FROM SAND TO OUR HOME: THE PRODUCTION PROCESS OF GLASS

Production of Glass

FROM SAND TO OUR HOME: THE PRODUCTION PROCESS OF GLASS

Hello, dear readers. This week, we will examine together the production process of glass cups, which have a significant place in all of our lives. Who knows, maybe someday you will be interested in working in this field. Enjoy reading.

Content:

  1.  Raw Materials

  2. Melting

  3. Shaping

  4. Cooling

  5. Cutting and Polishing

  6. Cleaning and Inspection

  7. Packaging and Distribution

Raw Materials: I'm sure most of us have heard in one way or another that glass is made from sand. Technically, this information is correct. The main component of glass is sand. However, sand alone is not sufficient for making glass. Although the ratio and variety of added materials may vary depending on the type of glass, below is a list of the most commonly used basic raw materials and their purposes:

  • Ordinary Sand: The sand used in glass production generally contains silica (silicon dioxide) mineral. Silica is the basic building block of glass, providing transparency, durability, and chemical stability. It is preferred due to its melting point, fluidity, and chemical stability.

  • Chalk: Chalk is commonly used in glass production to regulate the composition of the glass mixture and control its properties.

  • Salt Cake (Na₂SO₄): In the glass industry, salt cake is used to regulate the chemical composition of glass, control the fluidity of the glass mixture, and achieve the desired properties of glass.

  • Coke: Coke is commonly used in glass furnaces that require high temperatures and can also be used as a reducing agent. It helps reduce unwanted substances like iron oxide in the glass.

  • These are our basic raw materials. In addition to these, production facilities use clarifying agents and coloring agents.

Melting: The melting process in glass production involves the melting of raw materials at high temperatures to form a molten glass mixture. Here are the steps in the melting process:

  1. Preparation: The raw materials are mixed in specific proportions and finely ground into a powder.

  2. Mixing: The powders of raw materials are combined and mixed according to the recipe, carefully formulated to achieve the desired properties.

  3. Melting: The powder mixture is melted in melting furnaces operating at high temperatures (around 1500°C). The furnace temperature and the duration of the process are controlled according to the desired quality.

After the challenging and careful melting process, the glass obtains the necessary fluidity for the next stage, shaping.

Shaping: The molten glass is shaped using various methods. One commonly used method is pouring or pressing the molten glass into molds, giving it the shape of a cup.

Cooling: The shaped glass cups are gradually cooled in a controlled manner. This enhances their durability and minimizes internal stresses. It is crucial to ensure slow and controlled cooling to avoid the formation of stresses between the surface and the interior of the glass, which could cause cracks.

Cutting and Polishing: Once cooled, the glass cups may undergo cutting and polishing processes if needed. This step ensures that the cups are prepared for use, with any necessary adjustments made to their edges.

Cleaning and Inspection: At the end of the production process, the glass cups are cleansed of residues and undergo thorough cleaning. They are then subjected to quality control. Each cup is visually inspected to ensure compliance with quality standards.

Packaging and Distribution: Glass cups that pass the quality control are appropriately packaged and prepared for distribution. This step ensures safe transportation and delivery to customers.

Dear reader, this is how glass cups reach our homes. See you next week!