Industry is seeing a trend in the number of new lift magnets being manufactured. There has been a reduction in the amount of weld and steel in many scrap handling lift magnets. The case walls and outer poles have been thinned and accept less punishment than in the past. Some of this is due to the use of lighter-duty cranes, and the need to reduce the weight of the magnets and some is due to cost cutting and attempts at greater profitability. These trends have made many of these older lift magnets less repairable than in the past. That being said, many of the magnets are so badly damaged, they are deemed uneconomical to repair and are replaced with new, rebuilt or used magnets.
City Machine Technologies, Inc. began to bring its own unique line of newly designed scrap handling magnets to market. Our design supplies the customer with a larger pole shoe that should last longer, a heavy-duty terminal box to withstand severe punishment and to better protect the lead connections and an overall case design, which should be reusable instead of having to be replaced. Also, the bottom plate is easily removable (not integrated into the case assembly) and offers the potential of being straightened and reused, if it is deformed. This can be done without machining it out of a case assembly and rewelding the assembly back together before final assembly of the entire magnet. The removal of the plate from the case assembly often renders the case uneconomical to repair, which in turn, leads to increased repair costs or scrapping out the magnet.
CMT also currently manufactures and sells a 58” DCBH (deep copper ball handler). This lift magnet is copper wound. It exhibits more lift and runs cooler than similar units on the market. A cooler running lift magnet retains more lift than a hotter magnet, so more material will be processed in comparable time frames. Cooler also means the insulation system inside the magnet is less stressed and will last longer.