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good perfomance agitation tank

good perfomance agitation tank

Development And Performance Evaluation Of An Agitated ...

Heat treatment is one of the most important industrial finishing operations which helps in the improvement of mechanical properties such as hardness, tensile strength and impact strength of components being used in our day to day activities. A common method of achieving this is through quenching . An agitated quenching bath with capacity of 0.1m3 and four different speeds of agitation was developed and its performance evaluated. Medium carbon steel and ductile cast iron alloy samples were used for the performance evaluation of the quenching bath. Water at room temperature was used as quenchant. Hardness, impact strength and microstructural analysis tests were carried out on the quenched samples, results obtained and graphs plotted. Quenching in the agitated bath resulted to an increase in hardness and tensile strength, whereby hardness of medium carbon steel increased from 231HBN to 621HBN and that of ductile cast iron from 263HBN to 662HBN. It was discovered th...

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Title Page Title page i. Declaration ii. Certification iii. Dedication iv. Acknowledgements v. Abstract vi. Table of Content vii. List of Figures xiii. List of Tables xiv. List of Plates xv. List of Drawings xvii. List of Appendices xviii. List of Symbols xix. CHAPTER ONE: INTRODUCTION 1.1 Background of the Study 1. 1.2 Statement of the Problem 2. 1.3 Justification of the Study 3. 1.4 Significance of the Study 3. 1.5 Aims and Objectives 4. 1.6 Scope of the Study 4. vii CHAPTER TWO: LITERATURE REVIEW 2.1 Quench Hardening Heat Treatment 6. 2.2 Quenching Media 7. 2.2.1 Types of Quenching Media 8. 2.2.2 Characteristics of Quenchants 9. 2.3 Mechanism of Cooling During Quenching in a 10. Liquid Medium 2.3.1 Wetting Kinematics During Quenching 11. 2.4 Agitation of a Quenching Medium and its 13. Importance 2.4.1 Agitation of Quenching Medium 13. 2.4.2 Importance of Agitation of Quenching Medium 14. 2.5 Hardenability 15. 2.6 Classification of Heat Treatment Methods 16. 2.6.1 Annealing and No...

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1.0 INTRODUCTION 1.1 Background to the Study Agitation of a quenching bath is one of the techniques used to create turbulence in a liquid during quench hardening heat treatment of steel/cast iron components which is usually applied to manufactured machine components before they are finally put into service or the market. The hardening process is usually carried out by using heat treatment equipment comprising a heating furnace and a quenching tank containing a liquid medium at room temperature . Although, there are some types of hardening methods that do not required quenching in a liquid medium. Allen defined hardening as a number of heating and controlled cooling operations that will provide desired properties in a metal or alloy. According to Rajan et al, , heat treatment is a process of heating and cooling operation applied to metals and alloys in the soli...

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