Preparation method of crust breaking hammerhead for aluminum electrolysis
A technology of shelling hammer and aluminum electrolysis, applied in the field of aluminum electrolysis, can solve the problems of poor wear resistance and corrosion resistance of the hammer, can not effectively improve the service life of the shelling hammer, and reduce labor intensity and impurity content. , the effect of excellent welding performance
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Embodiment 1
[0024] Firstly, sand blast the surface of the Q235 steel hammer to remove the scale and other dirt on the surface of the hammer to obtain a clean surface, increase the roughness of the surface, and improve the surface activity. Then adopt the method of plasma surfacing welding to carry out surfacing welding on the surface of Q235 steel hammer head, wherein the composition of surfacing welding powder is Ni4%, Cr17%, B0.3%, Si0.2%, C0.15%, WC14%, and the rest is Fe and unavoidable impurities, the particle size of the powder material is 45μm-150μm. The surfacing welding current is controlled to 130A, the width of each cladding layer is 15mm, the cladding height from the end face upward is 150mm, the thickness of the circumferential surface is 1.8mm, and the thickness of the bottom surface is 3.5mm. Finally, heat treatment is carried out. The process is: 550℃×1.5h, furnace cooling, to ensure the uniformity of the coating structure and eliminate the surfacing stress of the coating....
Embodiment 2
[0026] Firstly, sand blast the surface of the Q235 steel hammer to remove the scale and other dirt on the surface of the hammer to obtain a clean surface, increase the roughness of the surface, and improve the surface activity. Then use the method of plasma surfacing welding to surfacing welding on the surface of Q235 steel hammer, wherein the composition of surfacing powder is Ni9%, Cr20%, B1.2%, Si0.8%, C0.15%, WC20%, Mn1% , the rest is Fe and unavoidable impurities, the particle size of the powder material is 45μm-150μm. The surfacing welding current is controlled to 140A, the width of each cladding layer is 15mm, the cladding height from the end face upward is 200mm, the thickness of the circumferential surface is 2mm, and the thickness of the bottom surface is 3.5mm. Finally, heat treatment is carried out. The process is: 600℃×1.5h, furnace cooling, to ensure the uniformity of the coating structure and eliminate the surfacing stress of the coating. The service life of th...
Embodiment 3
[0028]Firstly, sand blast the surface of the Q235 steel hammer to remove the scale and other dirt on the surface of the hammer to obtain a clean surface, increase the roughness of the surface, and improve the surface activity. Then use the method of plasma surfacing welding to surfacing welding on the surface of Q235 steel hammerhead, wherein the composition of surfacing welding powder is Ni5%, Cr19%, B1.3%, Si1.2%, C0.4%, WC22%, Hf0. 9%, the rest is Fe and unavoidable impurities, the particle size of the powder material is 45μm-150μm. The surfacing welding current is controlled to 144A, the width of each cladding layer is 12mm, the cladding height from the end surface to the top is 90mm, the thickness of the circumferential surface is 1.8mm, and the thickness of the bottom surface is 2.5mm. Finally, heat treatment is carried out. The process is: 580°C×2h, furnace cooling, to ensure the uniformity of the coating structure and eliminate the surfacing stress of the coating. The...
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Abstract
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