Preparation method for car robot automatic welding station resistance welding electrode
An automatic welder and robot technology, applied in the direction of electrode characteristics, welding equipment, metal processing equipment, etc., to achieve high resistance to softening temperature, excellent performance, and increase the yield of finished products
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Embodiment 1
[0021] The weight percentage of Al is 0.5-1.0% in the ratio, and Al is formed after internal oxidation 2 o 3 The weight percentage is 0.8-2.2%, and the balance is Cu; the processing process adopted is: water atomization powder making → powder drying → screening → oxygen source preparation → powder mixing → rubber sleeve → cold isostatic pressing → internal Oxidation, reduction, sintering integrated heat treatment → oxygen-free copper sheath sealing → powder ingot heating → hot extrusion → sawing → straightening → reducing forging → packaging and storage.
Embodiment 2
[0023] Water atomization pulverization: use 100kg intermediate frequency melting furnace for smelting, first add high-purity oxygen-free electric copper to the intermediate frequency furnace for smelting for 40-70 minutes, cover the melting process with charcoal; then add copper-13% phosphorus master alloy for deoxidation of 0.5- After 3 minutes, add copper-30% aluminum master alloy and melt for 3-8 minutes. The weight content of Al in the copper-30% aluminum master alloy is 0.5-1.0%. 7-9Mpa high-pressure water is used to atomize powder; powder drying: after the powder is dehydrated by a spin dryer, the powder is loaded into a stainless steel boat and dried in a drying box. The temperature is set at 290°C-310°C, and the drying time is generally For 2 to 3 hours, the powder should be prevented from turning black; sieving: use 40 mesh and 100 mesh two-layer sieve to sieve to obtain raw powder less than 40 mesh and less than 100 mesh raw powder, and store the two raw powders separ...
Embodiment 3
[0025] Oxygen source preparation: put the raw powder less than 100 mesh into the resistance furnace for oxidation, the oxidation temperature is 250-500°C, the time is 40-80 hours, after the oxidation is completed, pass through a 100-mesh sieve to obtain a black oxygen source less than 100 mesh. Send it into a well-type furnace for decomposition. The decomposition temperature is 600℃~850℃ in a nitrogen atmosphere, making it turn into rose-red cuprous oxide for later use.
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