CAST IRON CASTING MOLDS MANUFACTURING METHOD Russian patent published in 2006 - IPC C21D1/09 

FIELD: machine engineering, possibly manufacture of cast-iron molds for producing glass containers by casting process.

SUBSTANCE: method for making cast-iron casting molds for producing glass containers comprises steps of forming cast iron billets of two mold halves; mechanically working their edges and inner working surfaces of mold halves; finishing them by grinding and polishing; strengthening working edges of mold halves. Novelty is strengthening of working edges of mold halves after finishing edges and inner working surfaces of mold halves due to acting upon edge and near-edge zone by means of multi-beam laser irradiation. Non-uniformity degree of irradiation intensity in irradiated zone is no more than 10 % at asymmetrical arrangement of focusing spot of laser irradiation relative to working edge of mold half and its shifting in direction opposite to mold half cavity.

EFFECT: increased useful life period of casting molds due to improved wear resistance of their working edges, lowered labor consumption for making molds.

4 cl, 3 dwg, 1 ex