CN106903274A - A kind of foundry cast iron mould covers sand honeycomb fashion exhaust sandbox - Google Patents
A kind of foundry cast iron mould covers sand honeycomb fashion exhaust sandbox Download PDFInfo
- Publication number
- CN106903274A CN106903274A CN201710099539.0A CN201710099539A CN106903274A CN 106903274 A CN106903274 A CN 106903274A CN 201710099539 A CN201710099539 A CN 201710099539A CN 106903274 A CN106903274 A CN 106903274A
- Authority
- CN
- China
- Prior art keywords
- mould
- exhaust
- sandbox
- sand
- cast iron
- 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
- B22C21/00—Flasks; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/068—Semi-permanent moulds
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
Sand honeycomb fashion exhaust sandbox, including device for sand coated iron mould cope mould are covered the invention discloses a kind of foundry cast iron mould, the device for sand coated iron mould cope mould is provided with several steam vents.The present invention devises the steam vent of uneven distribution on device for sand coated iron mould cope mould, and to die cavity, core and in molten iron, the exhaust of gas serves chilling and Quick uniform scavenging action in product casting process.
Description
Technical field
The present invention relates to cast sandbox technical field of mold, especially a kind of foundry cast iron mould covers sand honeycomb fashion exhaust sandbox.
Background technology
Turbocharger sub-unit turbocharger housing is complex-shaped, and wall thickness variation is larger, thick part 12mm, thin
Part only has 3mm, and casting the product needed material has good casting character.The product uses high-nickel austenite nodular cast iron
Through device for sand coated iron mould sandbox casting form, overtemperature of the high-nickel austenite nodular cast iron molten iron in stove be generally greater than 1680 DEG C~
1720 DEG C, 1520 DEG C~1560 DEG C of suitable pouring temperature.According to product and the particularity of material, molten iron needs in cavity filling process
Anxious exhaust and chilling, so casting turbocharger housing is using the iron die sand casting process side with permanent mold casting feature
Method.
Device for sand coated iron mould casts cast iron die cavity conduct of the turbocharger sub-unit turbocharger housing with the nearly shape of profile
Sandbox swage（One mould eight）, one layer of precoated sand close-over of 4~10mm is covered on the swage of nearly shape and forms casting mold, for pouring into a mould whirlpool
Wheel pressurizer shell casting.The characteristics of Sand-Faced Metal Mould Casting has permanent mold casting, the casting mold of iron is in molten metal crystallization process
There is obvious chilling to act on, can refine casting crystalline grain degree, so as to improve the comprehensive strength of casting.
Device for sand coated iron mould sand box mould such as Fig. 1 before device for sand coated iron mould casting turbocharger sub-unit turbocharger housing
Shown, the exhaust of core is carried out by being vented piece 1 in Fig. 1；Exhaust in molten iron is carried out by exhaust piece 2.Because die cavity
The circulation of middle molten iron and it is vented bad, during turbocharger housing hot pouring, forms slag inclusion, stomata and cold shut defect, directly
The performance of product is influenceed, causes product rejection, percent defective to be up to 30%.Reason is that the product uses high-nickel austenite spheroidal graphite
Iron casting is formed, and substantial amounts of nickel is contained in high-nickel austenite nodular cast iron（34~36%）, nickel is by electrolysis acquisition, electrolytic process
Middle to produce substantial amounts of hydrogen, hydrogen is separated out in high temperature is dissolved in liquid metal all the time in process of setting, and exhaust is bad to produce a large amount of gas
Hole；Another aspect device for sand coated iron mould technique is not easy because casting cooling velocity is fast into the field trash and gas in die cavity molten iron
Emersion and easily form slag inclusion and stomata, also easily formed cold shut.Therefore it is required that device for sand coated iron mould sandbox possesses good degassing function.
The content of the invention
The present invention in view of the shortcomings of the prior art, proposes that a kind of foundry cast iron mould covers sand honeycomb fashion exhaust sandbox, and structure is skilful
It is wonderful, can quick heat radiating and exhaust.
In order to realize foregoing invention purpose, the present invention provides following technical scheme：A kind of foundry cast iron mould covers sand honeycomb fashion
Exhaust sandbox, including device for sand coated iron mould cope mould, the cope mould are provided with several steam vents.
