CN104148583A - Investment casting method - Google Patents
Investment casting method Download PDFInfo
- Publication number
- CN104148583A CN104148583A CN201410410514.4A CN201410410514A CN104148583A CN 104148583 A CN104148583 A CN 104148583A CN 201410410514 A CN201410410514 A CN 201410410514A CN 104148583 A CN104148583 A CN 104148583A
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- CN
- China
- Prior art keywords
- wax
- shell
- casting method
- investment casting
- pattern
- 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
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000005495 investment casting Methods 0.000 title claims abstract description 19
- 239000004576 sand Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 7
- 235000011837 pasties Nutrition 0.000 claims abstract description 6
- 239000011819 refractory material Substances 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 17
- 239000001993 wax Substances 0.000 claims description 9
- 208000034189 Sclerosis Diseases 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000003618 dip coating Methods 0.000 claims description 5
- 235000021355 Stearic acid Nutrition 0.000 claims description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 4
- 239000012188 paraffin wax Substances 0.000 claims description 4
- 239000008117 stearic acid Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 235000013339 cereals Nutrition 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- QFXZANXYUCUTQH-UHFFFAOYSA-N ethynol Chemical group OC#C QFXZANXYUCUTQH-UHFFFAOYSA-N 0.000 claims description 3
- 230000009970 fire resistant effect Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 235000013312 flour Nutrition 0.000 claims description 2
- 239000010440 gypsum Substances 0.000 claims description 2
- 229910052602 gypsum Inorganic materials 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- -1 stearic acid compound Chemical class 0.000 claims description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 2
- 238000005266 casting Methods 0.000 abstract description 12
- 239000002245 particle Substances 0.000 abstract 2
- 238000007598 dipping method Methods 0.000 abstract 1
- 239000003973 paint Substances 0.000 abstract 1
- 239000003110 molding sand Substances 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention provides an investment casting method. Firstly, a pressure mold is produced; then, a wax mold is pressed, and pasty wax is pressed in the pressure mold by pressure and taken out after being cooled and condensed; a refractory material coats the surface of the wax mold to form a rigid shell through main steps of paint dipping, sand spreading and hardening; the process of forming the rigid shell is repeated again and again to form the hard refractory shell with the thickness of 5-10 mm; when the sand spreading is performed, the particle size of later layers of sand is greater than the particle size of first and second layers of sand; and after the rigid shell is formed, the wax mold is dipped in water of 85-95 DEG C with a gate facing upwards so that the wax therein is melted to float on the water surface, or the shell is put in a high-pressure kettle with the gate facing downwards, and steam of 0.2-0.5 MPa is fed to the high-pressure kettle so that the wax is melted and led out. The investment casting method is precise in casting mold, has no parting surface, and can cast high-melting-point alloys and difficultly cut alloys; and the cavity surface is smooth, so that the preciseness and surface quality of castings are excellent.
Description
Technical field
The present invention relates to a kind of investment casting method, belong to field of mechanical technique.
Background technology
In prior art, general medium-sized and small enterprises adopt sand mould casting method for the more complicated part of relative planform, although sand mould casting method can adapt to various complex-shaped parts, but its produced product quality is bad, dimensional accuracy is also lower, on product, there is die joint, be difficult to adapt to the manufacturing requirement of modern machines.
Summary of the invention
The invention provides a kind of investment casting method, can overcome the above defect, without molding sand, there is no die joint, dimensional accuracy is high, and quality is good.
