CN102794399A - Casting process for pre-introducing protective gas into casting die and special casting equipment - Google Patents
Casting process for pre-introducing protective gas into casting die and special casting equipment Download PDFInfo
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- CN102794399A CN102794399A CN2012103358743A CN201210335874A CN102794399A CN 102794399 A CN102794399 A CN 102794399A CN 2012103358743 A CN2012103358743 A CN 2012103358743A CN 201210335874 A CN201210335874 A CN 201210335874A CN 102794399 A CN102794399 A CN 102794399A
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Abstract
The invention belongs to the field of metal smelting, particularly relates to a casting process for pre-introducing protective gas into a casting die and further relates to special casting equipment for the process. The process comprises the following steps of: covering a casting opening and covering a top cover above the casing die; then pre-introducing protective gas into a casting tube from an air vent below the casting opening; introducing the protective gas into the casting die from a middle casting tube through a casting channel; after the casting die is full of the protective gas, removing a covering object; and pouring steel liquid into the casting die from the middle casting tube through the casting channel. The casting process for pre-introducing the protective gas into the casting die, disclosed by the invention, has the beneficial effects that the protective gas is introduced before a steel liquid casting process is carried out, so that oxygen and the steel liquid are completely separated and the steel liquid is prevented from being oxidized by air; and therefore, the quality and the grade of finished-product steel are improved.
Description
Technical field
The invention belongs to metal smelt-ingot casting field, be specifically related to a kind of die casting process that feeds protective gas protection casting in advance, also relate to casting gate special-purpose in this technology.
Background technology
In the iron and steel casting cycle, the equipment that often adopts is uncovered casting case, and this casting case comprises casing and the open mold that is arranged in casing; When molten steel is cast, molten steel is fed mold by the molten steel passage, the slag of molten steel above in casting cycle can air-isolation; Thereby make molten steel avoid receiving oxidation; And in the actual production, still have the oxygen meeting oxidation molten steel of part, thereby the quality of finished steel is affected.Therefore need to improve to above-mentioned casting mode and smelting equipment, the iron and steel that smelting is come out has higher quality.
Summary of the invention
In order to solve above-mentioned technical problem; The invention provides the casting process that in watering mold, feeds protective gas in advance; Be fit to the method for making a bet in the casting ingot process, promptly in process, charge into protective gas in the casting case the molten steel casting; With the oxygen in the secluding air, it is oxidized to avoid molten steel to contact with oxygen.
In watering mold, feed the casting process of protective gas in advance, comprise following step:
Casting gate is covered; Above mold, cover top cover; From the blow vent of casting gate below, feed protective gas to middle cast tube in advance then, protective gas is got in the mold, after property gas to be protected is full of mold through pouring channel by middle cast tube; Remove covering, from casting gate, molten steel is injected in the mold through pouring channel by middle cast tube.
Preferably, above-mentioned protective gas is any in nitrogen, the argon gas.
Preferred, above-mentioned protective gas is an argon gas.
Realize in watering mold, feeding in advance special-purpose casting equipment in the casting process of protective gas; This equipment comprises casting gate and the middle cast tube that is connected with casting gate; There is pouring channel middle cast tube below; Pouring channel is connected with mold, has on the sidewall on the sidewall of casting gate or middle cast tube top protective gas is fed the blow vent to the middle cast tube, and mold top opening part has one to match with it and merge the top cover that flexibly connects with mold.
Beneficial effect of the present invention is, adopts the die casting process that feeds protective gas protection casting in advance, before the molten steel casting; Just feed protective gas; Starvation and molten steel make molten steel avoid receiving the oxidation of air more completely, thereby improve the quality and the quality of finished steel.
Description of drawings
Fig. 1 is the structural representation of embodiments of the invention 1 casting equipment;
Fig. 2 is the structural representation of embodiments of the invention 2 casting equipments;
Among the figure: 1-casting gate, 2-covering, 3-blow vent, 4-molten steel, cast tube among the 5-, 6-pouring channel, 7-mold, 8-top cover.
The specific embodiment
Come the present invention is done explanation further below in conjunction with the accompanying drawing and the specific embodiment,, but do not limit the present invention with this so that those skilled in the art more understands the present invention.
Embodiment 1
In watering mold, feed the casting process of protective gas in advance, comprise following step:
Casting gate 1 is covered; Above mold 7, cover top cover 8, make the space 7 mouthfuls become an environment of sealing relatively, from the blow vent 3 of casting gate 1 below, feed argon gas to middle cast tube 5 in advance then from casting gate 1 to mold; Argon gas is got in the mold 7 through pouring channel 6 by middle cast tube 5; After treating that argon gas is full of mold 7, remove covering, from casting gate 1, molten steel is injected in the mold 7 through pouring channel 6 by middle cast tube 5.This covering 2 is made by strawboard, and its shape matches with casting gate, by this covering 2 casting gate is covered during applying argon gas, above covering 2, places a weight again, removes weight in the casting reach, destroys covering by fire with the heat of molten steel, realizes that the casting conductance is logical.Above covering 2 also can be processed by other material, for example iron plate etc.
