CN203917903U - When a kind of upper, prevent the protective device of molten steel secondary oxidation - Google Patents
When a kind of upper, prevent the protective device of molten steel secondary oxidation Download PDFInfo
- Publication number
- CN203917903U CN203917903U CN201420257282.9U CN201420257282U CN203917903U CN 203917903 U CN203917903 U CN 203917903U CN 201420257282 U CN201420257282 U CN 201420257282U CN 203917903 U CN203917903 U CN 203917903U
- Authority
- CN
- China
- Prior art keywords
- molten steel
- long nozzle
- secondary oxidation
- cooling water
- pipe
- 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 - Fee Related
Links
Abstract
While the utility model discloses a kind of upper, prevent the protective device of molten steel secondary oxidation, adopt immersion long nozzle to make upper note beam into flush type undercurrent.This device comprises: long nozzle and circulating cooling system, described long nozzle upper end connects ladle, lower end is inserted into below the molten steel liquid level of ingot mould, described circulating cooling system is made up of the cooling water pipe being looped around on long nozzle, it is around position between ladle and hot top, and cooling water pipe has water inlet pipe and outlet pipe, and Pressure gauge and pressure-regulating valve are set on water inlet pipe, cooling water is flowed into by water inlet pipe, and outlet pipe flows out.The utility model adopts the long nozzle identical with pour steel composition, be inserted into below molten steel liquid level, avoided the secondary oxidation of casting molten steel, also avoided using the introducing of the caused non-metallic inclusion in the mouth of a river of refractory material, improve the degree of purity of molten steel, also improved casting quality; The long nozzle that adopts steel material, also can reduce steel ingot casting cost.
Description
Technical field
The utility model relates to ferrous metallurgical industry die casting apparatus for pouring, particularly prevents the protective device of molten steel secondary oxidation when a kind of upper.
Background technology
The method of casting in Ferrous Metallurgy technique has continuous casting and die casting, die casting is produced the steel ingot history of existing more than 100 year, in iron and steel is produced, still occupy a tiny space at present, continuous casting requires to have certain castability to the steel grade of its production, will have certain scale simultaneously.Compared with continuous casting, be moulded into heavy section production field and there is unique advantage: can meet heavy section and produce the high request large to density, and continuous casting can not be produced; Can provide high-yield strength, ballistic work material, and continuous casting billet Solidification Characteristics determines that easy appearance affects the internal flaw such as center segregation and shrinkage cavity of performance.So still very important of die casting, and die casting can be divided into pit teeming, car casting, top teeming process and bet method, wherein top teeming process be by molten steel directly by the method for ingot mould direct injection suitable for reading, be also the most easy die casting method.But die cast easily cracks defect, while especially going up the teeming of note formula, in casting process, the exposed liquid level effect of the isotype interior continuous renewal of air, makes secondary oxidation aggravation.According to measuring and calculating, between casting cycle, the total bare area of molten steel is hundreds of times of ingot mould inner chamber cross-sectional area in mould, causes the increase of steel grade oxygen content.Meanwhile, the teeming of upper note formula, easily produces molten steel and opens the molten steel splash phenomena while watering, cause scab, the defect such as rimhole.Therefore the molten steel producing while avoiding upper splashes and is conducive to improve the quality of molten steel and the life-span of mould.
Patent publication No.: CN2579558Y discloses a kind of Full closed argon gas protective casting device for molten steel die casting; this device makes high-temperature metal molten steel pour into feed trumpet from the mouth of a river of ladle bottom time suitable for reading; in totally-enclosed argon shield state; completely cut off contacting of molten steel and air completely; improve the degree of purity of molten steel; reduce content and the oxide inclusions of N in molten steel, improved steel product quality, met user's high-quality requirement.But this device is only the optimization casting equipment of upper note formula teeming, can not effectively solves note formula and build caststeel ingot and open the problem that while watering, generation is splashed.
Patent publication No.: CN201264090Y discloses a kind of immersion entry nozzle for gas protection pouring; cylinder is established at this mouth of a river; cylinder top arranges bowl bodies; on cylinder, offer plug hole; the inner chamber of bowl bodies is connected with plug hole; on the interior cavity wall of bowl bodies, offer annular recess, offer passage in bowl bodies, passage is connected with annular recess.Its advantage is: it is in the time coordinating with the lower mouth of a river, inert gas is combined with groove through passage, in the gap that the mating surface of disperse between the lower mouth of a river and submersed nozzle produces, thereby from thoroughly having stopped the phenomenon of air contact steel stream, reduce the oxide inclusions in molten steel, improved the product quality of steel etc.But the molten steel in casting process washes away the problem that non-metallic inclusion that refractory material causes introduces not to be solved, and causes in steel ingot and occurs the ingot quality after solidifying being declined tissue defects.
