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Bimetallic casting

A casting, preform technology, used in vehicle components, spoked wheels, wheels, etc.

Active Publication Date: 2012-05-09
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The materials, processing time, equipment, handling and transportation, and associated costs for applying such as diffusion aluminum powder coating to magnesium components in secondary processing are applied to the corrosion resistance of magnesium components. Improved use of disadvantages

Method used

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  • Bimetallic casting
  • Bimetallic casting
  • Bimetallic casting

Examples

Experimental program
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Embodiment Construction

[0012] See the drawings, where similar reference numerals designate similar components in several views. Figure 1-6 The elements shown in are drawn to scale or not to scale. Accordingly, the specific dimensions and applications provided in the drawings shown here are not intended to be regarded as limiting.

[0013] figure 1 A cross-sectional view of the casting mold 10 is shown, the casting defining a cavity (?) 16 and an injection port or gate 14 through which molten metal 12 can be provided to the mold during the casting process Cavity 16. The mold 10 may be a permanent mold, a sand mold, or other mold suitable for casting the casting components described herein. The module 10 may also include additional doors, runners, and core pieces, which can be configured and arranged as needed to provide a sufficient number and Suitable flow rate, distribution and temperature of molten metal to produce castings as described herein.

[0014] A method of forming a casting is provided and...

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PUM

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Abstract

A method of forming a casting includes providing a preform to a mold cavity. The preform is formed from one of a first metal and a second metal and defines an interface surface. A molten portion of the other of the first metal and the second metal is cast into the mold such that the molten portion proximately contacts the interface surface of the preform. An interface layer at the interface surface, a first portion defined by the mold cavity and the interface layer, and a second portion defined by the interface layer, are formed during casting. The interface layer may define a metallurgical bond between the first portion and the second portion. In the non-limiting example provided herein, the first portion is substantially comprised of aluminum and the second portion is substantially comprised of magnesium. In a non-limiting example, the casting may be configured as a vehicle wheel.

Description

Technical field [0001] The invention relates to forming bimetallic castings. Background technique [0002] Components made of magnesium metal provide advantages such as a high strength-to-weight ratio when compared with similar-sized components made of aluminum or iron-based materials. For example, wheels have been forged from magnesium for special applications such as racing car wheels. The application of magnesium wheels in non-professional vehicles has been limited by the poor corrosion resistance of magnesium. In order to improve the corrosion resistance of magnesium, coatings (such as diffused aluminum powder coating) applied to the surface of magnesium components have been developed, but the peeling or cracking of the applied coating invalidates the protective effect of the coating. Used to apply materials, processing time, equipment, handling and transportation, and related costs such as diffused aluminum powder coating to magnesium components in secondary processing. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/16B60B3/00
CPCB60B3/06B60B2360/106B60B3/02B60B2360/147B60B2360/104B22D19/00B22D19/16
Inventor B.E.卡尔森P.E.克拉朱斯基
Owner GM GLOBAL TECH OPERATIONS LLC