puddling process
E2236
The puddling process was an early industrial method for converting pig iron into wrought iron in a reverberatory furnace, widely used before being superseded by more efficient steelmaking techniques.
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
industrial process
→
ironmaking process → metallurgical process → |
| basedOn |
oxidation of impurities in molten iron
→
|
| characteristicFeature |
separation of fuel from metal by furnace roof
→
stirring of molten metal by puddler → use of oxidizing atmosphere in furnace → |
| developedIn |
18th century
→
19th century → |
| energySource |
coal
→
coke → |
| field |
history of technology
→
metallurgy → |
| followedByStep |
rolling into bars
→
shingling → |
| hasLimitation |
difficult working conditions due to heat
→
labor-intensive → low productivity compared to later steelmaking → |
| historicalPeriodOfUse |
Industrial Revolution
→
|
| mainlyUsedIn |
Europe
→
United Kingdom → United States → |
| metalOutputForm |
bloom of wrought iron
→
puddle ball → |
| produces |
wrought iron
→
|
| productMaterialType |
fibrous wrought iron
→
low-carbon iron → |
| relatedTo |
Bessemer converter
→
finery forge → open-hearth furnace → |
| removes |
carbon from pig iron
→
manganese from pig iron → other impurities from pig iron → silicon from pig iron → |
| replacedBy |
Bessemer process
→
modern steelmaking → open-hearth process → |
| requires |
skilled manual labor
→
|
| significance |
enabled large-scale production of wrought iron
→
important for construction industry → important for development of railways → reduced dependence on charcoal in ironmaking → |
| status |
obsolete
→
|
| usedBefore |
widespread adoption of steelmaking
→
|
| usedFor |
converting pig iron into wrought iron
→
|
| uses |
reverberatory furnace
→
|
Referenced by (1)
| Subject (surface form when different) | Predicate |
|---|---|
|
Bessemer process
→
|
advantageOver |