ナゼ太郎の部屋

History -until products are completed.-

昔のお話画像
  • How to manufacture melting pot in the past

    When we started to melt glass material in the past, we used melting pot made of clay.
    We put raw materials into the clay pot and melt in heavy oil furnace. It took a whole one day to melt by a few operators.
    It took 6 months to prepare for the clay pot. The clay pot is disposable and one pot is used for one melting.

    昔の坩堝の写真
  • Melting in the past
    It was more 1200℃. The glass in the clay pot was melted like candy. About 1 – 2t glass was melted /one time melting.
    • Melting in the past
      Clay pot unloaded from melting furnace
    • Melting in the past
      Scorching heat Pot moved into annealing furnace
    • Melting in the past
  • *All pictures were taken in 1950s.

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