WEAR TEST ON ALUMINIUM FOAM PREPARED FROM ALUMINIUM (LM0) AS BASE METAL AND DOLOMITE (CaMg (CO3)2) AS FOAMING AGENT

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1 WEAR TEST ON ALUMINIUM FOAM PREPARED FROM ALUMINIUM (LM0) AS BASE METAL AND DOLOMITE (CaMg (CO3)2) AS FOAMING AGENT Prakash Manharan 1, *, Miln Selvam Dennisn 2, Karuppasamy Ramasamy 3, Balakumar S 4 1-4Assistant Prfessr, Department f Mechanical Engineering, Karpagam Academy f Higher Educatin, Cimbatre , INDIA *** Abstract: The aim f this prject is t prduce aluminium fam frm aluminium (LM0) fr the applicatin f light weight structural cmpnents. Melt rute methd is the technique adapted, in which 2kgs f aluminium (LM0) is melted t its melting temperature (750 C) and 200g f preheated dlmite CaMg (CO 3 ) 2 was mixed t the mlten metal and stirred fr secnds at 1200 rpm apprximately. Gas bubbles prduced in the liquid aluminium (LM0) frm cells and pres. The mixer then was slidified at rm temperature, t get aluminium fam. Finally pin-n-dist test was cnducted t study the wear behavir f the metal fam. Keywrds: Aluminium (LM0), dlmite, melt rute methd, pin-n-dist test. 1. Intrductin The fam is characterized as a unifrm scattering f gas rises in a fluid, islated by thin film f fluid making a pre r cell. In glbalizatin there is an severe struggle between the manufacturing sectrs fr chsing a metal fr ecnmical prductin f the cmpnent [1-4]. In current scenari, the fam materials and cmpsite materials are used in industries [5-8]. Due t their structure fams behave differently in testing when cmpared t cnventinal metal. The behavir f aluminium fams depends n several parameters such as: tensile strength, shear strength, impact strength, hardness strength and pear prperty [9-16]. Machinability f metals has received significant attentin because f high tl wear cnnected with machining [17-26]. Banhart [3] reviewed abut the intrductin f aluminium fams, its prperties, applicatins and its varius types f its manufacturing methds. Simancik et al., [5] had dne a wrk n preparatin f Aluminium fam - a new light weight structural material by melt rute methd. Duarte et al., [6] had dne a wrk n aluminium Ally Fams: prductin and prperties. Mukherjee [7] reviewed abut the intrductin f aluminium fams, its prperties, applicatins and its varius types f its manufacturing methds. Surace et al., [9] said n a wrk n investigatin and cmparisn f the different manufacturing techniques f the aluminium fam. Vivekananthan and Senthamarai [10] said n a wrk n experimental evaluatin f aluminium fly ash cmpsite material t increase the mechanical and wear behavir by stir casting methd. Hussain and Suffin [11] investigated the micrstructure and mechanical behavir f the fam prduced by sintering disslutin prcess. Initially, 2kgs f LM0 grade aluminium was melted in the furnace. The melting temperature f aluminium was abut 750 C. After attaining the melting pint the preheated faming agent was added in the rati f 1:10 t the mlten aluminum and the aluminium fam is prepared by using stir casting furnace. 2. Experimental Prcedure 2.1. Melt Rute Methd Aluminium bar is melted t its melting temperature (750 C). The mlten metal is stirred fr several minutes. The dlmite pwder was pre heated up t 200 C and it is mixed with the mlten metal. The faming agent attains the decmpsitin temperature (660 C) the carbn dixide (CO 2 ) which is present in it will be emitted as CO 2 gas. The unifrm gas bubbles are frmed by stirring. This makes the prsity inside the mlten aluminium; finally the created aluminium fam is slidified int mlten metal. 2018, IRJET Impact Factr value: ISO 9001:2008 Certified Jurnal Page 210

2 2.2. Reactin f dlmite: When the dlmite attains the decmpsitin temperature the carbn dixide (CO 2 ) which is present in it will be emitted in the frm f CO 2 gas. S the unifrm dispersin f gas bubbles is frmed by stirring it at 1200rpm. This makes the prsity inside the mlten aluminium s that the fam is created. CaMg (CO 3 ) 2 = CaCO 3 +MgO+CO 2 (1) CaCO 3 = CaO+CO 2 (2) Table 1: Preheated faming agent (Dlmite) Sl. N. Weight f Al (Kg) Raise f temp ( C) Drp f temp( C) Weight f faming agent (Dlmite) (Grams) Stirring time (Sec) Stirring speed (rpm) Slidificatin Rm temperature Figure 1: Stir Casting Set up 3. Results and Discussins 3.1. Pin n Disc Test Figure 2: Schema f wear test 2018, IRJET Impact Factr value: ISO 9001:2008 Certified Jurnal Page 211

3 Where, Specificatins F: Applied nrmal lad R: Radius f the wear track that is prduced d: Diameter f the spherical tp f the pin D: Diameter f the disc W: Rtatinal speed Pin diameter = 10mm Pin length = 10mm Observatin Disk rtatinal speed = 238 rpm Velcity =1.5m/s Distance = 1000 m Lad = 1.5 kg Table 2: Wear test result Time Wear Frictin Frce Temperature ( 0 C) Time Vs Wear wear As time increases, wear increases with respect t time. 2018, IRJET Impact Factr value: ISO 9001:2008 Certified Jurnal Page 212

4 Time Vs FF FF As time increases the frictin frce (FF) increases up t certain pint and it is maintained gradually fr a certain perid f time. Time Vs Temp temp As time increases the temperature decreases with respect t time. 4. Cnclusin Aluminium fam was prduced, using dlmite as faming agent in the rati f 10:1 by melt rute methd. The mechanical prperties like tensile strength and hardness were tested. The preheated Dlmite-aluminum fam samples have the better prsity and gd mechanical prperties. In general applicatins like windw, sliding drs, etc were pure Aluminium are used. Aluminium fam can be used as an alternative material fr the abve applicatins. References [1]. Arnld, M., Krner, C. and Singer, R.F., PM aluminium fams: stabilizing mechanism and ptimisatin. Cellular Metals: Manufacture, Prperties, Applicatin, pp [2]. Ashlt, P., Aluminium fam prduced by the melt faming rute prcess, prperties and applicatins. Metal Fams and Prus Metal Structures, pp , IRJET Impact Factr value: ISO 9001:2008 Certified Jurnal Page 213

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