Investigation On Corrosion And Its Effect On Mild Steel And 304l Stainless Steel In Food Processing Industries

Abstract

Corrosion Is A Naturally Occurring Phenomenon Defined As The Degradation Of Material Due To Chemical Interaction With The Environment. The Materials Most Commonly Used For Food Processing Machinery Are Different Types Of Steels Which Are Selected On The Basis Of Corrosion Resistant, Non-Toxic, Mechanical Property, And Surface Quality. The Main Aim Of This Research Was To Investigate The Cause Of Corrosion And Its Damage Analysis Of Metals Used In Construction Of Food Processing Machineries. The Corrosion Rate And Morphology Of The Material After Immersing In Different Food Environment As Corrosive Media Were Mango Juice, Tomato Juice And Orange Juice Prepared For Coupon Test Was Investigated. Results Were Anylazied With Weight Loss Method And Corrosive Pit Measurement Using Surface Profilo metry Based On Which Corrosion Rate Were Calculated. In Addition Qualitative Analyst By Imaging Using Sem And Optical Microscopy Were Used. The Electrochemical Measurements Of The Stainless Steel And Mild Steel Specimens Was Measured Using A Three-Electrode Electrochemical Cell By E-Clab Software For Corrosion Measurement Conducted Using Potentiostat. The Effect Of Corrosion On Hardness Was Measured Using Vickers Hardness Test. Mixed Taguchi Design, 18 Orthogonal Array Was Employed For The Experimental Study With Selected Parameters Such As Test Media, Metal Type And Exposure Time. The Analysis Of The Results Revealed Corrosion Rate Of Samples Were Decreased While Weight Loss Was More When Exposure Time Increased. From The Results Of Corrosion Rate Study 304l Stainless Steel Showed More Corrosion Resistance Than Mild Steel. The Lowest Corrosion Rate Was Recorded In Stainless Steel In Tomato Media As 0.0015mmpy. The Micro Hardness Result Revealed That The Hardness Of Metallic Materials Decreased Due To Corrosion Since Pits Developed On The Surface Of Material Aggravating Corrosion Process. This Research Revealed That 304l Stainless Steel And Mild Steel Materials Mostly Attached By Pitting And Uniform Corrosion.