KARAKTERISASI SIFAT FISIS DAN MEKANIS SAMBUNGAN LAS SMAW BAJA A-287 SEBELUM DAN SESUDAH PWHT
The aimed of this research are to compare physical dan mechanical properties between raw materialsÂ andÂ Shielded Metal Arc Steel Weld Metals and to find optimum temperature of annealing. A series of Shielded Metal Arc Steel Weld Metals were made on 3 mm of Thick A 287 carbon steels. The electrode used was E 6013, Ã˜ 3.2 mm. Annealing was performed with three differentÂ temperature were 300Â°C,Â 600Â°C, dan 850Â°C. The results show that the tensile strength of raw material had the same value with weld metals and weld metals with annealing 300Â°C and 600Â°C, but weld metals with annealing 850Â°C had lower tensile strength. The hardness experiments was used Vickers Micro Hardness.The Hardness number of weld metals was higher than HAZ and raw materials. Weld Metals with annealing 300Â°C had the highest value. The elongation of weld metals and weld metals with annealing 300Â°C and 600Â°C had lower number than raw materials, but weld metals with annealing 850Â°C had almost the same value of elongation with raw materials. The optimum annealing temperature was 850Â°C because weld metals with annealing 850Â°C had high elongation and low tensile strength.
Keywords SMAW, Annealing, Vickers Micro Hardness, Tensile Strength, Elongation.
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.