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How long is the use of molten copper graphite crucible?
Regarding the use time of molten copper graphite crucible, many users who use to smelt copper are concerned about the problem. The outer ring refractory equipment factory below shows that the length of time used for molten copper graphite crucible is related to the material of molten metal, brass. The temperature reached when the bronze melts is not the same, so the better time is not exactly the same. The common problems and cracks of the molten copper graphite crucible are:
1. Description of the problem: Near the bottom of the molten copper graphite crucible (may cause the bottom of the crucible to fall off)
Analysis of the reasons: 1. The temperature rises too fast during the preheating process.
2. Hit the bottom with a hard object such as an iron bar.
3. The thermal expansion of the metal remaining at the bottom of the molten copper graphite crucible can also cause such damage.
4. It may be caused by a hard object hitting the inside of the crucible, such as: throwing the casting material into the crucible
2, the problem description: about the general location
Reason analysis: 1. Place the crucible on the slag or on the improper crucible base.
2. When taking the molten copper graphite crucible, if the clamping position of the jaw is too high and the force is too large, it will cause crucible
Cracks appeared on the surface of the crucible in the lower part of the jaw.
3. The burner control is not correct. The molten copper graphite crucible is partially overheated, some of which are not effectively heated, and the thermal stress causes crucible.
Cracking
3. Description of the problem: When using the dumping type (with mouth), there is a transverse crack in the lower part of the mouth.
Analysis of the reasons: 1, not properly installed.
2. When installing new molten copper graphite crucible, if the refractory soil is tightly squeezed under the nozzle, during use,
When the crucible is cooled and contracted, the force point is concentrated on the mouth of the mouth, and cracks are generated.
3, the molten copper graphite crucible base is not suitable
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