JPS6119306Y2 - - Google Patents

Info

Publication number

JPS6119306Y2

JPS6119306Y2 JP6865180U JP6865180U JPS6119306Y2 JP S6119306 Y2 JPS6119306 Y2 JP S6119306Y2 JP 6865180 U JP6865180 U JP 6865180U JP 6865180 U JP6865180 U JP 6865180U JP S6119306 Y2 JPS6119306 Y2 JP S6119306Y2

Authority

JP

Japan

Prior art keywords

cutting

hole

oxygen

recess

preheating

Prior art date

1980-05-19

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Expired

Links

• Espacenet
• Global Dossier
• Discuss

• QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 48
• 239000001301 oxygen Substances 0.000 claims description 48
• 229910052760 oxygen Inorganic materials 0.000 claims description 48
• 239000007789 gas Substances 0.000 claims description 30
• 238000010438 heat treatment Methods 0.000 description 22
• 230000000694 effects Effects 0.000 description 11
• 229910000831 Steel Inorganic materials 0.000 description 6
• 239000000463 material Substances 0.000 description 6
• 239000010959 steel Substances 0.000 description 6
• 238000002485 combustion reaction Methods 0.000 description 5
• 239000002737 fuel gas Substances 0.000 description 3
• 238000007664 blowing Methods 0.000 description 1
• 238000002474 experimental method Methods 0.000 description 1
• 238000004519 manufacturing process Methods 0.000 description 1
• 238000000034 method Methods 0.000 description 1
• 238000011056 performance test Methods 0.000 description 1
• 230000001737 promoting effect Effects 0.000 description 1
• 125000006850 spacer group Chemical group 0.000 description 1
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1