1. Introduction Manufacturing Processes © 2013 Su-Jin Kim GNU Manufacturing Processes Manufacturing Processes( 기계공작법 ) Introduction Introduction( 서론 ) Associate Professor Su-Jin KimSu-Jin Kim School of Mechanical Engineering Gyeongsang National University

2. Introduction Manufacturing Processes © 2013 Su-Jin Kim GNU What is Manufacturing? Manufacturing( 제조 ) is the process of converting raw materials( 재료 ) into products( 제품 ). Nations with largest GDP growth concentrated on high value- added products, such as automobiles and machinery. Powder Bread Manufacturing?

3. Introduction Manufacturing Processes © 2013 Su-Jin Kim GNU What did we make? Paper  MaskPaper+Bamboo  KitePet bottle  Rocket Chopstick  GunPaper+Bamboo  Airplane Who to make it? Manufacturing Process

4. Introduction Manufacturing Processes © 2013 Su-Jin Kim GNU Materials The types of materials( 재료 ) generally used in manufacturing: 1.Metals : Steels, Aluminium, copper 2.Plastics 3.Ceramics 4.Composite materials ( 복합재료 )

5. Introduction Manufacturing Processes © 2013 Su-Jin Kim GNU Metals Iron (Fe): Cast iron, Steel, Carbon steel, High strength steel, Stainless steel, Tool steel POSCO: http://www.posco.com -> Products and Technologyhttp://www.posco.com Copper (Cu), Brass (Cu+Zn,Zinc), Bronze (Cu+Sn,Tin) Aluminum (Al), Duralumin (Al+Cu+Mg+Mn) Lead, Titanium, Nickel, (Zinc), Gold, Silver

6. Introduction Manufacturing Processes © 2013 Su-Jin Kim GNU Polymer (Plastic) Thermoplastics: Nylon, Polyethylene, Polystyrene, Vinyl Thermosets: Epoxy, Phenolic, Polyester Elastomer: Rubber

7. Introduction Manufacturing Processes © 2013 Su-Jin Kim GNU Composite Reinforced plastics, Concrete (Cement + Sand), Concrete- steel wire, Wood, Polywood, Polymer matrix FRP, Glass reinforced plastic, Carbon reinforced plastic

8. Introduction Manufacturing Processes © 2013 Su-Jin Kim GNU Ceramics Clay, Glass (SiO 2 ), Diamond (C), Alumina (Al 2 O 3 ), Semiconductor (Si+P+B)

9. Introduction Manufacturing Processes © 2013 Su-Jin Kim GNU Material property ~ Process Melting temperature ~ Casting Harness ~ Machining, Grinding Toughness (Ductile-Brittle) ~ Forming Electric property ~ EDM, Welding PropertiesMetalPlasticCeramic Melting temperature 1,000 ℃ 200 ℃ 3,000 ℃ Strength400MPa10MPa-300MPa, +50MPa ToughnessDuctile Brittle HardnessHighLowVery High T. E. conductivityHighLow Stiffness (=E)HighLowHigh Chemical stabilityMidHighVery high DensityHighLowHigh PriceHighLowHigh

10. Introduction Manufacturing Processes © 2013 Su-Jin Kim GNU Melting temperature °CCeramicsMetalsPolymersComposites 4000 Graphite Tungsten 3400 3000SiC MgO Al 2 O 3 2052 2000SiliconPlatinumCermets Iron 1500, Ti Copper 1000Gold, Silver Al 660, Mg Zinc, LeadPE, PSFRP

11. Introduction Manufacturing Processes © 2013 Su-Jin Kim GNU Material & Process MaterialsProcessProducts Metals Machining Forming Casting Axis Crank arm Engine housing PlasticsInjection moldingToy CeramicSinteringTerning insert Joining processes Welding Mechanical assembly Ship Car SiliconDeposition, EtchingMemory

12. Introduction Manufacturing Processes © 2013 Su-Jin Kim GNU Manufacturing Process Market & Specification Conceptual Design Design for Manufacture Unit Manufacturing Assembly and Joining Machining Injection molding Casting Stamping Chemical vapor deposition Welding Bolting Bonding Soldering Product Sell