For solving above technical problem, the invention provides following technical scheme: a kind of investment casting method, comprises the following steps: first manufacture die mould, then suppress wax-pattern, pasty state wax material is pressed into die mould with pressure, cooling until it, take out after solidifying; Be coated with refractory material on wax-pattern surface and form firm shell, mainly comprise dip-coating material, stucco and sclerosis, the process that forms firm shell is repeated multiple times, to form the fire-resistant shell of sclerosis that 5-10mm is thick, when stucco, after first and second layer of sand grains used footpath of size ratio of which floor sand used large; Be immersed in upward in the water of 85-95 degree at the wax-pattern cast gate forming after firm shell, make wax material fusing wherein, keep afloat, or shell is watered to mouth down be placed in autoclave, to the steam that passes into 0-2-0.5MPa in autoclave, wax material is melted out; Shell after dewaxing is sent in heating furnace, be heated to 800-1000 DEG C and carry out roasting; Shell after dewaxing is placed in to iron case, tamps reinforcing shell with coarse sand around; Cast while hot after roasting is come out of the stove, after foundry goods cooled and solidified, destroys shell to take out foundry goods, with oxy-acetylene flame excision water, rising head.
This investment casting method the present invention relates to, casting mold precision, does not have die joint, pourable high-melting-point alloy and difficult smear metal alloy, mold cavity surface is bright and clean, therefore casting accuracy and surface quality are good.
Detailed description of the invention
A kind of investment casting method, comprises the following steps: a, first manufacture die mould, then suppress wax-pattern, pasty state wax material is pressed into die mould with pressure, cooling until it, solidify after taking-up; Be coated with refractory material on wax-pattern surface and form firm shell, mainly comprise dip-coating material, stucco and sclerosis, the process that forms firm shell is repeated multiple times, to form the fire-resistant shell of sclerosis that 5-10mm is thick, when stucco, after first and second layer of sand grains used footpath of size ratio of which floor sand used large; Be immersed in upward in the water of 85-95 degree at the wax-pattern cast gate forming after firm shell, make wax material fusing wherein, keep afloat, or shell is watered to mouth down be placed in autoclave, to the steam that passes into 0-2-0.5MPa in autoclave, wax material is melted out; Shell after dewaxing is sent in heating furnace, be heated to 800-1000 DEG C and carry out roasting; Shell after dewaxing is placed in to iron case, tamps reinforcing shell with coarse sand around; Cast while hot after roasting is come out of the stove, after foundry goods cooled and solidified, destroys shell to take out foundry goods, with oxy-acetylene flame excision water, rising head.
Described die mould is made up through machining of steel, copper or aluminium; Described die mould is made up of alloy, plastics or gypsum.
Wherein the temperature of cast is 600-700 DEG C.
The material of described wax-pattern comprises paraffin, stearic acid or rosin; Described wax-pattern is 50% paraffin and 50% stearic acid compound.
Described dip-coating material is that wax-pattern is placed in the pasty mixture being made up of silica flour, binder and is soaked.
Described stucco is the wax-pattern soaking evenly to be adhered to one deck quartz sand form one deck shell.
The sclerosis of shell adopts dry or chemicosolidifying.
Casting is compared with molding sand, and model casting has following features: bond material refractoriness is high, the alloy of pourable high-melting-point alloy and difficult cutting, as potassium steel, casting mold precision, does not have die joint, mold cavity surface is very bright and clean, aunt's casting accuracy and surface quality are good, and casting mold is poured into a mould after preheating, can produce complex-shaped thin-wall part, minimum wall thickness (MINI W.) can reach 0.7mm, production lot is unrestricted, has both adapted to produce by batch, adapts to again single-piece production.
Model casting is mainly in order to the production of the small complex parts such as turbine blade, impeller of pump, complicated smear metal instrument, auto parts and components.
Detailed description of the invention of the present invention does not form the restriction to the application's scope; every within the spirit and principle of the present invention design, any amendment that one of skill in the art can make, be equal to and replace and within improvement etc. all should be included in protection scope of the present invention.