Patent publication No.: CN201744650U discloses a kind of continuous casting protection pouring device; this device comprises ladle and long nozzle; described ladle comprises the lower mouth of a river that is arranged at its bottom; the top that long nozzle is inserted in bottom, the described lower mouth of a river; bottom, the He Xia mouth of a river, described long nozzle top is respectively arranged with the conical internal cavity and the outer inclined-plane that match, and the gradient of described conical internal cavity is consistent with the gradient on outer inclined-plane, bottom, the lower mouth of a river.Avoided the bad problem of existing long nozzle and lower mouth of a river line contact sealing, the way of contact changes face contact or the multi-line section way of contact into by line contact, realizes long nozzle and coordinates closely with ladle junction, and dependable performance, cost are low, easy to use.Be applicable to, in continuous casting, molten steel is injected to pans by ladle.But this device is only applicable to the production process of continuous casting, and be not suitable for the production of die casting blank.
Utility model content
The utility model prevents the protective device of molten steel secondary oxidation when a kind of upper is provided, adopt immersion long nozzle to make upper note beam into flush type undercurrent.
The utility model prevents when a kind of upper is provided that the protective device of molten steel secondary oxidation from comprising: long nozzle and circulating cooling system; described long nozzle upper end connects ladle; lower end is inserted into below the molten steel liquid level of ingot mould; described circulating cooling system is made up of the cooling water pipe being looped around on long nozzle; it is around position between ladle and hot top, and cooling water pipe has water inlet pipe and outlet pipe, and Pressure gauge and pressure-regulating valve are set on water inlet pipe; cooling water is flowed into by water inlet pipe, and outlet pipe flows out.
Described long nozzle is the straight barrel type mouth of a river, and mouth of a river material is identical with the material of molten steel, and the wall thickness of long nozzle is 50mm, and diameter is 300-350mm.
Described cooling water pipe diameter is 30mm.
The utility model is compared with existing same device, and its beneficial effect is embodied in:
Adopt the long nozzle identical with pour steel composition, be inserted into below molten steel liquid level, avoided the secondary oxidation of casting molten steel, also avoided using the introducing of the caused non-metallic inclusion in the mouth of a river of refractory material, improve the degree of purity of molten steel, also improved casting quality; The long nozzle that adopts steel material, also can reduce steel ingot casting cost.Meanwhile, steel long nozzle, along with casting process melts, is equivalent to add chill in pour steel, has reduced the degree of superheat of molten steel, can reduce with this temperature of molten steel, accelerates the cooling velocity of molten steel.
Brief description of the drawings
When being a kind of upper, Fig. 1 prevents the protective device structural representation of molten steel secondary oxidation.
Detailed description of the invention
As shown in Figure 1; when a kind of upper, prevent the protective device of molten steel secondary oxidation; this device is made up of long nozzle 3 and circulating cooling system 4; described long nozzle 3 upper ends connect ladle 6; lower end is inserted into below molten steel 5 liquid levels of ingot mould 2; described circulating cooling system 4 is made up of the cooling water pipe being looped around on long nozzle 3; its around position between ladle 6 and hot top 1; cooling water pipe has water inlet pipe 8 and outlet pipe 7; Pressure gauge 9 and pressure-regulating valve 10 are set on water inlet pipe 8; cooling water is flowed into by water inlet pipe 8, and outlet pipe 7 flows out.Described long nozzle 3 is the straight barrel type mouth of a river, and mouth of a river material is identical with the material of molten steel 5, and the wall thickness of long nozzle 3 is 50mm, and diameter is 300-350mm.Described cooling water pipe diameter is 30mm.
Claims (3)
1. prevent the protective device of molten steel secondary oxidation when a upper; it is characterized in that; this device comprises: long nozzle and circulating cooling system; described long nozzle upper end connects ladle; lower end is inserted into below the molten steel liquid level of ingot mould; described circulating cooling system is made up of the cooling water pipe being looped around on long nozzle; its around position between ladle and hot top; cooling water pipe has water inlet pipe and outlet pipe; Pressure gauge and pressure-regulating valve are set on water inlet pipe; cooling water is flowed into by water inlet pipe, and outlet pipe flows out.
