摘要:
Methods for hardening die-cast parts are known, in which firstly the die-cast part (16) is poured into a casting mould (2) having at least one fixed and one movable mould half (4, 6), then the casting mould (2) is opened by moving out the movable mould half (6), the die-cast part (16) in the movable mould half (6) is quenched, then the die-cast part (16) is ejected from the movable mould half (6) and finally, the die-cast part (16) is aged artificially. To increase the strength, according to the invention, spray tools (14) of a spraying device (8) are inserted between the mould halves (4, 6) immediately after or while the casting mould (2) is opened, with which spray tools a coolant is applied to the die-cast part (16) to quench same.
摘要:
Die Erfindung betrifft eine Vorrichtung und einen Sand- und/oder Salzkern (1, 1') zum Herstellen eines Zylinderkurbelgehäuses (3) in Closed-Deck-Bauweise, wobei die Vorrichtung aus stationären und beweglichen Formteilen (2, 2') gebildet ist, und der Sandkern (1, 1') formschlüssig in mindestens einem Formteil (2, 2') enthalten ist und der Sandkern (1, 1') mindestens eine Öffnung aufweist, in die ein Haltevorsprung (5 bis 12) des haltenden Formteils (2, 2') hineinreicht, so dass der Sandkern (1, 1') in der Vorrichtung fixiert ist und der Sandkern (1, 1') einen Wassermantelkern (1, 1') des Zylinderkurbelgehäuses (3) bildet, wobei der Haltevorsprung (5 bis 12) mindestens bereichsweise einen Teil einer Außenkontur des Wassermantelkerns (1, 1') bildet.
摘要:
Die vorliegende Erfindung betrifft wasserlösliche Salzkerne für Gießereizwecke, welche aus einem Gemisch aus im Wesentlichen wasserlöslichen Salzen und einem Bindemittel bestehen, wobei das Gemisch zusätzlich eine Protein-Kombination mit anorganischen Bestandteilen enthält.
摘要:
The invention relates to a method and to a spraying device for applying a surface treatment agent, wherein the steps of cooling the casting mold and applying a release agent can be performed in only one method step. For this purpose, according to the invention, the spraying device comprises a liquid pressure pump between a surface treatment agent mixing station and a spraying apparatus, wherein the pressure of the surface treatment agent is increased to at least 13 bar, preferably 24 bar, by means of the liquid pressure pump. Thus the Leidenfrost effect can be avoided, because outlet speeds are achieved that lead to the vapor buffer being penetrated, and also for hot casting molds, to a cooling effect and wetting with surface treatment agent being achieved.
摘要:
The invention relates to water-soluble salt cores which are produced by compacting a mixture of water-soluble salts and a binding agent, under pressure and subsequently subjecting them to heat-treatment. The binding agent is an inorganic phosphate or a mixture of inorganic phosphates having a proportion of between 0.5 and 10 wt. % of mixture.