Effect of Binder and Mold parameters on Collapsibility and Surface Finish of Gray Cast Iron No-bake Sand Molds

International Conference on Materials, Alloys and Experimental Mechanics 2017

材料科学;金属学;机械制造

Srinivasulu Reddy, K.^1 ; Venkata Reddy, Vajrala^2 ; Mandava, Ravi Kumar^3

Department of Mechanical Engineering, Adama Science and Technology University, Adama, Ethiopia^1

Department of Industrial Engineering, Dire Dawa Institute of Technology, Dire Dawa University, Dire Dawa, Ethiopia^2

School of Mechanical Sciences, IIT Bhubaneswar, Bhubaneswar, India^3

关键词: Binder systems;    Chemically bonded;    Gray cast iron;    Green sand molds;    Phenolic urethane;    Process parameters;    Sodium silicate;    Surface finishes;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/225/1/012246/pdf
DOI  :  10.1088/1757-899X/225/1/012246

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Chemically bonded no-bake molds and cores have good mechanical properties and produce dimensionally accurate castings compared to green sand molds. Poor collapsibility property of CO2 hardened sodium silicate bonded sand mold and phenolic urethane no-bake (PUN) binder system, made the reclamation of the sands more important. In the present work fine silica sand is mixed with phenolic urethane no-bake binder and the sand sets in a very short time within few minutes. In this paper it is focused on optimizing the process parameters of PUN binder based sand castings for better collapsibility and surface finish of gray cast iron using Taguchi design. The findings were successfully verified through experiments.