How is a case of kettle made?

1. Raw Material Preparation: The first step involves preparing the raw material, usually sheets of stainless steel or aluminum. The sheets are cut into desired shapes and sizes based on the design of the kettle.

2. Bending and Forming: The cut sheets are then bent and shaped using specialized machines. This process creates the basic form of the kettle's case.

3. Welding: The bent and shaped pieces are welded together to create the body of the kettle case. Spot welding or TIG (Tungsten Inert Gas) welding techniques are commonly used to join the metal parts precisely.

4. Grinding and Polishing: After welding, any rough edges or imperfections are removed by grinding and polishing. This step ensures a smooth and aesthetically pleasing finish for the kettle case.

5. Surface Treatment: Depending on the desired look, the metal case may undergo various surface treatments such as brushing, sandblasting, or coating. These treatments enhance the appearance and durability of the case.

6. Handle Attachment: The kettle's handle is attached to the case during this stage. Handles are usually made of heat-resistant materials like plastic or bakelite to prevent heat transfer during use.

7. Assembly: The completed case is assembled with other components of the kettle, including the heating element, power cord, and control panel.

8. Testing: The assembled kettle undergoes rigorous testing to ensure its safety and functionality. This may involve testing for leaks, electrical safety, and proper heating performance.

9. Packaging and Shipping: Once the kettle passes all tests and meets quality standards, it is packaged for shipping to retailers or customers.

These steps provide a general overview of how a metal case for a kettle is manufactured. However, specific processes and techniques may vary depending on the design and materials used by different manufacturers.