CN108838339A - A kind of method of salt core die casting - Google Patents
A kind of method of salt core die casting Download PDFInfo
- Publication number
- CN108838339A CN108838339A CN201810877770.2A CN201810877770A CN108838339A CN 108838339 A CN108838339 A CN 108838339A CN 201810877770 A CN201810877770 A CN 201810877770A CN 108838339 A CN108838339 A CN 108838339A
- Authority
- CN
- China
- Prior art keywords
- salt core
- die casting
- casting
- salt
- die
- 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
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Classifications
-
- 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
- B22C9/105—Salt cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
Abstract
The present invention relates to die casting field more particularly to salt core die casting, the present invention mainly uses die-casting process that salt core is made, then is put into die casting by soluble salt core and aluminum die casting is made, and qualified aluminum die casting is made finally by pickling is dry.The present invention can solve the problem of special-shaped inner cavity casting of band is unable to die casting, and using salt core made from die-casting process, compact structure is not easy aluminising, quickly dissolves, and coring is convenient, and obtained casting quality is good.
Description
Technical field
The present invention relates to die casting fields, and in particular to a kind of method of salt core die casting.
Background technique
Compression casting abbreviation die casting, be it is a kind of molten alloy liquid is poured into the pressure chamber of die casting, to fill mould at a high speed
The type chamber of tool, and solidify aluminium alloy under stress and form the casting method of casting.Die casting is mainly characterized by high pressure and height
Speed, but common pressure casting method is restricted by some product special shapes.Such as：Automobile engine cylinder head, air intake branch etc.,
All containing curved air flue, oil duct, water channel etc. inside these components, can not on active and inactive mold and sliding block straight forming, therefore
Also it just cannot achieve Die Casting.
Summary of the invention
Place, the present invention provide a kind of method of salt core die casting in view of the deficiency of the prior art, solve
The product of special tectonic be difficult to depoling can not Die Casting the problem of, improve product quality.
In order to achieve the above object, the invention adopts the following technical scheme：
A kind of method of salt core die casting, which is characterized in that include the following steps：
S1, salt cored structure three-dimensional modeling；
S2, the design of salt core mold and the row's of pouring conceptual design；
S3, NaCl, Na2CO3, CaCl2 are pressed 49:50:1 mass ratio melts in holding furnace, obtains fuse salt core
Casting liquid；
S4, die cast in salt core mold is mapped to by the casting of salt core is hydraulic with die casting machine, removal running channel clears up ingate, obtains
To salt core；
S5, salt core is put into product die casting, molds injection, take out casting；
S6, the casting of taking-up is boiled one hour in the hot water dissolved with dilute hydrochloric acid, takes out casting after the dissolution of salt core, cleans
Drying obtains castings.
Further, in the step S1 there is convenient for positioning and the core head structure compressed design on salt cored structure.
Further, in the step S3, the furnace temperature of the holding furnace is set as 500 DEG C~660 DEG C.
Further, in the step S5, the mould temperature of setting product die casting is 200~250 DEG C.
Further, the concentration of dilute hydrochloric acid described in the step S6 is 4~5mol/L, and the ratio of hot water and dilute hydrochloric acid is
1500：1~2000：1.
Beneficial effects of the present invention include：Salt core is manufactured using die casting, compact structure is not easy aluminising, and passes through soda acid
Quickly dissolution is neutralized, coring is convenient.
Specific embodiment
It is next combined with specific embodiments below that present invention be described in more detail.
Salt cored structure is not fine and close when to solve salt core die casting in the prior art, is easy aluminising, and technical requirements are not achieved in casting,
The present invention provides a kind of method of salt core die casting, includes the following steps：
S1, according to core cavity structure, to salt cored structure three-dimensional modeling, and then obtain the structure of salt core, it shall be noted that
It is to need to design on salt cored structure convenient for positioning and compressing the core head structure of salt core；
S2, the mold of casting salt core is designed again according to the structure of salt core, while the row's of pouring conceptual design；
S3, salt core ingredient using NaCl, Na2CO3, CaCl2 and press 49:50:1 mass ratio 500 DEG C of furnace temperature~
It is melted in 660 DEG C of holding furnace, furnace temperature would generally be heated to well 660 DEG C to melt effect, further melted
Salt core casting liquid；
S4, salt core hydraulic be mapped to of casting is pre-designed die cast in the salt core mold made with die casting machine, is opened,
Running channel is removed after cooling, is cleared up ingate, is obtained salt core；
S5, salt core is put into product die casting, and keeps mould temperature at 200~250 DEG C, mold injection, take out casting；
S6, the casting of taking-up is boiled one hour in the hot water dissolved with dilute hydrochloric acid, takes out casting after the dissolution of salt core, cleans
Drying obtains castings.The concentration of the dilute hydrochloric acid is 4~5mol/L, and the ratio of hot water and dilute hydrochloric acid is 1500：1~
2000：1, due to, containing alkalinity, being dissolved more rapidly by the neutralization of dilute hydrochloric acid, and will not cause to damage to casting in the ingredient of salt core
Wound.
