The first domestic guide rod laser grinding equipment was successfully developed in Qineng Aluminum Aluminum Branch

After nearly 170 days of unremitting efforts, Chongqing Qineng Electric Aluminum Co., Ltd. Aluminum Branch and Chongqing Kaiwod Photoelectric Automation Equipment Co., Ltd. jointly developed the first "new anode aluminum guide rod laser cleaning system" in China The system integrates photoelectric positioning and laser automatic tracking and cleaning, and all operations can realize unattended automatic cleaning. It is an efficient and environmentally friendly intelligent device.

The anode guide rod is the connecting conductor between the anode block and the horizontal busbar of the electrolytic cell. Its connection resistance will directly affect the energy consumption of electrolytic production and the safety of the electrolytic cell. This connection resistance not only consumes a large amount of electrical energy, but also affects the safe production of electrolysis due to heat, so how to reduce the pressure drop of the anode guide rod has always been a key to the production of aluminum electrolysis. At present, the surface of the aluminum guide rod is generally treated by mechanical grinding in China, but the aluminum guide rod base material is greatly abraded by mechanical grinding. After a long period of grinding, the aluminum guide rod cross-sectional size becomes smaller (the aluminum guide rod is polished and thinner), the actual effect Not ideal.

Chongqing Qineng Electric Aluminum Co., Ltd. Aluminum Branch conducted a careful analysis of the factors affecting the pressure drop of the guide rod, and found out the main influencing factor-the smoothness of the guide rod. In response to the problem of how to improve the smoothness of the guide rod and reduce the pressure drop of the guide rod, the Aluminum Branch organized several investigations and tests. After many special studies, the brand-new laser cleaning method was finally selected from many schemes.

Laser cleaning has the advantages of low power, no chemical agent in the cleaning process, environmental protection and no pollution in the production process, and low production cost. After laser cleaning, more than 90% of the surface of the aluminum guide rod shows the true color of the metal. The polishing effect is good, the polishing time is short (60 groups / hour), the equipment reliability is high, and the cross-sectional size of the guide rod substrate has no effect. Through the comprehensive test of the upper tank (electrolysis cell), it was found that the contact pressure drop between the anode aluminum guide rod and the anode horizontal bus bar after laser cleaning was reduced by 4-7mv on average. It is expected that the annual cost of electrolytic DC power consumption will be reduced by about 1.2 million yuan.

At present, the laser polishing system has been put into trial production, and the actual use effect is good. The relevant technical patents are in this declaration. The successful development of this system has improved the level of intelligent equipment of Chongqing Qineng Electric Aluminum Co., Ltd., and has the significance of demonstration and guidance in the same industry.