CN113560496A - Casting forming method for martensitic stainless steel casting - Google Patents
Casting forming method for martensitic stainless steel casting Download PDFInfo
- Publication number
- CN113560496A CN113560496A CN202110915306.XA CN202110915306A CN113560496A CN 113560496 A CN113560496 A CN 113560496A CN 202110915306 A CN202110915306 A CN 202110915306A CN 113560496 A CN113560496 A CN 113560496A
- Authority
- CN
- China
- Prior art keywords
- casting
- alloy material
- stainless steel
- shell
- martensitic stainless
- 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.)
- Pending
Links
- 238000005266 casting Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 30
- 229910001105 martensitic stainless steel Inorganic materials 0.000 title claims abstract description 24
- 239000000956 alloy Substances 0.000 claims abstract description 41
- 239000004576 sand Substances 0.000 claims abstract description 29
- 238000000465 moulding Methods 0.000 claims abstract description 15
- 230000005494 condensation Effects 0.000 claims abstract description 10
- 238000009833 condensation Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000004020 conductor Substances 0.000 abstract description 3
- 239000012080 ambient air Substances 0.000 abstract 1
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011257 shell material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Images
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
- B22C9/04—Use of lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D45/00—Equipment for casting, not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention provides a method for casting and molding a martensitic stainless steel casting, which comprises the following steps: providing a solid particle-shaped shield, preparing a shell according to a pattern shape in a pre-drawn design drawing, after an alloy material smelted into a liquid state is poured into the shell, burying the shell and the alloy material by using the shield, and taking out a casting from the shell after the alloy material is condensed to form the casting. By adopting the technical scheme of the invention, the condensation process of the casting is finished in the closed space, the high-temperature resistant sand grains are good heat conductors, the heat on the surface of the shell is absorbed, the condensation speed of the alloy material is accelerated, the production efficiency is improved, the mutual relation between the alloy material and the external ambient air is shielded, the alloy material can be effectively prevented from being oxidized, corresponding oxides can be prevented from being mixed in the casting material, the surface quality of the casting is improved, the metallographic structure of the casting material is prevented from being damaged, and the comprehensive performance of the casting is improved.
Description
Technical Field
The invention relates to the technical field of casting processes, in particular to a method for casting and molding a martensitic stainless steel casting.
Background
In the production process of an investment casting, in order to ensure casting molding and reduce the defects of undercasting and cold shut, when the casting is poured, the preheating temperature of an investment shell is higher, the temperature of alloy liquid is also higher, in addition, aiming at pouring different alloy materials, the difference of the preheating temperature of the shell and the technological parameters of the pouring temperature is great, when the alloy material is poured, the surface of the incompletely molded casting is directly contacted with air in the condensation process of the alloy material, some elements which are easy to oxidize, such as carbon, silicon, manganese and the like, in the casting are easy to be subjected to oxidation reaction with oxygen in the air under the high temperature condition, the generated oxides are mixed in the casting material, pits of a star-and-grid are formed on the surface of the casting, the appearance quality of the casting is influenced, the elements are lost in the finally molded casting material, the metallographic structure of the casting material is damaged, and the physics of the casting is influenced, Chemical and performance properties.
Disclosure of Invention
In order to solve the technical problem, the invention provides a method for casting and molding a martensitic stainless steel casting.
The invention is realized by the following technical scheme.
The invention provides a method for casting and molding a martensitic stainless steel casting, which comprises the following steps:
providing a solid particle-shaped shield, preparing a shell according to a pattern shape in a pre-drawn design drawing, burying the shell and an alloy material by using the shield after the alloy material smelted into a liquid state is poured into the shell, and taking out a casting from the shell after the alloy material is condensed to form the casting.
The buried thickness of the shield is not less than 5 mm.
The alloy material is martensitic stainless steel with the trade mark of 1Cr7Ni 3.
The shield is high-temperature resistant sand grains which are screened by a screen with the mesh density not exceeding 40 meshes to 70 meshes in advance.
The casting forming method of the martensitic stainless steel casting further comprises the following steps: and providing a sand bed, wherein the process that the protective object buries the shell and the alloy material is completed in the sand bed.
The casting forming method of the martensitic stainless steel casting further comprises the following steps: and providing a sand bed, and pouring the alloy material smelted into a liquid state into the shell in the sand bed.
The shield is pre-contained in the sand bed.
The upper end of the sand bed is provided with an opening.
The condensation time of the alloy material is not less than 1 h.
The invention has the beneficial effects that: according to the technical scheme, the shell and the alloy material are buried by using the high-temperature-resistant sand grains, so that the condensation process of the casting is completed in the closed space, on one hand, the high-temperature-resistant sand grains are good heat conductors, the heat on the surface of the shell is absorbed, the condensation speed of the alloy material is accelerated, the production efficiency is improved, on the other hand, the high-temperature-resistant sand grains shield the mutual relation between the alloy material and the external environment air, the alloy material can be effectively prevented from being oxidized, corresponding oxides can be prevented from being mixed in the casting material, the surface quality of the casting is improved, the metallographic structure of the casting material is prevented from being damaged, and the physical, chemical and service performance of the casting are improved.
