Method of manufacturing precision cast parts for vehicle exhaust systems
An exhaust system, precision casting technology, applied in the field of precision casting, can solve the problems of easy to shake out castings, high labor cost and manufacturing cost, damage to molds, etc.
Active Publication Date: 2017-03-08
HYUNDAI MOTOR CO LTD +1
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] However, the method described above has the disadvantage that when an article is produced by this method, labor costs and manufacturing costs are high because the method involves performing the coating process several times
In addition, this method has a problem in that the mold may be damaged when the number of coats is reduced during preheating the mold or during injection of molten metal
Conventional molds can easily shake out castings, and the method of manufacturing them suffers from unresolved problems in that labor costs and manufacturing costs are high because the method includes performing the coating process several times
Further, when the number of coats is arbitrarily reduced, the mold will be damaged
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Before the description is made, it should be understood that the terms used in the specification and appended claims are not to be construed as limited to their ordinary and dictionary meanings, and are based on the principle of allowing the inventors to define the terms as appropriate for best description. Meanings and ideas corresponding to technical aspects of the present disclosure are explained. Therefore, the description given here is only a simple preferred embodiment for illustrative purposes and is not intended to limit the scope of the present disclosure. Therefore, it should be understood that without departing from the spirit and scope of the present disclosure, In some cases, various other equivalents and modifications may be made which may be substituted at the time of filing this application.
[0021] Reference will now be...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
A method of manufacturing precision cast parts for vehicle exhaust systems includes fabricating a model of a product to be manufactured using a substance selected from the group consisting of a wax and a plastic, forming a first coating layer on a surface of the model using a first slurry, forming a second coating layer on the surface of the model coated with the first coating layer using a second slurry, drying the first and second coating layers to form a mold and heating the mold to remove the model, pre-heating the mold, placing the mold in a ceramic box with a top portion open, and filling an inner part of the ceramic box with ceramic balls, and producing a product by injecting a molten metal into the mold to cast the product.
Description
technical field [0001] The present disclosure relates to an investment casting method, and more particularly, to a method of manufacturing an investment casting part for a vehicle exhaust system capable of saving manufacturing cost and reducing manufacturing time while providing excellent heat resistance ) and precision. Background technique [0002] Generally, parts used in an automobile exhaust system have to withstand exhaust gas having a high temperature of 800°C to 950°C. Specifically, since such driving parts have complicated shapes, they are manufactured using materials containing a large amount of expensive nickel (Ni) having high heat resistance, such as stainless steel and Inconel alloy. [0003] Elements such as aluminum (Al), titanium (Ti), etc. are added to this heat-resistant alloy to enhance high-temperature strength. In this case, it is difficult to control alloying elements because additive elements such as Al, Ti, etc. are highly reactive with air. There...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22C3/00
CPCB22C3/00B22C9/04B22C1/165B22C7/02B22C7/023B22C9/02B22C9/12B22C9/22B22D17/02B22D25/02B22D27/15
Inventor 李正锡
Owner HYUNDAI MOTOR CO LTD