Microalloying improves the quality of mg-fe spot welding of dissimilar metals
A technology of heterogeneous metals and microalloying, applied in metal processing equipment, welding equipment, manufacturing tools, etc., can solve problems such as inability to obtain effects
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[0018] A microalloying process for improving the quality of heterogeneous metal Mg-Fe spot welding is carried out in the following steps:
[0019] Step 1. Prepare the alloy paste
[0020] Weigh the Mn powder and the Al powder according to the mass ratio of 1-5:5-9, mix the Mn powder and the Al powder evenly in proportion, add a volatile solvent to prepare the alloy paste; the volatile solvent is acetone ;
[0021] Step 2. Pretreatment of materials to be welded
[0022] Stir the alloy slurry, and when the viscosity is 0.65-0.7Pa·s, scrape the alloy slurry on the lap joint between the Mg material and the Fe material to be welded, and form an alloy between the joints of the Mg material and the Fe material. pulp layer;
[0023] In described step 2, the surface of the Mg material and the Fe material at the lap joint place is scraped and coated with alloy slurry group respectively, the thickness of the alloy slurry group layer on the surface of the Mg material is 2 times of the t...
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