Drawings
Figure 1 is a schematic view of the arrangement of the shield, shell, alloy material and sand bed of the present invention.
In the figure: 1-shield, 2-shell, 3-alloy material, 4-sand bed.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in FIG. 1, the invention provides a method for casting and molding a martensitic stainless steel casting, which comprises the following steps:
providing a solid particle-shaped shield 1, preparing a shell 2 according to a pattern shape in a pre-drawn design drawing, burying the shell 2 and an alloy material 3 with the shield 1 after the alloy material 3 melted into a liquid state is poured into the shell 2, and taking out a casting from the shell 2 after the alloy material 3 is condensed to form the casting.
Further, it is preferable that the buried thickness of the shield 1 is not less than 5 mm. Alloy material 3 was a martensitic stainless steel with a designation "1 Cr7Ni 3". The shield 1 is high temperature resistant sand grains screened by a screen with mesh density not exceeding 40 meshes to 70 meshes in advance.
In addition, the casting forming method of the martensitic stainless steel casting further comprises the following steps: the sand bed 4 is provided and the process of burying the shell 2 with the alloy material 3 by the shield 1 is completed within the sand bed 4. The process of pouring the alloy material 3 melted into the liquid state into the shell 2 is completed in the sand bed 4. The shield 1 is pre-contained in a sand bed 4. The sand bed 4 is open at the upper end. The condensation time of the alloy material 3 is not less than 1 h.
According to the technical scheme, the shell and the alloy material are buried by using the high-temperature-resistant sand grains, so that the condensation process of the casting is completed in the closed space, on one hand, the high-temperature-resistant sand grains are good heat conductors, the heat on the surface of the shell is absorbed, the condensation speed of the alloy material is accelerated, the production efficiency is improved, on the other hand, the high-temperature-resistant sand grains shield the mutual relation between the alloy material and the external environment air, the alloy material can be effectively prevented from being oxidized, corresponding oxides can be prevented from being mixed in the casting material, the surface quality of the casting is improved, the metallographic structure of the casting material is prevented from being damaged, and the physical, chemical and service performance of the casting are improved.
Claims (9)
1. A method for casting and molding a martensitic stainless steel casting is characterized by comprising the following steps: the method comprises the following steps:
providing a solid particle-shaped shield (1), preparing a shell (2) according to a pattern shape in a pre-drawn design drawing, burying the shell (2) and an alloy material (3) by using the shield (1) after the alloy material (3) melted into a liquid state is poured into the shell (2), and taking out the casting from the shell (2) after the alloy material (3) is condensed to form the casting.
2. The martensitic stainless steel casting cast molding method according to claim 1, characterized in that: the buried thickness of the shield (1) is not less than 5 mm.
3. The martensitic stainless steel casting cast molding method according to claim 1, characterized in that: the alloy material (3) is martensitic stainless steel with the trade name of 1Cr7Ni 3.
4. The martensitic stainless steel casting cast molding method according to claim 1, characterized in that: the shield (1) is high-temperature resistant sand grains which are screened by a screen with the mesh density not exceeding 40 meshes to 70 meshes in advance.
5. The martensitic stainless steel casting cast molding method according to claim 1, characterized in that: the casting forming method of the martensitic stainless steel casting further comprises the following steps: providing a sand bed (4), wherein the process that the shield (1) buries the shell (2) and the alloy material (3) is completed in the sand bed (4).
6. The martensitic stainless steel casting cast molding method according to claim 1, characterized in that: the casting forming method of the martensitic stainless steel casting further comprises the following steps: providing a sand bed (4), and pouring the alloy material (3) smelted into a liquid state into the shell (2) in the sand bed (4).
7. The martensitic stainless steel casting cast molding method according to claim 5, characterized in that: the protective object (1) is pre-contained in the sand bed (4).
8. The martensitic stainless steel casting cast molding method according to claim 5 or 6, characterized in that: the upper end of the sand bed (4) is provided with an opening.