Further, a diameter of 4.5mm of the steam vent.
Further, the steam vent is provided with 396.
Compared with prior art, the present invention has advantages below：Devised on device for sand coated iron mould cope mould uneven
The steam vent of distribution, in product casting process to die cavity, core and in molten iron the exhaust of gas serve chilling and it is quick
Even scavenging action.
Brief description of the drawings
Fig. 1 is the structural representation that traditional swage covers sand mo(u)ld tool；
Fig. 2 is the structural representation that present invention casting device for sand coated iron mould honeycomb fashion is vented sand box mould.
Specific embodiment
The present invention will be described in detail below in conjunction with the accompanying drawings, and the description of this part is only exemplary and explanatory, should not
There is any restriction effect to protection scope of the present invention.
As shown in Fig. 2 a kind of foundry cast iron mould covers sand honeycomb fashion exhaust sandbox, including device for sand coated iron mould cope mould 3, institute
State device for sand coated iron mould cope mould 3 and be provided with several steam vents 4, several steam vents 4 are uneven arrangement.
This casting device for sand coated iron mould honeycomb fashion is vented sandbox, according to high-nickel austenite nodular cast iron material particularity, in swage
396 steam vents of diameter of phi 4.5mm 4 that uneven distribution is devised on sand cope mould 3 are covered, in product casting process
The exhaust of gas serves chilling and Quick uniform scavenging action to die cavity, core and in molten iron.
Sandbox is vented using the casting device for sand coated iron mould honeycomb fashion of said structure, with following technique effect：Solve product
Because the stomata for being vented bad generation is more, slag inclusion and cold shut problem, it is ensured that product quality.Specifically it is discussed below：Cope profile
Size is 760 × 560 × 170mm, because shape of product is complicated, so sandbox uneven thickness, by thinnest part 25mm~thickness
150mm, 1200 DEG C are cooled fast to about 3 minutes by molten iron temperature in verification experimental verification casting pouring to sandbox by 1460 DEG C.
Heat formula：The specific heat capacity for checking in molten iron is,
,
Finally the heat of discharge is：,
The area of single stomata 4：,
The gross area of all steam vents 4：,
Check in
Cumulative volume is when minimum high：,
Now quality is：, the 0.017 of gross weight is accounted for,
3 minutes exhaust energies of casting are：,
Cumulative volume is when maximum high：,
Now quality is：, account for gross weight
0.099,3 minutes discharge energy be：
The two is averaged, then sand box mould discharge heat in 3 minutes：
Foundry cast iron mould covers sand honeycomb fashion exhaust sandbox, and a sand case pours into a mould 8 cast products, using about 68 kilograms, 3 points of molten steel
Sandbox discharge heat in clock：4.717×105J.Then every casting discharge heat is 0.590 × 105J。
The product made using this sandbox, it is sampled to carry out ONH analysis-e/or determinings result such as following table：
It can be seen from the table oxygen, nitrogen, hydrogen content have and largely decline.Through count actual casting because stomata, be mingled with, cold shut etc. it is scarce
Fall into the percent defective for producing and be significantly reduced to 1%, solve the relevant defect problem of casting.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of foundry cast iron mould covers sand honeycomb fashion exhaust sandbox, including device for sand coated iron mould cope mould, it is characterised in that：It is described
Cope mould is provided with several steam vents.
2. foundry cast iron mould as claimed in claim 1 covers sand honeycomb fashion exhaust sandbox, it is characterised in that：The diameter of the steam vent
It is 4.5mm.
