CN105642835A - Pouring method for eliminating oxidizing slag on working table casting - Google Patents
Pouring method for eliminating oxidizing slag on working table casting Download PDFInfo
- Publication number
- CN105642835A CN105642835A CN201610036044.9A CN201610036044A CN105642835A CN 105642835 A CN105642835 A CN 105642835A CN 201610036044 A CN201610036044 A CN 201610036044A CN 105642835 A CN105642835 A CN 105642835A
- Authority
- CN
- China
- Prior art keywords
- cross gate
- ceramic filter
- pouring
- sprue
- runners
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/086—Filters
Abstract
The invention provides a pouring method for eliminating oxidizing slag on a working table casting. The pouring method comprises the following steps that (1) a pouring system is arranged, and comprises ingates connected with the working table casting, the ingates are connected with runners, the two ends of the runners are connected with a sprue, ceramic filter meshes are respectively arranged in the runners at the two ends, drainage sections are arranged at the front ends of the ceramic filter meshes, and are connected with the sprue through choked flow runners, and diversion sections are arranged at the rear ends of the ceramic filter meshes; (2) the pouring temperature is 1,380-1,390 DEG C, the pouring weight is 525 kg, the pouring time is 20-25 s, and molten iron enters the sprue through a sprue cup; (3) the molten iron enters the ceramic filter meshes through the choked flow runners and the drainage sections; (4) the molten iron enters the runners through the ceramic filter meshes and the diversion sections; and (5) the molten iron entering the runners is introduced in a cavity of a working table by virtue of the ingates spliced on the runners. The pouring method has the advantages that the possibility of generation of primary oxidizing slag is avoided, and the amount of generated secondary slag is reduced.
Description
Technical field
The invention belongs to casting technology field, relate in particular to a kind of pouring procedure eliminating working ways oxidizing slag.
Background technology
18F workbench profile is of a size of 1000 �� 600 �� 210, and material is HT350, and average wall thickness is 90, weight 450 kilograms, and foundry goods whole body is processed, and can not have any defect after processing. After slag owing to existing in molten iron enters die cavity by running gate system, cavity filling process continues oxidation, its volume is increased to once oxidation slag, after ferrum liquid enters die cavity, too fast generation of ferrum flow velocity is splashed, and gas etc. makes the slag that iron liquid oxidation generates be Secondary Oxidizing Slag, its small volume, owing to wall thickness is thicker, casting process produces oxidizing slag, above foundry goods, the secondary oxidizing slag degree of depth above and on side relatively deep, processing can not be removed.
Summary of the invention
The present invention is to solve that the problems referred to above provide a kind of pouring procedure eliminating working ways oxidizing slag.
The technical scheme is that and be achieved in that: a kind of casting method eliminating working ways oxidizing slag, comprise the following steps:
(1), casting system is set: casting system U-shaped symmetrical structure includes the ingate being connected with working ways, ingate is connected with cross gate, cross gate front end is connected with sprue, it is respectively equipped with foam ceramic filter in the cross gate on both sides, foam ceramic filter front end is provided with Drainage Section, Drainage Section is connected with sprue by choked flow cross gate, and foam ceramic filter rear end is provided with diversion section;
(2), pouring temperature 1380��1390 DEG C, poured weights 525 kilograms, 20��25 seconds durations of pouring, ferrum liquid ferrum liquid enters sprue by cup;
(3), foam ceramic filter is entered again through choked flow cross gate, Drainage Section;
(4), ferrum liquid enters cross gate through foam ceramic filter, diversion section;
(5), enter cross gate ferrum liquid by the ingate being overlapped on above cross gate by ferrum liquid introduce workbench die cavity in, the Gating Area of each running channel respectively AResistance=26cm2��ADirectly=28cm2��AHorizontal=31cm2��AIn=33cm2, pour into a mould ratio AResistance<ADirectly<AHorizontal<AIn;
Described cross gate lower surface is set to skewed;
Described cross gate end is provided with collection bag.
The invention has the beneficial effects as follows: the present invention arranges filter in running gate system, filter the oxidizing slag in ferrum liquid and impurity, reduce impurity and enter the probability of die cavity, avoid the possibility that once oxidation slag generates, the metal liquid stream of whole disorder can be combed simultaneously, turbulent flow is made to be converted into current stabilization, reduce turbulent flow, make metal liquid stream smoothened neatly, stable, incline structure it is designed to below cross gate, make the clean ferrum liquid after combing steadily can enter die cavity low speed, reduce the splash in entrance process of the ferrum liquid gentle, thus reducing ferrum liquid to enter reoxidation after die cavity and producing the probability of Secondary Oxidizing Slag, reduce the formation of secondary slag.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the profile of cross gate of the present invention.
Part illustrates: 1, working ways, 2, cross gate, 3, sprue, 4, ingate, 5, drainage screen, 6, collect bag, 7, diversion section, 8, Drainage Section, 9, choked flow cross gate.
