A study of sheet metal stamping processes of lightweight parts. Introduction, multi-stage stamping of wheel disk having large inner corner thickness by means of conical punch, two-stage stamping of tailor circular blank for increase in wall thickness of wheel disk, multi-stage stamping of high strength steel wheel disk having large inner corner thickness, multi-stage stamping of tailor square blank for increase in wall thickness at bottom corner of square cup. | A study of sheet metal stamping processes of lightweight parts February 2008 Tan Chin Joo Chapter Contents 1. Introduction. Multi-stage stamping of wheel disk having large inner corner thickness by means of conical punch. 2. 3. 4. 5. 6. Two-stage stamping of tailor circular blank for increase in wall thickness of wheel disk. Multi-stage stamping of high strength steel wheel disk having large inner corner thickness. Multi-stage stamping of tailor square blank for increase in wall thickness at bottom corner of square cup. Two-stage stamping of cold drawn magnesium alloy cup having small bottom corner. Chapter 1 Introduction Control of thickness distribution of stamped products for reduction in weight Welding lines Long welding lines & high material loss Tailor welded blank One-dimensional distribution Tailor rolled blank Flat Local thickening Stamping Small thickness: low strength Large thickness: Small thickness blank Lightweight high strength Proposed method for reduction in weight Forming of lightweight material for reduction in weight of parts Magnesium alloy Advantages • Density : 1/4 of mild steel • Specific strength : 2 times of mild steel Disadvantages • Low formability at room temperature • Formed at elevated temperature • Heating apparatus is expensive and complicated A study of sheet metal stamping processes of lightweight parts Chapter Contents 1. Introduction. Multi-stage stamping of wheel disk having large inner corner thickness by means of conical punch. 2. 3. 4. 5. 6. Two-stage stamping of tailor circular blank for increase in wall thickness at inner corner at inner corner of wheel disk. Multi-stage stamping of high strength steel wheel disk having large inner corner thickness. Multi-stage stamping of tailor square blank for increase in wall thickness at bottom corner of square cup. Two-stage stamping of cold drawn magnesium alloy cup having small bottom corner. Chapter 2 Multi-stage stamping of wheel disk having large inner .
