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Maharashtra State BoardSSC (English Medium) 7th Standard

Visit a place where work like powder coating, spray painting is done. Make a note of the information you obtain.

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Question

Visit a place where work like powder coating, spray painting is done. Make a note of the information you obtain.

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Solution

  1. Information about Powder Coating: 
    1. In powder coating, powdered paint is sprayed onto metal objects.

    2. The paint particles are electrically charged, which causes them to be attracted to the surface of the object.

    3. The object is then heated, allowing the paint to melt and adhere firmly to the surface.

    4. This results in a durable, smooth, and corrosion-resistant coating.

  2. Information about Spray Painting:
    1. In spray painting, liquid paint is sprayed onto an object using pressure.

    2. A variety of colors and finishes can be used in this process.

    3. It is relatively simple and cost-effective.

    4. Precision is important, and the air must be kept clean to avoid defects in the paint.

  3. Materials and Equipment Used:
    1. Air compressor

    2. Spray gun

    3. Electrostatic powder coater

    4. Baking oven (for powder coating)

    5. Safety equipment – masks, gloves, goggles

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Chapter 13: Changes – Physical and Chemical - Exercise [Page 85]

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Balbharati General Science Integrated [English] Standard 7 Maharashtra State Board
Chapter 13 Changes – Physical and Chemical
Exercise | Q a | Page 85
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