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Ahmad Bakhori
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Dentistry Engineering Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Mechanical Engineering Medicine & Pharmacology Nursing Public Health Veterinary

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Analysis Of The Effect Of Carbide Cutting Angle On The Surface Roughness Of Aisi 4337 Steel In Turning Axle Rail Shafts Without Cutting Fluid Suhardi Napid; Ahmad Bakhori
International Journal of Health Engineering and Technology Vol. 3 No. 5 (2025): IJHET JANUARY 2025
Publisher : CV. AFDIFAL MAJU BERKAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55227/ijhet.v3i5.252

Abstract

Varying cutting angles are applied to understand the relationship between cutting angles and machining result characteristics, such as surface roughness (Ra). Surface roughness as a dependent variable is influenced by machining parameters, namely depth of feed. Cutting angle, cutting speed and feed speed as independent variables. The aim of the research activity is to analyze the effect of variations in the cutting angle of carbide tools and identify the optimum cutting angle on the surface quality of the axle rail shaft from AISI 4337 steel processed using the dry turning method. The research was carried out experimentally, which had 9 specimens as test material to obtain surface roughness values ​​with variations in cutting angles using a CNC lathe without cutting fluid and a surface test tool. Test data is provided with machine spindle rotation speeds, namely 1200 rpm, 1400 rpm and 1600 rpm. Variations in cutting angles of 25o, 55o, 85o and feeds of 0.1 mm/r, 0.15 mm/r, 0.2 mm/r and a constant cutting depth of 1 mm are used for the dry turning process which is commonly used in industry to reduce the environmental impact . The average surface roughness (Ra-avg) values ​​of 3.05 μm, 2.35 μm, 1.64 μm obtained as a function of cutting angle are part of the optimum cutting conditions on HP9. From the analysis, it was found that the most optimum cutting angle (Kr) was an angle of 85o with an average surface roughness value (Ra-avg) of 1.64 μm as shown in figure 4.3. The results show that larger cutting angles tend to produce surfaces with lower roughness, while smaller angles can increase the tool wear rate. Factors such as cutting speed, depth of cut, and feed rate also influence the results significantly. This research provides important insights for the optimization of machining processes in industrial applications.
The Effect Of Variation Of Welding Camp On The Strength Of The Arc Joint Welding Sheltered Metal Arc Welding (SMAW) On Steel St 37 Ahmad Bakhori; Muksin R Harahap; Suhardi Napid
International Journal of Health Engineering and Technology Vol. 2 No. 4 (2023): IJHET NOVEMBER 2023
Publisher : CV. AFDIFAL MAJU BERKAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55227/ijhet.v2i4.174

Abstract

In this study will discuss the extent to which the strength of the st37 steel or low carbon steel arch test after welding Shielded Metal Arc Welding (SMAW). ST37 steel or low carbon steel is formed into specimens with three models of kampuh, namely Double V kampuh 60°, single V kampuh 60° and single slope kampuh 30° as many as 9 (nine) specimens. Furthermore, welding with a current of 90 A and electrode e 6013 then performed a curved test to determine its mechanical properties through the test Universal Testing Machine (UTM) type Tarno Test UPH 100 kN at the State Polytechnic Laboratory Medan. From the data obtained after the analysis can be concluded that the specimen of Type V double camber has the highest value of curved strength is the value of the average curved strength of 1063.96 MPa, of Type V single and single slope camber. This is possible because there are two sides of welding and a large angle of 60° which makes the Weld strong. While the type of single slope welding camp has the lowest arch strength value due to the small welding angle of 30° which makes the welding process difficult and the electrode is not completely filled at the root of the Weld.
Effect of Feed Depth on the ProcessMilling Against Surface Roughness Steel 4140 Carbide Endmill Applications Suhardi Napid; Ahmad Bakhori
International Journal of Health Engineering and Technology Vol. 3 No. 1 (2024): IJHET May 2024
Publisher : CV. AFDIFAL MAJU BERKAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55227/ijhet.v3i1.210

Abstract

In the metal cutting industry today, milling process applications are still carried out using cutting fluids. One of the criteria for determining machining quality is surface roughness. Surface roughness as a dependent variable is influenced by machining parameters, namely feed depth, cutting speed and feed speed as independent variables. Research activities with the aim of obtaining machined surface roughness of 4140 low alloy steel workpieces due to spindle rotation speed and feed depth using carbide endmill cutting tools. Research activities were carried out with 9 specimens for the vertical milling process using cutting fluid through variations in machine spindle rotation of 1200 rpm, 1400 rpm and 1600 rpm and feed depths of 0.5 mm, 0.75 mm, 1 mm. Data processing was carried out using experimental methods to obtain surface roughness data.
Co-Authors Muksin R Harahap Suhardi Napid