CN202667581U - Continuous casting device of gradient steel materials - Google Patents
Continuous casting device of gradient steel materials Download PDFInfo
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- CN202667581U CN202667581U CN 201220180323 CN201220180323U CN202667581U CN 202667581 U CN202667581 U CN 202667581U CN 201220180323 CN201220180323 CN 201220180323 CN 201220180323 U CN201220180323 U CN 201220180323U CN 202667581 U CN202667581 U CN 202667581U
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- crystallizer
- gradient
- alloying pellet
- alloy block
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Abstract
The utility model provides a continuous casting device of gradient steel materials. The continuous casting device comprises a crystallizer, a spray gun and an electromagnetic coil, wherein the spray gun is used to enable an alloying pellet or an alloying block to be added into liquid steel, and the electromagnetic coil is arranged at the upper end of the outer portion of the crystallizer and exerts electromagnetic force to the alloying pellet or the alloying block. According to the continuous casting device of gradient steel materials, steel materials with different surface components and internal components can be obtained, environmental pollution is avoided, and production cost is lowered.
Description
Technical field
The utility model relates to a kind of continuous casting installation for casting of ferrous materials, and more particularly, the utility model relates to a kind of continuous casting installation for casting of gradient ferrous materials.
Background technology
The surface treatment of material refers to make material surface or top layer have the processing procedure of property by the method for machinery, physics or chemistry.Improve corrosion resistance, wearability of material etc. such as the method for invading plating, thermal spraying, thermo-chemical treatment by heat.Normally used process for treating surface has the technology such as carburizing, nitriding, carbo-nitriding in ferrous materials, these process for treating surface especially are applied to the materials such as pinion steel, bearing steel, abrasion-resistant stee, make steel surface have high rigidity and high-wearing feature, and heart section have higher toughness and intensity.Yet thermo-chemical treatment exists many inevitable shortcomings, take carburizing as example, except environmental pollution, resource consumption, cost increase, also may cause internal oxidation, grain coarsening, separate out the defective such as net carbide.If ferrous materials has certain component gradient, then can reduce or omit some process of surface treatment, so the production of gradient ferrous materials have certain economic implications and social effect.
Steel spraying powder is one of secondary refining method that belongs to small investment, instant effect, mainly utilizes carrier gas that " metallurgical material " is written into the molten steel depths by spray gun, is used for the external refining processes such as deoxidation of molten steel, desulfurization or carburetting.
Continuous casting, namely continuous casting steel machine is constantly the molten steel after the refining to be joined in the crystallizer, and the molten steel forming technique of pulling out from the crystallizer below behind the coagulation forming.If can in casting process, produce the gradient ferrous materials, then can economize on resources and reduce cost.
To sum up, need a kind of continuous casting installation for casting that the gradient ferrous materials is provided, the problems such as environmental pollution of bringing to overcome the methods such as chemical treatment.
The utility model content
In order to overcome the problems of the prior art, provide a kind of continuous casting installation for casting that can reduce cost and avoid the gradient ferrous materials of environmental pollution.
The continuous casting installation for casting of gradient ferrous materials of the present utility model comprises: crystallizer; Spray gun is used for alloying pellet/alloy block is added molten steel; Solenoid is positioned at the outer upper ends of crystallizer, and described alloying pellet/alloy block is applied electromagnetic force.
Can obtain the surface component ferrous materials different with internal composition according to continuous casting installation for casting of the present utility model, and can avoid environmental pollution, and reduce production cost.
Description of drawings
By the reference accompanying drawing the utility model is described in detail, it is more obvious that feature and advantage of the present utility model will become.
Fig. 1 is the cutaway view that illustrates according to the continuous casting installation for casting of the gradient ferrous materials of the utility model embodiment.
The specific embodiment
Hereinafter, describe with reference to the accompanying drawings embodiment of the present utility model in detail.
Fig. 1 is the cutaway view that illustrates according to the continuous casting installation for casting of the gradient ferrous materials of the utility model embodiment.In Fig. 1, label 1 is molten steel, and label 2 is slag, and label 3 is crystallizer, and label 4 is solenoid, and label 5 is alloying pellet/alloy block, and label 6 is spray gun, and label 7 is that high solutes content is outer, and label 8 is the solute gradient layer, and label 9 is sandwich layer.
Continuous casting installation for casting according to the gradient ferrous materials of the utility model embodiment comprises: crystallizer 3, be equipped with molten steel 1 and slag 2 in the crystallizer 3; Spray gun 6 adds alloying pellet/alloy block 5 in the molten steel 1; Solenoid 4 is positioned at the outer upper ends of crystallizer 3.
When utilizing above-mentioned continuous casting installation for casting to carry out continuous casting, the magnetic field that utilizes solenoid 4 to produce produces electric rotating magnetic force in molten steel, thereby molten steel rotates in crystallizer.In molten steel, inject alloying pellet/alloy block 5 by spray gun 6, because molten steel rotates alloying pellet/alloy block 5 evenly the distributing in interior week along crystallizer 3 that therefore sprays under the effect of electromagnetic field.That is alloying pellet/the alloy block 5 that, sprays into is quick Interface Moving to molten steel 1 and crystallizer 3 under the effect of electromagnetic force.Enter the heat melts of the alloying pellet/alloy block 5 absorption molten steel in the molten steel 1.
