Metal core welding wire for submerged arc welding of A304 and A304L austenitic stainess steel
A technology of austenitic stainless steel and A304, applied in arc welding equipment, metal processing equipment, welding medium, etc., to achieve high current density, stable welding quality, and reduce labor intensity
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[0033] Select several examples of metal cored wires in the present invention to compare the welding effect with the submerged arc welding solid H0Cr21Ni10 wires commonly used in production. The base metals are A304 and A304L, and their chemical composition is shown in Table 1. The submerged arc flux is HJ260, dried at 400°C before welding, and kept warm for 2 hours. Welding grooves and weld samples are selected in accordance with GB / T17854-199 and GB4334.5-90. All embodiments of the present invention are manufactured by "FCWM50 passive drawing type flux-cored welding wire machine" manufactured by Kunming Heavy Machinery Factory. The specific implementation is as follows:
[0034] 1. Select 14×0.5 (width 14mm, thickness 0.5mm) low-carbon steel strip, and first roll it into a U shape. Take the mass percentage as 57%Cr, 28%Ni, 4%Mn, 7.5%Fe, 0.5%Bi 2 o 3 , 500 grams of metal powder with 3% Al-Mg is put into the powder mixer and mixed for 10 minutes, then the mixed powder is a...
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