The Science Behind Continuous Welded Rail

TLDRContinuous welded rail eliminates the clickety-clack sound of trains and reduces maintenance costs. Rail segments are welded together to restrict thermal expansion and prevent buckling. Railroads use a high neutral temperature to minimize compressive stress. Expansion joints and insulation plates are used at bridges and joints to accommodate temperature changes and electrical circuits. Continuous welded rail provides a smoother and quieter ride.

Key insights

🛤️Continuous welded rail eliminates the clickety-clack sound and reduces maintenance costs

🔥Rail segments are welded together to restrict thermal expansion

😌High neutral temperature prevents rail from experiencing compressive stress

🚂Expansion joints and insulation plates accommodate temperature changes and electrical circuits

🚆Continuous welded rail provides a smoother and quieter ride

Q&A

Why don't trains make the clickety-clack sound anymore?

Most trains now use continuous welded rail, which eliminates the joints that caused the sound.

How does continuous welded rail prevent buckling?

By restricting thermal expansion and using a high neutral temperature, railroads can minimize compressive stress and prevent buckling.

Do all railroads use continuous welded rail?

No, but many modern railroads have switched to continuous welded rail for its benefits in reducing maintenance costs and providing a smoother ride.

What are expansion joints and insulation plates used for?

Expansion joints allow for smooth transitions between rail sections, while insulation plates isolate electrical circuits while maintaining stability.

How does continuous welded rail improve the life of rails and wheels?

By reducing wear and tear from joints and providing a more stable track, continuous welded rail extends the lifespan of rails and wheels.

Timestamped Summary

00:00Continuous welded rail eliminates the clickety-clack sound of trains.

02:36Rail segments are welded together to restrict thermal expansion and reduce maintenance costs.

05:51High neutral temperature prevents rail from experiencing compressive stress.

09:23Expansion joints and insulation plates accommodate temperature changes and electrical circuits.

13:45Continuous welded rail provides a smoother and quieter ride with extended lifespan for rails and wheels.