At METEC, Dango & Dienenthal (D&D) will present the new vertical ingot ejector that pushes ingots out of the mold in a controlled manner. These features enable the machine to significantly increase both process reliability and occupational safety. When casting ingots in steel mills, stripping the permanent molds used to be highly hazardous for the personnel and the machines: The ingot molds had to be swung against massive objects with the crane, for example, until the ingots came loose. In addition to hazardous working conditions and barely calculable time expenditure, damaged ingot molds, a high mechanical load on the cranes and correspondingly high wear were a daily occurrence.
Having already supplied horizontal block pushers for horizontal ingot molds, D&D will be presenting the vertical variant for upright ingot molds for the first time at METEC – for both open-bottom and sack ingot molds. The new system reduces the time required for stripping, takes up little space and feeds the ingot to the next process step in a controlled manner. It also makes the process plannable, as stripping only takes a few minutes at a time.
The ingot mold is placed on a support plate and clamped by hydraulic hold-down devices. To release the ingots from the various mold shapes, either the mold cover is removed and the ingot is gripped directly by the crane, or it is pressed out of the mold by a mandrel.
For Boris Marcukaitis, Sales Engineer at D&D, occupational safety is a particularly important aspect: “One of the highest safety levels applies to crane systems, which is why “traditional ingot mold unloading” has long been a major headache for many companies. With the new block pusher, ingot molds no longer swing more or less uncontrollably through the hall.”
Dango & Dienenthal at METEC 2023 Düsseldorf, Germany, June 12–16, 2023: Hall1 / Booth C85