A tool for reforming a core pattern. A method of reforming a core pattern comprises opening a core reformer tool. The core reformer tool has a first portion and a second portion facing the first portion. The first portion includes a concave member and a first adjustable pin. The second portion includes a convex member and a second adjustable pin. The method includes positioning the core pattern in the core reformer tool and closing the core reformer tool. The method comprises adjusting at least one of the first adjustable pin and the second adjustable pin to alter a surface of the core pattern. The method includes directing cooling air through the core reformer tool to solidify the core pattern and opening the core reformer tool to remove the core pattern.

A core pattern reformer system for adjusting and setting a core pattern for use in casting a gas turbine blade has a first portion having a first internal face with a concave portion. The first portion is coupled to a second portion. The second portion has a second internal face with a convex portion. A plurality of adjustable pins is positioned along the internal faces of the first portion and the second portion. The pins have a height that is adjustable with respect to the internal faces. A locking mechanism is included for securing the first portion to the second portion. The system includes one or more air inlets and one or more air exits and a source of cooling air coupled to the one or more air inlets.

An investment casting method includes providing a stock investment casting core, bending the stock investment casting core to thereby form a production investment casting core that conforms to a design cooling passage shape, and casting an alloy around the production investment casting core to form a cast article.

A mold surface repairing process, the process flow of which is as follows: first sand blastingdefect identificationrepairing weldingcoarse grindingsemi-finishing grindingfinishing grindingsecondary sand blastingmold heatingspray paint. The disclosure provides a combination of automatic equipment, special grinding tools and finishing grinding process, which ensures the quality and efficiency of the mold repair and reduces the labor force.

A method including modifying a known upper denture to form a final upper denture by a series of steps which may include making holes in a gums section made of a first material of the known upper denture, cutting away a palate section, and applying a gold and silicon mixture to make a new palate section, to insert into the holes in the gums section, and to cover the first material. The method may also include modifying a known lower denture to form a final lower denture by a series of steps which may include making holes in a gums section made of a first material of the known lower denture, and applying a gold and silicon mixture to insert into the holes, and to cover the first material. The first material may be nylon.

A core pattern reformer system for adjusting and setting a core pattern for use in casting a gas turbine blade has a first portion having a first internal face with a concave portion. The first portion is coupled to a second portion. The second portion has a second internal face with a convex portion. A plurality of adjustable pins is positioned along the internal faces of the first portion and the second portion. The pins have a height that is adjustable with respect to the internal faces. A locking mechanism is included for securing the first portion to the second portion. The system includes one or more air inlets and one or more air exits and a source of cooling air coupled to the one or more air inlets.

The invention relates to a method for producing a ceramic core (4, 4)and to a core produced by this methodfor preparing the production of a casting having hollow structures which the ceramic core is configured to form, making use of a 3D model of digital geometric co-ordinates of the casting, wherein the method comprises the following steps: a) Producing by means of casting technology at least one first portion (4) of the ceramic core including at least one first joining structure (24) in a surface of the portion; b) Producing by means of casting technology or 3D printing technology at least one second portion (4) of the ceramic core including at least one second joining structure (26) matching the first joining structure, in a surface of the portion, wherein the production by means of casting technology comprises the following steps: i. Unpressurized or low-pressure casting of a ceramic core blank, and specifically with an oversize relative to the core (4, 4) according to the geometric co-ordinates; ii. CNC processing of the core (4, 4), according to the 3D model, in a first CNC processing method; c) joining the at least one first and at least one second portion of the core at the matching joining structures to form the core according to geometric co-ordinates of the casting.

The invention relates to a method for producing a ceramic core (4, 4)and to a core produced by this methodfor preparing the production of a casting having hollow structures which the ceramic core is configured to form, making use of a 3D model of digital geometric co-ordinates of the casting, wherein the method comprises the following steps: a) Producing by means of casting technology at least one first portion (4) of the ceramic core including at least one first joining structure (24) in a surface of the portion; b) Producing by means of casting technology or 3D printing technology at least one second portion (4) of the ceramic core including at least one second joining structure (26) matching the first joining structure, in a surface of the portion, wherein the production by means of casting technology comprises the following steps: i. Unpressurized or low-pressure casting of a ceramic core blank, and specifically with an oversize relative to the core (4, 4) according to the geometric co-ordinates; ii. CNC processing of the core (4, 4), according to the 3D model, in a first CNC processing method; c) joining the at least one first and at least one second portion of the core at the matching joining structures to form the core according to geometric co-ordinates of the casting.

An investment casting method includes providing a stock investment casting core, bending the stock investment casting core to thereby form a production investment casting core that conforms to a design cooling passage shape, and casting an alloy around the production investment casting core to form a cast article.

A method for producing a ceramic core, and such a core, for preparing the production of a casting having hollow structures. The ceramic core configured to form, making use of a 3D model of digital geometric co-ordinates of the casting. The method involves unpressurized or low-pressure casting of a ceramic core blank, and specifically with an oversize relative to the core according to the geometric co-ordinates, and CNC processing of the core in accordance with the 3D model in a first CNC processing method.