Fluid Flim Mechanism - Water - Engineering Chemistry 1

TL;DR

This video discusses the differences between fluid film lubrication and extreme pressure lubrication and their applications in machines.

Transcript

click the Bell icon to get latest videos from akira hello friends in today's topic we are going to study a comparison between the fluid film lubrication and the extreme pressure lubrication both of these lubrication are the mechanisms in which we use to lubricate the machine parts now there are various machine parts we need lubrication for and we c... Read More

Key Insights

• 🎥 Fluid film lubrication involves applying a film of lubricating oil to prevent friction between machine parts.
• 🚄 Extreme pressure lubrication is used in machines with high load and speed, where lubricants are sprayed onto the parts.
• 🖐️ Viscosity and viscosity index play a crucial role in determining the effectiveness of lubricants.
• 🥳 The coefficient of friction is significantly lower in lubricated parts compared to unlubricated parts.
• ❓ Lubricants with additives can enhance specific properties like stickiness or oiliness.
• 🗯️ Temperature affects the viscosity of lubricants, making it crucial to choose the right lubricant for specific temperature conditions.
• ❓ Seasonal impact does not affect lubricants' performance since they rely on chemical properties rather than physical properties.

Questions & Answers

Q: What is fluid film lubrication?

Fluid film lubrication is a mechanism where a film of lubricating oil or grease is applied to machine parts to reduce friction and prevent direct contact between surfaces.

Q: When is extreme pressure lubrication used?

Extreme pressure lubrication is used in machines with high load and speed, where lubricants are sprayed onto the parts instead of forming a film. It is suitable for heavy-duty applications.

Q: How does the coefficient of friction differ between lubricated and unlubricated parts?

The coefficient of friction for unlubricated parts ranges from 0.5 to 1.5, while lubricated parts have a coefficient of friction of 0.001 to 0.03, significantly reducing friction.

Q: Why is viscosity important in lubricants?

Viscosity indicates the thickness and density of lubricants. In fluid film lubrication, high viscosity lubricants are used to form a stable film, while extreme pressure lubrication requires lubricants with adequate viscosity and high viscosity index to withstand high temperatures and pressures.

Summary & Key Takeaways

• Fluid film lubrication, also known as hydrodynamic lubrication, involves using a film of lubricating oil to prevent friction between machine parts.

• Extreme pressure lubrication is used in machines under high load and speed, where lubricants are sprayed onto the parts instead of forming a film.

• The coefficient of friction is significantly lower in lubricated parts compared to unlubricated parts.