# US 10,245,637 B2 · Low modulus shot sleeve for high temperature die casting

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- Number: US 10,245,637 B2
- Document ID: US10245637B2
- Status: Granted
- Kind: B2
- Application number: 15/248,235
- Filed: 2016-08-26
- Published: 2018-03-01
- Granted: 2019-04-02
- Earliest claimed: 2016-08-26
- Assignees: United Technologies Corporation
- Applicants: United Technologies Corporation
- Inventors: John Joseph Marcin; Dilip M. Shah; Carl R. Verner; Albert Rabinovich; Weiduo Yu; Thomas N. Slavens
- Web page: https://patentgrep.com/patent/US10245637B2

## CPC

- B22D 17/2023: {Nozzles or shot sleeves}
- B22D 17/2038: {Heating, cooling or lubricating the injection unit (for plastics B29C45/74, B29C45/83)}
- 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)

## Abstract

Shot sleeves for high temperature die casting include a nickel-based alloy having a low modulus single crystal with axi-symmetric orientation.

## Claims

### Claim 1

A shot sleeve for high temperature die casting formed from a single crystal, nickel-based alloy, the shot sleeve having a single-crystal structure with an axi-symmetrical orientation and a low modulus direction oriented to provide a higher thermal-mechanical fatigue resistance along an axial direction of the shot sleeve than in a radial direction.

### Claim 2 (depends on 1)

The shot sleeve of claim 1, wherein the single crystal, nickel-based alloy has a first axis with a modulus of 18-22 Mpsi at room temperature.

### Claim 3 (depends on 2)

The shot sleeve of claim 2, wherein the single crystal, nickel-based alloy has a radial direction with a modulus of 28-32 Mpsi.

### Claim 4 (depends on 2)

The shot sleeve of claim 2, wherein the single crystal, nickel-based alloy has a radial direction with a modulus of 18-22 Mpsi.

### Claim 5 (depends on 4)

The shot sleeve of claim 4, wherein the single crystal, nickel-based alloy has a tangential or hoop direction with a modulus of 18-22 Mpsi.

### Claim 6 (depends on 1)

The shot sleeve of claim 1, wherein the nickel-based alloy is a solid solution hardened alloy.

### Claim 7 (depends on 1)

The shot sleeve of claim 1, wherein the nickel-based alloy is a low volume fraction precipitation hardened alloy.

### Claim 8 (depends on 1)

The shot sleeve of claim 1, wherein the nickel-based alloy is a high volume fraction low density precipitation hardened alloy.

### Claim 9 (depends on 1)

The shot sleeve of claim 1, wherein the nickel-based alloy is a high density creep resistant alloy.

### Claim 10 (depends on 1)

The shot sleeve of claim 1, wherein the nickel-based alloy is a dual precipitation hardened alloy.

### Claim 11 (depends on 1)

The shot sleeve of claim 1, further comprising internal cooling channels formed therein.