CN203018686U - Molten metal purifying device for casting - Google Patents
Molten metal purifying device for casting Download PDFInfo
- Publication number
- CN203018686U CN203018686U CN 201220703069 CN201220703069U CN203018686U CN 203018686 U CN203018686 U CN 203018686U CN 201220703069 CN201220703069 CN 201220703069 CN 201220703069 U CN201220703069 U CN 201220703069U CN 203018686 U CN203018686 U CN 203018686U
- Authority
- CN
- China
- Prior art keywords
- ingate
- casting
- molten metal
- choked flow
- flow core
- 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.)
- Expired - Lifetime
Links
- 238000005266 casting Methods 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 title claims abstract description 23
- 239000004576 sand Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 229910052571 earthenware Inorganic materials 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002893 slag Substances 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 abstract 1
- 239000010813 municipal solid waste Substances 0.000 description 5
- 239000004744 fabric Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The utility model discloses a molten metal purifying device for casting, and the device comprises a cross gate and an ingate formed in a sand mould. A flow resisting core matched with the ingate and having a reversed L-shaped longitudinal section is positioned on the sand mould surrounding the ingate by a step; the front bottom surface of the flow resisting core and the bottom surface of the ingate form a front ingate area; the rear bottom surface of the flow resisting core and the bottom surface of the ingate form a rear ingate area; and a ceramic tube connected with a casting cavity is arranged at the bottom of the rear ingate area. By the flow resisting core matched with the ingate, the device has a secondary slag obstruction effect, effectively increases the purity of the molten metal, is simple in structure and simple and convenient to use and operate, raises the labor productivity, and contributes to reduction of the casting cost.
Description
Technical field
The utility model relates to metal casting, particularly a kind of casting metal liquid purifier.
Background technology
Casting alloy can produce a large amount of field trashes, such as oxide, carbide, nitride, hydride etc. in melting and casting process.These field trashes mainly are lumps or fine graininess is present in molten metal, in casting process, molten metal is carrying these field trashes and is entering die cavity by running gate system, finally be retained in Solidification Microstructure of Castings, destroy the Solidification Microstructure of Castings structure, become the main cause that foundry goods cracks, greatly restricting the lifting of casting quality and performance, even cause scrapping of foundry goods.Therefore, adopt the technical measures purifying molten metal in casting process, the field trash that reduces in molten metal is very important.
At present the method that generally adopts of purifying molten metal is to place screen pack or filter cloth filters field trash in running gate system.The shortcoming of this method is more, comprises the running gate system more complicated, and the moulding difficulty is large; Filling velocity is unstable, easily sand washing and generation misrun and cold shut defects; Because of screen pack and the filter cloth resistance to elevated temperatures limited, during the high temperature cast, be subjected to the very large impulsive force of molten metal and high temperature corrosion effect, easily fracture is broken, a large amount of fragments after fragmentation are along with molten metal enters the foundry goods die cavity, bring the secondary inclusion thing, field trash is further increased, directly cause foundry goods to be scrapped; Use screen pack or filter cloth to filter, not easy to operate, labor productivity is low, and the foundry goods manufacturing cost is high.
The utility model content
The purpose of this utility model be the defective for above-mentioned prior art provide a kind of simple in structure, use casting metal liquid purifier easy and simple to handle, good purification.
For achieving the above object, the casting metal liquid purifier that the utility model provides is included in cross gate and the ingate offered on sand mold; Place with ingate by step on the sand mold of ingate match, choked flow core that the longitudinal cross-section is " ┏ " shape, choked flow core anterior bottom surface and ingate bottom surface form ingate proparea, bottom surface, choked flow core rear portion and formation ingate back zone, ingate bottom surface; In bottom, ingate back zone, the earthenware that joins with casting mold cavity is arranged.
The height in described ingate proparea is 2～12mm.
The utility model casting with the cleaning principle of metal liquid purifier is, adopt the choked flow core that coordinates with ingate to make ingate form first little rear large forward and backward zone, choked flow cross section, making ingate inhale moving district reduces, when molten metal enters ingate by cross gate, large-sized field trash floating upward quickly, by choked flow core and laminar ingate proparea gear in cross gate; Some tiny field trashes are as entering into the ingate back zone by the ingate proparea, because cross section, ingate back zone becomes large, the metal liquid stream prompt drop is low, and field trash can float very soon, finally be delayed at the top of ingate, the pure molten metal earthenware bottom ingate enters the foundry goods die cavity.By twice pushing off the slag effect, the molten metal degree of purity of cast is improved.
