CN109624027A - A kind of manufacturing method of high-pressure casting ceramic mold - Google Patents
A kind of manufacturing method of high-pressure casting ceramic mold Download PDFInfo
- Publication number
- CN109624027A CN109624027A CN201910109662.5A CN201910109662A CN109624027A CN 109624027 A CN109624027 A CN 109624027A CN 201910109662 A CN201910109662 A CN 201910109662A CN 109624027 A CN109624027 A CN 109624027A
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- CN
- China
- Prior art keywords
- mold
- sintered
- under
- conditions
- die cavity
- 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
- 239000000919 ceramic Substances 0.000 title claims abstract description 16
- 238000005266 casting Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 8
- 238000005058 metal casting Methods 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 238000007493 shaping process Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000003801 milling Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 11
- 239000002184 metal Substances 0.000 abstract description 10
- 229910052751 metal Inorganic materials 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 6
- 238000005245 sintering Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract description 3
- CVOFKRWYWCSDMA-UHFFFAOYSA-N 2-chloro-n-(2,6-diethylphenyl)-n-(methoxymethyl)acetamide;2,6-dinitro-n,n-dipropyl-4-(trifluoromethyl)aniline Chemical compound CCC1=CC=CC(CC)=C1N(COC)C(=O)CCl.CCCN(CCC)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O CVOFKRWYWCSDMA-UHFFFAOYSA-N 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract description 2
- 238000003672 processing method Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 239000002131 composite material Substances 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 229910001018 Cast iron Inorganic materials 0.000 description 7
- 229910010293 ceramic material Inorganic materials 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mining & Mineral Resources (AREA)
- Ceramic Products (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Proposed by the present invention is a kind of manufacturing method of high-pressure casting ceramic mold.Raw material is made using β type silicon nitride powder, ceramic raw material is encased in processing mold, the mold with die cavity is suppressed under 150MPa pressure, die cavity is equipped in mold, die cavity is used for metal casting, it is taken out from processing mold, 4h is dried under the conditions of 150 DEG C of temperature, die blank is subjected to mechanical shaping processing after drying, then it is pre-sintered under the conditions of 800 DEG C of temperature, sintered mold is refined to by milling machine and is sized, then in reaction-sintered furnace under the conditions of 1600 DEG C, pressure 2Mpa, sinter molding.Again in reaction-sintered furnace, sinter molding under the conditions of 1600 DEG C of temperature, pressure 2Mpa.Since the present invention makees raw material using high nitrogen composite ceramics β type silicon nitride powder, through overmolding dry be pre-sintered, machining and sintering process complete, made mold color be black, when carrying out metal casting can non-sticky metal melt liquid, and good heat preservation performance, long service life.It is suitable for the die processing method application for melting liquid casting as metal.
Description
Technical field
Proposed by the present invention is a kind of manufacturing method for high-pressure casting ceramic mold that field of machining uses.
Background technique
In metal casting, need using mold, usually cast iron materials are made.In die casting, since cast iron melts
Liquid temperature is excessively high, mold can be made to be deformed.Since Cast Iron Holding performance is poor, casting is easy to produce stomata, slag inclusion and carbon black etc.
Defect.When metal being melted liquid being filled into mold cavity, needs to melt liquid to filling metal and pressurize, thus prevent the production of sand holes
It is raw.Since under the action of high pressure melts liquid, general cast iron die will be replaced using 3 shifts once, so service life is short.
And cast iron die poor thermal insulation property, it influences metal and melts the mobility of liquid, to influence the quality of cast product.
Summary of the invention
In order to overcome cast iron die there are the shortcomings that, the invention proposes a kind of manufacturers of high-pressure casting ceramic mold
Method.The technical issues of this method is formed by Machining of Ceramics, solves the processing of castable ceramic mold.
The solution adopted by the present invention to solve the technical problem is that:
Raw material is made using β type silicon nitride powder, ceramic raw material is encased in processing mold, tool is suppressed under 150MPa pressure
There is the mold of die cavity, die cavity is equipped in mold, die cavity is used for metal casting, takes out from processing mold, in 150 DEG C of temperature
Under the conditions of dry 4h, after drying by die blank carry out mechanical shaping processing, be then pre-sintered under the conditions of 800 DEG C of temperature,
Sintered mold is refined to by milling machine and is sized, then reaction-sintered furnace under the conditions of 1600 DEG C, pressure 2Mpa
It is interior, sinter molding.
Good effect: it uses β type silicon nitride powder to make raw material due to of the invention, dries through overmolding and add with pre-sintering, machinery
Work and sintering process are completed, and good with heat resistance due to using β type silicon nitride powder, thermal conductivity is high, can be resistant to rapid heat cycle,
Solves mold thermal shock technical problem easy to crack；Made mold color is black；Made mold is carrying out
When metal casting can non-sticky molten metal, and good heat preservation performance, long service life.It is suitable for the mold for melting liquid casting as metal
Processing method application.
