ZHENGSHAN TECHNOLOGY

Graphite electrodes may encounter some common defects during production and use, which not only affect their performance and lifespan, but may also lead to a decrease in production efficiency. The following are some common defects of graphite electrodes and their solutions:
crackle
Reason: Poor raw material quality, improper heat treatment, excessive mechanical stress, etc.
Solution: Select high-quality raw materials, optimize the heat treatment process, avoid sharp temperature changes, and ensure that the electrodes are uniformly stressed during use.
High porosity
Reason: Excessive impurities in the raw materials, insufficient sintering, etc.
Solution: Strictly control the quality of raw materials, ensure sufficient sintering process, increase the pressing pressure appropriately to improve the density of electrodes.
Insufficient strength
Reason: Unreasonable raw material ratio, insufficient heat treatment temperature, insufficient pressing pressure, etc.
Solution: Optimize the raw material ratio, increase the heat treatment temperature, increase the pressing pressure to improve the mechanical strength of the electrode.
Low degree of graphitization
Reason: Insufficient heat treatment temperature, insufficient insulation time, etc.
Solution: Increase the heat treatment temperature, extend the insulation time, and ensure sufficient graphitization process.
Surface roughness
Reason: The raw material particles are too large, and the pressing process is uneven.
Solution: Select appropriate raw material particle size, optimize pressing process, and ensure smooth electrode surface.
Size instability
Reason: Inconsistent coefficient of linear expansion of raw materials, improper control of heat treatment process, etc.
Solution: Strictly control the linear expansion coefficient of raw materials, optimize the heat treatment process, and ensure stable electrode size.
low conductivity 
Reason: There are too many impurities in the raw materials, and the degree of graphitization is not enough.
Solution: Strictly control the quality of raw materials, ensure sufficient graphitization process, and improve the conductivity of electrodes.
Poor antioxidant performance
Reason: The ash content in the raw materials is too high, and the heat treatment temperature is not enough.
Solution: Choose low ash raw materials and increase the heat treatment temperature to enhance the antioxidant performance of the electrode.
High sensitivity to thermal shock
Reason: Poor quality of raw materials, improper control of heat treatment process, etc.
Solution: Select high-quality raw materials, optimize heat treatment process, and avoid sharp temperature changes.