3. foundry cast iron mould as claimed in claim 2 covers sand honeycomb fashion exhaust sandbox, it is characterised in that：The steam vent is provided with
396.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710099539.0A CN106903274A (en) | 2017-02-23 | 2017-02-23 | A kind of foundry cast iron mould covers sand honeycomb fashion exhaust sandbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710099539.0A CN106903274A (en) | 2017-02-23 | 2017-02-23 | A kind of foundry cast iron mould covers sand honeycomb fashion exhaust sandbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106903274A true CN106903274A (en) | 2017-06-30 |
Family
ID=59208567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710099539.0A Pending CN106903274A (en) | 2017-02-23 | 2017-02-23 | A kind of foundry cast iron mould covers sand honeycomb fashion exhaust sandbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106903274A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110976785A (en) * | 2019-12-31 | 2020-04-10 | 梁祺 | Sandbox for metal casting |
| CN112157222A (en) * | 2020-11-18 | 2021-01-01 | 襄阳金耐特机械股份有限公司 | Iron mold sand-coating mold for novel forklift axle housing |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201257495Y (en) * | 2008-09-08 | 2009-06-17 | 浙江省机电设计研究院有限公司 | Iron type sand coated casting exhaust system |
| CN101954456A (en) * | 2010-04-22 | 2011-01-26 | 广西钟山长城矿山机械厂 | Method for manufacturing metal molds used for casting manganese steel crushing walls or rolling motor walls of cone crushers |
| CN102407294A (en) * | 2011-12-14 | 2012-04-11 | 安徽省辉煌机械制造有限公司 | Sand box for sand coating in rim casting by iron mould |
| CN202701313U (en) * | 2012-07-02 | 2013-01-30 | 重庆新红旗缸盖制造有限公司 | Iron mold sand coated sand box for 6-cylinder cylinder cover |
| CN202701312U (en) * | 2012-06-27 | 2013-01-30 | 重庆新红旗缸盖制造有限公司 | Swage sand-overlying sand box of double-cylinder cylinder lid |
| US20140262100A1 (en) * | 2013-03-13 | 2014-09-18 | Amsted Rail Company, Inc. | Forming a mold for steel casting |
| CN105057587A (en) * | 2015-08-13 | 2015-11-18 | 湖南省至科铸造有限责任公司 | Grinding disc casting, grinding disc casting mold and grinding disc molding process |
| CN106180566A (en) * | 2016-07-16 | 2016-12-07 | 冯文杰 | A kind of manufacturing technique method of engine air door closure casting |
-
2017
- 2017-02-23 CN CN201710099539.0A patent/CN106903274A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201257495Y (en) * | 2008-09-08 | 2009-06-17 | 浙江省机电设计研究院有限公司 | Iron type sand coated casting exhaust system |
| CN101954456A (en) * | 2010-04-22 | 2011-01-26 | 广西钟山长城矿山机械厂 | Method for manufacturing metal molds used for casting manganese steel crushing walls or rolling motor walls of cone crushers |
| CN102407294A (en) * | 2011-12-14 | 2012-04-11 | 安徽省辉煌机械制造有限公司 | Sand box for sand coating in rim casting by iron mould |
| CN202701312U (en) * | 2012-06-27 | 2013-01-30 | 重庆新红旗缸盖制造有限公司 | Swage sand-overlying sand box of double-cylinder cylinder lid |
| CN202701313U (en) * | 2012-07-02 | 2013-01-30 | 重庆新红旗缸盖制造有限公司 | Iron mold sand coated sand box for 6-cylinder cylinder cover |
| US20140262100A1 (en) * | 2013-03-13 | 2014-09-18 | Amsted Rail Company, Inc. | Forming a mold for steel casting |
| CN105057587A (en) * | 2015-08-13 | 2015-11-18 | 湖南省至科铸造有限责任公司 | Grinding disc casting, grinding disc casting mold and grinding disc molding process |
| CN106180566A (en) * | 2016-07-16 | 2016-12-07 | 冯文杰 | A kind of manufacturing technique method of engine air door closure casting |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110976785A (en) * | 2019-12-31 | 2020-04-10 | 梁祺 | Sandbox for metal casting |
| CN110976785B (en) * | 2019-12-31 | 2021-06-01 | 阳春市科能实业有限公司 | Sandbox for metal casting |
| CN112157222A (en) * | 2020-11-18 | 2021-01-01 | 襄阳金耐特机械股份有限公司 | Iron mold sand-coating mold for novel forklift axle housing |
| CN112157222B (en) * | 2020-11-18 | 2022-03-22 | 襄阳金耐特机械股份有限公司 | Iron mold sand-coating mold for novel forklift axle housing |
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170630 |
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| RJ01 | Rejection of invention patent application after publication |