Abstract

During extrusion process ,the effects of friction between die and workpiece are important and it is one of the most serious problems in metal forming. Friction factor has different effects depending on the size of workpiece. In this study the effect of friction factor and lubrication effects on temperature distribution , power , and load for combined backward forward extrusion process was demonstrated . A numerical analysis based on finite element method by using Q form program was used to study the effect of friction factor through two type of condition , first for lubrication three values for friction factor were used ( 0.1, 0.2 ,0.3 ) .The second condition was un lubrication , the friction factors values were (0.25 , 0.5 ,0.75) . The material of specimen was steel C45.The parts to be manufactured was wrench socket and the lubrication was done by using water and graphite .The results showed that for lubricated and un lubricated conditions , the temperatures power and load were increased when the friction factor increased .

References

[1] M O Mutlu , C G Guleryuz , Z Parlar l . “ Numerical investigation of the effect of friction conditions to increase die life "13th International Conference on Tribology, ROTRIB’16 IOP Publishing IOP Conf. Series: Materials Science and Engineering 174 012046 doi:10 , 2017.
[2] A. Farhoumand , R.Ebrahimi “Analysis of forward- backward radial extrusion process " , AlSEVIER ,Materials and Design 30, 2152-2157 , 2009 .
[3] S.H kim , S.W. Chung, S. Padmanaban. " Investigation of lubrication effect on the backward extrusion of thin –walled rectangular aluminum case with large aspect ratio " Journal of materials processing Technology 185-192 180 , 2006 .
[4] Shunpei Kamitani , Kenji Nakanishi, Yong-Ming Guo . " Performance evaluation of lubricant for producing smooth surface product in cold extrusion of aluminum using tool with micro groove
arrays " 11th international conference on tecknology of plasticity 19-24 Japan , 2014 .
[5] K.Kuzman , E. Pfeifer , N.Bay , J.Hunding . "Control of material flow in a combined backward can forward rod extrusion " Journal of Material Processing Technology 60 (141-147) , 1996 .
[6] Ryo Matsumoto , Kazunori Hayashi , Hiroshi Utsunomiya "Experimental and numerical analysis of friction in high aspect ratio combined forward – backward extrusion with retreat and advance
pulse ram motion on a servo press " , ELSEVIER, Journal of Materials Processing Technology 214 , 936-944, 2014 .
[7] Kanhu Charan Nayak , Susanta Kumar Sahoo . " Three dimensional analysis of combined extrusion –forging process ", Roll No. 211Me2352 ,National Institute of Technology Rourkela 769008, India, 2013 .
[8] Moveh Samuel, Gambo Anthony. " Effects Of Vegetable Based Oils Lubricants In The Extrusion Of Aluminium" International journal of scientific and technology research volume 5, issue 08 , 2016 .
[9] H. Sönmez " Research of the effect of lubrication on extrusion load in direct extrusion " mechanical engineering ,Turkey , 2016 .
[10] Armin Buschhausen , Klaus Weinmann , Joon Y. Lee , Taylan Altan . " Evaluation of lubrication and friction in cold forging using a double backward-extrusion process " Journal of Materials Processing Technology, 95-108 95 Elsevier 33 , 1992 .
[11] V.Jayaseelan , K .Kalaichelvan . " Influence of Friction Factor on Extrusion Process " Advanced Materials Research Vol 622-623 (2013) pp 457-460 Trans Tech Publications , Switzerland , 2013.
[12] C. C. Chang , C. H. Hsu , J. C. Lai. " Estimation of friction factor at workpiece–die interface in combined forward and backward hollow extrusion of brass at micro scale " Texas A & M International University , 2016 .