Die-casting method using sintered material and a die-cast product manufactured thereby
a die-casting and sintered material technology, applied in the direction of engine components, cylinders, mechanical equipment, etc., can solve the problems of low bonding strength between the two, unsatisfactory rigidity required for the components, and increase manufacturing costs, so as to improve the overall strength of the cast product, improve the bonding strength, and increase the density of the inser
Inactive Publication Date: 2022-03-03
HYUNDAI MOTOR CO LTD +1
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Benefits of technology
The present disclosure provides a method of improving the bonding strength between an insert and a casting portion in the die-casting process by using a sintered material with pores formed in its surface. Molten aluminum injected into the mold can infiltrate into the pores, creating a mechanical bonding structure and increasing the overall strength of the cast product.
Problems solved by technology
When aluminum is used alone, it is possible to achieve weight reduction, but there is a disadvantage in that rigidity required for the components is not satisfactory.
However, since cast iron, which is the material of the insert, and aluminum, which is the material of the bed plate body, are different types of metals, there is a problem in that the bonding strength therebetween is low.
However, this method is problematic in that manufacturing costs increase due to the increase in the number of steps.
Method used
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[0028]Hereinafter, embodiments of the present disclosure are described in more detail with reference to the accompanying drawings. However, the present disclosure is not limited to the following embodiments and may be implemented in various different forms. The embodiments are provided only to completely disclose the present disclosure and to fully provide a person of ordinary skill in the art with the category of the disclosure.
[0029]A die-cast product manufactured through a die-casting method using a sintered material according to an embodiment of the present disclosure is applicable to an engine component of an internal combustion engine. Such an engine component is required to maintain excellent rigidity while achieving weight reduction thereof. For example, a cylinder block, a piston pin, and a bed plate constituting an internal combustion engine may be manufactured through a die-casting method using a sintered material according to the present disclosure.
[0030]Such a die-cast ...
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Abstract
A die-casting method using a sintered material increases bonding strength between an insert and a casting portion. A die-cast product is manufactured using the die-casting method. The die-casting method includes an insert preparation step of preparing an insert having pores formed in a surface thereof by compacting iron-based powder and then sintering the compacted iron-based powder. The pores have a size of 100 μm or more and are distributed over the surface of the insert and the insert has a density of 6.4 to 6.9 g / cm3 The method includes a die-casting step of placing the prepared insert inside a mold and injecting molten aluminum into the mold so as to perform casting while causing the molten aluminum to infiltrate into the pores formed in the surface of the insert.
Description
CROSS REFERENCE TO RELATED APPLICATION[0001]The present application claims priority to Korean Patent Application No. 10-2020-0107928, filed Aug. 26, 2020, the entire contents of which are incorporated herein for all purposes by this reference.BACKGROUND1. Field of the Disclosure[0002]The present disclosure relates to a die-casting method using a sintered material and a die-cast product manufactured thereby. More particularly, the present disclosure relates to a die-casting method using a sintered material, wherein a bonding strength between an insert and a casting portion is improved and relates to a die-cast product manufactured thereby.2. Description of the Prior Art[0003]Recently, in order to improve the fuel efficiency of vehicles, the weight reduction of components constituting the vehicles is continually an objective.[0004]For example, there is a trend of using aluminum in place of cast iron, which has been mainly used as a material for components of internal combustion engine...
Claims
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IPC IPC(8): B22D19/00B22D21/00
CPCB22D19/0009B22D19/0081B22D21/007B22D17/24B22D19/00B22D19/16B22D17/2218B22D17/32B22F7/002B22F3/11
InventorKIM, HAK SOOKIM, SEOK JUN
OwnerHYUNDAI MOTOR CO LTD