Hardness and microstructure investigation of steel rod ST 42 coated by chrome steel using wire arc spray coating
Journal Title: Journal of Achievements in Materials and Manufacturing Engineering - Year 2018, Vol 2, Issue 90
Abstract
Purpose: This research aimed to examine the hardness, surface roughness and microstucture in the Steel Rod ST 42 coated by chrome steel using wire arc spray coating with variations in spraying current of 140, 155, 170 and 180 Ampere. Design/methodology/approach: There was 12 specimens consisting of 3 specimens for each variation of the electric current coating. The specimens were cut to 30 mm in length and 27 mm in diameter; as many as 4 x 3 pieces, each specimen was cut to a size of 30 mm and put on a lathe to be drilled 1 mm deep. The hardness testing employed the Brinell hardness test method. The hardness testing process was followed by microstructure observation and SEM-EDAX testing. Findings: The highest hardness was 110.77 HRB by coated at 155 A and it contained many reinforcing inclusions and larger Cr. The lowest current of 140 A had many porosity holes and partially-melted particles, causing Cr grains did not attach perfectly. The current with 170 A had few inclusions and hence a decrease in hardness and at 180 A consisted of a low carbon content and evenly distributed inclusions and Cr and relatively large grain size, and thus the hardness rose. Research limitations/implications: The material of steel rod ST 42 coated by chrome steel. Practical implications: The variation of current should be prepared wisely in term because it will effect the hardness, surface roughness and microstucture. This research can be improved by varying the voltage, gas pressure, particle velocity, particle temperature, and molten wire width. Originality/value: Simple route of making steel rod ST 42 coated by chrome steel using wire arc spray coating and also the investigation of hardness, surface roughness and microstucture in steel rod ST 42 coated by chrome as the result.<br/><br/>
Authors and Affiliations
P. Puspitasari, A. Yudhistantra, A. S. Haryono, J. W. Dika, M. Achyarsyah, S. M. S. N. Shikh Zahari
Keywords
Related Articles
- EP ID EP431927
- DOI 10.5604/01.3001.0012.8385
- Views 127
- Downloads 0
Estimation of the chemical specific surface area of catalytic nanoparticles by TEM images analysis
Purpose: The purpose of this article is the development of quantitative methods for assessing the quality of nanocomposite materials used in fuel cells. Design/methodology/approach: latinum is the most commonly used cata...
Control of the weld quality using welding parameters in a robotic welding process
Purpose: Since the welding automations have widely been required for industries and engineering, the development of the predicted model has become more important for the increased demands for the automatic welding system...
Synthesis and characterization of double phase metal nickelates/borates
Purpose: Purpose of this research is obtaining of metal nickelates and borates as doublephase. These types of compounds display extraordinary structural diversity caused by boronand nickel which applicable in flame retar...
Comparison of surface morphology and structure of Al2O3 thin films deposited by sol-gel and ALD methods
Purpose: of this research was examination Al2O3 thin film obtained with two different method, by sol-gel and ALD, and comparison the surface morphology and structure of deposited thin films. The films deposited on the mo...
The significance of the nanostructural components on the properties of the nanoengineering materials
Purpose: In the paper, the own original achievements and a mature view of the current development of advanced nanotechnology materials are presented. Design/methodology/approach: The paper should be treated as an auto-re...