Analysis of casting defects and identification of remedial measures - A diagnostic study

摘要

The paper presents analysis of casting defects and identification of remedial measures carried out at Dakshin Foundry Ltd., Bangalore, India. Diagnostic study carried out on Trunion Support Bracket (TSB) Castings revealed that the contribution of the four prominent defects in casting rejections are sand drop, blow hole, mismatch, and oversize. It was noticed that these defects are frequently occurring at particular locations. Systematic analyses were performed to understand the reasons for defects occurrence and suitable remedial measures were identified. Outcome of the validation trials showed substantial reduction in rejection of castings. Company has accepted the remedial measures and incorporated them in the standard operating procedure.