Compared with prior art, the beneficial effects of the utility model are:
1, the choked flow core of the utility model device by coordinating with ingate, play secondary pushing off the slag effect, and molten metal purity is effectively improved.
2, the utility model apparatus structure is simple, uses easy and simple to handlely, raises labour productivity, and is conducive to reduce the casting cost.
Description of drawings
Fig. 1 is the longitudinal sectional view of the utility model device;
Fig. 2 is the 3 dimensional drawing of choked flow core in Fig. 1;
Fig. 3 is the top view that the utility model device does not contain the choked flow core.
In figure: 1-sand mold, 2-cross gate, 3-choked flow core, 4-step, 5-ingate back zone, 6-earthenware, 7-ingate proparea.
The specific embodiment
In conjunction with Fig. 1, Fig. 2 and Fig. 3, cross gate 2 and ingate are offered in the utility model casting on sand mold 1 with metal liquid purifier; Place by step 4 around the running channel external form top of ingate match with ingate, choked flow core 3(that the longitudinal cross-section is " ┏ " shape as shown in Figure 2), the anterior bottom surface of choked flow core and formation ingate proparea, ingate bottom surface 7, bottom surface, choked flow core rear portion and formation ingate back zone, ingate bottom surface 5; Size according to foundry goods and choked flow core, the height H 3 in ingate proparea 7 is 2～12mm, and all gap a in the edge of choked flow core rear end face and sand mold are 0.3 ~ 0.8mm, and foundry goods is larger, cross filter core larger, all gaps, edge of ingate proparea height and choked flow core rear end face and sand mold are also larger; The upper end of the earthenware 6 that joins with casting mold cavity and ingate back zone bottom connection.
Embodiment 1, for casting weight M＜500kg foundry goods, and the utility model device choked flow core and ingate proparea height: H1=40～50mm, H2=35～45mm, H3=2～4mm; Section length: L1=45～60mm before and after ingate, L2=5～10mm, L3=35～45mm.
The utility model is applicable to the sand casting technology of all specifications, all materials.
Claims (2)
1. a casting metal liquid purifier, be included in cross gate (2) and the ingate offered on sand mold (1); It is characterized in that: place by step (4) on the sand mold of ingate match with ingate, choked flow core (3) that the longitudinal cross-section is " ┏ " shape, the anterior bottom surface of choked flow core and formation ingate proparea (7), ingate bottom surface, bottom surface, choked flow core rear portion and formation ingate back zone (5), ingate bottom surface; In bottom, ingate back zone, the earthenware (6) that joins with casting mold cavity is arranged.
2. casting metal liquid purifier according to claim 1, it is characterized in that: the height H 3 in described ingate proparea (7) is 2～12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220703069 CN203018686U (en) | 2012-12-17 | 2012-12-17 | Molten metal purifying device for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220703069 CN203018686U (en) | 2012-12-17 | 2012-12-17 | Molten metal purifying device for casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203018686U true CN203018686U (en) | 2013-06-26 |
Family
ID=48642700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220703069 Expired - Lifetime CN203018686U (en) | 2012-12-17 | 2012-12-17 | Molten metal purifying device for casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203018686U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962404A (en) * | 2012-12-17 | 2013-03-13 | 沈阳机床银丰铸造有限公司 | A kind of molten metal purification device for foundry |
| CN106216606A (en) * | 2016-08-31 | 2016-12-14 | 安徽工程大学 | A kind of independent control method controlling runner timing switching in running gate system |
-
2012
- 2012-12-17 CN CN 201220703069 patent/CN203018686U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962404A (en) * | 2012-12-17 | 2013-03-13 | 沈阳机床银丰铸造有限公司 | A kind of molten metal purification device for foundry |
| CN102962404B (en) * | 2012-12-17 | 2015-03-25 | 沈阳机床银丰铸造有限公司 | Molten metal purification device for casting |
| CN106216606A (en) * | 2016-08-31 | 2016-12-14 | 安徽工程大学 | A kind of independent control method controlling runner timing switching in running gate system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |
|
| CX01 | Expiry of patent term |