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Ade Irawan
Universitas Harapan Medan
Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Mechanical Engineering

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ANALISA PENGUJIAN KEKERASAN MATERIAL BAJA KARBONRENDAH DAN BESI MENGGUNAKAN METODE UJI BRINNEL Junaidi Junaidi; Ade Irawan
JITEKH Vol 7 No 2 (2019): September 2019
Publisher : Universitas Harapan Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35447/jitekh.v7i2.725

Abstract

Steel is iron with a carbon content of less than 2%. Steel can be formed into various shapes according to needs. Broadly speaking there are 2 types of steel, namely carbon steel and alloy steel. Carbon steel is divided into low carbon steel, medium carbon steel and high carbon steel. The classification of steel is significantly influenced by composition, structure and use. ST 37 iron is classified as low carbon steel, which has less carbon content according to specifications of 0.16%. This steel is also often used for machine constructions that rub against each other such as gears, shafts. Steel has mechanical properties, one of which is hardness. To determine the hardness value, the brinnel test method, the Vickers method and the Rockwell method are used. In this study, the brinnel method will be used, where the materials to be tested are low carbon steel and iron. This test can see the material hardness value of low carbon steel and iron so that it can be applied according to its function.
ANALISA KEGAGALAN PIPA ASTM A179 PADA RUANG BAKAR BOILER Fadly Ahmad Kurniawan Nasution; Ade Irawan
JITEKH Vol 8 No 2 (2020): September 2020
Publisher : Universitas Harapan Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35447/jitekh.v8i2.734

Abstract

A steam power plant or better known as a boiler or steam boiler, the steam boiler itself has the main components, namely the pipe used to circulate water, the pipe itself is made of metal material, the operation of the boiler, the pipe in the boiler combustion chamber experiences a change in temperature which resulted in a deformation that resulted in a change in the mechanical properties of the pipe material. This chapter will explain the steps taken in carrying out several tests with the aim of knowing the hardness of the boiler pipe material. The tests carried out are testing the microstructure, and the hardness value, which will be explained in the flow chart in the sub-chapter below. The hardness decreased, at a load of 1500 kgf. The hardness value decreased not too significantly, from 132.1667 to 91.81667 BHN. That the decrease in hardness is only 0.43% Obtained the standard average hardness value in the boiler with each brinell test, amounting to 132.1667 BHN Obtained the average hardness value which is affected by the temperature of the boiler combustion chamber with each brinell test, amounting to 91.71667 HRB, Based on the value of the hardness test results compared to that after heating experienced a decrease in hardness in the brinell test by 0.43%.
Co-Authors Fadly Ahmad Kurniawan Nasution JUNAIDI