Recarburizer (C) is a kind of to increase carbon products, have been used in multiple industry, steel join carburant can effectively
improve the hardness and wear resistance of steel, but if too much of the improper use of the carbon steel, at the same time will
affect the quality of steel, thus summarizes carburant in which problems should be paid attention to when using or very be necessary,
by sorting the use effect of carburant can be effectively promoted.
Note one, the addition time of the recarburizer can not be ignored
If the addition time of recarburizer is too early, it is easy to make it adhere to near the bottom of the furnace, and the recarburizer attached to
the furnace wall is not easy to be dissolved into iron, on the contrary, the addition time is too late, it lost the time of increasing carbon,
resulting in melting, heating time delay. This not only extends the time of chemical composition analysis and adjustment, but also may
cause the harm of ferroalloy caused by excessive heating. Therefore, in the process of adding metal charge, adding carbon agent bit by bit will be better.
If the amount of one addition is too large, it can be combined with the overheating operation of molten iron adopted in the induction furnace
to ensure that the absorption time of the recarburizer in molten iron is 10Min. On the one hand, electromagnetic stirring is used to make
the carbon extender fully diffused and absorbed, so as to guarantee the absorption effect. On the other hand, it can reduce the amount of nitrogen in the carburizer.
Note two, join method improvement
Don't join in one time, join in batches. Finally melted part, put a part (about a package) of molten iron into the bag, and then back to the furnace to add recarburizer 1-2 times, and then slag, add alloy. There are the following aspects to pay attention to:
1. Recarburizer is difficult to absorb (without calcination)
2. More ash and uneven particle distribution of recarburizer
3. Joining too late
4. The joining method is not correct, so it adopts hierarchical joining. Avoid iron liquid mirror too much slag when added
Try not to use too much rusty material.