A whole forming process of friction hydro pillar processing (FHPP) with the rod and hole of cylindrical shape is filmed by a high-speed camera for observing the red-hot state and appearance changes. The welding process of FHPP is divided into several segments of welding respectively according to the rod consumption and the welds of each of these segments are made into longitudinal section specimens. A synchronized analysis is done on basis of the curves of the welding parameters, high-speed camera images and longitudinal sections of each subsection welding unit. The welding process is divided into pre-welding, welding and holding stages according to the parameter curves and the states of the units. All of the welding parameters especially the torque fluctuate during the welding process. It is discovered that a series of discontinuous friction shearing layers are generated during the welding process and these friction shearing layers are constantly “generated-collapsed-squeezed out” to form the friction stitch welding unit. The material squeezed out can be divided into two parts named rod flash and base metal flash.
QU Rui
,
YANG Lijun
,
TIAN Lifeng
,
XU Wei
,
CUI Lei
,
YIN Yayun
. Procedure Analysis of Friction Hydro Pillar Processing[J]. Journal of Mechanical Engineering, 2016
, 52(8)
: 97
-103
.
DOI: 10.3901/JME.2016.08.097
[1] 陈家庆,焦向东,周灿丰,等. 新型材料成形加工技术——摩擦叠焊[J]. 焊接学报,2007,28(9)：108-112.
CHEN Jiaqing, JIAO Xiangdong,ZHOU Canfeng,et al. A new material forming technology：Friction stitch welding[J]. Transactions of the China Welding Institution,2007,28(9)：108-112.
[2] THOMAS W M,NICHOLAS E D,JONES S B,et al. Friction forming：U.S. Patent 5,469,617[P]. 1995-11-28.
[3] MEYER A. Friction hydro pillar processing：Bonding mechanism and properties[D]. Geesthacht：TechnischeHochschule Carolo-Wilhelmina zu Braunschweig,2003.
[4] NICHOLAS E D. Friction hydro pillar processing[C]//11th Annual North American Welding Research Conference. 1995：7-9.
[5] HATTINGH D G,BULBRING D L H,ELS-BOTES A,et al. Process parameters influence on performance of friction taper stud welds in AISI 4140 steel[J]. Materials and Design,2011(32)：3421-3430.
[6] ZINSKI M,PAES M P,BASTIAN F L,et al. Fracture toughness of friction hydro-pillar processing welding in C-Mn steel[J]. Materials and Design,2012(33)：340-344.
[7] 陈中海,陈家庆,焦向东,等. 摩擦叠焊的基础研究及工程应用[J]. 电焊机,2009,39(4)：109-116.
CHEN Zhonghai,CHEN Jiaqing,JIAO Xiangdong,et al. Analysis of fundamental research and engineering application on friction stitch welding[J]. Electric Welding Machine,2009,39(4)：109-116.
[8] 高辉. 摩擦叠焊试验装置及焊接工艺研究[D]. 北京：北京化工大学,2010.
GAO Hui. Study of friction stitch welding test device and welding process[D]. Beijing：Beijing University of Chemical Technology,2010.
[9] CUI L,YANG X,WANG D,et al. Friction taper plug welding for S355 steel in underwater wet conditions: Welding performance,microstructures and mechanical properties[J]. Materials Science and Engineering：A,2014,611：15-28.
[10] 殷亚运,杨新岐,崔雷,等. DH36高强度钢摩擦柱塞焊工艺与接头组织性能[J]. 焊接学报,2014,35(9)：109-112.
YIN Yayun,YANG Xinqi,CUI Lei,et al. Microstructure and properties of friction hydro pillar processed DH36 high strength steel[J]. Transactions of the China Welding Institution,2014,35(9)：109-112.
