CASTING INNOVATIONS
Conveyor System Cools High Volume of Castings Tisamatic, San Luis Potosí,
Mexico, is a green sand facility that produces a wide range of cast- ings for the automotive and home appliance sector. A part of Grupo Industrial Saltillo, Saltillo, Mexico, the ductile and gray iron caster opened two new production lines in September 2013. Green sand facilities often face difficulties cooling castings quickly and efficiently on the molding line due to high production volume. Instead of relying on rotary, vibra- tory or carousel cooling systems, Tisamatic installed a Magaldi Cast- ing Cooler (MCC) conveyor-based system from Magaldi Industrie S.r.l., Salerno, Italy. Te MCC system cools castings
as they move to the shotblasting machine, while it also transports scrap after degating. Magaldi— represented in North America by Equipment Merchants Inter- national, Cleveland—installed a
system at Tisamatic that includes two parallel conveyor systems to cool and transport castings and sprues. Te MCC system, along with the Magaldi Integrated Supervision System (MISS), a supervising/moni- toring software module, optimizes cooling performance and minimizes energy consumption. Te Tisamatic system is able to cool as much as 16 tons of castings per hour from 1,202F (650C) to below 158F (70C). Te two MCCs are fed by a short
vibrating feeder that correctly dis- tributes and places the castings. Both lines are equipped with 114.8-ft. (35-m) forced cooling tunnels that are held under negative pressure. Te tunnel’s airflow is sucked through the central duct, forcing air to enter at the MCC’s open extremities. After passing through the closed area, the cooled castings can be degated by operators along the uncovered remaining length. Sprues, risers and gating can be sorted and delivered to two parallel con-
veyors via lateral slides. Te Magaldi Superbelt conveyor’s low speed and special configuration provide flat work surfaces so workers can handle cold castings and easily sort finished cast- ings from scrap. Luis Carlos Cisneros Rincon, proj-
ect leader, Grupo Industrial Saltillo, reported the Magaldi system is func- tioning according to expectations and the facility has not had any problems. Te MCC provided Tisamatic with a number of advantages compared to a traditional vibratory cooler: • Dependable, controlled cooling • Reduced dust and noise. • Decreased energy consumption. • Inclinations up to 35 degrees. • Platform for cooling and degating on the same conveyor. Te same MCC delivers the cooled
castings to the shotblasting machine while the sprues are sent through four conveyors to their dedicated contain- ers. Te MISS interface, with optical pyrometers placed along the cooling
50 | MODERN CASTING September 2014
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