The Blackening Treatment of Steel Plate in a N2-H2-H2O Atmosphere
碩士 === 大同工學院 === 材料工程學系 === 84 === The blackening treatment of steel shadow mask of color monitor for reducing thermal expansion by improving the thermal emissivity has beentraditionally conducted in exothermic atmosphere (DX-gas), how...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
1996
|
| Online Access: | http://ndltd.ncl.edu.tw/handle/26858078731081533386 |
| Summary: | 碩士 === 大同工學院 === 材料工程學系 === 84 === The blackening treatment of steel shadow mask of color
monitor for reducing thermal expansion by improving the thermal
emissivity has beentraditionally conducted in exothermic
atmosphere (DX-gas), however, thecharacteristics of the
atmosphere are inevitably varied in different temperature zones
of the continuous furnace. It is to study an alterna-tive
nitrogen-based atmosphere with 6-8% of hydrogen and water
additionfor this purpose. And the results showed that the
thermal emissivity of the cold rolled carbon steel sheet could
be increased from 0.3 to higherthan 0.8 with single phase of
magnetite without apparent degradation of formability at the
temperature of 500'C with H2O/H2=0.3-0.6 for 1-2 hr.
|
|---|