Copper-niobium (Cu-Nb) welding wire for welding titanium-pipeline steel composite plates and preparation method
A pipeline steel and composite plate technology, applied in welding equipment, welding/welding/cutting items, welding media, etc., can solve the problems of titanium-pipeline steel composite plate refractory welding connection, hindering application, etc., and achieve excellent performance and preparation The effect of simple process and high purity
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Embodiment 1
[0033] Step 1, put the niobium powder with a purity of ≥99.95% and a particle size of 100 mesh in a clean and dry vessel, put it in a vacuum furnace, heat it to 150°C, and keep it warm for 1 hour;
[0034] Step 2, put the copper strip on the tape unwinding machine, and roll the U-shaped groove after passing through the copper strip cleaning equipment; then grind the front end of the copper strip on the wire rolling machine, put it into a mold with an aperture of 2.5mm, and then pass The forming machine carries out the jointing of the copper tape to make a pre-drawn tape with a dense interface;
[0035] Step 3, pour the niobium powder dried in step 1 on the feeder, fill it into the pre-drawn belt with U-shaped grooves, control the filling rate of the niobium powder to 10%, and draw it into a welding wire with a diameter of 2.5 mm;
[0036] Step 4, put the welding wire obtained in step 3 on the reducing machine, change the molds with different apertures to reduce the diameter st...
Embodiment 2
[0041] Step 1, put the niobium powder with a purity of ≥99.95% and a particle size of 100 mesh in a clean and dry container, put it in a vacuum furnace, heat it to 150°C, and keep it warm for 1 hour;
[0042] Step 2, put the copper strip on the tape unloading machine, and roll the U-shaped groove after passing through the copper strip cleaning equipment; then grind the front end of the copper strip on the wire rolling machine, put it into a mold with an aperture of 2.5mm, and then pass The forming machine carries out the jointing of the copper tape to make a pre-drawn tape with a dense interface;
[0043] Step 3, pour the niobium powder dried in step 1 into the feeder, fill it into the pre-drawn belt with U-shaped grooves, control the filling rate of the niobium powder to 13%, and draw it into a welding wire with a diameter of 2.5 mm;
[0044] Step 4, put the welding wire obtained in step 3 on the reducing machine, replace the molds with different apertures and draw the diamet...
Embodiment 3
[0048] Step 1, put the niobium powder with a purity of ≥99.95% and a particle size of 100 mesh in a clean and dry vessel, put it in a vacuum furnace, heat it to 150°C, and keep it warm for 1 hour;
[0049] Step 2, put the copper strip on the tape unwinding machine, and roll the U-shaped groove after passing through the copper strip cleaning equipment; then grind the front end of the copper strip on the wire rolling machine, put it into a mold with an aperture of 2.5mm, and then pass The forming machine carries out the jointing of the copper tape to make a pre-drawn tape with a dense interface;
[0050] Step 3, pour the niobium powder dried in step 1 on the feeder, fill it into the pre-drawn belt with U-shaped grooves, control the filling rate of the niobium powder to 15%, and draw it into a welding wire with a diameter of 2.5 mm;
[0051] Step 4, put the welding wire obtained in step 3 on the reducing machine, change the molds with different apertures to reduce the diameter st...
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