CN1022809C - Craphite crystallizer for upper leading continuous casting - Google Patents
Craphite crystallizer for upper leading continuous casting Download PDFInfo
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- CN1022809C CN1022809C CN 91106428 CN91106428A CN1022809C CN 1022809 C CN1022809 C CN 1022809C CN 91106428 CN91106428 CN 91106428 CN 91106428 A CN91106428 A CN 91106428A CN 1022809 C CN1022809 C CN 1022809C
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- annular groove
- liquid
- inlet opening
- stem
- graphite crystallizer
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Abstract
The present invention discloses a graphite crystallizer for upper leading continuous casting, and relates to upper leading continuous casting equipment. The new structure of the graphite crystallizer is disclosed in the technical scheme using a cast pipe material as an example. The graphite crystallizer is mainly composed of an outer sleeve and a core post, wherein a bottom seat is processed at the bottom end of the core post and is tightly connected with a liquid resisting sleeve and the outer sleeve. A ring groove is arranged on the liquid resisting sleeve. The inner wall is provided with a liquid feeding hole of the ring groove, and the liquid feeding hole is communicated with a liquid feeding hole of a resisting sleeve at the shaft center of the liquid resisting sleeve; an outer liquid feeding hole is arranged on the outer sleeve in the corresponding position of the ring groove. A liquid guiding groove is arranged on the liquid resisting sleeve above the ring groove. The formed graphite crystallizer can have the function of refining tissue crystal grains of a casting blank.
Description
The present invention relates to be on draw continuous casting equipment, draw the graphite crystallizer that casts usefulness continuously on especially.
Draw in the continuous casting last, molten metal is that crystallization and freezing becomes strand in graphite crystallizer.The structure of existing graphite crystallizer as the translation on 35 pages of " metallurgy " periodical 1980 the 9th the 5th phases of volume " stretching copper material produce in direct casting technology " author M. Lan Danai (MRanTanen) introduced.Be the structure of example prior art graphite crystallizer now with the graphite crystallizer that more typically is used for casting tubing, generally be by overcoat and stem stem or claim that plug constitutes, cavity between overcoat and stem stem is a crystallization cavity, and molten metal is frozen into strand at this and draws on quilt simultaneously; Molten metal is to enter crystallization cavity by the lead channel of reserving between overcoat and the stem stem.More steady when this structural metal liquid enters crystallization cavity, help grain growth, therefore exist cast out strand organize crystal grain bigger, corresponding its mechanical performance is just relatively poor, has limited the defectives such as range of application of this type of strand.
The objective of the invention is to reach refinement cast sturcture crystal grain, improve the strand mechanical performance, thereby overcome the defective that exists in the prior art by the structure of improving existing graphite crystallizer.
The technical program realizes by following measure: at the Craphite crystallizer for upper leading continuous casting that is made of overcoat and stem stem, the special character of this programme is to process the external diameter base identical with the overcoat external diameter in the bottom of stem stem, and this base closely is connected with the overcoat bottom; Above base, be processed into the close-fitting liquid-blocking sleeve of external diameter and outer casing internal diameter, be processed into the resistance cover inlet opening of blind hole in the axle center of liquid-blocking sleeve along the stem stem axis; Have annular groove with the stem stem axis coaxle in the vertical centre position of liquid-blocking sleeve; Having equally distributed at least two annular groove inlet openings on annular groove internal diameter cylinder communicates with resistance cover inlet opening; Be processed with equally distributed at least three intake chutes on the liquid-blocking sleeve on annular groove top, intake chute one end communicates with annular groove, and another amount end communicates with the crystallization cavity of graphite crystallizer; The position of corresponding annular groove on the coat has at least three equally distributed outer inlet openings in addition.In addition also have more concrete characteristics, promptly the cross-sectional area of resistance cover inlet opening 10 should have enough molten metal supplies to guarantee each annular groove inlet opening 4 more than or equal to each annular groove inlet opening 4 cross-sectional area sum.Resistance cover inlet opening 10 its cecum positions as blind hole get final product in the