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Method for casting a component

A technology for parts and production parts, which is applied in the direction of engine components, thin material processing, cylinders, etc., can solve the problems of high cost and limited application

Inactive Publication Date: 2010-03-10
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the '736 patent discloses localized regions that provide improved heat resistance, it is costly and has limited application

Method used

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  • Method for casting a component
  • Method for casting a component
  • Method for casting a component

Examples

Experimental program
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Embodiment Construction

[0018] figure 1 is a front view of the lower (fire side) surface 12 of a component, in this example a cylinder head 10, according to an embodiment of the invention. The cylinder head 10 may include a first component part 15 and a second component part 60 separated by a bonding layer 65 . In this case, the cylinder head 10 may be in a rough state after casting and some machining. The cylinder head 10 may also include a plurality of side surfaces 14 in addition to a fire side surface 12 and an upper surface (not shown). The fireside surface 12 may be cast with a plurality of valve bores 20 associated with each cylinder (not shown). After final machining of the fireside surface 12, valve bore 20 and other required openings, such as fuel injector bores (not shown) associated with each cylinder (not shown), the fireside surface 12 can be tightened. fixed to the cylinder block (not shown).

[0019] figure 1 a is figure 1 A cross-sectional view of the cylinder head 10 along the...

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PUM

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Abstract

A cast component having localized areas of improved physical properties is disclosed. The component may initially be produced having a void portion in a predetermined area requiring improved physicalproperties. A second molten material may be added to the void portion such that it chemically bonds to the void portion. The component may then be finished such to a final shape with a localized areaof improved physical properties.

Description

technical field [0001] The present invention relates generally to cast components, and more particularly to cast components having localized regions of improved physical properties. Background technique [0002] Cast parts are often designed to take advantage of the strength-to-weight ratio within the constraints of their mechanical properties. Tighter emissions requirements are also a contributing factor as higher combustion pressures and temperatures are sought. Due to the physical characteristics of cast materials, especially gray cast iron in engineering applications, thermal fatigue limits are often reached in certain areas of the component causing failure. When this occurs, repairing castings and other components is difficult and time consuming for the component owner, often resulting in lengthy downtime and expense. Repairs to castings typically involve removing damaged portions of the casting by machining, followed by welding to rebuild the damaged area. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/00
CPCB22D19/0009B22D19/10B22D19/0081Y10T428/12646
Inventor C·A·基尼
Owner CATERPILLAR INC