# Rolling Steel (DD-423)

> Plate rolling bends flat steel into curves and cylinders. In a common three-roll machine, two lower rollers support the plate while an upper roller presses down, and the plate is run back and forth as the pressure increases step by step. Adjusting roller position and pressure sets the curve for plates of different thicknesses. The footage shows a thick plate being rolled.

- Department: Tech
- First published: 2024-12-13
- Last updated: 2024-12-13
- Permalink: https://detailenjoyer.com/case/rolling-steel/
- Author: Marcus Easterling (DetailEnjoyer), The Detail Department

## Quick facts

- **DD-423-F01**: Curves and cylinders. _(Write-up · Exhibit A (Purpose))_
- **DD-423-F02**: Two lower, one upper. _(Write-up · Exhibit B (Three rolls))_

## Write-up

Three rollers can curl a flat steel plate into a tube. The top roller presses a little more on each pass.

1. **Purpose**: Curves and cylinders.
2. **Three rolls**: Two lower, one upper.
3. **Incremental**: Pressure increases each pass.
4. **Adjustment**: Sets the curve.
5. **Thickness**: Various plates.

## Related case files

- [Harder Than Before (DD-242)](https://detailenjoyer.com/case/harder-than-before/): I linked how steel is made

## Reel vs. record

- **Note**: None needed.

## Video: Rolling Steel: Three Rollers Can Curl a Flat Steel Plate Into a Tube

- Duration: 27.1 s · Published: 2024-12-13
- File: https://detailenjoyer.com/assets/videos/DDi8sr9OAQz.mp4

### Transcript

Using rollers to bend steel is a common industrial process called plate rolling or metal rolling, where steel is passed through a series of rollers to form it into curved shapes or cylindrical forms. The process involves three main rollers, two lower rollers that support the steel plate [...] roller that [...] downward pressure to bend [...] incrementally as it moves [...] the machine. By adjusting the pressure and positioning of the rollers, manufacturers can achieve precise bends or curves in steel plates of various thicknesses and lengths. NOW YOU KNOW!

## Questions & answers

**Q: How many rollers?**  
A: Common machine. _(Source: Write-up · Exhibit A (Purpose) · Wikipedia: Rolling (metalworking))_

**Q: Which roller presses?**  
A: Pressure. _(Source: Write-up · Exhibit B (Three rolls) · Wikipedia: Rolling (metalworking))_

**Q: How is the bend made?**  
A: Passes. _(Source: Write-up · Exhibit C (Incremental) · Wikipedia: Rolling (metalworking))_

**Q: What shape results?**  
A: Tubes. _(Source: Write-up · Exhibit D (Adjustment) · Wikipedia: Rolling (metalworking))_

**Q: What controls the curve?**  
A: Adjustment. _(Source: Write-up · Exhibit E (Thickness) · Wikipedia: Rolling (metalworking))_

## Sources

- [Wikipedia: Rolling (metalworking)](https://en.wikipedia.org/wiki/Rolling_(metalworking))

## Cite this case file

Easterling, Marcus. "Rolling Steel." The Detail Department (DetailEnjoyer), case file DD-423, last updated Dec 13, 2024. https://detailenjoyer.com/case/rolling-steel/