Realize in watering mold, feeding in advance special-purpose casting equipment in the casting process of protective gas; This equipment comprises casting gate 1 and the middle cast tube 5 that is connected with casting gate 1; There is pouring channel 6 middle cast tube 5 belows; Pouring channel 6 is connected with mold 7, has on the sidewall of casting gate 1 argon gas is fed the blow vent 3 to the middle cast tube 5, and mold 7 top opening parts have one to match with it and merge the top cover 8 that flexibly connects with mold 7.
Embodiment 2
Be that with the difference of embodiment 1 in the present embodiment, blow vent is arranged on the sidewall on cast tube 5 tops, all the other are identical with embodiment 1.
Claims (4)
1. casting process that in watering mold, feeds protective gas in advance comprises following step:
Casting gate is covered; Above mold, cover top cover; From the blow vent of casting gate below, feed protective gas to middle cast tube in advance then, protective gas is got in the mold, after property gas to be protected is full of mold through pouring channel by middle cast tube; Remove covering, from casting gate, molten steel is injected in the mold through pouring channel by middle cast tube.
2. a kind of casting process that in watering mold, feeds protective gas in advance as claimed in claim 1 is characterized in that described protective gas is any in nitrogen, the argon gas.
3. according to claim 1 or claim 2 a kind of casting process that in watering mold, feeds protective gas in advance is characterized in that described protective gas is an argon gas.
4. special-purpose casting equipment in a kind of casting process that in watering mold, feeds protective gas in advance as claimed in claim 1; This equipment comprises casting gate and the middle cast tube that is connected with casting gate; There is pouring channel the cast tube below in described; Described pouring channel is connected with mold; It is characterized in that having on the sidewall on the sidewall of described casting gate or middle cast tube top protective gas is fed the blow vent to the middle cast tube, described mold top opening part has one to match with it and merge the top cover that flexibly connects with mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103358743A CN102794399A (en) | 2012-09-12 | 2012-09-12 | Casting process for pre-introducing protective gas into casting die and special casting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103358743A CN102794399A (en) | 2012-09-12 | 2012-09-12 | Casting process for pre-introducing protective gas into casting die and special casting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102794399A true CN102794399A (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103358743A Pending CN102794399A (en) | 2012-09-12 | 2012-09-12 | Casting process for pre-introducing protective gas into casting die and special casting equipment |
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| CN (1) | CN102794399A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077532A (en) * | 2016-08-23 | 2016-11-09 | 江苏星火特钢有限公司 | A kind of steel ingot production technology |
| CN111715855A (en) * | 2020-04-30 | 2020-09-29 | 马鞍山市中桥金属材料有限公司 | Casting method for 1Cr17Ni2 or 5CrNiMoV steel ingot |
| CN117139563A (en) * | 2023-08-25 | 2023-12-01 | 江苏万恒铸业有限公司 | Precision casting equipment and casting process of Monel nozzle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470658A (en) * | 2003-06-11 | 2004-01-28 | 吉林大学 | Purifying method for casting-smelting mag nesium alloy and air blowing apparatus thereof |
| CN1765545A (en) * | 2004-10-29 | 2006-05-03 | 中国科学院金属研究所 | The preparation method of wrought magnesium alloy large piece blank |
| CN101293273A (en) * | 2008-05-23 | 2008-10-29 | 中国科学院金属研究所 | Process for manufacturing low-aliquation large-scale hollow steel ingot |
| CN102407296A (en) * | 2010-09-25 | 2012-04-11 | 宝山钢铁股份有限公司 | Pouring stream protection method and protection device |
-
2012
- 2012-09-12 CN CN2012103358743A patent/CN102794399A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470658A (en) * | 2003-06-11 | 2004-01-28 | 吉林大学 | Purifying method for casting-smelting mag nesium alloy and air blowing apparatus thereof |
| CN1765545A (en) * | 2004-10-29 | 2006-05-03 | 中国科学院金属研究所 | The preparation method of wrought magnesium alloy large piece blank |
| CN101293273A (en) * | 2008-05-23 | 2008-10-29 | 中国科学院金属研究所 | Process for manufacturing low-aliquation large-scale hollow steel ingot |
| CN102407296A (en) * | 2010-09-25 | 2012-04-11 | 宝山钢铁股份有限公司 | Pouring stream protection method and protection device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077532A (en) * | 2016-08-23 | 2016-11-09 | 江苏星火特钢有限公司 | A kind of steel ingot production technology |
| CN111715855A (en) * | 2020-04-30 | 2020-09-29 | 马鞍山市中桥金属材料有限公司 | Casting method for 1Cr17Ni2 or 5CrNiMoV steel ingot |
| CN111715855B (en) * | 2020-04-30 | 2021-12-28 | 马鞍山市中桥金属材料有限公司 | Casting method for 1Cr17Ni2 or 5CrNiMoV steel ingot |
| CN117139563A (en) * | 2023-08-25 | 2023-12-01 | 江苏万恒铸业有限公司 | Precision casting equipment and casting process of Monel nozzle |
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Application publication date: 20121128 |