Detailed description of the invention
In order to be more fully understood that and enforcement, below in conjunction with accompanying drawing, the invention will be further described: a kind of casting method eliminating working ways oxidizing slag, casting system is first set, casting system is the ingate 4 that U-shaped symmetrical structure includes being connected with working ways 1, ingate 4 is connected with cross gate 2, cross gate 2 front end is connected with sprue 3, it is respectively equipped with foam ceramic filter 5 in the cross gate 2 on both sides, foam ceramic filter 5 removes impurity in ferrum liquid, once oxidation slag is avoided to generate, and liquid stream is carried out combing make turbulent flow become current stabilization, foam ceramic filter 5 front end is provided with Drainage Section 8, Drainage Section 8 is connected with sprue 3 by choked flow cross gate 9, foam ceramic filter 5 rear end is provided with diversion section 7, cross gate 2 lower surface is set to skewed, cross gate 2 end is provided with collection bag 6.
Pouring temperature 1385 DEG C, poured weights 525 kilograms, 23 seconds durations of pouring, ferrum liquid enters sprue 3 by cup, foam ceramic filter 5 is entered again through choked flow cross gate 9, Drainage Section 8, ferrum liquid enters cross gate 2 through foam ceramic filter 5, diversion section 7, and ferrum liquid is introduced working ways 1 die cavity, the minimum A of Gating Area in running gate system by being overlapped on cross gate 2 ingate 4 above by the ferrum liquid entering cross gate 2Resistance=26cm2, ADirectly=28cm2, AHorizontal=31cm2, AIn=33cm2, change the ratio (A of running gate systemResistance<ADirectly<AHorizontal<AIn), unchoked running system is become from open positive-pressure gating system, and sufficiently long Drainage Section and diversion section is devised in filter front-end and back-end, the collection bag storing running gate system front end chill liquid it is provided with again at cross gate end, consider that pouring temperature is brought up to 1380-1390 DEG C by the choked flow effect of drainage screen, flow for balanced each running channel, it is designed to incline structure by below cross gate, make the clean ferrum liquid after combing steadily can fill type low speed, reduce the splash in cavity filling process of the ferrum liquid and volume gas, thus reducing ferrum liquid to enter reoxidation after die cavity and producing the probability of Secondary Oxidizing Slag, reduce the formation of secondary slag. it is greatly improved through producing checking surface quality of continuous castings.
Claims (3)
1. the pouring procedure eliminating working ways oxidizing slag, it is characterised in that comprise the following steps:
(1), casting system is set: casting system is U-shaped symmetrical structure, including the ingate (4) being connected with working ways (1), ingate (4) is connected with cross gate (2), cross gate (2) front end is connected with sprue (3), it is respectively equipped with foam ceramic filter (5) in the cross gate (2) on both sides, foam ceramic filter (5) front end is provided with Drainage Section (8), Drainage Section (8) is connected with sprue (3) by choked flow cross gate (9), and foam ceramic filter (5) rear end is provided with diversion section (7);
(2), pouring temperature 1380��1390 DEG C, poured weights 525 kilograms, 20��25 seconds durations of pouring, ferrum liquid enters sprue (3) by cup;
(3), foam ceramic filter (5) is entered again through choked flow cross gate (9), Drainage Section (8);
(4), ferrum liquid enters cross gate (2) through foam ceramic filter (5), diversion section (7);
(5), enter cross gate (2) ferrum liquid by be overlapped on cross gate (2) ingate (4) above by ferrum liquid introduce workbench (1) die cavity in, the Gating Area of each running channel respectively AResistance=26cm2��ADirectly=28cm2��AHorizontal=31cm2��AIn=33cm2, pour into a mould ratio AResistance<ADirectly<AHorizontal<AIn��
2. a kind of casting method eliminating working ways oxidizing slag as claimed in claim 1, it is characterised in that described cross gate (2) lower surface is set to skewed.
3. a kind of casting method eliminating working ways oxidizing slag as claimed in claim 1 or 2, it is characterised in that described cross gate (2) end is provided with collection bag (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036044.9A CN105642835A (en) | 2016-01-20 | 2016-01-20 | Pouring method for eliminating oxidizing slag on working table casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036044.9A CN105642835A (en) | 2016-01-20 | 2016-01-20 | Pouring method for eliminating oxidizing slag on working table casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105642835A true CN105642835A (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610036044.9A Pending CN105642835A (en) | 2016-01-20 | 2016-01-20 | Pouring method for eliminating oxidizing slag on working table casting |
Country Status (1)
| Country | Link |
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| CN (1) | CN105642835A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109926548A (en) * | 2019-05-05 | 2019-06-25 | 合肥江淮铸造有限责任公司 | A kind of full core assembly pouring system of cylinder body |
| CN110039007A (en) * | 2019-05-05 | 2019-07-23 | 合肥江淮铸造有限责任公司 | A kind of cylinder casting running gate system |
| CN114042871A (en) * | 2021-11-12 | 2022-02-15 | 中车戚墅堰机车有限公司 | Gating system with compensation and deformation prevention effects |
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2016
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109926548A (en) * | 2019-05-05 | 2019-06-25 | 合肥江淮铸造有限责任公司 | A kind of full core assembly pouring system of cylinder body |
| CN110039007A (en) * | 2019-05-05 | 2019-07-23 | 合肥江淮铸造有限责任公司 | A kind of cylinder casting running gate system |
| CN114042871A (en) * | 2021-11-12 | 2022-02-15 | 中车戚墅堰机车有限公司 | Gating system with compensation and deformation prevention effects |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160608 |