Repair ultra-large casting

Patent metadata

Field	Value
Publication number	US-2023356293-A1
Application number	US-202217735337-A
Country	US
Kind code	A1
Filing date	May 3, 2022
Priority date	May 3, 2022
Publication date	Nov 9, 2023
Grant date	—

Abstract

A design for repair casting having a repairable ultra-large single-piece casting and a replacement part. The ultra-large single-piece casting includes a main body portion, at least one predefined replaceable portion integrally cast with the main body portion, and a cut-guide delineating the predefined replaceable portion from the main body portion. The cut-guide includes a continuous channel defined on an exterior surface of the single-piece casting. The cut-guide further includes a rib extending from a channel wall on the main body portion. A damaged replaceable portion is excisable from the main-body portion by cutting through the single-piece casting along the cut-guide. The excised damaged replaceable portion may be replaced with the replacement part, which has substantially the same geometry, dimensions, and mechanical properties as an undamaged replaceable portion. The replacement part may be joined to the main body portion by mechanical means or by welding.

First claim

What is claimed is:

1 . A repairable casting, comprising:
a single-piece casting having a main body portion, at least one replaceable portion extending integrally from the main body portion, and a cut-guide delineating the replaceable portion from the main body portion; and a replacement part having a same geometry and dimensions as the at least one replaceable portion.

2 . The repairable casting of claim 1 ,
wherein the replaceable portion is excisable from the main body portion by cutting through the single-piece casting along the cut-guide; and wherein the replacement part is attachable to the main body portion to replace an excised replaceable portion.

3 . The repairable casting of claim 2 , wherein the cut-guide is defined by a channel.

4 . The repairable casting of claim 3 , wherein the channel is a continuous channel defining a continuous border between the at least one replaceable portion and the main body portion.

5 . The repairable casting of claim 4 , wherein the continuous channel is defined on an exterior surface of the single-piece casting.

6 . The repairable casting of claim 5 , wherein the continuous channel includes a curved channel bottom.

7 . The repairable casting of claim 5 , wherein the exterior surface defines at least one rib immediately adjacent the continuous channel.

8 . The repairable casting of claim 7 , wherein the at least one rib is defined on the main body portion.

9 . The repairable casting of claim 8 ,
wherein the at least one rib defined on the main-body portion includes a mating surface, wherein the replacement part includes an external surface defining a rib having a mating surface configured to be joinable with the mating surface of the at least one rib defined on the main body portion.

10 . The repairable casting of claim 9 ,
wherein the at least one rib defined on the main body portion defines a plurality of bolt through-holes; wherein the rib of the replacement part defines a plurality of bolt through-holes; and wherein the plurality of bolt through-holes of the rib of the replacement part aligns with the plurality of bolt through-holes of the main-body portion when the replacement part is arranged for assembly onto the main-body portion.

11 . An ultra-large single-piece repairable casting for a vehicle, comprising:
a main body portion; at least one replaceable portion integrally cast with the main body portion; and a cut-guide delineating the replaceable portion from the main body portion.

12 . The ultra-large single-piece repairable casting of claim 11 , further comprising:
a length (L) of greater than 1 meter (m); a width (W) of greater than 0.8 m; and an average height of about 0.25 m.

13 . The ultra-large single-piece repairable casting of claim 12 , wherein the cut-guide is a continuous channel defined on an exterior surface of the ultra-large single-piece repairable casting.

14 . The ultra-large single-piece repairable casting of claim 13 , wherein the cut-guide includes a raised rib extending from a channel wall of the continuous channel on the main body portion.

15 . The ultra-large single-piece repairable casting of claim 14 , wherein the raised rib defines at least one of a plurality of bolt through-holes, a locating pin, and a locating pin receiver.

16 . A design for repair die-casting, comprising:
a single-piece die casting including a main body portion and a predefined replaceable portion extending integrally from the main body portion; and a cast replacement part having substantially a same geometry, a same dimension, and a same mechanical property as the predefined replaceable portion.

17 . The design for repair die casting of claim 16 , wherein the single-piece die casting further includes a cut-guide delineating the replaceable portion from the main body portion.

18 . The design for repair die-casting of claim 17 , wherein the cut-guide comprises a continuous rib defined on an exterior surface of the single-piece die casting.

19 . The design for repair die-casting of claim 18 , wherein the cut-guide further comprises a continuous channel defined on the exterior surface of the single-piece die casting immediately adjacent the continuous rib.

20 . The design for repair die-casting of claim 19 , wherein the continuous rib is defined on the main body portion.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Wilson Daniel J
• Wang Liang
• Wang Qigui
• Hess Devin R
• Wood Michelle A
• Daul Ronald C
• Shabbir Ali

Classifications

• B22D17/229 Primary

  with exchangeable die part (B22D17/2245 takes precedence) · CPC title

• B22C9/22 Primary

  Moulds for peculiarly-shaped castings · CPC title

• B23P6/04

  Repairing fractures or cracked metal parts or products, e.g. castings · CPC title

• B62D25/2063

  Floor elements for repairs · CPC title

• B23P6/00

  Restoring or reconditioning objects (straightening or restoring form of sheet metal, metal rods, metal tubes, metal profiles, or specific articles made therefrom B21D1/00, B21D3/00; repairing defective or damaged objects by casting techniques B22D19/10) · CPC title