研究目的
Investigating the thermal joining of thermoplastics to metals with a focus on surface preparation of steel based on laser radiation and tungsten inert gas arc process.
研究成果
Surface pretreatment increases ultimate tensile strength and tensile shear strength, with the value depending on the structuring process, material combination, and joining parameters. Laser structures ensure a high level of ultimate tensile strength, while TIG structures offer a cost-efficient surface pretreatment with higher area output.
研究不足
The study is limited to specific materials (steel and PA 6) and joint configurations (spot and overlap joints). The TIG structuring process shows a lower ultimate tensile strength compared to laser structures.
1：Experimental Design and Method Selection:
The study compares TIG arc and laser-based surface preparation methods for joining thermoplastics to metals.
2：Sample Selection and Data Sources:
Steel (
3：0330) and galvanized steel (0322 Z100) were used as metallic materials, and Polyamide 6 (PA 6) as the thermoplastic joining partner. List of Experimental Equipment and Materials:
A 6-axis robot, a vacuum clamping device, an anodic polarization welding torch, a conventional welding machine (EWM Tetrix), and diode laser (Laserline LDM 1000) were used.
4：Experimental Procedures and Operational Workflow:
Surface preparation was performed using TIG arc and laser processes, followed by thermal joining and mechanical testing.
5：Data Analysis Methods:
Ultimate tensile strength and tensile shear strength were evaluated using universal testing machines, with fracture behavior analyzed through image processing.
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