Performance analysis of cow dung as an eco-friendly additive material for sustainable moulding and casting  

作　　者：Manjunath Patel G C Kapil Gupta Ganesh Chate Mahesh B Parappagoudar Sandeep M Jayashankar Umesh M Daivagna 

机构地区：[1]Dept.of Mechanical Engineering,PES Institute of Technology and Management,Shivamogga,Affiliated to Visvesvaraya Technological University,Belagavi,India [2]Dept.of Mechanical and Industrial Engineering Technology,University of Johannesburg,South Africa [3]Dept.of Mechanical Engineering,KLS Gogte Institute of Technology,Belgaum,Affiliated to Visvesvaraya Technological University,Belagavi,India [4]Dept.of Mechanical Engineering,Padre Conceicao College of Engineering,Verna,India [5]Dept.of Mechanical Engineering,Ballari Institute of Technology and Management,Bellary,Affiliated to Visvesvaraya Technological University,Belagavi,India

出　　处：《China Foundry》2019年第6期423-429,共7页中国铸造（英文版）

摘　　要：In the present work,an attempt is made to partially replace high cost silica sand with sustainable eco-friendly cow-dung.The practical utility of cow dung as an additive material that facilitates binding in sand moulds has been tested.The Taguchi method is used to plan and conduct nine experiments with three replicates each.Pareto analysis of variance study is performed to understand the practical significance of moulding sand variables,that is,percentage of cow dung,clay,water,and degree of ramming on sand mould properties.The conflicting multiple objective functions(maximize mould hardness,and minimize collapsibility and gas evolution)are optimized by utilizing the Data Envelopment Analysis Ranking(DEAR)method.The optimal parameters i.e.6%of clay,4%of water,5%of cow-dung and 4 numbers of ramming strokes are obtained by applying a hybrid Taguchi-DEAR method.These parameters show the best moulding properties are:mould hardness 55,gas evolution 5.9 ml·g-1,and collapsibility 470 g·cm-2.Thereafter,a Lovejoy coupling made of aluminium is cast in the sand mould prepared with cow dung and without cow dung,with the optimum set of parameters.The mechanical properties,surface finish,and microstructure of the casting cast with cow-dung are better than that without cowdung.In the present work, an attempt is made to partially replace high cost silica sand with sustainable eco-friendly cow-dung. The practical utility of cow dung as an additive material that facilitates binding in sand moulds has been tested. The Taguchi method is used to plan and conduct nine experiments with three replicates each. Pareto analysis of variance study is performed to understand the practical significance of moulding sand variables, that is, percentage of cow dung, clay, water, and degree of ramming on sand mould properties. The conflicting multiple objective functions（maximize mould hardness, and minimize collapsibility and gas evolution） are optimized by utilizing the Data Envelopment Analysis Ranking（DEAR） method. The optimal parameters i.e. 6% of clay, 4% of water, 5% of cow-dung and 4 numbers of ramming strokes are obtained by applying a hybrid Taguchi-DEAR method. These parameters show the best moulding properties are: mould hardness 55, gas evolution 5.9 ml·g-1, and collapsibility 470 g·cm-2. Thereafter, a Lovejoy coupling made of aluminium is cast in the sand mould prepared with cow dung and without cow dung, with the optimum set of parameters. The mechanical properties, surface finish, and microstructure of the casting cast with cow-dung are better than that without cowdung.

关 键 词：CASTING cow-dung optimization sand MOULD sustainability 

分 类 号：TG221.1[金属学及工艺—铸造]