Casting mold of grading with silicon carbide
US-2015352630-A1 · Dec 10, 2015 · US
Riser tube coating for cast aluminum alloy and using method thereof
US12090545B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12090545-B2 |
| Application number | US-202318198039-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 16, 2023 |
| Priority date | May 30, 2022 |
| Publication date | Sep 17, 2024 |
| Grant date | Sep 17, 2024 |
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Abstract
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A riser tube coating for a cast aluminum alloy includes a coating-riser tube contact layer material and a coating-aluminum liquid contact layer material. The present invention has a coating protection effect to the maximum mainly by designing ratios of ZrO, Al2O3, ZnO, binders and other materials and a coat drying heat treatment process, and finally realizes effects of protecting a riser tube, being free of aluminum sticking and prolonging a service life.
First claim
Opening claim text (preview).
What is claimed is: 1. A riser tube coating for a cast aluminum alloy, characterized by comprising a coating-riser tube contact layer material and a coating-aluminum liquid contact layer material, wherein the coating-riser tube contact layer material comprises ZrO 2 , Al 2 O 3 , ZnO and a binder, ZrO 2 accounts for 70%-80%, Al 2 O 3 accounts for 10%-15%, ZnO accounts for 10%-15%, and a weight ratio of the binder to the materials is 10:1; and the coating-aluminum liquid contact layer material is mainly ZrO 2 , Al 2 O 3 , ZnO and a binder, in the coating-aluminum liquid contact layer material, the ZrO 2 accounts for 80%-90%, Al 2 O 3 accounts for 5%-10%, ZnO accounts for 5%-10%, and a weight ratio of the binder to the materials is 15:1. 2. The riser tube coating for the cast aluminum alloy according to claim 1 , characterized in that ZrO 2 in the coating-riser tube contact layer material is of a particle structure, a particle size is 50 μm-70 μm, Al 2 O 3 is of a particle structure, a particle size is 40 μm-60 μm, ZnO is of a particle structure, and a particle size is 40 μm-60 μm. 3. The riser tube coating for the cast aluminum alloy according to claim 2 , characterized in that a thickness of the coating-riser tube contact layer material is 0.5 mm-1.0 mm. 4. The riser tube coating for the cast aluminum alloy according to claim 1 , characterized in that ZrO 2 in the coating-aluminum liquid contact layer material is of a particle structure, a particle size is 30 μm-50 μm, Al 2 O 3 is of a particle structure, a particle size is 20 μm-30 μm, ZnO is of a particle structure, and a particle size is 20 μm-30 μm. 5. The riser tube coating for the cast aluminum alloy according to claim 4 , characterized in that a thickness of the coating-aluminum liquid contact layer material is 1.0 mm-1.5 mm.
Assignees
Inventors
Classifications
Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates · CPC title
Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould · CPC title
Filters · CPC title
- B22C3/00Primary
Selection of compositions for coating the surfaces of moulds, cores, or patterns · CPC title
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Frequently asked questions
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- What does patent US12090545B2 cover?
- A riser tube coating for a cast aluminum alloy includes a coating-riser tube contact layer material and a coating-aluminum liquid contact layer material. The present invention has a coating protection effect to the maximum mainly by designing ratios of ZrO, Al2O3, ZnO, binders and other materials and a coat drying heat treatment process, and finally realizes effects of protecting a riser tube, …
- Who is the assignee on this patent?
- Citic Dicastal Co Ltd, Citic Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B22C3/00. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Sep 17 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).