Serial How To Make The Things: "How to make The Car" Segment 3 Of 4

Summary

This video showcases the advanced automotive painting process used after welding. It highlights key stages such as pre-treatment, where vehicles are cleaned and coated for rust protection, and the use of robotic systems for applying primer, base coat, and clear coat. The process includes dipping for anti-corrosion and sealing for waterproofing, ensuring both durability and aesthetic appeal. The final product is a vehicle body that is resistant to rust and leaks, with a polished finish available in both metallic and solid colors.

Takeaways

• 😀 The cover room's purpose is to capture dust, preventing it from sticking to people when they enter the space.
• 😀 The painting process used by Daewoo Motor is an advanced method called 'trew system,' which utilizes robots for applying primer, base coat, and clear coat.
• 😀 The painting process occurs after the welding stage, with the body still being made of raw metal requiring rust protection.
• 😀 The body undergoes a pre-treatment process, which includes five key steps: pre-washing, cleaning, surface conditioning, phosphating, and anti-rust coating.
• 😀 After the pre-treatment, an anti-rust primer is applied to the body to enhance corrosion resistance.
• 😀 The body is dipped into a solution for corrosion protection, then baked in an oven to ensure durability, with the primer turning the body gray.
• 😀 Sealant is applied to the body joints to prevent water leakage and avoid rust formation at these critical points.
• 😀 The body is painted in various colors, including both metallic and solid finishes, after sealing.
• 😀 The painting process enhances both the vehicle's aesthetic appeal and its long-term durability.
• 😀 The robotic system ensures precision in applying the primer, base coat, and clear coat, improving efficiency and consistency in the process.
• 😀 The combination of pre-treatment and advanced sealing ensures the vehicle's body remains rust-resistant and water-tight throughout its lifespan.

Q & A

What is the main objective of the painting process described in the transcript?

The main objective of the painting process is to prevent dust from sticking to the car body, ensuring cleanliness for people entering the area and for the quality of the paint application.

What type of system is used in the new painting process?

The new painting process uses a robotic system called the 'trew systemw,' which automates the application of the primer, base coat, and clear coat.

What is the first step in the painting process after welding?

The first step after welding is the pre-treatment process, which involves five stages: pre-washing, cleaning, surface conditioning, phosphating, and applying a protective phosphate layer for rust resistance.

How does the phosphating process contribute to the painting process?

Phosphating applies a protective layer to the surface of the car body, which helps to prevent rust and provides a better surface for paint adhesion.

What is the purpose of the base coating applied after the pre-treatment?

The base coating is applied to provide anti-rust protection, ensuring the car body is resistant to corrosion.

How is the car body protected from rust after the painting process?

The car body is dipped into a tank during the cathodic process, where it receives an anti-rust primer that protects the metal from corrosion.

What role does sealing play in the painting process?

Sealing ensures that the body joints are protected from water, preventing leaks and minimizing the risk of rust forming in those areas.

What is the significance of the color options available after the sealing process?

After sealing, the body is painted in various colors, including metallic and solid finishes, which contribute to the vehicle’s aesthetics while also providing additional protective layers.

How does the use of robots improve the painting process?

Robots improve the painting process by providing precise and consistent application of the primer, base coat, and clear coat, ensuring higher quality and efficiency in the process.

What are the benefits of this new painting process over conventional methods?

The new robotic painting process offers better precision, consistency, and efficiency, enhancing the durability of the car's body by improving rust protection and sealant application compared to conventional methods.