Because the content of some element is higher in alloying pellet/alloy block 5, thereby alloying pellet/alloy block 5 can change the local part of molten steel, is formed with the molten steel of certain solute concentration gradient.For example, alloying pellet/alloy block 5 can contain the carbon of high level.In order to satisfy the demand of ferrous materials smelting, can select arbitrarily the composition of alloying pellet/alloy block 5.
In addition, because alloying pellet/alloy block 5 absorbing heats, so will reduce the temperature of the molten steel of circumferential portion in the crystallizer, and when reaching molten steel surface, alloying pellet/alloy block 5 melts fully, not free spread fully, form the strand with finite concentration gradient so solidify in interior all positions of crystallizer 3.That is, the position near internal surface of crystallizer forms high solutes content skin 7, and the core formation sandwich layer 9 at crystallizer 3 forms solute gradient layer 8 between high solutes content outer 7 and sandwich layer 9.
In addition, if the density of alloying pellet/alloy block 5 is greater than the density of molten steel 1, then alloying pellet/alloy block 5 can be to the bottom motion of crystallizer 3, simultaneously constantly absorbing heat dissolving, be formed at last near the chemical composition of the position of crystallizer 3 inwalls from the different steel billet of the chemical composition of the core of crystallizer 3.
Preferably, the density of alloying pellet/alloy block 5 is greater than the density of molten steel, thereby alloying pellet/alloy block can successfully move downward.In addition, preferably, alloying pellet/alloy block 5 is almost spherical, and wherein, the surface area of alloying pellet/alloy block 5 and the ratio of volume are at 0.3～0.6cm
-1Scope in.In general, the ratio of surface area and volume is larger, illustrates that the alloying pellet/alloy block 5 of equal volume is just larger with the contact area of molten steel, and dissolution velocity is just faster.
According to the utility model, the cross-sectional area of spray gun 6 is 2 times to 3 times of maximum cross-section area of alloying pellet/alloy block 5, and uses inert gas to spray alloying pellet/alloy block as carrier.
Preferably, the degree of superheat of molten steel is 10 to 15.
For the periphery at ferrous materials is formed uniformly gradient, can uses a plurality of solenoids 4 and a plurality of spray gun 6, thereby form the steel billet that outer surface has the chemical composition gradient equably.
Continuous casting installation for casting according to gradient ferrous materials of the present utility model, by the outer setting solenoid 4 at crystallizer, so that utilize alloying pellet/alloy block 5 that spray gun 6 sprays into to be dissolved in interior week in the molten steel along crystallizer 3, thereby can control the surface composition of the ferrous materials that obtains behind the continuous casting, that is, make the surface component of ferrous materials different with internal composition.Therefore, utilize the ferrous materials that can obtain having the chemical composition of gradient according to continuous casting installation for casting of the present utility model.
Compare with the method for by chemical heat treatment method etc. the surface of ferrous materials being processed in the prior art, utilize and to avoid environmental pollution according to continuous casting installation for casting of the present utility model, and reduced production cost.The ferrous materials that utilizes the continuous casting installation for casting of gradient ferrous materials of the present utility model to obtain can be used for pinion steel, bearing steel etc.
Although the mode with example illustrates and described the utility model, scope of the present utility model is not subjected to the restriction of above-described embodiment, in the situation that does not break away from scope of the present utility model, can carry out various modifications and change to above-described embodiment.
Claims (1)
1. the continuous casting installation for casting of a gradient ferrous materials is characterized in that described continuous casting installation for casting comprises: crystallizer;
Spray gun is used for alloying pellet/alloy block is added molten steel;
Solenoid is positioned at the outer upper ends of crystallizer, and described alloying pellet/alloy block is applied electromagnetic force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220180323 CN202667581U (en) | 2012-04-25 | 2012-04-25 | Continuous casting device of gradient steel materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220180323 CN202667581U (en) | 2012-04-25 | 2012-04-25 | Continuous casting device of gradient steel materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202667581U true CN202667581U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220180323 Expired - Fee Related CN202667581U (en) | 2012-04-25 | 2012-04-25 | Continuous casting device of gradient steel materials |
Country Status (1)
| Country | Link |
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| CN (1) | CN202667581U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672125A (en) * | 2012-04-25 | 2012-09-19 | 莱芜钢铁集团有限公司 | Continuous casting equipment and method of gradient steel materials |
| CN110653350A (en) * | 2019-09-30 | 2020-01-07 | 鞍钢股份有限公司 | Manufacturing method of casting blank with high carbon content on surface layer |
-
2012
- 2012-04-25 CN CN 201220180323 patent/CN202667581U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672125A (en) * | 2012-04-25 | 2012-09-19 | 莱芜钢铁集团有限公司 | Continuous casting equipment and method of gradient steel materials |
| CN110653350A (en) * | 2019-09-30 | 2020-01-07 | 鞍钢股份有限公司 | Manufacturing method of casting blank with high carbon content on surface layer |
| CN110653350B (en) * | 2019-09-30 | 2021-05-28 | 鞍钢股份有限公司 | Manufacturing method of casting blank with high carbon content on surface layer |
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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: 20130116 Termination date: 20160425 |