Welding process, die cast part and actuator housing
By using an Al-Mg-Fe alloy and a blue diode laser welding process, the problem of hydraulic sealing welding of aluminum die castings has been solved, achieving high-quality fluid sealing welding, reducing costs and weight, and meeting electromagnetic compatibility requirements.
CN116323081BActive Publication Date: 2026-07-07SCHAEFFLER TECHNOLOGIES AG & CO KG +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SCHAEFFLER TECHNOLOGIES AG & CO KG
- Filing Date
- 2021-08-10
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
Aluminum die castings cannot form a hydraulically sealed welded connection during welding, resulting in a coarse-pore weld structure.
Method used
Die-cast parts made of Al-Mg-Fe alloy are welded using a fluid-sealed method with a blue diode laser and no welding filler. The alloy composition is Mg content of 4% ≤ Mg ≤ 4.6%, Fe content of 1.31% ≤ Fe ≤ 1.7%, and silicon content is controlled to be within 0.2%.
Benefits of technology
This technology enables fluid-sealed welding of aluminum die-cast parts with other metal components, reducing costs and weight while improving welding quality and uniformity, and meeting electromagnetic compatibility requirements.
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Smart Images
Figure CN116323081B_ABST
Abstract
The invention relates to a welding process for welding a die-cast component made of an Al-Mg-Fe alloy to at least one further metal component in a fluid-tight manner. For the aluminum alloy, a mixture is used with a Mg content of 4% ≤ Mg ≤ 4.6%, a Fe content of 1.31% ≤ Fe ≤ 1.7%, and further alloying components including a Si content of at most 0.2%. The Fe content includes both eutectic components of Al-Mg-Fe and hypereutectic components of both Fe and Mg alloying components. The welding uses a blue diode laser and does not use a welding filler. The invention also relates to a die-cast component which is welded to at least one further metal component, wherein the welded connection is carried out according to the aforementioned welding process. Furthermore, the invention also relates to an actuator housing comprising such a die-cast component.
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