1 / 46

By: Abu Bakar bin Aramjat Department of Ceramic Processing Technology

GLASS PROCESSING ( DCP 5262 ). By: Abu Bakar bin Aramjat Department of Ceramic Processing Technology Kolej Kemahiran Tinggi MARA Masjid tanah M elaka. COURSE INFORMATION. Code: DCP 5262 Course Name : Glass Processing Learning/Week: 1 hour : Theory ( lecture )

wilda
Télécharger la présentation

By: Abu Bakar bin Aramjat Department of Ceramic Processing Technology

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. GLASS PROCESSING ( DCP 5262 ) By: Abu Bakar bin Aramjat Department of Ceramic Processing Technology KolejKemahiranTinggi MARA Masjidtanah Melaka

  2. COURSE INFORMATION • Code: DCP 5262 • Course Name : Glass Processing • Learning/Week: • 1 hour : Theory ( lecture ) • 3 hours: Lab/Practical • Assessment • Course work: • Test 1: 15 % ( UNIT 1 & 2 ) • Test 2: 15 % ( UNIT 3 & 4 ) • Practical Lab: 30 % ( JOB SHEET – 8 ) • Final Exam: 40 %

  3. LEARNING OBJECTIVES • Students should be able to: • Identify various types and properties of common glasses. • Formulate, and determine glass melting and forming process. • Conduct glass testing and identify defects. • Differentiate glass decoration and finishing techniques

  4. COURSE CONTENT • UNIT 1.0 INTRODUCTION TO GLASS • 1.1 History of Glass • 1.2 Glass Families • 1.3Types of Glasses • 1.4 Chemical Compositions of Commercial Glasses • 1.5 Glass Raw Materials • 1.6 General Glass Makings • 1.7 Applications of Glasses • 1.8 Basic Principles of Glass Processing: • Batching, Mixing, Melting, Casting and • Annealing • . • .

  5. COURSE CONTENT • UNIT 2.0 PROPERTIES OF GLASS • 2.1 Glass Formation & Structure • 2.2 Thermal Expansion • 2.3 Micro hardness and Strength • 2.4 Viscosity • 2.5 Chemical Durability • 2.6 Optical Properties • UNIT 3.0 GLASS MELTING • 3.1 Preparation for Glass Melting • 3.2 Glass Melting Furnaces • 3.3 Glass Casting and Shaping • 3.4 Annealing and Tempering

  6. COURSE CONTENT • UNIT 4.0 TESTING OF GLASS • 4.1 Density and Molar Volume • 4.2 Thermal Expansion • 4.3 Micro hardness and Strength • 4.4 Chemical Durability • 4.5 Optical Properties • 4.6 Glass Defect • UNIT 5.0 GLASS DECORATION AND FINISHING • 5.1 Glass Colorants • 5.2 Glass Etching • 5.3 Sand Blasting • 5.4 Stain Glass • 5.5 Laser Techniques

  7. Introduction to Glass What is Glass Glass from Nature Composition of glass Types of glass Advantages & Disadvantages of glass Glass Products Glass Malaysia Scenario

  8. What is Glass An inorganic product of fusion which has been cooled to rigid condition without crystallising- ASTM • A state of matter • A glassy or vitreous surface • A solid with liquid like structure • A non-crystalline solid • An amorphous solid • Short range order

  9. What is Glass “…a material form by cooling from the normal liquid state which has shown no discontinuous change at any temperature, but has become more or less rigid through a progressive increase in its viscosity.”

  10. What is Glass • Uniform amorphous solid material. • Produced when the viscous molten material cools rapidly to below its glass transition temperature, without sufficient time for a regular crystal lattice to form.

  11. What is Glass - characteristics • Clear /transparent • Brittle • Inert • Durable • Luster

  12. Glass from Nature • Magma – molten rock • Fulgurite – lightning • Obsidian – volcanic • Tektites – fire/volcanic

  13. Glass from Nature fulgurite magma obsidian tektites

  14. Silica Sand • Composition of Glass

  15. Glass Additives Boric oxide: B2O3 Barium Carbonate : BaCO3 Potassium Carbonate : K2CO3 AluminiumOxide : Al2O3 Zinc Oxide : ZnO Titanium Oxide : TiO2 Zirconium Oxide : ZrO2

  16. Function additive in glass • ALUMINA in glass for : • improved weathering and • less devitrification (crystallisation), • BORATES for easier working and lower thermal expansion, • ARSENIC OR ANTIMONY OXIDE for fining (removal of bubbles).

  17. Type of Glass • The main types of glass are: • Commercial Glass also known as Soda-lime-silicate glass • Lead Glass • Borosilicate Glass • Glass Fibre

  18. Type of Glass • Types of special glass include: • Vitreous silica • Aluminosilicate glass • Alkali-barium silicate glass • Technical Glass • Glass Ceramics • Optical glass • Sealing glass

  19. Types of Glass • Important class of compositions is the BOROSILICATES. • lower thermal expansion • better thermal shock resistance, • improved chemical durability, • for such applications as automobile head-lamps, cooking wares and laboratory apparatus

  20. Types of Glass • ALUMINO SILICATE GLASSES for : • chemical durability, • resistance to devitrification, • higher temperature, and • greater strength in cooking wares, • glass ceramics, fiber glass and seals.