9. The martensitic stainless steel casting cast molding method according to claim 1, characterized in that: the condensation time of the alloy material (3) is not less than 1 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110915306.XA CN113560496A (en) | 2021-08-10 | 2021-08-10 | Casting forming method for martensitic stainless steel casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110915306.XA CN113560496A (en) | 2021-08-10 | 2021-08-10 | Casting forming method for martensitic stainless steel casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113560496A true CN113560496A (en) | 2021-10-29 |
Family
ID=78171097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110915306.XA Pending CN113560496A (en) | 2021-08-10 | 2021-08-10 | Casting forming method for martensitic stainless steel casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113560496A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0025818A1 (en) * | 1979-09-10 | 1981-04-01 | Dependable-Fordath Inc. | Method of casting shell molds |
| CN101658920A (en) * | 2009-10-10 | 2010-03-03 | 山东泰山钢铁集团有限公司 | Method for preventing carbon steel precision casting from being oxidized when in pouring |
| CN103978156A (en) * | 2014-03-04 | 2014-08-13 | 清华大学 | Method for controlling coagulation and cooling of investment castings |
| CN204122691U (en) * | 2014-10-14 | 2015-01-28 | 贵州安吉航空精密铸造有限责任公司 | A kind of novel casting fusible pattern |
| CN104525921A (en) * | 2014-12-15 | 2015-04-22 | 贵州安吉航空精密铸造有限责任公司 | Process for guaranteeing casting feeding in place during melting casting process |
| CN105344962A (en) * | 2015-12-04 | 2016-02-24 | 南车戚墅堰机车车辆工艺研究所有限公司 | Manufacturing method and device for thin-wall rotary type part |
| CN111633180A (en) * | 2020-06-03 | 2020-09-08 | 贵州安吉航空精密铸造有限责任公司 | Investment casting process for carbon-containing alloy material |
| CN113165054A (en) * | 2018-10-05 | 2021-07-23 | 通用电气公司 | Controlled grain microstructure in cast alloys |
-
2021
- 2021-08-10 CN CN202110915306.XA patent/CN113560496A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0025818A1 (en) * | 1979-09-10 | 1981-04-01 | Dependable-Fordath Inc. | Method of casting shell molds |
| CN101658920A (en) * | 2009-10-10 | 2010-03-03 | 山东泰山钢铁集团有限公司 | Method for preventing carbon steel precision casting from being oxidized when in pouring |
| CN103978156A (en) * | 2014-03-04 | 2014-08-13 | 清华大学 | Method for controlling coagulation and cooling of investment castings |
| CN204122691U (en) * | 2014-10-14 | 2015-01-28 | 贵州安吉航空精密铸造有限责任公司 | A kind of novel casting fusible pattern |
| CN104525921A (en) * | 2014-12-15 | 2015-04-22 | 贵州安吉航空精密铸造有限责任公司 | Process for guaranteeing casting feeding in place during melting casting process |
| CN105344962A (en) * | 2015-12-04 | 2016-02-24 | 南车戚墅堰机车车辆工艺研究所有限公司 | Manufacturing method and device for thin-wall rotary type part |
| CN113165054A (en) * | 2018-10-05 | 2021-07-23 | 通用电气公司 | Controlled grain microstructure in cast alloys |
| CN111633180A (en) * | 2020-06-03 | 2020-09-08 | 贵州安吉航空精密铸造有限责任公司 | Investment casting process for carbon-containing alloy material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107745092B (en) | A kind of production method of 2507 stainless steel pump casting | |
| CN103691912A (en) | Gold base alloy casting blank melting and casting integrated device and utilization method thereof | |
| CN104962782B (en) | There is the internal combustion engine high alloy valve seating manufacturing technology of anticorrosive wear-resisting functions | |
| CN104972063A (en) | Method for manufacturing wax mould for precision investment casting | |
| CN103084542A (en) | Process for casting heat-resistant steel or wear-resistant alloy steel by evaporative pattern casting (EPC) | |
| CN103170600A (en) | Aluminum-silicon alloy brake-separating piece semisolid rheological diecasting forming process | |
| CN111041360B (en) | Wear-resistant hammer head and manufacturing method thereof | |
| CN111633180A (en) | Investment casting process for carbon-containing alloy material | |
| CN113560496A (en) | Casting forming method for martensitic stainless steel casting | |
| CN101966558B (en) | Precision casting method for large castings | |
| CN116713444A (en) | Method for improving ingot yield of master alloy steel ingot for vacuum induction furnace casting rocket | |
| CN110744008A (en) | Mold for casting millstone tile and process for casting millstone tile | |
| CN102121080A (en) | Austenite spheroidal graphite cast iron diffuser and production method thereof | |
| CN105772635B (en) | A kind of production method of cylinder jacket | |
| KR20190071313A (en) | Hard cast alloy bolts and their manufacturing methodsod | |
| CN1311938C (en) | Continuous double-metal cast forming method | |
| US20010052662A1 (en) | Holding furnace particularly for vacuum diecasting apparatus | |
| GB1275014A (en) | A composite material and a method of making same | |
| JPS5826402B2 (en) | Manufacturing method for iron-based sintered parts | |
| Ha et al. | Analysis and prevention of dent defects formed during strip casting of twin-induced plasticity steels | |
| CN106552937A (en) | A kind of method for exhausting of powder pressing forming | |
| CN108220869A (en) | A kind of carburization process of excavator bucket teeth | |
| CN107699826A (en) | Environmentally friendly anticracking Anti-oxidation copper product and its moulding process | |
| CN117305648A (en) | Preparation method of low-cost copper alloy cast ingot | |
| JP6175345B2 (en) | Method for producing graphite spheroidizing agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211029 |