KARAKTERISASI SIFAT FISIS DAN MEKANIS SAMBUNGAN LAS SMAW BAJA A-287 SEBELUM DAN SESUDAH PWHT
ABSTRACT: The aimed of this
research are to compare physical dan mechanical properties between raw
materials and 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, Ø 3.2 mm. Annealing was performed with three different temperature were 300°C, 600°C, dan 850°C. The results show that the
tensile strength of raw material had the same value with weld metals and weld
metals with annealing 300°C and 600°C, but weld metals with annealing 850°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 300°C had the highest value. The elongation of
weld metals and weld metals with annealing 300°C and 600°C had lower number
than raw materials, but weld metals with annealing 850°C had almost the same
value of elongation with raw materials. The optimum annealing temperature was
850°C because weld metals with annealing 850°C had high elongation and low
tensile strength.
Penulis: Yustiasih
Purwaningrum
Kode Jurnal: jptindustridd060006