Claims (9)
1. an investment casting method, is characterized in that, described investment casting method comprises the following steps: a, first manufacture die mould, then suppress wax-pattern, pasty state wax material is pressed into die mould with pressure, and cooling until it, take out after solidifying; B, be coated with refractory material on wax-pattern surface and form firm shell, mainly comprise dip-coating material, stucco and sclerosis, the process that forms firm shell is repeated multiple times, to form the fire-resistant shell of sclerosis that 5-10mm is thick, when stucco, after first and second layer of sand grains used footpath of size ratio of which floor sand used large; C, be immersed in upward in the water of 85-95 degree at the wax-pattern cast gate forming after firm shell, make wax material fusing wherein, keep afloat, or shell is watered to mouth down be placed in autoclave, to the steam that passes into 0-2-0.5MPa in autoclave, wax material is melted out; D, by dewaxing after shell send in heating furnace, be heated to 800-1000 DEG C and carry out roasting; E, by dewaxing after shell be placed in iron case, tamp reinforcing shell with coarse sand around; F, cast while hot after roasting is come out of the stove, after foundry goods cooled and solidified, destroy shell to take out foundry goods, with oxy-acetylene flame excision water, rising head.
2. a kind of investment casting method according to claim 1, is characterized in that, described die mould is made up through machining of steel, copper or aluminium.
3. a kind of investment casting method according to claim 1, is characterized in that, described die mould is made up of alloy, plastics or gypsum.
4. a kind of investment casting method according to claim 1, is characterized in that, wherein the temperature of cast is 600-700 DEG C.
5. a kind of investment casting method according to claim 1, is characterized in that, the material of described wax-pattern comprises paraffin, stearic acid or rosin.
6. a kind of investment casting method according to claim 1 or 5, is characterized in that, the paraffin that described wax-pattern is 50% and 50% stearic acid compound.
7. a kind of investment casting method according to claim 1, is characterized in that, described dip-coating material is that wax-pattern is placed in the pasty mixture being made up of silica flour, binder and is soaked.
8. a kind of investment casting method according to claim 1, is characterized in that, described stucco is the wax-pattern soaking evenly to be adhered to one deck quartz sand form one deck shell.
9. a kind of investment casting method according to claim 1, is characterized in that, the sclerosis of shell adopts dry or chemicosolidifying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410410514.4A CN104148583A (en) | 2014-08-20 | 2014-08-20 | Investment casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410410514.4A CN104148583A (en) | 2014-08-20 | 2014-08-20 | Investment casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104148583A true CN104148583A (en) | 2014-11-19 |
Family
ID=51874314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410410514.4A Pending CN104148583A (en) | 2014-08-20 | 2014-08-20 | Investment casting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104148583A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759590A (en) * | 2015-03-19 | 2015-07-08 | 宁海燕 | Investment casting method |
| CN105033182A (en) * | 2015-08-07 | 2015-11-11 | 浙江福瑞科流控机械有限公司 | Waterglass-process precise casting process |
| CN105057594A (en) * | 2015-07-30 | 2015-11-18 | 宁波天业精密铸造有限公司 | Precise investment casting technology |
| CN105983657A (en) * | 2015-02-04 | 2016-10-05 | 河南科丰新材料有限公司 | Method for forming chrome bronze casting through investment casting under vacuum environment |
| CN106583652A (en) * | 2017-01-16 | 2017-04-26 | 宁国市华成金研科技有限公司 | Investment casting method |
| CN106734915A (en) * | 2017-01-05 | 2017-05-31 | 重庆市九明机械制造有限公司 | The precision casting process of casting |
