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Automotive Glass Production Engineering: Properties and Applications

Explore the properties, structures, and production of automotive glasses, including tempered, zoned tempered, and laminated glasses. Learn about glass applications, transition temperatures, and various types of popular glasses in the automotive industry. Discover the processes involved in flat glass production and tempering, as well as the benefits of laminating processes for automotive glass.

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Automotive Glass Production Engineering: Properties and Applications

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  1. Automotive Production Engineering; Glasses Somsak Siwadamrongpong 2/2552

  2. Contents • Glass properties • Chemical, Physical and Optical properties • Glass structure • Automotive glasses • Tempered glasses • Zoned tempered glasses • Laminated Glasses • Automotive glass production

  3. Glass Properties • General properties of glasses • High hardness / Brittle • Low density compared to high strength • Low thermal expansion coefficient • Low heat / electrical conductivity • High melting point • Good chemical resistance / Chemical inert • Wide range of optical transmission • Transparent • Translucent • Opaque

  4. Optical transmission

  5. Glass transition temperature; Tg By TMA: Thermal Mechanical Analysis

  6. Glass transition temperature; Tg By DSC: Differential Scanning Calorimetry

  7. Glass Applications

  8. Glass Applications

  9. Glass Applications

  10. Glass Applications

  11. Glass Applications

  12. Glass Applications

  13. Glass Applications

  14. Glass Applications

  15. Popular Glasses • Silicate glasses • Soda lime silicate • Aluminosilicate • Borosilicate • Phosposilicate • Chalcogenide glasses • Fluoride glasses • Ceramic Glaze

  16. Glass structure; silicate (SiO2) Crystalline Amorphous

  17. Glass structure; silicate (SiO2) Tetrahedral SiO2

  18. O O O Si O O O O Si O O Si Si O O O O Si O O O O O Si O Glass structure; silicate : Vitreous silica (SiO2) • Each Si tetrahedron links to 4 tetrahedra by sharing corner with each other • All oxygen are presence as bridging oxygen (BO)

  19. O O O Si Na+ O Na+ O O O- O- Si O O- O- Si Na+ Si Na+ O O O O Si O O O O O Si O Glass structure; silicate : Binary silicate glass (6SiO2-2Na2O) • Network linkage is broken as entering of network modifier • Non-bridging oxygen (NBO) is initiated and its charge is compensated with the metal cation

  20. O O O Na+ Si O O Na+ O O- O- Si O O O Si Si O O Al O O Si O O O O - O O O O Al O Si Na+ Na+ - O O Glass structure; silicate : Ternary alumino-silicate glass (6SiO2-Al2O3-2Na2O) • Network consists of Si and Al tetrahedra • Metal cation is compensated by AlO2- and the excess cation will break the network and compensate with NBO

  21. 2+ 2+ 2+ Glass structure; silicate : Ternary alumino-silicate glass (SiO2-Al2O3-CaO) system Al Si O Ca

  22. Window glasses

  23. Automotive Glasses • Tempered glasses / Zoned tempered glasses • Used for side and rare glasses • Laminated glasses • Used for front glass • Other glasses • UV / IR cut glass • Privacy glass • Water repelling glass

  24. before cooling surface cooling further cooled compression cooler hot hot tension compression cooler Tempered glasses Strength increase 3-5 times of annealed glasses

  25. Tempered glasses Tempered glass Zone tempered glass

  26. Laminated Glasses PVB = Polyvinyl Butyral Interlaying Film

  27. Glass Production Sand powder (SiO2), Al2O3, Na2O, CaO, MgO Raw Materials Floating Technique Flat Glass For construction, panel automotive and others • Tempered Glasses • Laminated Glasses

  28. Flat Glass Production

  29. Floating Technique

  30. Floating Technique A A Section A-A

  31. Floating Technique

  32. Flat Glass Production Line

  33. Flat Glass Production Line

  34. Flat Glass Production Line

  35. Flat Glass Production Line

  36. Glass Tempering Processes

  37. Glass Tempering Processes Washing / Drying Section Laminating / Heating Section

  38. Tempered Glass’s Temperature Inspection

  39. Glass Laminating Processes

  40. Glass Laminating Processes Inspection, Packing

  41. Glass Laminating Processes

  42. Glass Laminating Processes Pre-Processes for Glass Laminating

  43. Glass Laminating Processes Post-Processes for Glass Laminating

  44. Q & A

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