摘要:
Solid particulate materials are bonded together to form a foundry mold or core byI. forming a mixture of the particles and an anaerobically-curing adhesive and moulding the mixture to the desired shape, andIi. causing the adhesive to cure and bond the particles together by maintaining the shaped article in a substantially oxygen-free environment.The anaerobic adhesive may comprise, as monomer, an ester of an acrylic acid, with a hydroperoxide or peroxide as a polymerization catalyst, and the oxygen-free environment may be produced by displacing air with nitrogen or other inert gas or vapor.The method described is particularly suited for the production of foundry moulds and cores from sand or other particulate material.