Friction spark generation and incendivity of several metal alloys

Chang, Li; Yuan, Yixiao; Amyotte, Paul; Xiao, Mingxuan; Zheng, Wenxu; Bu, Yajie; Yuan, Chunmiao; Li, Gang

doi:10.1016/j.jlp.2021.104406

Cited by 7 publications

(2 citation statements)

References 21 publications

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“…The relationship between the physical and chemical properties of friction sparks and their generation was evaluated. For 6061 aluminum alloy, H62 bronze alloy, AMAK3 zinc alloy, and AZ31B magnesium alloy, no bright friction sparks were observed at the maximum friction velocity of 12 m/s and the maximum surface pressure of 3.75 N/mm 2 , due to low hardness, high thermal conductivity, low melting point, and lack of carbon [ 50 ].…”

Section: Classification Of Intelligent Grinding Methodsmentioning

confidence: 99%

Analysis of Current Situation, Demand and Development Trend of Casting Grinding Technology

Liang

Qiao

2022

Micromachines

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Although grinding is essential in the production of castings, the casting grinding process in manufacturing is complicated and there are many difficulties, such as the large amount of noise in the grinding environment, non-structural casting entities, and the inclination in the overall shape–time variation. Even in the face of complex technology and a variety of difficulties, modern casting grinding technology still demands large-batch production, low cost, fast response, thin brittleness, high precision, etc. The grinding process has a long history. This paper focus on its development from a human-operated, mechanical job, to an automatic grinding task based on compliant control theory. However, the methods mentioned above can no longer satisfy the current production need. In recent years, researchers have proposed intelligent grinding methods to meet the needs of modern casting production, and provided various strategies and alternatives to the challenges of machining accuracy, machining efficiency, and surface consistency. The research direction of casting polishing has mainly focused on online robot detection, material removal prediction, constant grinding contact force control, and high-precision matching. Although applications for online detection and constant grinding contact force control exist in industry, there are challenges in material removal prediction and three-dimensional high-precision matching. This paper also compares and analyzes the advantages and disadvantages of different grinding methods, and puts forward some research directions for future work, so as to promote more intelligent and efficient grinding of complex castings in practical application.

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Section: Classification Of Intelligent Grinding Methodsmentioning

confidence: 99%

Analysis of Current Situation, Demand and Development Trend of Casting Grinding Technology

Liang

Qiao

2022

Micromachines

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“…Sifat fisik kimia pada material berguna untuk evaluasi awal pembentukan percikan dan lapisan bubuk energi pengapian dari lapisan debu dapat menjadi indikator untuk mengevaluasi percikan [12]. Baja karbon rendah umumnya memiliki poros jalur percikan api yang panjang, dengan sedikit semburan [13].…”

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Penentuan Jenis Baja Scrap sebagai Bahan Baku Proses Pengecoran Logam di IKM dengan Metode Spark Testing

Sukis

Rusnaldy²,

Paryanto

et al. 2021

j.rekayasa.mesin.

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Pengecoran logam di Indonesia sangat diperlukan di industri manufaktur, salah satu faktor yang sering terjadi adalah proses pemilihan material awal pada pengecoran, terutama mengetahuai unsur yang terkandung didalam baja scrap. Salah satu metode untuk mengetahui kandungan karbon pada baja scrap adalah metode spark testing. Penelitian ini bertujuan untuk menganalisis karakterisasi spark pada proses gerinda melalui identifikasi jenis baja scrap berdasarkan panjang spark, sudut spark dan sudut kontak spark. Dimensi dari sampel meliputi 100x50x10 mm, sudut pemakanan adalah 75ᵒ dengan grit size batu gerinda yaitu 36, 60 dan 80. Penekanan menggunakan gaya gravitasi dari spesimen itu sendiri selama 30 detik. Perbedaan volume stream dan bentuk karakterisasi spark dipengaruhi oleh kandungan komposisi kimia baja dan grit batu gerinda. Dengan menggunakan metode ini dapat mempermudah identifikasi awal baja scrap sebelum dilakukan pengecoran logam, sehingga hasil yang didapat adalah material dengan kandungan karbon lebih tinggi menghasilkan sudut spark melebar, kemudian sudut kontak akan mengecil dan ukuran spark semakin pendek. Kandungan karbon 0,54%C telah menghasilkan pancaran burst lebih banyak. Menggunakan ukuran batu gerinda 80 grit (fine) telah menghasilkan jarak pada pancaran burts terjadi melebar di semua material.

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High temperature generated by sliding metal friction and its effectiveness as an ignition source for hydrogen

Song¹,

Jiang²,

Gao³

2022

Journal of Loss Prevention in the Process Industries

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Friction spark generation and incendivity of several metal alloys

Cited by 7 publications

References 21 publications

Analysis of Current Situation, Demand and Development Trend of Casting Grinding Technology

Analysis of Current Situation, Demand and Development Trend of Casting Grinding Technology

Penentuan Jenis Baja Scrap sebagai Bahan Baku Proses Pengecoran Logam di IKM dengan Metode Spark Testing

High temperature generated by sliding metal friction and its effectiveness as an ignition source for hydrogen

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