2. the protective device that prevents molten steel secondary oxidation when a kind of upper according to claim 1, is characterized in that, said long nozzle is the straight barrel type mouth of a river, and mouth of a river material is identical with the material of molten steel, and the wall thickness of long nozzle is 50mm, and diameter is 300-350mm.
3. the protective device that prevents molten steel secondary oxidation when a kind of upper according to claim 1, is characterized in that, said cooling water pipe diameter is 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420257282.9U CN203917903U (en) | 2014-05-19 | 2014-05-19 | When a kind of upper, prevent the protective device of molten steel secondary oxidation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420257282.9U CN203917903U (en) | 2014-05-19 | 2014-05-19 | When a kind of upper, prevent the protective device of molten steel secondary oxidation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203917903U true CN203917903U (en) | 2014-11-05 |
Family
ID=51813784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420257282.9U Expired - Fee Related CN203917903U (en) | 2014-05-19 | 2014-05-19 | When a kind of upper, prevent the protective device of molten steel secondary oxidation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203917903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105642870A (en) * | 2016-03-03 | 2016-06-08 | 江苏安捷利机电科技有限公司 | Casting after-treatment equipment |
| CN106001521A (en) * | 2016-06-01 | 2016-10-12 | 安庆石化联盟铸管厂 | Energy-saving type water cooling equipment for metal pipes |
-
2014
- 2014-05-19 CN CN201420257282.9U patent/CN203917903U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105642870A (en) * | 2016-03-03 | 2016-06-08 | 江苏安捷利机电科技有限公司 | Casting after-treatment equipment |
| CN106001521A (en) * | 2016-06-01 | 2016-10-12 | 安庆石化联盟铸管厂 | Energy-saving type water cooling equipment for metal pipes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108531803B (en) | A kind of casting method of spheroidal graphite cast-iron valve body | |
| CN207255168U (en) | A kind of casting system of elimination ZG35 valve castings defects | |
| CN107159845A (en) | The casting system and its design method of a kind of elimination ZG35 valve casting defects | |
| CN106513616B (en) | A kind of wide thickness plate continuous casting machine dry type method for capping | |
| CN104889350A (en) | Round ingot die and round ingot manufacturing method | |
| CN106077494A (en) | A kind of pouring procedure casting VHP main beating cap | |
| CN203565812U (en) | Tundish flow stabilizer | |
| CN203917903U (en) | When a kind of upper, prevent the protective device of molten steel secondary oxidation | |
| CN105750502A (en) | Pouring system device and pouring method for iron based sand coated cast brake drums | |
| CN103962517B (en) | A kind of apparatus for pouring of die casting electrode bar and pouring procedure thereof | |
| CN202984588U (en) | Casting system of casing for aerogenerator base | |
| CN204912747U (en) | Crystallizer vortex immersion nozzle | |
| CN104174816B (en) | Casting die and the casting technique of ocean platform zero defect pinion stand | |
| CN211304683U (en) | Pouring system of oil cylinder | |
| TW202239496A (en) | Method for predicting temperature of molten steel | |
| CN104249142B (en) | The pressure casting processes of the sublimate homogeneous densification big strand of grain refining iron and steel | |
| CN201537698U (en) | Quadripuntal submerged nozzle for billet continuous casting | |
| CN110666106A (en) | Pouring system and method for oil cylinder | |
| CN201304475Y (en) | Continuous casting device for producing round billet with diameter being more than or equal to Phi 800 mm on straight-form conticaster | |
| CN105251954A (en) | Pouring mold and pouring method for steel ingot | |
| CN202129441U (en) | Quick plate blank change argon-blowing-type filling pipe end | |
| CN106563780B (en) | The continuous cast method of high alloy tool steel large round billet in a kind of medium high carbon | |
| CN205834120U (en) | A kind of running gate system device of Sand-Faced Metal Mould Casting brake drum | |
| CN108555257A (en) | The pouring procedure of rising pouring steel ingot | |
| CN204747433U (en) | Round steel ingot mould |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20150519 |
|
| EXPY | Termination of patent right or utility model |