Friction heat ball in round-to-half circle drawing and its effect on the material's skin shearing

被引：0

作者：

Heo, Y. ^{[1
]}

Kim, N. Y. ^{[1
]}

Nam, J. W. ^{[2
]}

Chung, I. G. ^{[2
]}

Joun, M. S. ^{[3
]}

机构：

[1] Gyeongsang Natl Univ, Sch Mech & Aerosp Engn, Jinju 52828, Gyeongsangnam D, South Korea

[2] Pungsung Precis Pipe, 81,Yongdeok Ro 302beon Gil,Hallim Myeon, Gimhae City 50852, Gyeongsangnam D, South Korea

[3] Gyeongsang Natl Univ, Engn Res Inst, Sch Mech & Aerosp Engn, Jinju 52828, Gyeongsangnam D, South Korea

来源：

TRIBOLOGY INTERNATIONAL | 2024年 / 197卷

基金：

新加坡国家研究基金会;

关键词：

Friction heat ball; Skin-shearing; Round -to-half circular drawing; Steady flow and non-steady temperature; scheme; OPTIMAL PROCESS DESIGN; FINITE-ELEMENT-METHOD; PLASTIC-DEFORMATION; INTERMEDIATE DIE; TUBES; FABRICATION; THICKNESS; EXTRUSION; STRESS; STEEL;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Skin-shearing phenomenon owing to friction heat during a round -to-half circle drawing (RtHCD) is revealed using the non-isothermal finite element method assisted by the novel steady flow and non-steady temperature scheme (SFNSTS). During the RtHCD, the heated local region of the drawing die forms a friction heat ball (FHB) at the flat die side. The FHB heats the material, causing a sharp increase in the material skin 's temperature. This peculiar thermal phenomenon results in a drastic decrease in the flow stress on the material 's skin. A vicious circle of increased friction, accelerated heat, and reduced flow stress is activated, which eventually incurs the material 's skin-shearing phenomenon, experimentally and numerically validated.

引用

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页数：15

共 4 条

[1] Friction heat ball in round-to-half circle drawing and its effect on the material's skin shearing
Heo, Y.
Kim, N.Y.
Nam, J.W.
Chung, I.G.
Joun, M.S.
Tribology International, 2024, 197
[2] Friction heat ball in round-to-half circle drawing and its effect on the material's skin shearing
Heo, Y.
Kim, N. Y.
Nam, J. W.
Chung, I. G.
Joun, M. S.
TRIBOLOGY INTERNATIONAL, 2024, 197
[3] Effect of coating material on heat transfer and skin friction due to impinging jet onto a laser produced hole
Shuja, S. Z.
Yilbas, B. S.
OPTICS AND LASER TECHNOLOGY, 2013, 49 : 243 - 250
[4] Effect of Porous Fraction and Interfacial Stress Jump on Skin Friction and Heat Transfer in Flow Through a Channel Partially Filled with Porous Material
Bhargavi, D.
Satyamurty, V. V.
Sekhar, G. P. Raja
JOURNAL OF POROUS MEDIA, 2009, 12 (11) : 1065 - 1082

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