E-ISSN 2705-3954 | ISSN 0794-4756
 
2026, Vol: 33, Issue: 1
33 / 1Current Issue Online FirstArchiveAims and ScopeAbstracting & IndexingMost Accessed ArticlesMost Downloaded ArticlesMost Cited Articles

Original Research 


SURFACE ROUGHNESS PREDICTION IN MILLING USING OBLIQUE ANGLE WITH MILD STEEL AND HIGH SPEED STEEL (HSS)

Izunna Timothy Okafor, John Osadolor Osarenmwinda, Morakinyo Kehinde Onifade.


Abstract
A metal milling process consists of the tool piece, work piece, the machine center as well as the operator. This research focuses on achieving some response in relation to surface roughness, tool life and machining time, most machine tools fails because of poor surface finish as this pattern plays a great role in achieving the design capacity of the machine tools or elements. Fails can occur due to craters, waviness, flay as well as lay. Many researchers have posited that the entirety of surface roughness cannot be measured with the value of the absolute surface roughness (Ra). The research work will obtain models that can predict above the (Ra) and the results will serve as a guide to machinist whilst updating the machining database. The study developed a near sure-fire surface roughness result when machining mild steel with high speed steel while maximizing the tool life and minimizing the machining time.
The study has discovered a sure fire response surface roughness when applying high speed steel (HSS) as tool piece and mild steel as work piece. Furthermore, Ra, Rz, Rq, Rt, M/Ctime where minimized ate runs 4, while the TL was optimized at values of 0.461, 01.304, 0.463, 1.317, 65.4 seconds and 91126275.2 seconds respectively. The (ANOVA) carried out have evidently indicated that the null hypothesis should be accepted at significance α level of 0.05.

Key words: Cutting in Oblique, Response Surface Roughness, Box-Behnken Process Parameters, Machining time, tool life


 
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How to Cite this Article
Pubmed Style

Okafor IT, Osarenmwinda JO, Onifade MK. SURFACE ROUGHNESS PREDICTION IN MILLING USING OBLIQUE ANGLE WITH MILD STEEL AND HIGH SPEED STEEL (HSS). NJE. 2026; 33(1): 61-68.

Web Style

Okafor IT, Osarenmwinda JO, Onifade MK. SURFACE ROUGHNESS PREDICTION IN MILLING USING OBLIQUE ANGLE WITH MILD STEEL AND HIGH SPEED STEEL (HSS). https://www.njeabu.com.ng/?mno=130124 [Access: June 27, 2026].

AMA (American Medical Association) Style

Okafor IT, Osarenmwinda JO, Onifade MK. SURFACE ROUGHNESS PREDICTION IN MILLING USING OBLIQUE ANGLE WITH MILD STEEL AND HIGH SPEED STEEL (HSS). NJE. 2026; 33(1): 61-68.


Vancouver/ICMJE Style

Okafor IT, Osarenmwinda JO, Onifade MK. SURFACE ROUGHNESS PREDICTION IN MILLING USING OBLIQUE ANGLE WITH MILD STEEL AND HIGH SPEED STEEL (HSS). NJE. (2026), [cited June 27, 2026]; 33(1): 61-68.


Harvard Style

Okafor, I. T., Osarenmwinda, . J. O. & Onifade, . M. K. (2026) SURFACE ROUGHNESS PREDICTION IN MILLING USING OBLIQUE ANGLE WITH MILD STEEL AND HIGH SPEED STEEL (HSS). NJE, 33 (1), 61-68.


Turabian Style

Okafor, Izunna Timothy, John Osadolor Osarenmwinda, and Morakinyo Kehinde Onifade. 2026. SURFACE ROUGHNESS PREDICTION IN MILLING USING OBLIQUE ANGLE WITH MILD STEEL AND HIGH SPEED STEEL (HSS). Nigerian Journal of Engineering, 33 (1), 61-68.


Chicago Style

Okafor, Izunna Timothy, John Osadolor Osarenmwinda, and Morakinyo Kehinde Onifade. "SURFACE ROUGHNESS PREDICTION IN MILLING USING OBLIQUE ANGLE WITH MILD STEEL AND HIGH SPEED STEEL (HSS)." Nigerian Journal of Engineering 33 (2026), 61-68.


MLA (The Modern Language Association) Style

Okafor, Izunna Timothy, John Osadolor Osarenmwinda, and Morakinyo Kehinde Onifade. "SURFACE ROUGHNESS PREDICTION IN MILLING USING OBLIQUE ANGLE WITH MILD STEEL AND HIGH SPEED STEEL (HSS)." Nigerian Journal of Engineering 33.1 (2026), 61-68. Print.


APA (American Psychological Association) Style

Okafor, I. T., Osarenmwinda, . J. O. & Onifade, . M. K. (2026) SURFACE ROUGHNESS PREDICTION IN MILLING USING OBLIQUE ANGLE WITH MILD STEEL AND HIGH SPEED STEEL (HSS). Nigerian Journal of Engineering, 33 (1), 61-68.


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