Low-hydrogen alkaline welding rod for 25Cr2Ni4MoV alloy steel manual arc welding
A manual electric arc, alkaline electrode technology, applied in welding medium, welding equipment, metal processing equipment and other directions, can solve the problem of lack of welding rod, etc., and achieve the effect of good molten pool fluidity, good low temperature toughness, and high weld strength.
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Embodiment 1
[0032] Step 1, making alloy steel welding core
[0033]The preparation weight ratio is 1:1 for professional pure iron and industrial pure iron. Ores containing C, Si, Mo, Cr are placed around and on the upper part of the magnesia crucible in the induction furnace, Ni powder is placed in the middle of the crucible, Re, Mn, B put into the tray. The carbon in the crucible acts as a deoxidizer. Put the pure iron and the contents in the crucible together into the induction furnace for smelting. When the pure iron is completely melted, the temperature of the molten alloy steel reaches 1540°C, and when the molten steel is calm, turn off the power to cool and exhaust for 15 minutes; then turn on the power for refining, and after 20 minutes of refining , When the temperature of the alloy steel liquid drops to 1550°C, add Ti powder, and then tap the steel when the temperature continues to drop to the tapping temperature (the tapping temperature is 1540°C). Fill the furnace with argon ...
Embodiment 2
[0043] Step 1, making alloy steel welding core:
[0044] The preparation weight ratio is 1:1 for professional pure iron and industrial pure iron. Ores containing C, Si, Mo, Cr are placed around and on the upper part of the magnesia crucible in the induction furnace, Ni powder is placed in the middle of the crucible, Re, Mn, B put into the tray. The carbon in the crucible acts as a deoxidizer. Put the pure iron and the contents in the crucible together into the induction furnace for smelting. When the pure iron is completely melted, the temperature of the molten alloy steel reaches 1540°C, and when the molten steel is calm, turn off the power to cool and exhaust for 15 minutes; then turn on the power for refining, and after 20 minutes of refining , When the temperature of the alloy steel liquid drops to 1550°C, add Ti powder, and then tap the steel when the temperature continues to drop to the tapping temperature (the tapping temperature is 1540°C). Fill the furnace with argo...
Embodiment 3
[0053] Step 1, making alloy steel welding core:
[0054] Prepare professional pure iron and industrial pure iron with a weight ratio of 1:1, put ores containing C, Si, Mo, Cr around and on the upper part of the magnesia crucible in the induction furnace, Ni powder in the middle of the crucible, Re, Mn, B Put in the pan. The carbon in the crucible acts as a deoxidizer. Put the pure iron and the contents in the crucible together into the induction furnace for smelting. When the pure iron is completely melted, the temperature of the molten alloy steel reaches 1540°C, and when the molten steel is calm, turn off the power to cool and exhaust for 15 minutes; then turn on the power for refining, and after 20 minutes of refining , When the temperature of the alloy steel liquid drops to 1550°C, add Ti powder, and then tap the steel when the temperature continues to drop to the tapping temperature (the tapping temperature is 1540°C). Fill the furnace with argon 5 minutes before tappin...
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