Welding process based on two types of steel, together with many industry types, but when considered in the structural welding. If the gas metal arc welding applications in structural welding may be appropriate for less because of gas metal arc welding machine series that covers welding equipment include several pieces. In this research aims to study the impact of the primer binding result in microstructure and properties of joints of carbon steel AISI 1015 with AISI 304 stainless steel welding with arc welding flux sneaker khluat. 75 mm, length 150 mm 15 number of pieces under the terms of the connection wire connection wire and wire butt welding using E 308 307 E primer, 309 E, 312 E power in 80, 90, 100, 110, 120 ampere, when a finished piece of work has led to the impact test. Testing the hardness and metallurgy structure test study results found a piece of a welding wire 309 E primer, with a stream of 100 Ampere, The study of the structure elements are comma found that when increasing power on the seam of the dilution. But when adding stream too high will cause the value to lower energy absorption.
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