  21. Types of Glass • FUSED SILICA is especially valuable for : • high-temperature stability, • low thermal expansion and • high thermal shock resistance, • excellent chemical durability, purity and good optical transmission in the ultraviolet.

  22. Types of Glass • LEAD GLASSES are used for • high refractive index, • easier working and • greater density • for lamp envelopes, seals, optical glass • CRYSTAL GLASS for art and tableware

  23. Advantages of Glass • Inert • Does not corrode • Durable • Optical transparency • Many forming method • Many composition • Cheap

  24. Disadvantages of Glass • Brittle • Breakable • Heavy

  25. Glass Products • Window glass • Glass containers • Fiber glass • Optical glass / lens • Technical glass / laboratory glass • Safety glass / windscreen glass • Glass panels / building • Tableware / cooking ware • Bulb/chandelier/lighthing • Laser glass • Glass mirrors • Glass ceramic

  26. Glass Products

  27. History of Glass • The word glass is derived from a late-Latin term glaesum, used to refer to a lustrous a transparent material • Another word often used to refer to glassy substances is vitreous, originating from the Latin word vitrum. • Luster or shine and in particular its durability when exposed to the elements of nature, were probably the most significant properties of glass recognised by early civilisations.

  28. History of Glass The history of the origin of glass can be categorized by periods according to the methods of the manufacturing process as follows: • The First Period: 1700 BC through 100 AD • Primitive method of making glass using molds. • The Second Period: 100 AD through 400-500 AD • Glassblowing technique discovered, and glass manufacture becomes a more practical process. • The Third Period: 4-500 AD ~ 1200 AD • Middle Ages, characterized by Byzantine glass.

  29. History of Glass • The Fourth Period: 1200 AD ~ 1900 AD • Venetian glass, foundation for modern glass making is set. • The Fifth Period: 1900 AD ~ present • Glass objects used as everyday goods; large scale manufacturing. • The science and engineering of glass as a material was much better understood, and in the late 1950's Sir Alastair Pilkingtonintroduced a new revolutionary production method (float glass production), by which 90% of flat glass is still manufactured today.

  30. History of Glass • The word glass is derived from a late-Latin term glaesum, used to refer to a lustrous a transparent material • Another word often used to refer to glassy substances is vitreous, originating from the Latin word vitrum. • Luster or shine and in particular its durability when exposed to the elements of nature, were probably the most significant properties of glass recognised by early civilisations.

  31. History of Glass The history of the origin of glass can be categorized by periods according to the methods of the manufacturing process as follows: • The First Period: 1700 BC through 100 AD • Primitive method of making glass using molds. • The Second Period: 100 AD through 400-500 AD • Glassblowing technique discovered, and glass manufacture becomes a more practical process. • The Third Period: 4-500 AD ~ 1200 AD • Middle Ages, characterized by Byzantine glass.

  32. History of Glass • The Fourth Period: 1200 AD ~ 1900 AD • Venetian glass, foundation for modern glass making is set. • The Fifth Period: 1900 AD ~ present • Glass objects used as everyday goods; large scale manufacturing. • The science and engineering of glass as a material was much better understood, and in the late 1950's Sir Alastair Pilkingtonintroduced a new revolutionary production method (float glass production), by which 90% of flat glass is still manufactured today.

  33. Quick Question Name four of the major technological achievements in glass which have had the most profound impact on mankind

  34. Quick Question - Answer Glass window – which enables sunlight to come into dwelling unit Lenses – opthamics for improved vision,microscope,telescope optics Light bulb envelope - lighting Semiconducting glasses – for computer memory, solar cell, photocopiers

  35. History of Glass • The word glass is derived from a late-Latin term GLAESUM, used to refer to a lustrous a transparent material • Another word often used to refer to glassy substances is vitreous, originating from the Latin word vitrum. • Luster or shine and in particular its durability when exposed to the elements of nature, were probably the most significant properties of glass recognised by early civilisations.

  36. History of Glass The history of the origin of glass can be categorized by periods according to the methods of the manufacturing process as follows: • The First Period: 1700 BC through 100 AD • Primitive method of making glass using molds. • The Second Period: 100 AD through 400-500 AD • Glassblowing technique discovered, and glass manufacture becomes a more practical process. • The Third Period: 4-500 AD ~ 1200 AD • Middle Ages, characterized by Byzantine glass.

  37. History of Glass • The Fourth Period: 1200 AD ~ 1900 AD • Venetian glass, foundation for modern glass making is set. • The Fifth Period: 1900 AD ~ present • Glass objects used as everyday goods; large scale manufacturing. • The science and engineering of glass as a material was much better understood, and in the late 1950's Sir Alastair Pilkingtonintroduced a new revolutionary production method (float glass production), by which 90% of flat glass is still manufactured today.

  38. Byzantine Glass Venetian Glass Blowing Glass Float Glass

  39. Glass Industry in Malaysia: present Industry Scenario The present production capacity of the flat and container glass industry is capable of supporting the domestic market demand and subsequently a substantial amount of output is exported. The output is currently in the rgion of 650 tonnes of glass containers and 500000 tonnes of flat glass annually

  40. Glass Malaysia Scenario

  41. Glass Malaysia Scenario

  42. Existing Local manufacturers based on product Grouping

  43. Existing Local manufacturers based on product Grouping

  44. Existing Local manufacturers based on product Grouping

  45. End of lecture Thank you…

More Related