ZHENGSHAN TECHNOLOGY

Electrode paste, as an important industrial material, is widely used in various fields such as smelting and welding in electric furnaces. Its quality directly affects smelting efficiency and welding quality, and volatile matter, as one of the key indicators of electrode paste quality, its control is crucial to ensure the overall performance of the electrode paste. This article will explore the control methods of volatile components in electrode paste and their impact on the quality of electrode paste from two aspects.
1、 Control method of volatile matter in electrode paste
1. Raw material selection and ratio optimization
The volatile components of electrode paste mainly come from low molecular weight hydrocarbons in its raw materials. Therefore, when selecting raw materials, priority should be given to materials with low volatile matter content, such as carbon materials with high carbon content, low ash content, low moisture content, low sulfur dioxide, and low volatile matter. Meanwhile, by optimizing the raw material ratio and reducing the proportion of volatile components, the volatile content of electrode paste can be effectively reduced.
2. Production process improvement
The production process plays a key role in controlling the volatile matter of electrode paste. Advanced production processes such as vacuum degassing, heating and drying can effectively remove volatile components from raw materials. In addition, adding an appropriate amount of stabilizer during the production process can also help control the release of volatile matter and improve the stability of electrode paste.
3. Strict quality control
In the production process of electrode paste, a strict quality control system should be established to conduct comprehensive testing of raw materials, semi-finished products, and finished products. By regularly detecting the volatile content of electrode paste and adjusting the production process and formula in a timely manner, we ensure that the quality of electrode paste meets the standard requirements.
2、 The Influence of Volatile Matter in Electrode Paste on Quality
1. Impact on electrode performance
The volatile content of electrode paste directly affects the sintering speed and quality of the electrode. Excessive volatile matter, slow electrode sintering speed, large shrinkage rate after sintering, high porosity, easy oxidation, low strength, and prone to "soft break" or "hard break" accidents. This not only reduces the service life of the electrode, but also increases production costs. On the contrary, if the volatile matter is too low, the electrode sintering speed is fast, but the adhesion is poor, and the contact resistance between the electrode and the controller is high, it is also prone to "hard breakage" and electrode "ignition" accidents.
2. Impact on welding quality
In the field of welding, the volatile matter of electrode paste also has a significant impact on welding quality. Electrode paste with high volatile content will generate more gas during the welding process, which will form bubbles or capillary channels in the weld seam, resulting in excessive gas inclusions in the weld seam and thus reducing the welding quality. In addition, volatile matter can also affect the depth of fusion and the shape of the weld pool, thereby affecting the overall quality of welding.
3. Impact on the environment and health
The volatile components in electrode paste often contain harmful substances such as lead, chromium, etc. These substances are easily released into the air during the volatilization process, posing a threat to the environment and human health. Therefore, controlling the volatile content of electrode paste is also an important measure to protect the environment and ensure the health of workers.
conclusion
In summary, controlling the volatile matter of electrode paste is an important step in ensuring its quality. By optimizing raw material selection, improving production processes, and establishing a strict quality control system, the volatile content of electrode paste can be effectively controlled. Meanwhile, the volatile content of electrode paste has a significant impact on its performance, welding quality, as well as the environment and health. Therefore, in the production and use of electrode paste, it is necessary to attach great importance to the control of volatile matter to ensure the overall quality and effectiveness of the electrode paste.