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Vidisha Joshi, Dr. Pratik Kikani, Dr. G.D. Acharya
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- PG Scholar, Assistant Professor, Emeritus Professor Atmiya University Rajkot,, Atmiya University Rajkot,, Atmiya University Rajkot, Gujarat, Gujarat, Gujarat India, India, India
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Abstract
nThis review delves into the intricacies of M6 cold forged nuts, a pivotal component in many assemblies. These nuts are essential for maintaining structural integrity, yet their production can often lead to defects that compromise their performance. Key issues include material flaws, such as impurities and inconsistencies, dimensional inaccuracies that can affect fit and function, and surface roughness that can impact the nut’s strength and durability. Material flaws can arise from the quality of the raw materials or from the forging process itself, leading to weaknesses in the final product. Dimensional inconsistencies often result from deviations in the manufacturing process, leading to nuts that do not meet precise specifications. Surface roughness, another critical defect, can reduce the fatigue life of the nuts and lead to premature failure under stress. The impact of these defects on assembly performance and safety cannot be overstated. Defective nuts can lead to inadequate load distribution, increased wear, and ultimately, structural failures. This underscores the importance of stringent quality control measures during production. Advanced detection methods, such as ultrasonic testing, X-ray inspection, and surface profiling, play a vital role in identifying defects early in the manufacturing process. Preventive strategies, including precise control of raw material quality and adherence to manufacturing protocols, are crucial in minimizing defects. By understanding these challenges and the corresponding solutions, researchers, engineers, and manufacturers can enhance the quality and reliability of M6 cold forged nuts. Ensuring rigorous quality control and employing advanced detection techniques are essential steps toward achieving defect-free production, ultimately safeguarding the performance and safety of assemblies that rely on these critical components.
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Keywords: Cracks, Defects, Fasteners, Fracture, M6-Nut
n[if 424 equals=”Regular Issue”][This article belongs to Journal of Materials & Metallurgical Engineering(jomme)]
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References
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[2] Dr. S. K. SAHOO ‘Action Plan for Project Profile On “Nuts and Bolts” Under Public Procurement Policy, 2012, O/o the DevelopmentCommissioner (MSME), Ministry of MSME, Govt. of India
[3] Arindam Dutta, Akash Samanta ‘A Noble Approach of Process Automation in Galvanized Nut, Bolt Manufacturing Industry’ May
2012 IAES International Journal of Robotics and Automation (IJRA)
[4] Fine thread industry website
[5] lfirste.cn/news/industry-news/types-and-causes-of- surface- defects-of-fastener-nuts- i.html#:~:text=For%20the%20use%20of%20fastener,%2 C%20cut%20and%20damage%2C%20etc.
[6] Dragoni, E. (1994). Effect of thread pitch and frictional coefficient on the stress concentration in metric nut-bolt connections.
[7] Dragoni, E. (1997). Effect of thread pitch on the fatigue strength of steel bolts. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 211(8), 591- 600.
[8] Thurston, R. C. A. (1951). The fatigue strength of threaded connections. Transactions of the American Society of Mechanical Engineers, 73(8), 1085-1092.
[9] Gausepohl, T., Möhring, R., Pennig, D., & Koebke, J. (2001). Fine thread versus coarse thread: a comparison of the maximum holding
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[10] Kenny, B., & Patterson, E. A. (1989). The distribution of load and stress in the threads of fasteners-a review. Journal of the Mechanical Behavior of Materials, 2(1-2), 87-106.
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[13] M.S. And High Tensile Nuts And Bolts, prepared by Small Industries Service Institute Industrial Estate, Kokar,Ranchi – 834 001 (Jharkhand).
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Journal of Materials & Metallurgical Engineering
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| Volume | 14 | |
| [if 424 equals=”Regular Issue”]Issue[/if 424][if 424 equals=”Special Issue”]Special Issue[/if 424] [if 424 equals=”Conference”][/if 424] | 01 | |
| Received | March 19, 2024 | |
| Accepted | May 27, 2024 | |
| Published | June 15, 2024 |
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