strength of Aluminous Joint by Clinch Joining Technique

2013 ◽  
Vol 389 ◽  
pp. 217-222
Author(s):  
Yu Lin He ◽  
Liu Jun Huang
Keyword(s):  
Spot Welding ◽  
Processing Parameters ◽  
Structure Parameters ◽  
Blank Holder ◽  
Die Structure ◽  
Shearing Strength ◽  
High Shearing ◽  
Clinch Joining ◽  
Welding Technique ◽  
Electrical Apparatus

Due to its advantages over the spot welding technique, clinch joining technique is applied extensively in the automobile, electrical apparatus, etc. The quality and strength of the joints are the hot issues of the technique, which are severely affected by the processing parameters and die structure parameters. Clinch joining experiments of aluminous sheetsL5 were carried out under various blank holder forces and die structure parameters, and the influence of the parameters on the failure mode, section quality and strength of the joints were analyzed. The results show that the failure of the joints is mainly the shearing and a good section quality and high shearing strength of the joints can be obtained by reasonable processing parameters and die structure parameters.

Explosive Welding of Metal Sheets

2005 ◽  
Author(s):  
Yamato Matsui ◽  
Masahiko Otsuka ◽  
Shigeru Itoh
Keyword(s):  
Shear Strength ◽  
Spot Welding ◽  
Pure Titanium ◽  
High Strength ◽  
Commercially Pure Titanium ◽  
Magnesium Alloy Az31b ◽  
Metal Sheets ◽  
Shearing Strength ◽  
Commercial Applications ◽  
High Shearing

In this work explosive line and spot welding were used for the bonding of light-weight metal sheets. Materials involved are aluminum alloys 5052-O, 6061-T6, and 7075-T6, a magnesium alloy AZ31B-O and a commercially pure titanium (TP270C). Plates of similar and dissimilar metal combinations are explosion welded over a small overlapping area. The strength of the welds was measured using shear strength tests and the metal interface was analyzed using optical microscopy. The shear strength of the welds have been tested and appeared to high shearing strength. Explosive line and spot welding show a high strength to explosive mass ratio, making it a good candidate to be scaled up and used in commercial applications.

Design and Optimization of Technology and Structure Parameters for Sheet Metal Drawing by Orthogonal Experiment

2011 ◽  
Vol 295-297 ◽  
pp. 1714-1717 ◽  
Author(s):  
Li Jun Yang ◽  
Yan Mei Qi ◽  
Xi Nan Dang
Keyword(s):  
Sheet Metal ◽  
Orthogonal Experiment ◽  
Structure Parameters ◽  
Blank Holder Force ◽  
Nose Radius ◽  
Blank Holder ◽  
Design And Optimization ◽  
Optimum Parameters ◽  
Multi Stage ◽  
Die Structure

The deformability of sheet metal drawing is influenced by many technology and die structure parameters. By orthogonal experiment, the main four factors effected the deformability of sheet metal drawing have been studied in the two-stage drawing respectively. The results have shown the influencing order and optimum parameters of key factors were varied in different multi-stage sheet metal drawing. The influencing order of the four factors in the first drawing was the blank-holder force > dies radius>the lubricants>the punch-nose radius. The second drawing was dies radius>the lubricants>the punch-nose radius >blank-holder force. The optimum technology and structure parameters have been also determined by the experiments in the paper.

Fundamental Aspects, Mechanical Behaviour and Mathematical Understanding of Friction Spot Stir Welds: A Review

2021 ◽  
Vol 39 (11) ◽  
Author(s):  
Arash Fattahi ◽  
E.E. Supeni ◽  
M.K.A. Ariffïn ◽  
M.R. Ishak ◽  
Sahar Zolfaghari ◽  
...  
Keyword(s):  
Spot Welding ◽  
Mechanical Performance ◽  
Processing Parameters ◽  
Friction Stir Spot Welding ◽  
Mathematical Understanding ◽  
Environmental Conservation ◽  
Service Industries ◽  
Effective Control ◽  
Friction Stir ◽  
Welding Processes

The energy-saving and environmental conservation are increasingly important issues in manufacturing and service industries worldwide that have received considerable attention in recent years. Most importantly, this process eliminates the grain solidification errors generated by the standard fusion process. Thus, in this papers types and methods of stir welding will be explained and discussed accordingly .   Friction stir spot welding is a tunable method as it allows an effective control and amendment of processing parameters using refill and powder-assisted schemes that can solve the problem of the keyhole and mechanical weaknesses in the joining of light metals processed by conventional Friction stir spot welding. This comprehensive review mainly focuses on the fundamental aspects of Friction stir spot welding processes and their impacts on the microstructural features and mechanical performance and mathematical understanding of various similar and dissimilar systems. To conclude, the challenges in further modification of Friction stir spot welding and future outlooks in different engineering applications are presented.

A Study on the Explosive Welding of Three-Layer Panel

2014 ◽  
Vol 926-930 ◽  
pp. 354-357 ◽  
Author(s):  
Mian Jun Duan ◽  
Yao Hua Wang ◽  
Jin Hong ◽  
Jing Rong Zhou ◽  
Rui Ma
Keyword(s):  
Explosive Welding ◽  
Composite Panel ◽  
Titanium Plate ◽  
Alloy Plate ◽  
Metallurgical Bonding ◽  
Layer Composite ◽  
Shearing Strength ◽  
Wave Morphology ◽  
Moderate Condition ◽  
Welding Technique

Using an adjusted explosive welding technique, a Zr-2 alloy plate, a titanium plate and a carbon steel plate were cladded to form a three-layer composite panel which is difficult to manufacture by common methods. Microstructural evaluations reveal that a metallurgical bonding interface with wave morphology is realized, and the grains near the interface are smaller than grains in other areas. The microhardness of the sample near the interface is greatly higher than that of other areas. Furthermore, mechanical experimental evidence indicates the shearing strength of the interface in the moderate condition exceeds that of the interlayer plate.

Study of the Precision Forging of an Impeller by Numerical Simulation and Test Forming

2008 ◽  
Vol 141-143 ◽  
pp. 593-598
Author(s):  
Wei Wei Wang ◽  
Fei Han ◽  
Shou Jing Luo
Keyword(s):  
Numerical Simulation ◽  
Flow Line ◽  
Processing Parameters ◽  
Hydraulic Press ◽  
Isothermal Treatment ◽  
Billet Temperature ◽  
Precision Forging ◽  
Die Structure ◽  
Semi Solid ◽  
Forging Die

In the present paper, the precision forging of an impeller was studied by means of numerical simulation and test forming. Based on the structure and dimension of the impeller, the combination structure was used in the forging die to obtain the extrusion deformation. The forming processes were simulated with DEFORM-3D for different billet dimensions and processing parameters. The parameters, which could ensure the forming quality of the impeller, were determined by the calculations and analysis. The die structure and the billet dimensions were determined according to the simulation results, and the forging die was designed and manufactured. The billet with semi-solid microstructure was produced by means of the direct heating-isothermal treatment. The forming was conduced in an YX-315F hydraulic press, and the precision forgings of the impeller were produced successfully. Both of the simulation and the forming test show that the impeller forging can be formed with the combination structure die and the extruding forming stale satisfactorily. The ideal parameters to produce the precision forgings of the impeller are: billet temperature at 625°C, die temperature at 450°C and punch speed at 20mm/s. Under these conditions, forgings of the impeller can be produced with plump blades, smooth outer surface, and good flow line. This can match the requirements of the precision forging of impellers.

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