scholarly journals APLIKASI NON DESTRUCTIVE TEST PENETRANT TESTING (NDT-PT) UNTUK ANALISIS HASIL PENGELASAN SMAW 3G BUTT JOINT

2017 ◽  
Vol 3 (2) ◽  
Author(s):  
Tito Endramawan ◽  
Emin Haris ◽  
Felix Dionisius ◽  
Yuliana Prinka
Keyword(s):  
Mild Steel ◽  
Welding Process ◽  
Butt Joint ◽  
Test Results ◽  
Acceptance Criteria ◽  
Destructive Test ◽  
Non Destructive ◽  
Penetrant Testing

The purpose of the research are determine acceptance criteria the specimen based on ASME standard. The research used mild steel materials with hardness 220 HVN with sized 30 cm x 20 cm x 1.2 cm then  SMAW welding process position of 3G buttjoint with rooting electrode LB 52U diameter 2.6 mm used current 70 Amper and voltage 380 volt, for Filler used LB 5218 electrode 3.2 mm with current of 80 Amper and voltage of 380 volts. The welding process influenced by many factor which cause failure. The method for inspect result of weld used Non Destructive Test Penetrant Testing (NDT PT) and used ASME standard for acceptance criteria. The test results showed the discontinuity of porosity on the surface of the welded product in specimen 1 is the largest rounded 5 mm at 233 mm distance so that based on the acceptance criteria of AWS standard, the welding result is accepted and the specimen 2 there is discontinuity at 233 mm with the size of 8 mm so that Otherwise rejected. This rejected result can be improved by gouging the discontinuity and then welded.

scholarly journals The Defect Analysis of Carbonsteel Pipe Welding Connections Using Non-Destructive Testing with the Penetrant Test Method

2020 ◽  
Vol 5 (1) ◽  
pp. 38-47
Author(s):  
Nur Ichsan Sumardani ◽  
Ngainun Ibnu Setiawan ◽  
Bebeh Wahid Nuryadin ◽  
Dadan Sumardani
Keyword(s):  
Surface Defects ◽  
Welding Process ◽  
Test Method ◽  
Test Results ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Pipe Welding ◽  
Materials Used ◽  
Non Destructive ◽  
Penetrant Testing

In a welding process carried out on metallic materials is sometimes found defects in the material being tested, it is caused by many factors, such as the lack of good materials used and the lack of perfection of the welding process. At testing, it aims to know the surface defects in carbonsteel pipes to know the defects arising after welding. This test is performed with non-destructive tests (NDT) using Dye Penetrant testing method. This test uses 3 types of liquids, including; Cleaner, Penetrant, and developer. The results of these tests will then be observed whether defects occur after welding and what factors affect it. From the test, results there are known 10 locations defects on the surface of the carbonsteel pipe welding with a type of rounded indication of defects that are then followed up by re-welding on indications of such defects.

ANALISIS PENGARUH JARAK KAMPUH HASIL PENGELASAN BAJA SS400 TERHADAP SIFAT MEKANIK MATERIAL MENGGUNAKAN METODE GMAW

2020 ◽  
Vol 8 (2) ◽  
pp. 57-66
Author(s):  
Novi Laura Indrayani ◽  
Herry Oktadinata ◽  
Ito Suteja
Keyword(s):  
Hardness Test ◽  
Butt Joint ◽  
Test Results ◽  
Destructive Test ◽  
Microstructure Observation ◽  
A Value ◽  
Welding Defects ◽  
Protective Gas ◽  
Non Destructive

Welding techniques have been used extensively in the construction field because welding techniques are a simpler method in the process of connecting steel than using bolts or rivets. Factors that influence the quality of welding results include distance of the seam. The seam distance can affect the increase in heat input value because the wider the seam distance the more filler metal will be used. The purpose of this study was to determine how the effect of variations in the distance of the seam to the mechanical properties of SS400 steel welding material using the GMAW method. SS400 steel welding welding position 2G with variations in the root gap distance of 0 mm, 2 mm and 4 mm using the GMAW method with a type of protective gas 82% Ar + 18% CO2 and ESAB ER70S-6 type welding wire. Single v butt joint type with a seam angle of 60o and 12 mm thick material. In this study several tests were conducted including distortion testing, non-destructive test, tensile, chemical composition, hardness and microstructure observation. The highest distortion test results obtained at a root gap of 4 mm seam, non-destructive test results showed no welding defects in the upper surface of the weld, the optimal tensile testing results were obtained on a sample root gap of 2 mm with a tensile strength value of 413 MPa and fractures that occurred in the base area metal. The highest hardness test results were obtained at a sample root gap  of 0 mm ap with a value of 235 HV and the lowest hardness obtained at a root gap of 4 mm with a value of 209 HV.

scholarly journals Interlayer Effect on Connection of Mild Steel ST37 and Stainless Steel 201 on Rotary Friction Welding

2021 ◽  
Vol 65 (1) ◽  
pp. 23-30
Author(s):  
Yohanes Yohanes ◽  
◽  
Muhammad Heriansyah ◽  
Keyword(s):  
Stainless Steel ◽  
Mild Steel ◽  
Tensile Test ◽  
Friction Welding ◽  
Solid Phase ◽  
Welding Process ◽  
Hardness Test ◽  
Welding Parameters ◽  
Test Results ◽  
Rotary Friction Welding

Friction welding is a type of solid state welding where the welding process is carried out in a solid phase to combine various types of ferrous and non-ferrous metals that cannot be welded by the fusion welding method but for welding different metals the welding results are less than optimal due to cracks on the surface of the welding results and differences in mechanical properties that cause the welding result to be brittle, therefore an interlayer is used. In this study, observations were made on the process and results of the joint friction welding using dissimilar metal material between mild steel ST37 and stainless steel 201 with copper interlayer. The results of the test will be a tensile test to see the maximum tensile strength and a hardness test to see the hardness value of the interlayer variation of 0.3 mm, 0.5 mm, 1 mm and without an interlayer. The conclusions obtained are: (1) The effect of the addition of an interlayer on the rotary friction welding process includes the friction phase, the forging phase and the results of welding parameters in the form of motor power, motor angular speed, the change in specimen length is greater without using an interlayer compared to using an interlayer while the duration of welding time is greater using an interlayer than without using an interlayer. (2) The maximum tensile test results were obtained at the 1 mm interlayer at 482.43 MPa and the maximum hardness test results obtained at the 1 mm interlayer were 321.34 VHN.

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