| CN107030256A (en) * | 2017-03-27 | 2017-08-11 | 五星机械（镇江）有限公司 | A kind of casting method of metal implements |
| CN107243600A (en) * | 2017-04-01 | 2017-10-13 | 东风精密铸造安徽有限公司 | A kind of manufacturing process of the wax material module of investment-casting |
| CN107695295A (en) * | 2017-10-23 | 2018-02-16 | 安徽金兰压铸有限公司 | A kind of casting processing method of fusible pattern |
| CN112355239A (en) * | 2020-11-03 | 2021-02-12 | 中信戴卡股份有限公司 | Preparation method of foamed aluminum special-shaped part |
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|---|---|---|---|---|
| JPH08280714A (en) * | 1995-04-19 | 1996-10-29 | Kiyuutai Dento Seramu Kk | Dewaxing and predrying method of investment casting mold for dental lost wax casting method |
| CN1683099A (en) * | 2005-02-02 | 2005-10-19 | 哈尔滨鑫润精铸工业有限公司 | Fine casting method for super long lower pressure partition guide blade of turbine in stainless steel investment mold |
| CN103252449A (en) * | 2013-05-08 | 2013-08-21 | 青岛钰鑫车辆工程有限公司 | Production method of composite material stirring wing |
| CN103273010A (en) * | 2013-05-06 | 2013-09-04 | 无锡山发精铸科技有限公司 | Near net shape casting method of fine grain block casting turbine for lightweight gas turbine |
| CN103537649A (en) * | 2012-10-29 | 2014-01-29 | 洛阳希诺能源科技有限公司 | Composite casting technology of excavator bucket teeth |
| CN103706760A (en) * | 2014-01-06 | 2014-04-09 | 安徽厚林精密金属科技有限公司 | Method for precisely casting top cover of mincing machine |
-
2014
- 2014-08-20 CN CN201410410514.4A patent/CN104148583A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH08280714A (en) * | 1995-04-19 | 1996-10-29 | Kiyuutai Dento Seramu Kk | Dewaxing and predrying method of investment casting mold for dental lost wax casting method |
| CN1683099A (en) * | 2005-02-02 | 2005-10-19 | 哈尔滨鑫润精铸工业有限公司 | Fine casting method for super long lower pressure partition guide blade of turbine in stainless steel investment mold |
| CN103537649A (en) * | 2012-10-29 | 2014-01-29 | 洛阳希诺能源科技有限公司 | Composite casting technology of excavator bucket teeth |
| CN103273010A (en) * | 2013-05-06 | 2013-09-04 | 无锡山发精铸科技有限公司 | Near net shape casting method of fine grain block casting turbine for lightweight gas turbine |
| CN103252449A (en) * | 2013-05-08 | 2013-08-21 | 青岛钰鑫车辆工程有限公司 | Production method of composite material stirring wing |
| CN103706760A (en) * | 2014-01-06 | 2014-04-09 | 安徽厚林精密金属科技有限公司 | Method for precisely casting top cover of mincing machine |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105983657A (en) * | 2015-02-04 | 2016-10-05 | 河南科丰新材料有限公司 | Method for forming chrome bronze casting through investment casting under vacuum environment |
| CN104759590A (en) * | 2015-03-19 | 2015-07-08 | 宁海燕 | Investment casting method |
| CN105057594A (en) * | 2015-07-30 | 2015-11-18 | 宁波天业精密铸造有限公司 | Precise investment casting technology |
| CN105033182A (en) * | 2015-08-07 | 2015-11-11 | 浙江福瑞科流控机械有限公司 | Waterglass-process precise casting process |
| CN106734915A (en) * | 2017-01-05 | 2017-05-31 | 重庆市九明机械制造有限公司 | The precision casting process of casting |
| CN106583652A (en) * | 2017-01-16 | 2017-04-26 | 宁国市华成金研科技有限公司 | Investment casting method |
| CN106583652B (en) * | 2017-01-16 | 2019-01-22 | 宁国市华成金研科技有限公司 | A kind of investment casting method |
| CN107030256A (en) * | 2017-03-27 | 2017-08-11 | 五星机械（镇江）有限公司 | A kind of casting method of metal implements |
| CN107243600A (en) * | 2017-04-01 | 2017-10-13 | 东风精密铸造安徽有限公司 | A kind of manufacturing process of the wax material module of investment-casting |
| CN107695295A (en) * | 2017-10-23 | 2018-02-16 | 安徽金兰压铸有限公司 | A kind of casting processing method of fusible pattern |
| CN112355239A (en) * | 2020-11-03 | 2021-02-12 | 中信戴卡股份有限公司 | Preparation method of foamed aluminum special-shaped part |
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| C06 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141119 |
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| RJ01 | Rejection of invention patent application after publication |