Detailed description of the invention
Fig. 1 is inventive die shape graph.
In figure, 1. molds, 2. die cavitys.
Specific embodiment
Raw material is made using β type silicon nitride powder, ceramic raw material is encased in processing mold, is pressed under 150MPa pressure
For the mold 1 with die cavity, mold is interior to be equipped with die cavity 2, and die cavity is used for metal casting, takes out from processing mold, 150
4h is dried under the conditions of DEG C temperature, die blank is subjected to mechanical shaping processing after drying, it is then pre- under the conditions of 800 DEG C of temperature
Sintering, sintered mold are refined to by milling machine and are sized, then reaction under the conditions of 1600 DEG C, pressure 2Mpa is burnt
In freezing of a furnace, sinter molding.
The ceramic mold is the mold for metal casting, due to using ceramic material manufacture mold, with use cast iron
The mold performance of material manufacture is different, produces the effect of technological progress.Specifically be exactly the replacement of mold materials, therewith plus
Work method is innovated, and good using effect is obtained.
Performance:
The ceramic mold can not only high temperature resistant and not viscous metal melt liquid, can be resistant to metal and melt liquid impact, compression strength is high, protects
Warm nature can be good.Compression strength can reach 30Mpa, density 3.3g/cm3。
The ceramic material mold is shaped piece, and hardness and strength are very high after ceramic material sinter molding, but toughness is low, because
This during processing, easily there is a phenomenon where collapsing porcelain, therefore by the way of being pre-sintered so that reduce product hardness intensity,
To reduce difficulty of processing, molding is sintered after machine-shaping again.
Advantage:
It can combine closely with cast member, thermal expansion coefficient is small, and ceramic mold is not easy to deform and damages, and extends using the longevity
Life, and the ceramic material cannot not have the advantages that viscously that metal melts liquid, and high temperature resistant also, and good heat insulating can be improved casting
Quality.Due to using β type silicon nitride powder, have heat resistance good, thermal conductivity is high, can be resistant to rapid heat cycle, solves mold urgency
Cold anxious heat technical problem easy to crack.
Claims (1)
1. a kind of manufacturing method of high-pressure casting ceramic mold, it is characterized in that: raw material is made using β type silicon nitride powder, it will be ceramic former
Material is encased in processing mold, and the mold (1) with die cavity is suppressed under 150MPa pressure, is equipped with die cavity in mold
(2), die cavity is used for metal casting, takes out from processing mold, dries 4h under the conditions of 150 DEG C of temperature, by mold hair after drying
Base carries out mechanical shaping processing, is then pre-sintered under the conditions of 800 DEG C of temperature, and sintered mold is finished by milling machine
To being sized, then in reaction-sintered furnace under the conditions of 1600 DEG C, pressure 2Mpa, sinter molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910109662.5A CN109624027A (en) | 2019-02-11 | 2019-02-11 | A kind of manufacturing method of high-pressure casting ceramic mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910109662.5A CN109624027A (en) | 2019-02-11 | 2019-02-11 | A kind of manufacturing method of high-pressure casting ceramic mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109624027A true CN109624027A (en) | 2019-04-16 |
Family
ID=66065144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910109662.5A Pending CN109624027A (en) | 2019-02-11 | 2019-02-11 | A kind of manufacturing method of high-pressure casting ceramic mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109624027A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021191213A1 (en) * | 2020-03-23 | 2021-09-30 | Wienerberger Ag | Method for producing ceramic wares |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789204A (en) * | 2004-12-17 | 2006-06-21 | 德国贝格有限公司 | Herbst bremer goldschlaegerei |
| KR20090114817A (en) * | 2008-04-30 | 2009-11-04 | 이부락 | Ceramic Mold Manufacturing Method |
-
2019
- 2019-02-11 CN CN201910109662.5A patent/CN109624027A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789204A (en) * | 2004-12-17 | 2006-06-21 | 德国贝格有限公司 | Herbst bremer goldschlaegerei |
| KR20090114817A (en) * | 2008-04-30 | 2009-11-04 | 이부락 | Ceramic Mold Manufacturing Method |
Non-Patent Citations (2)
| Title |
|---|
| 梁金生等: "反应烧结氮化硅陶瓷模具材料的研究", 《中国陶瓷工业》 * |
| 胡隆伟，叶文君主编: "《紧固材料手册》", 31 December 2014, 中国宇航出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021191213A1 (en) * | 2020-03-23 | 2021-09-30 | Wienerberger Ag | Method for producing ceramic wares |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190416 |
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| RJ01 | Rejection of invention patent application after publication |