The upcasting continuous casting machine is a key equipment in the upcasting process. The upcasting rolling steel is achieved through intermittent upward pulling, with each action's stroke and pitch, the start/stop ratio of the intermittent pulling, the number of pulls, and the pitch all affecting the quality of the casting rod. The adoption of a servo motor pulling system not only meets the high-frequency intermittent pulling requirements but also allows the pitch to be freely adjusted according to different casting rod diameters without deviation, ensuring stable operation.
The crystallizer is a crucial component of the upward continuous casting machine, playing a decisive role in the quality of the billet and the upward casting rate. Particularly, the design of the once-cooling zone, the selection of materials, and the dimensional accuracy directly affect the heat conduction and crystallization rate. The size of the gap between the copper tube inner wall of the crystallizer's secondary cooling zone and the billet greatly influences the refrigeration efficiency of the billet.
The simplicity of the process in the electro-controlled upward drawing steel rolling system is one of its features. However, the requirement for process operation is very strict. Parameters such as the copper liquid temperature, fluctuation in liquid level, insertion depth of the crystallizer into the copper liquid, the diameter and frequency of the pull, as well as the pressure, flow, and temperature of the cooling water must all be controlled within specific ranges. Fortunately, the upward continuous casting machine is equipped with a relatively comprehensive control and reporting system.
During the operation of the continuous casting machine, operators should pay attention to the following matters: maintain the daily maintenance of the crystallizer on time. Clean and remove scale to ensure the waterways are clear; electrolytic copper must be clean before being introduced into the furnace, and it should be preheated and dried in the furnace first to remove moisture and other impurities. Electrolytic copper that does not meet the process specifications and waste copper rod wires are strictly prohibited from entering the furnace. The feeding must be balanced, with small and frequent additions to maintain stable furnace temperature and a steady copper liquid level.
Coins or heavy scrap copper material must not float on the copper melt surface and should be promptly hammered into the melt. It is necessary to roast the charcoal before it is added to the furnace, and the charcoal cover must be tight and consistently maintained to prevent the copper melt from absorbing oxygen and hydrogen from the air; when removing slag and replacing charcoal, it is essential to operate meticulously according to the process standards to prevent the copper melt from being exposed to the air and breathing.
Ensure timely removal of slag from the furnace walls to prevent harmful substances from re-entering the copper melt; continuously monitor the quality of copper rods, the level of copper melt, the condition of charcoal cover, and changes in various process indicators. In case of abnormal copper rod quality, immediate measures must be taken to address the issue.