upper end of annular groove 6, and too high mechanical strength to whole stem stem is unfavorable also to be there is no need.For intake chute 3 its side bus of being opened on the annular groove 6 upper end liquid-blocking sleeves will and the side bus of liquid-blocking sleeve 7 between 0～40 degree angle is arranged.The cross-sectional area sum of each intake chute 3 accounts for 5～30% in the anchor ring of annular groove 6 vertical stem stem axis is long-pending simultaneously.Adopting this, two to select technical characterictic be to be in when making molten metal enter crystallization cavity 9 to spray sample motion or the motion of rotation sample.So molten metal is in unpeaceful turbulent motion state at crystal region, has destroyed the growth conditions of crystal grain when molten metal solidifies, and makes crystal grain be difficult for growing up, and therefore can obtain the effect of refinement strand crystal grain.Also have each annular groove inlet opening 4 can not be coaxial with the outer inlet opening 5 on each overcoat 1 in addition, two axial lines can be on same overcoat cross section, but the arc length of its angle correspondence on outer casing inner wall more preferably greater than or equal closing of two pore radius.Because the molten metal in the annular groove 6 enters by annular groove inlet opening 4 and outer inlet opening 5, and two holes are opposite to the direction of annular groove 6 liquor chargings, if two holes are coaxial, promptly Kong Yukong is corresponding mutually, and the conflict that this will cause the input molten metal is unfavorable for smooth liquor charging.
The graphite crystallizer that adopts above-mentioned technical characterictic to constitute, be in turbulent motion or the state that rotatablely moves in the time of can making molten metal enter crystallization cavity, destroyed the condition of molten metal grain growth when solidification and crystallization, force crystal grain not grow up, reach the purpose that makes the continuous casting billet structure grain refinement thus, grain refinement its mechanical performance of strand all be improved, enlarged the range of application of strand, overcome the defective that exists in the prior art, produce obvious and outstanding effect, this programme does not influence the employing that improves other measures of slab quality simultaneously.
Description of drawings is as follows:
Fig. 1 is the part cross-sectional schematic of the technical program embodiment;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 be among Fig. 1 A-A to cross-sectional schematic.
By explanation, further describe technical characterictic of the present invention below in conjunction with accompanying drawing to embodiment.One garden cylindricality overcoat 1 is arranged in the technical program, and there is a taper stem stem 2 in the chamber within it, and the cavity that forms between them is a crystallization cavity 9.Be processed into the base 8 that an external diameter equates with overcoat 1 external diameter in the bottom of stem stem 2, base 8 will closely be connected with overcoat 1 bottom contact portion.External diameter and the close-fitting liquid-blocking sleeve 7 of overcoat 1 internal diameter are processed in the top of base 8.In liquid-blocking sleeve 7 vertical centre positions, have annular groove 6 with stem stem 2 axis coaxles.Have at least two equally distributed annular groove inlet openings 4 on annular groove 6 internal diameter cylinders, present embodiment has six equally distributed annular groove inlet openings 4.Liquid-blocking sleeve 7 will be at its place, axle center along blind hole that penetrates base 8 of axis processing of stem stem 2; As resistance cover inlet opening 10, and communicate with annular groove inlet opening 4 on the annular groove 6, the cecum position of the resistance cover inlet opening 10 of blind hole gets final product in the upper end of annular groove 6, and is too high also unnecessary, can influence mechanism's intensity of stem stem 2 on the contrary.The cross-sectional area of resistance cover inlet opening 10 is greater than or equals each annular groove inlet opening 4 cross-sectional area sum in addition, to guarantee the needs of annular groove inlet opening 4 feed flows.The cross-sectional area that hinders cover inlet opening 10 in the present embodiment is four times of each annular groove inlet opening 4 cross-sectional area sum.Also will be processed with at least three equally distributed intake chutes 3 on the liquid-blocking sleeve 7 on annular groove 6 tops, intake chute 3 one ends communicate with annular groove 6, and the other end communicates with crystallization cavity 9.The angle that 0～40 degree will be arranged between the side bus of the side bus of intake chute 3 and liquid-blocking sleeve 7, and the cross-sectional area sum of each intake chute 3 account for that annular groove 6 vertical stem stem 2 axis anchor rings