coater brake linings Interview Questions and Answers

100 Interview Questions and Answers: Coater Brake Linings
  1. What is the primary function of brake linings?

    • Answer: Brake linings provide the friction necessary to slow or stop a vehicle by creating resistance against the brake drum or rotor.
  2. Describe the coating process for brake linings.

    • Answer: The coating process typically involves applying a friction material to a backing plate. This can be done through various methods like spraying, rolling, or dipping, followed by curing to achieve the desired bonding and properties.
  3. What are the key materials used in brake lining composition?

    • Answer: Common materials include friction modifiers (e.g., asbestos substitutes, metallic particles, resins), binders (e.g., phenolic resins, rubber), and fillers (e.g., barite, graphite).
  4. Explain the importance of friction coefficient in brake linings.

    • Answer: Friction coefficient determines the braking force generated. A higher coefficient means more stopping power, but it can also lead to increased wear and noise.
  5. What are the different types of brake linings available?

    • Answer: Types vary based on composition and application, including non-asbestos organic (NAO), semi-metallic, low-metallic, and ceramic.
  6. How does temperature affect brake lining performance?

    • Answer: High temperatures can cause brake fade (reduced braking effectiveness) and material degradation. Low temperatures can reduce friction initially.
  7. What is brake fade and how is it avoided?

    • Answer: Brake fade is a reduction in braking effectiveness due to excessive heat. It's avoided through proper material selection, adequate ventilation, and effective heat dissipation design.
  8. What are the quality control measures implemented during the brake lining coating process?

    • Answer: Quality control involves regular checks on material consistency, coating thickness, adhesion strength, and friction coefficient testing at various stages.
  9. Explain the role of binders in brake lining formulations.

    • Answer: Binders hold the friction material components together, providing cohesion and structural integrity to the lining.

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