# US 9,517,504 B2 · Article with grouped grain patterns

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,517,504 B2
- Document ID: US9517504B2
- Status: Granted
- Kind: B2
- Application number: 14/499,367
- Filed: 2014-09-29
- Published: 2015-01-15
- Granted: 2016-12-13
- Earliest claimed: 2012-07-27
- Assignees: United Technologies Corporation
- Applicants: United Technologies Corporation
- Inventors: Mark White
- Web page: https://patentgrep.com/patent/US9517504B2

## CPC

- B22D 25/06: by its physical properties (B22D27/00 takes precedence)
- B22C 9/04: Use of lost patterns
- B22C 9/12: Treating moulds or cores, e.g. drying, hardening
- B22C 19/04: Controlling devices specially designed for moulding machines
- B22D 27/045: {Directionally solidified castings}
- B32B 15/01: all layers being exclusively metallic {(making layered metal workpieces by pressure cladding B23K20/22; making coatings with a metallic material characterised by its composition C23C30/00)}
- C30B 21/02: by normal casting or gradient freezing
- Y10T 428/12639: Adjacent, identical composition, components
- B22D: CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES (shaping of plastics or substances in a plastic state B29C; metallurgical processing, selection of substances to be added to metal C21, C22)
- B22C: FOUNDRY MOULDING (moulding refractory materials in general B28B)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C30B: SINGLE-CRYSTAL GROWTH (by using ultra-high pressure, e.g. for the formation of diamonds, B01J3/06); UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL (zone-refining of metals or alloys C22B); PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE (casting of metals, casting of other substances by the same processes or devices B22D; working of plastics B29; modifying the physical structure of metals or alloys C21D, C22F); SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE (for producing semiconductor devices or parts thereof H10); APPARATUS THEREFOR
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method for forming an article includes providing a mold and casting a metal material within the mold so that a part is produced which has a first portion having a first grain pattern and a second portion having a second grain pattern different from said first grain pattern.

## Claims

### Claim 1

A method for forming an article comprising:
providing a mold;
casting a metal material within said mold so that a part is produced which has a first portion having a first grain pattern and a second portion having a second grain pattern different from said first grain pattern;
forming said mold using a wax pattern and dipping the wax pattern into a ceramic material;
applying a cobalt containing material to a surface of said wax pattern prior to said dipping step, said cobalt containing material consisting of a 7% cobalt aluminate.

### Claim 2 (depends on 1)

The method according to claim 1, further comprising placing a shield around said mold.

### Claim 3 (depends on 2)

The method according to claim 2, wherein said placing step comprises placing a shield which extends from a first region of the mold where a root attachment section will be formed to a second region of the mold where a platform will be formed.

### Claim 4 (depends on 2)

The method according to claim 2, further comprising:
providing a heater and a controller for said heater;
programming said controller to have a grouped grain program profile; and
powering said heater after said metal material in molten form has been placed into said mold to form said part having said first grain pattern and said second grain pattern.

### Claim 5 (depends on 1)

The method of claim 1 wherein said casting step comprises forming said first grain pattern as an equiaxed grain pattern.

### Claim 6 (depends on 5)

The method of claim 5, wherein said casting step further comprises forming said equiaxed grain pattern in a root attachment section.

### Claim 7 (depends on 5)

The method of claim 5, wherein said casting step comprises forming said second grain pattern as a directionally solidified pattern.

### Claim 8 (depends on 7)

The method of claim 7, wherein said casting step further comprises forming said second pattern in an airfoil portion.