A kind of preparation method of surfacing welding rod
A technology for surfacing electrodes and electrode cores, applied in welding equipment, welding equipment, arc welding equipment, etc., can solve the problems of poor wear resistance, low welding seam strength, difficult to clean, etc., to improve the working environment and reduce welding fumes. , the effect of promoting melting
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example 1
[0021] First, weigh 300g of diatomite, pour it into a ball mill, add zirconia ball milling beads according to the mass ratio of the ball to material at 8:1, pass through an 80-mesh sieve after ball milling for 2 hours, and then pour the diatomite sieved through the ball mill into a container In a fermenter of 2L biogas slurry, at a temperature of 35°C and a rotation speed of 200r / min, ferment for 5 days at a constant temperature, then filter to obtain a diatomite filter residue, and place the obtained diatomite filter residue in an oven. Dry to constant weight at 105°C to obtain dry filter residue, then add 0.6g of nano-iron powder and 200g of dry filter residue to the crucible, then transfer the crucible to a carbonization furnace, and feed argon into the furnace at a rate of 60mL / min Then, the temperature was programmed to rise to 700°C at a rate of 8°C / min, heat-preserved and carbonized for 45 minutes, the introduction of argon gas was stopped, and hydrogen gas was introduce...
example 2
[0024]First weigh 400g of diatomite, pour it into a ball mill, add zirconia ball milling beads according to the mass ratio of the ball to material at 9:1, pass through a 100-mesh sieve after ball milling for 3 hours, and then pour the diatomite sifted through the ball mill into a container In a fermenter of 3L biogas slurry, at a temperature of 36°C and a rotation speed of 250r / min, ferment in a constant temperature and airtight manner for 6 days, filter to obtain a diatomite filter residue, and place the obtained diatomite filter residue in an oven. Dry to constant weight at 108°C to obtain dry filter residue, then add 0.7g of nano-iron powder and 250g of dry filter residue to the crucible, then transfer the crucible to a carbonization furnace, and feed argon into the furnace at a rate of 70mL / min The temperature was programmed to rise to 750°C at a rate of 9°C / min, and the carbonization was carried out for 53 minutes. The argon was stopped, and carbon monoxide was introduced ...
example 3
[0027] First weigh 500g of diatomite, pour it into a ball mill, add zirconia ball milling beads according to the mass ratio of the ball to material at 10:1, pass through a 120-mesh sieve after ball milling for 4 hours, and then pour the diatomite sifted through the ball mill into a container In a 4L biogas slurry fermenter, at a temperature of 37°C and a rotational speed of 300r / min, ferment for 7 days at a constant temperature, then filter to obtain a diatomite filter residue, and place the obtained diatomite filter residue in an oven. Dry to constant weight at 110°C to obtain dry filter residue, then add 0.8g of nano-iron powder and 300g of dry filter residue to the crucible, then transfer the crucible to a carbonization furnace, and feed argon into the furnace at a rate of 80mL / min The temperature was programmed to rise to 800°C at a rate of 10°C / min, and kept for carbonization for 60 minutes. The argon was stopped, and methane was introduced into the furnace at a rate of 40...
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