USEFUL MOLDING MACHINE FOR THE MAKING OF CAST SAND CAST MOLDS AND PROCESS FOR ITS MANUFACTURE.
Номер патента: ES2029000T3
Опубликовано: 16-07-1992
Автор(ы): Walter Dipl.-Ing. Knoss
Принадлежит: Metallwerk Plansee GmbH
Опубликовано: 16-07-1992
Автор(ы): Walter Dipl.-Ing. Knoss
Принадлежит: Metallwerk Plansee GmbH
Реферат: PCT No. PCT/EP88/00942 Sec. 371 Date Aug. 9, 1989 Sec. 102(e) Date Aug. 9, 1989 PCT Filed Oct. 20, 1988 PCT Pub. No. WO89/03736 PCT Pub. Date May 5, 1989.A gas-permeable form tool for manufacturing casting and core moulds from hardenable moulding sand includes a heteroporous, open-pore material. The wall of the tool contains a first fine-pore layer region adjacent to the moulding sand with a thickness of about 0.2-2 mm and a material density of about 75% to 95% of theoretical specific density and a pore diameter of about 50 mu m. The first fine-pore layer comes in contact with a second, large-pore supporting skeleton having a theoretical material density of less than 80% of theoretical specific density and a median pore diameter of more than 100 mu m.
Lost foam and sand casting with polylactic acid-based foam articles
Номер патента: US20240189888A1. Автор: Saumitra Bhargava. Владелец: Lifoam Industries LLC. Дата публикации: 2024-06-13.