Tool for producing cast components, method for producing said tool, and method for producing cast components

A method for production of a casting mold for a cast component from molten titanium alloy, comprising the steps of:

• providing a component wax model which has geometrical dimensions of a precision-casting component to be produced with the casting mold,
• coating the component wax model with a slurry material consisting essentially of water, yttrium oxide, magnesium oxide and calcium oxide, wherein the slurry material is spread in multiple layers on the component wax model in such a way that the casting mold with at least a two-layer construction is created wherein a first layer of the casting mold forms a mold wall area which comes into contact with the molten titanium alloy, and a second layer of the casting mold forms a stabilization area which backfills the mold wall area,
• drying and hardening the coating for the casting mold, and
• removing the component wax model from the casting mold,
• wherein the slurry material for formation of the second layer which backfills the first layer has less yttrium oxide and is more coarsely grained than the slurry material for formation of the first layer.