선택한 단어 수는 입니다.
최소 단어 이상 선택하여야 합니다.
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선택한 단어 수는 30입니다.
최대 10 단어까지만 선택 가능합니다.
최대 10 단어까지만 선택 가능합니다.
제안 방법
- 3D modeling was performed for the casting product, core, sprue, runner, and riser for solidification analysis of sand casting, and it was divided into triangle elements. The size of the element was set at 10 mm for sand casting mold, at 5mm for casting product, core, and runner.
- After heat treatment, roughing and finishing were performed as per the drawing. Finally, composition test, penetration test, and dimension inspection were carried out.
- 19 shows an example of a pinhole defect during penetrant inspection. In order to machine the wear-resistant alloy cast steel material, the sleeve parts were subjected to roughing and finishing, and final component inspection, penetrant inspection and dimensional inspection were carried out to complete the product.
- In order to perform a solidification analysis of precision casting for the sleeve parts, surface element was done using a wax tree model, and then shell was prepared for precision casting. With shell generation thickness at 8mm, 618,484 numbers of volume element were created.
- Sleeve parts were designed as a precision casting and a sand casting. The solidification analysis of casting process according to alloy cast steel material was conducted. Temperature distribution, filling time, and shrinkage cavity were investigated according to the filling rate.
- To improve this problem, development of high-life sleeve parts is needed by applying wear-resistant alloy casting material[11-14]. Therefore, this study aims to develop high-life sleeve parts for the sink roll of continuous hot-dip galvanizing equipment by applying the casting process of wear-resistant alloy casting which can reduce the manufacturing cost and extend the life.
- In this study, a precision casting and a sand casting process are proposed to develop high-life sleeve parts for continuous hot-dip galvanizing roll with a wear resistant alloy steel cast material. Wear test, casting solidification analysis, mockup manufacturing, and performance evaluation for the prototype were performed to get optimal sleeve parts in the casting process. The summary of the study result is as follows;
대상 데이터
- 06). Therefore, analysis was carried out for two types of materials, i.e., Stellite 6 and T800. For the precision casting solidification analysis condition for the sleeve, the injection temperature of the molten metal was set at 1,550°C, the mold material was made of zircon, and the mold temperature was set at 1,050°C as shown in Table 3.
이론/모형
- 5 shows the finite element analysis model for the sleeve precision casting. A software for commercial casting analysis ProCAST was used for casting solidification analysis.
- For the wear test, pin-on-disk method is generally used. Pin-on-disk wear test was performed to evaluate friction coefficient for the wear-resistant alloy casting material[15]. Accordingly, pin and disk specimens were prepared for the wear test.
- Temperature distribution, filling time, and shrinkage cavity were investigated according to the filling rate. With the obtained results, optimum casting method could be designed. Good sleeve products could be obtained in both the precision casting and sand casting with the Stellite 6 under the filling temperature at 1,550°C.
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