amass 5～30%.Six intake chutes 3 are arranged in the present embodiment, and the angle between its side bus and liquid-blocking sleeve 7 side bus is 30 degree, six intake chute 3 cross-sectional area sums account for anchor ring long-pending 24%.In addition the position of corresponding annular groove 6 on overcoat 1 also will have at least three, and embodiment is six, equally distributed outer inlet opening 5.The axis of each the annular groove inlet opening 4 on the axis of each outer inlet opening 5 and the corresponding annular groove 6 can be on same overcoat cross section, but two axial lines can not overlap certain angle will be arranged.Angle between the present embodiment two axial lines is 30 degree, inlet opening 5 and 4 liang of pore radius sums of annular groove inlet opening outside corresponding arc length on overcoat 1 inwall is greater than.Use the graphite crystallizer that above-mentioned technical characterictic has promptly constituted the technical program.Except that described technology contents, implement other technologies involved in the present invention, be the known content of this professional domain those of ordinary skill, need not to describe in detail.The technical program is to be that example is come the open new structure of graphite crystallizer with casting tubing, if in order to casting bar or band, only needs stem stem with the liquid-blocking sleeve top partly remove and gets final product.When using the graphite crystallizer of the technical program, the crystal region of molten metal in crystallization cavity is preferably in 10～30 millimeters places on the liquid-blocking sleeve, can obtain desirable effect.
Claims (6)
1, the Craphite crystallizer for upper leading continuous casting that is made of overcoat and stem stem the invention is characterized in that the bottom of stem stem is processed with the external diameter base identical with the overcoat external diameter, and closely is connected with the overcoat bottom; The axle center of being processed into the close-fitting liquid-blocking sleeve of external diameter and outer casing internal diameter, liquid-blocking sleeve above base is processed with the resistance cover inlet opening of a blind hole along the stem stem axis; In the vertical centre position of liquid-blocking sleeve, have annular groove with the stem stem axis coaxle; Having equally distributed at least two annular groove inlet openings on annular groove internal diameter cylinder communicates with resistance cover inlet opening; Be processed with equally distributed at least three intake chutes on the liquid-blocking sleeve on annular groove top, intake chute one end communicates with annular groove, and the other end communicates with the crystallization cavity of graphite crystallizer; The position of corresponding annular groove has at least three equally distributed outer inlet openings on the coat.
2,, it is characterized in that the upper end of described resistance cover inlet opening 10 its cecum positions at annular groove 6 according to the described graphite crystallizer of claim 1.
3,, it is characterized in that hindering the cross-sectional area of cover inlet opening 10 more than or equal to each annular groove inlet opening 4 cross-sectional area sum according to the described graphite crystallizer of claim 1.
4,, it is characterized in that to have between the side bus of the side bus of intake chute 3 and liquid-blocking sleeve 7 angle of 0～40 degree according to the described graphite crystallizer of claim 1.
5,, it is characterized in that the cross-sectional area sum of each intake chute 3 accounts for 5～30% of annular groove 6 vertical stem shaft wire loop areas according to the described graphite crystallizer of claim 1.
6,, it is characterized in that each annular groove inlet opening 4 and each outer inlet opening 5 disalignments according to the described graphite crystallizer of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106428 CN1022809C (en) | 1991-05-28 | 1991-05-28 | Craphite crystallizer for upper leading continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106428 CN1022809C (en) | 1991-05-28 | 1991-05-28 | Craphite crystallizer for upper leading continuous casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1067196A CN1067196A (en) | 1992-12-23 |
| CN1022809C true CN1022809C (en) | 1993-11-24 |
Family
ID=4907846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91106428 Expired - Lifetime CN1022809C (en) | 1991-05-28 | 1991-05-28 | Craphite crystallizer for upper leading continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1022809C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115106488B (en) * | 2022-06-30 | 2023-07-21 | 宁波金田铜业(集团)股份有限公司 | Drainage device for copper alloy casting |
-
1991
- 1991-05-28 CN CN 91106428 patent/CN1022809C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1067196A (en) | 1992-12-23 |
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