Diffusion welding connecting method adopting Cu foil and Ti foil as composite interlayer
A technology of composite intermediate layer and connection method, applied in welding equipment, welding/welding/cutting items, non-electric welding equipment, etc., can solve the problems of limited research reports, high welding temperature and holding time, damage, etc., and reduce welding specifications. requirements, reducing the tendency to form, the effect of a good connection
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Embodiment 1
[0031] Embodiment one, using copper foil and titanium foil as the composite intermediate layer for nickel-based superalloy and Ti 3 Diffusion welding of Al-based alloys, the welding process is as follows:
[0032] Step 1. Using wire cutting to cut nickel-based superalloy and Ti 3 The Al-based alloy is processed into the required size, and the surface to be welded of the base metal to be welded is polished with sandpaper, and then polished to obtain the base metal to be welded;
[0033] Step 2, using HNO with a volume ratio of 1:9 3 、H 2 O solution was used to remove the oxide film on the copper foil with a thickness of 30 μm, and the corrosion time was 30 s. 3 、H 2 O solution was used to remove the oxide film on the titanium foil with a thickness of 40 μm, and the corrosion time was 50 s to obtain the intermediate layer for diffusion welding;
[0034] Step 3, put the processed base metal, copper foil and Ti foil into acetone for ultrasonic cleaning for 10 minutes;
[003...
Embodiment 2
[0038] Embodiment two, use copper foil and titanium foil as composite intermediate layer to Ni-base superalloy and Ti 3 Diffusion welding of Al-based alloys, the welding process is as follows:
[0039] Step 1. Using wire cutting to cut nickel-based superalloy and Ti 3 The Al-based alloy is processed into the required size, and the surface to be welded of the base metal to be welded is polished with sandpaper, and then polished to obtain the base metal to be welded;
[0040] Step 2, using HNO with a volume ratio of 1:9 3 、H 2 O solution was used to remove the oxide film on the copper foil with a thickness of 20 μm, and the corrosion time was 20 s. 3 、H 2 O solution was used to remove the oxide film on the titanium foil with a thickness of 30 μm, and the corrosion time was 30 s to obtain the intermediate layer for diffusion welding;
[0041] Step 3, put the processed base metal, copper foil and Ti foil into acetone for ultrasonic cleaning for 10 minutes;
[0042] Step 4: P...
Embodiment 3
[0044] Embodiment three, using copper foil and titanium foil as the composite intermediate layer for nickel-based superalloy and Ti 2 Diffusion welding of AlNb alloy, the welding process is as follows:
[0045] Step 1. Using wire cutting to cut nickel-based superalloy and Ti 2 The AlNb alloy is processed into the required size, the surface to be welded of the base metal to be welded is polished with sandpaper, and then polished to obtain the base metal to be welded;
[0046] Step 2, using HNO with a volume ratio of 1:9 3 、H 2 O solution was used to remove the oxide film on the copper foil with a thickness of 20 μm, and the corrosion time was 20 s. 3 、H 2 O solution was used to remove the oxide film on the titanium foil with a thickness of 30 μm, and the corrosion time was 30 s to obtain the intermediate layer for diffusion welding;
[0047] Step 3, put the processed base metal, copper foil and Ti foil into acetone for ultrasonic cleaning for 10 minutes;
[0048] Step 4: ...
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