It is provided for the embodiments of the invention technical solution above to be described in detail, specific case used herein
The principle and embodiment of the embodiment of the present invention are expounded, the explanation of above embodiments is only applicable to help to understand this
The principle of inventive embodiments；At the same time, for those skilled in the art, according to an embodiment of the present invention, in specific embodiment party
There will be changes in formula and application range, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (5)
1. a kind of method of salt core die casting, which is characterized in that include the following steps：
S1, salt cored structure three-dimensional modeling；
S2, the design of salt core mold and the row's of pouring conceptual design；
S3, NaCl, Na2CO3, CaCl2 are pressed 49:50:1 mass ratio melts in holding furnace, obtains the casting of fuse salt core
Liquid；
S4, die cast in salt core mold is mapped to by the casting of salt core is hydraulic with die casting machine, removal running channel clears up ingate, obtains salt
Core；
S5, salt core is put into product die casting, molds injection, take out casting；
S6, the casting of taking-up is boiled one hour in the hot water dissolved with dilute hydrochloric acid, takes out casting, cleaning, drying after the dissolution of salt core
Obtain castings.
2. a kind of method of salt core die casting according to claim 1, it is characterised in that：In the step S1 on salt cored structure
Design has convenient for positioning and the core head structure compressed.
3. a kind of method of salt core die casting according to claim 1, it is characterised in that：In the step S3, the heat preservation
The furnace temperature of furnace is set as 500 DEG C~660 DEG C.
4. a kind of method of salt core die casting according to claim 1, it is characterised in that：In the step S5, product is set
The mould temperature of die casting is 200~250 DEG C.
5. a kind of method of salt core die casting according to claim 1, it is characterised in that：Dilute hydrochloric acid described in the step S6
Concentration be 4~5mol/L, the ratio of hot water and dilute hydrochloric acid is 1500：1~2000：1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810877770.2A CN108838339A (en) | 2018-08-03 | 2018-08-03 | A kind of method of salt core die casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810877770.2A CN108838339A (en) | 2018-08-03 | 2018-08-03 | A kind of method of salt core die casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108838339A true CN108838339A (en) | 2018-11-20 |
Family
ID=64195286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810877770.2A Pending CN108838339A (en) | 2018-08-03 | 2018-08-03 | A kind of method of salt core die casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108838339A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111940694A (en) * | 2020-07-21 | 2020-11-17 | 中国第一汽车股份有限公司 | Method for manufacturing water-soluble salt core for high-pressure casting |
| CN112222363A (en) * | 2020-10-20 | 2021-01-15 | 淄博建宗复合材料有限公司 | Ceramic salt core formed by one-step die-casting through molten liquid and preparation method thereof |
| CN114558980A (en) * | 2022-03-31 | 2022-05-31 | 安徽工业大学 | Method for preparing water-soluble salt core through semi-solid die casting and using method of water-soluble salt core |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5215446B2 (en) * | 1974-04-19 | 1977-04-30 | ||
| CN1365306A (en) * | 1999-07-06 | 2002-08-21 | 株式会社技术连合 | Disintegrative core for high pressure casting, method for manufacturing the same and method for extracting the same |
| CN102159342A (en) * | 2008-07-18 | 2011-08-17 | 陶瓷技术有限责任公司 | Salt-based cores and method for production thereof |
| CN106670376A (en) * | 2016-12-20 | 2017-05-17 | 华中科技大学 | High-strength composite salt core material for low-melting-point alloy casting, salt core and preparation method |
| CN108237205A (en) * | 2016-12-23 | 2018-07-03 | 现代自动车株式会社 | The salt core and its manufacturing method of die casting are carried out with aluminium |
-
2018
- 2018-08-03 CN CN201810877770.2A patent/CN108838339A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5215446B2 (en) * | 1974-04-19 | 1977-04-30 | ||
| CN1365306A (en) * | 1999-07-06 | 2002-08-21 | 株式会社技术连合 | Disintegrative core for high pressure casting, method for manufacturing the same and method for extracting the same |
| CN102159342A (en) * | 2008-07-18 | 2011-08-17 | 陶瓷技术有限责任公司 | Salt-based cores and method for production thereof |
| CN106670376A (en) * | 2016-12-20 | 2017-05-17 | 华中科技大学 | High-strength composite salt core material for low-melting-point alloy casting, salt core and preparation method |
| CN108237205A (en) * | 2016-12-23 | 2018-07-03 | 现代自动车株式会社 | The salt core and its manufacturing method of die casting are carried out with aluminium |
Non-Patent Citations (1)
| Title |
|---|
| 李魁盛: "《铸造工艺及原理》", 30 June 1989, 机械工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111940694A (en) * | 2020-07-21 | 2020-11-17 | 中国第一汽车股份有限公司 | Method for manufacturing water-soluble salt core for high-pressure casting |
| CN112222363A (en) * | 2020-10-20 | 2021-01-15 | 淄博建宗复合材料有限公司 | Ceramic salt core formed by one-step die-casting through molten liquid and preparation method thereof |
| CN114558980A (en) * | 2022-03-31 | 2022-05-31 | 安徽工业大学 | Method for preparing water-soluble salt core through semi-solid die casting and using method of water-soluble salt core |
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Application publication date: 20181120 |