Aluminum/steel dissimilar material friction-stir lap joint method assisted by rivet type mechanical connection
A mechanical connection and friction stir technology, which is applied in welding equipment, non-electric welding equipment, manufacturing tools, etc., can solve the problems of small bearing area of joints, weakening the bearing capacity of aluminum/steel dissimilar joints, etc., and achieve the effect of reducing wear
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specific Embodiment approach 1
[0017] Specific implementation mode one: combine Figure 1 ~ Figure 3 Describe this implementation mode, this implementation mode is realized through the following steps:
[0018] Step 1. Determine the lap width B of the joint between the steel plate 1 and the aluminum plate 2, determine the longitudinal centerline N-N on the lap width B of the steel plate 1, and drill a row of pre-drilled holes 1-1 along the longitudinal centerline N-N, each pre-drilled The diameter d of the hole 1-1 is 1 mm to 5 mm, the distance between two adjacent pre-drilled holes 1-1 is (d+xd) mm, x is the distance coefficient, and the value of x is 0 to 2;
[0019] Step 2. Clean the contact surface of the steel plate 1 and the aluminum plate 2 and the surrounding area of 20 mm to 30 mm, and remove the oxides on the surface of the steel plate 1 and the aluminum plate 2;
[0020] Step 3: Wipe the surfaces of the steel plate 1 and the aluminum plate 2 with an organic solvent or cleaning agent to remove ...
specific Embodiment approach 2
[0022] Specific implementation mode two: combination figure 1 To illustrate this embodiment, in this embodiment, in step 1, the steel plate 1 is ordinary low-carbon steel or low-alloy steel, and the aluminum plate 2 is pure aluminum or aluminum alloy. Other steps are the same as in the first embodiment.
specific Embodiment approach 3
[0023] Specific implementation mode three: combination figure 2 This embodiment is described. In this embodiment, the diameter d of each pre-drilled hole 1-1 in step 1 is 2.5 mm. Other steps are the same as in the first embodiment.
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