CN201455212U - Copper pipe for continuous casting of square billets, round billets and rectangle billets - Google Patents
Copper pipe for continuous casting of square billets, round billets and rectangle billets Download PDFInfo
- Publication number
- CN201455212U CN201455212U CN2009201107693U CN200920110769U CN201455212U CN 201455212 U CN201455212 U CN 201455212U CN 2009201107693 U CN2009201107693 U CN 2009201107693U CN 200920110769 U CN200920110769 U CN 200920110769U CN 201455212 U CN201455212 U CN 201455212U
- Authority
- CN
- China
- Prior art keywords
- copper pipe
- billets
- continuous casting
- coating
- thermal barrier
- 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
Images
Landscapes
- Continuous Casting (AREA)
Abstract
A copper rod for continuous casting of square billets, round billets and rectangle billets belongs to the field of continuous casting device of metallurgical industry, and comprises a copper pipe main body (2), an outer wall heat-insulating plating layer (3) and an inner wall anti-friction plating layer (4), wherein the heat-insulating plating layer (3) is arranged on the upper zone of the outer surface of the copper pipe main body (2), and the inner surface is provided with the anti-friction plating layer (4), the height of the copper pipe is 700-1000mm, and the pipe thickness of the copper pipe is 14-30mm. The height of the copper pipe is 700-1000mm. The copper pipe has the advantages that the copper pipe can reduce 30%-50% of heat flow density of the steel liquid level and a region 300-400mm below the steel liquid level, lowers the temperature gradient before the initial coagulation of steel liquid, improves the equiax crystal rate of casting blanks, and improves internal quality of casting blank.
Description
Technical field
The utility model belongs to the continuous casting installation for casting field of metallurgy industry, particularly a kind of copper pipe that is used for square billet, circle base and rectangular billet caster.
Background technology
Defectives such as the segregation of continuous casting billet and crackle are the inhomogeneity key factors of intensity, toughness, service life and structure property that influences steel, and the gross segregation problem of high-carbon, high-alloy steel continuous casting billet is a puzzlement continuous casting circle key technical problem for many years.The equiaxial crystal ratio, the thinning solidification structure that improve strand are the important means that alleviates the continuous casting billet center segregation.At present the technical measures that adopt mainly comprise and reduce superheat of liquid steel, gently depress with electromagnetic agitation etc., and in addition, the control that crystallizer conducts heat also has facilitation to the raising of strand equiaxial crystal ratio.
Solidifying of molten steel originates in crystallizer, and crystallizer is as the core component of conticaster, and its effect is the band liquid core strand that obtains to have Reasonable Shape and certain intensity.The heat transfer that slows down crystallizer top has the following advantages: (1) improves the uniformity of initial solidification thickness of the shell growth, suppresses the generation of slab surface crack; (2) thermograde of reduction solidification front suppresses the growth of column crystal, realizes the transformation of column crystal to equiax crystal in advance, thereby increases substantially the equiaxial crystal ratio of strand, reduces center segregation and loose degree.
With the heat transfer that slows down crystallizer top is target, patent 98119193.2 has proposed the crystallizer made by high conductivity material, its target is to improve the surface quality of continuous casting billet, principal character be provided with at outer surface a kind of than the crystallizer body coating material of low heat conductivity more, coating is single nickel and nickel alloy, at the coating of crystallizer upper semisection outer surface, this patent does not quantize explanation to the particular location of its thickness of coating and setting.Patent 02131319.9 has proposed a kind of mould product with heat insulation and wear-resistant coating, its target is to improve the internal soundness of strand, principal character be coated with on inner surface top a kind of than the crystallizer body heat insulation and wear resistance material of low heat conductivity more, thickness of coating is 0.2～5.0mm, the coating material is cermet material and metal material, but because the difference of the thermal coefficient of expansion of this heat-barrier material and crystallizer bulk material is bigger, therefore very high to adhesive force, the requirement of coating surface smoothness of coating and crystallizer body, be difficult to form industrial scale.
Summary of the invention
The purpose of this utility model is to provide a kind of copper pipe that is used for square billet, circle base and rectangular billet caster, and it is simple in structure, easy to make, the improved effect of strand internal soundness obvious, satisfy production requirement service life.
The utility model comprises copper pipe body, outer wall thermal barrier coating, inwall scuff-resistant coating, and zone, this external surface of copper pipe top has thermal barrier coating, and inner surface has scuff-resistant coating.The height of copper pipe is 700～1000mm, and the strand cross section of being cast is square, circle or rectangle, and the length of side of square billet or rectangular bloom is 120～380mm, and the diameter of circle base is 150～300mm, and it is constant that the wall thickness of copper pipe keeps, and is 14～30mm.
The top of the thermal barrier coating of outer surface of tube wall is 40～60mm apart from the minimum range s of copper pipe upper limb, and the bottom of the thermal barrier coating 3 of outer surface of tube wall is 1/2 of a copper pipe total height apart from the distance H of copper pipe upper limb, and the total inner surface of copper pipe body has all plated scuff-resistant coating 4.
Copper pipe can reduce the molten steel face and under the heat flow density 30%～50% in 300～400mm zone, reduce the thermograde of molten steel initial stage solidification front, improve the strand equiaxial crystal ratio, improve the internal soundness of strand.
Description of drawings
Fig. 1 is a structure chart of the present utility model.Wherein, molten steel face 5 in the thermal barrier coating 3 of Crystallizer tube 1, silver-bearing copper pipe 2, outer surface of tube wall, the scuff-resistant coating 4 of inner surface of tube wall, the Crystallizer tube, the top of the thermal barrier coating of s vial wall outer surface is apart from the minimum range of Crystallizer tube upper limb, H be the bottom of thermal barrier coating of outer surface of tube wall apart from the distance of Crystallizer tube upper limb, D2 and D3 represent the wall thickness of the first half copper pipe body and outer wall thermal barrier coating respectively.
The specific embodiment
The utility model comprises copper pipe body, outer wall thermal barrier coating, inwall scuff-resistant coating, and zone, this external surface of copper pipe top has thermal barrier coating, and inner surface has scuff-resistant coating.The height of copper pipe is 700～1000mm, and the strand cross section of being cast is square, circle or rectangle, and the length of side of square billet or rectangular bloom is 120～380mm, and the diameter of circle base is 150～300mm, and it is constant that the wall thickness of copper pipe keeps, and is 14～30mm.
The material that constitutes the copper pipe body 2 of copper pipe is the chromium zirconium copper that the silver-bearing copper of silver content 0.08wt.%～0.09wt.% or the beryllium-bronze that contains beryllium amount 0.2wt.%～0.5wt.% or chromium and zirconium content are respectively 0.60wt.%～0.70wt.% and 0.08wt.%～0.12wt.%, the thermal barrier coating 3 of copper pipe outer surface is composited by nickel and nickel-chromium alloy, chromium content is 20wt.%～30wt.% in the nickel-chromium alloy, the scuff-resistant coating 4 of copper pipe plating inner surface is a nickel cobalt (alloy), and wherein cobalt content is 10wt.%～20wt.%.
The Application of Copper target be reduce molten steel face 5 in the copper pipe and under the heat flow density 30%～50% in 300～400mm zone, reduce the thermograde of molten steel initial stage solidification front, improve the strand equiaxial crystal ratio, improve the internal soundness of strand.
Claims (3)
1. copper pipe that is used for square billet, circle base and rectangular billet caster, it is characterized in that, comprise copper pipe body (2), outer wall thermal barrier coating (3), inwall scuff-resistant coating (4), zone, copper pipe body (2) outer surface top has thermal barrier coating (3), and inner surface has scuff-resistant coating (4); The height of copper pipe is 700～1000mm, and the wall thickness of copper pipe is 14～30mm.The height of copper pipe is 700～1000mm.
2. copper pipe according to claim 1 is characterized in that, described square billet, the rectangular bloom cross section length of side are 120～380mm, and the diameter of circle base is 150～300mm.
3. copper pipe according to claim 1, it is characterized in that: the top of the thermal barrier coating of outer surface of tube wall (3) is 40～60mm apart from the minimum range s of copper pipe upper limb, the bottom of the thermal barrier coating of outer surface of tube wall (3) is 1/2 of a copper pipe total height apart from the distance H of copper pipe upper limb, and the total inner surface of copper pipe body (2) has all plated scuff-resistant coating (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201107693U CN201455212U (en) | 2009-08-12 | 2009-08-12 | Copper pipe for continuous casting of square billets, round billets and rectangle billets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201107693U CN201455212U (en) | 2009-08-12 | 2009-08-12 | Copper pipe for continuous casting of square billets, round billets and rectangle billets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201455212U true CN201455212U (en) | 2010-05-12 |
Family
ID=42382562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201107693U Expired - Lifetime CN201455212U (en) | 2009-08-12 | 2009-08-12 | Copper pipe for continuous casting of square billets, round billets and rectangle billets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201455212U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103298574A (en) * | 2011-06-27 | 2013-09-11 | Kme德国有限及两合公司 | Method for producing a mold tube |
-
2009
- 2009-08-12 CN CN2009201107693U patent/CN201455212U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103298574A (en) * | 2011-06-27 | 2013-09-11 | Kme德国有限及两合公司 | Method for producing a mold tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103882279B (en) | A kind of melting method of high-strength gray cast iron part | |
| CN101648263B (en) | Bloom continuous casting dynamic soft reduction process for high-quality tire cord steel | |
| CN103882254B (en) | Have the xantal continuous casting tubing and production method thereof of high strength, high ductility concurrently | |
| CN101817072B (en) | Casting equipment and method using solid-liquid two-phase region temperature as casting mold temperature | |
| CN103170588B (en) | A kind of warm type casting method | |
| CN103008577B (en) | Preparation method and mold for microdefect high-utilization rate high-quality static ingot | |
| CN103849794A (en) | Environmental self-lubricating wear-resistant copper alloy and preparation method thereof | |
| CN107574362B (en) | A kind of antifriction alloy composite ring and its manufacturing method, manufacturing device | |
| CN201455212U (en) | Copper pipe for continuous casting of square billets, round billets and rectangle billets | |
| CN101992282B (en) | Continuous casting method | |
| Tao et al. | Longitudinal corner crack of chamfered slab and optimization of mould | |
| CN110695349B (en) | CSP sheet billet continuous casting high-pulling-speed submerged nozzle and manufacturing method thereof | |
| CN105002424A (en) | Continuous casting method for high-carbon low-nitrogen steel | |
| CN202943219U (en) | Die of excellent static ingot with microdefect and high utilization rate | |
| CN201324816Y (en) | Composite pouring device of continuous caster | |
| CN201261061Y (en) | One-chamber-two-stove vacuum intermediate frequency induction smelting furnace | |
| CN104493118B (en) | A kind of middle low-carbon high strength steel homogenizes the production method of strand | |
| CN109382490B (en) | YQ450NQR 1B-shaped steel bloom surface quality control method | |
| CN103480814A (en) | Method for widening chrome steel tail blank | |
| CN106493311A (en) | The production method of high-temperature corrosion-resistant alloy electrode ingot | |
| CN202683994U (en) | Vertical continuous casting device of stainless steel | |
| CN107127315B (en) | A kind of production method and its device of low internal flaw continuous casting heavy slab | |
| CN203018741U (en) | Water-gap slag line erosion resisting device | |
| CN202387929U (en) | Tubular crystallizer | |
| CN102554155A (en) | Tubular crystallizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |