CN105033199A - Graphite crystallizer for horizontal continuous casting - Google Patents
Graphite crystallizer for horizontal continuous casting Download PDFInfo
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- CN105033199A CN105033199A CN201510553255.5A CN201510553255A CN105033199A CN 105033199 A CN105033199 A CN 105033199A CN 201510553255 A CN201510553255 A CN 201510553255A CN 105033199 A CN105033199 A CN 105033199A
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- graphite
- crystallizer
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- core bar
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Abstract
The invention relates to a graphite crystallizer for horizontal continuous casting. The graphite crystallizer comprises a crystallizer body. The crystallizer body comprises a tubular graphite sleeve. A core bar with the fixed diameter is arranged in the middle of the graphite sleeve. A casting cavity is formed between the graphite sleeve and the core bar. A metal liquid flow-in hole communicated with the casting cavity is formed in the upper end of the graphite sleeve. The core bar comprises a taper section, a straight line section and a gradient section from top to bottom. An annular groove inflated with nitrogen is formed in the lower end of the graphite sleeve. A deep hole is formed in one side of the graphite sleeve. Inflated nitrogen enters the annular groove, and nitrogen protection is carried out during pulling casting. The graphite crystallizer is simple in structure and reasonable in design. An original core bar with the taper of 2 degrees is changed to be composed of the taper section, the straight line section and the gradient section, a hollow casting blank can be smoothly pulled out, and the inner wall of the casting blank is smooth without crystal lines. The production manner of an original extrusion technology is changed, and the yield and the product pass percent are increased.
Description
Technical field
The present invention relates to the novel graphite crystallizer of a kind of red copper and horizontal continuous casting of copper alloy, belong to casting in bronze technique preparing technical field.
Background technology
The inner wall of casting blank of the ∮ 90*25 of horizontal casting has the rugged crystallization line of spirality to exist always both at home and abroad at present, and strand, after rolling and being drawn into copper pipe, still has crystallization line to exist on inspection after inwall pickling; The horizontal casting of my company, tandem rolling, connect and draw the copper pipe on production line to produce this situation no exceptionly, Here it is horizontal casting and the species diversity that pressing method exists, govern us and commercially develop on the direction of high accuracy copper pipe; Along with client requires down without drawing trace the pickling of copper pipe inwall, how on the inner wall of casting blank of horizontal casting ∮ 90*25, eliminating crystallization line, to improve the quality of products, reduce production cost, is an important step in whole copper pipe production process.
Summary of the invention
The object of the invention is in order to solve the problem easily producing the rugged crystallization line of spirality in prior art for the inner wall of casting blank of the mould casting of horizontal casting, to provide a kind of novel structure, the graphite crystallizer for horizontal casting reasonable in design.
The present invention adopts following technical scheme: a kind of graphite crystallizer for horizontal casting, comprise crystallizer body, described crystallizer body comprises the graphite cannula of a tubulose, the plug of sizing is provided with in the middle of described graphite cannula, casting cavity is formed between described graphite cannula and plug, described graphite cannula upper end offers the metal liquid stream hand-hole being communicated with casting cavity, described plug comprises tapered section, straightway and gradient section from top to bottom, described graphite cannula lower end is provided with the cannelure for passing into nitrogen, and the side of described graphite cannula is provided with deep hole.
Further, the length of the straightway of described plug is 130 ~ 140mm.
Further, the width of described cannelure is 4 ~ 5mm.
Further, the tapering of described tapered section is 28 ~ 30 °.
Further, the length of described gradient section is 38 ~ 40mm.
Further, the side of described graphite cannula is provided with ∮ 5 deep hole.
Novel structure of the present invention, reasonable in design, former plug 2 ° of taperings are arranged change into and be made up of tapered section, straightway and gradient section three part, hollow casting blank can be pulled out smoothly, inner wall of casting blank is smooth, and nodeless mesh line exists, and changes the mode of production of former extrusion process, improve output, and improve the qualification rate of product.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Reference numeral: graphite cannula 1, plug 2, tapered section 2-1, straightway 2-2, gradient section 2-3, casting cavity 3, metal liquid stream hand-hole 4, cannelure 5, deep hole 6.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of graphite crystallizer for horizontal casting, comprise crystallizer body, crystallizer body comprises the graphite cannula 1 of a tubulose, the plug 2 of sizing is provided with in the middle of graphite cannula 1, casting cavity 3 is formed between graphite cannula 1 and plug 2, graphite cannula 1 upper end offers the metal liquid stream hand-hole 4 being communicated with casting cavity 3, plug 2 comprises tapered section 2-1 from top to bottom, straightway 2-2 and gradient section 2-3, the tapering of tapered section 2-1 is 30 °, the length of the straightway 2-2 of plug is 130 ~ 140mm, the length of gradient section 2-3 is 40mm, graphite cannula 1 lower end is provided with the cannelure 5 for passing into nitrogen, the width of cannelure 5 is 5mm, the side of graphite cannula 1 is provided with ∮ 5 deep hole.
Using method: during cast base; pass in deep hole in nitrogen to cannelure and carry out nitrogen protection; and controlled cooling model discharge controls, for 1800L ~ 1900L/H, after the metal liquid stream hand-hole of graphite cannula upper end injects raw material to casting cavity, to pull out hollow casting blank smoothly along plug.Quality requirement: nitrogen protection and air exclusion during cast base; The inner wall of casting blank of pull-out should be smooth, and nodeless mesh line exists.
The hollow casting blank of preparation is become ∮ 48*2.5 bronze pan tube base at planet mill milling, and upper three stretching-machines are pulled to ∮ 29*1.2 copper pipe, cut pickling test inner wall smooth open.Nodeless mesh line copper tube billet is after posterior drawing to >=∮ more than 16 straight tube finished product, through the equal nodeless mesh stria of pickling test, reach the requirement of client to high accuracy copper pipe, former inwall adopts D.C.casting founding strand → sawing → heating → extruding → cold rolling → sawing → operation such as head processed and stretching → bright annealing without drawing the high accuracy copper pipe of trace always, employing the present invention be prepared, compare former process synthesis lumber recovery 58%, significantly improve copper pipe integrated yield 22%, integrated yield reaches more than 80%, production direct cost declines 430 yuan/ton, achieve significant economic benefit.
Claims (5)
1. the graphite crystallizer for horizontal casting, it is characterized in that: comprise crystallizer body, described crystallizer body comprises the graphite cannula (1) of a tubulose, the plug (2) of sizing is provided with in the middle of described graphite cannula (1), casting cavity (3) is formed between described graphite cannula (1) and plug (2), described graphite cannula (1) upper end offers the metal liquid stream hand-hole (4) being communicated with casting cavity, described plug (2) comprises tapered section (2-1) from top to bottom, straightway (2-2) and gradient section (2-3), described graphite cannula (1) lower end is provided with the cannelure (5) for passing into nitrogen, the side of described graphite cannula is provided with deep hole (6).
2., as claimed in claim 1 for the graphite crystallizer of horizontal casting, it is characterized in that: the length of the straightway of described plug (2) is 130 ~ 140mm.
3., as claimed in claim 1 for the graphite crystallizer of horizontal casting, it is characterized in that: the width of described cannelure (5) is 4 ~ 5mm.
4., as claimed in claim 1 for the graphite crystallizer of horizontal casting, it is characterized in that: the tapering of described tapered section (2-1) is 28 ~ 30 °.
5., as claimed in claim 1 for the graphite crystallizer of horizontal casting, it is characterized in that: the length of described gradient section (2-3) is 38 ~ 40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510553255.5A CN105033199A (en) | 2015-09-01 | 2015-09-01 | Graphite crystallizer for horizontal continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510553255.5A CN105033199A (en) | 2015-09-01 | 2015-09-01 | Graphite crystallizer for horizontal continuous casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105033199A true CN105033199A (en) | 2015-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510553255.5A Pending CN105033199A (en) | 2015-09-01 | 2015-09-01 | Graphite crystallizer for horizontal continuous casting |
Country Status (1)
| Country | Link |
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| CN (1) | CN105033199A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114871393A (en) * | 2022-04-27 | 2022-08-09 | 佛山建投华鸿铜业有限公司 | Method for protecting crystallizer by nitrogen to reduce loss |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56134048A (en) * | 1980-03-24 | 1981-10-20 | Mitsubishi Heavy Ind Ltd | Continuous casting method for steel pipe |
| CN101337266A (en) * | 2007-09-30 | 2009-01-07 | 浙江嘉禾管业股份有限公司 | Horizontal continuous casting graphite crystallizer |
| CN201900235U (en) * | 2010-12-14 | 2011-07-20 | 浙江海亮股份有限公司 | Side entering type graphite crystallizer |
| CN202169360U (en) * | 2011-08-25 | 2012-03-21 | 江苏兴荣美乐铜业有限公司 | Graphite crystallizer for improving smoothness of inner wall of horizontal continuous casting blank of copper pipe |
| CN202779648U (en) * | 2012-07-24 | 2013-03-13 | 青岛中冶新材料科技有限公司 | Horizontal continuous casting graphite crystallizer under nitrogen protection |
| CN204975242U (en) * | 2015-09-01 | 2016-01-20 | 无锡隆达金属材料有限公司 | A graphite crystallizer for horizontal continuous casting |
-
2015
- 2015-09-01 CN CN201510553255.5A patent/CN105033199A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56134048A (en) * | 1980-03-24 | 1981-10-20 | Mitsubishi Heavy Ind Ltd | Continuous casting method for steel pipe |
| CN101337266A (en) * | 2007-09-30 | 2009-01-07 | 浙江嘉禾管业股份有限公司 | Horizontal continuous casting graphite crystallizer |
| CN201900235U (en) * | 2010-12-14 | 2011-07-20 | 浙江海亮股份有限公司 | Side entering type graphite crystallizer |
| CN202169360U (en) * | 2011-08-25 | 2012-03-21 | 江苏兴荣美乐铜业有限公司 | Graphite crystallizer for improving smoothness of inner wall of horizontal continuous casting blank of copper pipe |
| CN202779648U (en) * | 2012-07-24 | 2013-03-13 | 青岛中冶新材料科技有限公司 | Horizontal continuous casting graphite crystallizer under nitrogen protection |
| CN204975242U (en) * | 2015-09-01 | 2016-01-20 | 无锡隆达金属材料有限公司 | A graphite crystallizer for horizontal continuous casting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114871393A (en) * | 2022-04-27 | 2022-08-09 | 佛山建投华鸿铜业有限公司 | Method for protecting crystallizer by nitrogen to reduce loss |
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Application publication date: 20151111 |
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| RJ01 | Rejection of invention patent application after publication |