CN104550755A - Precision casting method for graphite mould-ceramic core titanium alloy - Google Patents
Precision casting method for graphite mould-ceramic core titanium alloy Download PDFInfo
- Publication number
- CN104550755A CN104550755A CN201310518411.5A CN201310518411A CN104550755A CN 104550755 A CN104550755 A CN 104550755A CN 201310518411 A CN201310518411 A CN 201310518411A CN 104550755 A CN104550755 A CN 104550755A
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- CN
- China
- Prior art keywords
- casting
- ceramic core
- graphite
- titanium alloy
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
Abstract
The invention discloses a precision casting method for a graphite mould-ceramic core titanium alloy. The precision casting method disclosed by the invention comprises the following steps: preparing a ceramic mould core and a graphite mould shell, then, degassing the graphite mould shell and the ceramic mould core, assembling the ceramic mould core and the graphite mould shell to form a casting mould according to a casting mould shell figure, smelting, and casting. The precision casting method disclosed by the invention has the advantages that aiming at a complex three-dimensional variable-curved surface titanium alloy precise casting, a titanium alloy casting is cast by utilizing the precision casting method disclosed by the invention; therefore, the dimensional accuracy, the internal quality and the surface quality of the casting are improved; the rejection rate of the casting is greatly reduced; the casting cost of the casting is reduced; and the production period of the casting is shortened.
Description
Technical field
The invention belongs to casting technology field, be specifically related to a kind of precision casting method for graphite mould-ceramic core titanium alloy.
Background technology
Graphite mould-ceramic core titanium alloy hot investment casting process roughly comprises and prepares ceramic core, prepare graphite shell, graphite shell and ceramic core degasification etc., in current titanium alloy precision casting technique, the casting finished products precision made cannot ensure, and cast(ing) surface is coarse, not only casting process is more, affect production capacity, percent defective is higher simultaneously.
Summary of the invention
In order to overcome the above-mentioned technical problem that prior art field exists, the object of the invention is to, provide a kind of precision casting method for graphite mould-ceramic core titanium alloy, can directly cast out graphite mould-ceramic core titanium alloy foundry goods, processing technology thereof is simple.
Precision casting method for graphite mould-ceramic core titanium alloy provided by the invention, comprises the following steps:
(1) ceramic core and graphite shell is prepared;
(2) graphite shell and ceramic core degasification: described ceramic core degasification is that the ceramic core be prepared into is put into vacuum degassing stove, is heated to 200 DEG C-250 DEG C, insulation 1h-2.5h, cools to room temperature with the furnace;
(3) ceramic core and graphite shell are according to casting shell molds group type figure, are assembled into casting mold: described graphite shell degasification, are that the graphite shell be prepared into is put into vacuum degassing stove, are heated to 800 DEG C-950 DEG C, and insulation 3h-8h, cools to room temperature with the furnace;
(4) melting and casting: carry out melting and cast according to titanium alloy smelting, pouring technology by putting into vacuum consumable electrode skull crucible through the ceramic core of degassing process and graphite shell.
Precision casting method for graphite mould-ceramic core titanium alloy provided by the invention, its beneficial effect is, overcomes operation in prior art process more, the problem that workload is large, improves production efficiency; Avoid the mass defect caused because corrosion resistance is weak, utilization rate of raw materials is high, reduces production cost; The finished product cast size cast out is accurate, without the need to machining, effectively ensure that casting quality.
Detailed description of the invention
Below in conjunction with an embodiment, precision casting method for graphite mould-ceramic core titanium alloy provided by the invention is described in detail.
Embodiment
The precision casting method for graphite mould-ceramic core titanium alloy of the present embodiment, comprises the following steps:
(1) ceramic core and graphite shell is prepared;
(2) graphite shell and ceramic core degasification: described ceramic core degasification is that the ceramic core be prepared into is put into vacuum degassing stove, is heated to 230 DEG C, insulation 1.5h, cools to room temperature with the furnace;
(3) ceramic core and graphite shell are according to casting shell molds group type figure, are assembled into casting mold: described graphite shell degasification, are that the graphite shell be prepared into is put into vacuum degassing stove, are heated to 850 DEG C, and insulation 7.5h, cools to room temperature with the furnace;
(4) melting and casting: carry out melting and cast according to titanium alloy smelting, pouring technology by putting into vacuum consumable electrode skull crucible through the ceramic core of degassing process and graphite shell.
Precision casting method for graphite mould-ceramic core titanium alloy, can directly cast out graphite mould-ceramic core titanium alloy foundry goods, and without the need to machining, operation is simple, and the finished size cast out is accurate, effectively ensure that casting quality.
Claims (1)
1. a precision casting method for graphite mould-ceramic core titanium alloy, is characterized in that: said method comprising the steps of:
(1) ceramic core and graphite shell is prepared;
(2) graphite shell and ceramic core degasification: described ceramic core degasification is that the ceramic core be prepared into is put into vacuum degassing stove, is heated to 200 DEG C-250 DEG C, insulation 1h-2.5h, cools to room temperature with the furnace;
(3) ceramic core and graphite shell are according to casting shell molds group type figure, are assembled into casting mold: described graphite shell degasification, are that the graphite shell be prepared into is put into vacuum degassing stove, are heated to 800 DEG C-950 DEG C, and insulation 3h-8h, cools to room temperature with the furnace;
(4) melting and casting: carry out melting and cast according to titanium alloy smelting, pouring technology by putting into vacuum consumable electrode skull crucible through the ceramic core of degassing process and graphite shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310518411.5A CN104550755A (en) | 2013-10-29 | 2013-10-29 | Precision casting method for graphite mould-ceramic core titanium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310518411.5A CN104550755A (en) | 2013-10-29 | 2013-10-29 | Precision casting method for graphite mould-ceramic core titanium alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104550755A true CN104550755A (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310518411.5A Pending CN104550755A (en) | 2013-10-29 | 2013-10-29 | Precision casting method for graphite mould-ceramic core titanium alloy |
Country Status (1)
| Country | Link |
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| CN (1) | CN104550755A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109261889A (en) * | 2018-10-23 | 2019-01-25 | 北京百慕航材高科技股份有限公司 | A kind of titanium or titanium alloy casting and its forming method |
| CN109967714A (en) * | 2019-05-07 | 2019-07-05 | 上海工程技术大学 | Composite centrifugal casting mold for annular titanium alloy part |
| CN111375731A (en) * | 2020-03-27 | 2020-07-07 | 洛阳双瑞精铸钛业有限公司 | Integral preparation process of large-scale framework high-temperature titanium alloy casting |
| CN113351844A (en) * | 2020-03-06 | 2021-09-07 | 沈阳铸造研究所有限公司 | Method for precisely forming large-scale complex cavity titanium alloy casting |
| CN114589296A (en) * | 2022-02-24 | 2022-06-07 | 洛阳科品实业有限公司 | Titanium alloy impeller casting method combined with 3D printing |
-
2013
- 2013-10-29 CN CN201310518411.5A patent/CN104550755A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109261889A (en) * | 2018-10-23 | 2019-01-25 | 北京百慕航材高科技股份有限公司 | A kind of titanium or titanium alloy casting and its forming method |
| CN109261889B (en) * | 2018-10-23 | 2020-09-29 | 北京百慕航材高科技有限公司 | Titanium and titanium alloy casting and forming method thereof |
| CN109967714A (en) * | 2019-05-07 | 2019-07-05 | 上海工程技术大学 | Composite centrifugal casting mold for annular titanium alloy part |
| CN109967714B (en) * | 2019-05-07 | 2021-06-11 | 上海工程技术大学 | Composite centrifugal casting mould for titanium alloy ring-shaped piece |
| CN113351844A (en) * | 2020-03-06 | 2021-09-07 | 沈阳铸造研究所有限公司 | Method for precisely forming large-scale complex cavity titanium alloy casting |
| WO2021174375A1 (en) * | 2020-03-06 | 2021-09-10 | 沈阳铸造研究所有限公司 | Precision forming method for large-sized complex cavity titanium alloy casting |
| CN111375731A (en) * | 2020-03-27 | 2020-07-07 | 洛阳双瑞精铸钛业有限公司 | Integral preparation process of large-scale framework high-temperature titanium alloy casting |
| CN111375731B (en) * | 2020-03-27 | 2021-10-26 | 洛阳双瑞精铸钛业有限公司 | Integral preparation process of large-scale framework high-temperature titanium alloy casting |
| CN114589296A (en) * | 2022-02-24 | 2022-06-07 | 洛阳科品实业有限公司 | Titanium alloy impeller casting method combined with 3D printing |
| CN114589296B (en) * | 2022-02-24 | 2023-05-16 | 洛阳科品钛业股份有限公司 | Titanium alloy impeller casting method combined with 3D printing |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |