CN202643742U - Seamless calcium iron wire - Google Patents
Seamless calcium iron wire Download PDFInfo
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- CN202643742U CN202643742U CN 201220299639 CN201220299639U CN202643742U CN 202643742 U CN202643742 U CN 202643742U CN 201220299639 CN201220299639 CN 201220299639 CN 201220299639 U CN201220299639 U CN 201220299639U CN 202643742 U CN202643742 U CN 202643742U
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- calcium
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- iron wire
- wire
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Abstract
The utility model relates to a seamless calcium iron wire. The seamless calcium iron wire is of a wire body which is formed in a manner that a middle layer is wrapped by an outer layer, wherein the outer layer is a seamless steel shell, and the middle layer is a calcium wire core layer. The seamless calcium iron wire has the positive and beneficial effects that the seamless calcium iron wire is high in rigidity and can be fed into a deeper part of a steel ladle, the splash is retarded or avoided, calcium can be uniformly distributed in the steel ladle, the service efficiency of a calcium wire is greatly increased, the recovery ratio of the calcium can be increased by 2-5 times, and the inclusion removal effect is better; and the feed quantity of a cored wire can be reduced, the calcium treatment time is saved, the temperature loss during the calcium treatment of molten steel is reduced, and the situation of the increase of nitrogen and oxygen of the molten steel during molten steel treatment is effectively improved.
Description
Technical field
The utility model relates to the liquid steel refining technical field, is specifically related to a kind of seamless calcium iron wire.
Background technology
Wire-feeding technique is the new liquid steel refining technology that grows up after the technology of dusting.Exactly with steel liquid deoxidation, desulfurization, carburetting, be mingled with sex change, the required material of trimming and make thread (solid wire or fill the cored suede of relevant pulvis), use the mechanical forces of feeding wire machine it passed through a kind of novel secondary refining techniques that the molten steel face reaches the molten steel deep with certain speed.With other Secondary Refining Technology particularly the technology of dusting compare, have that recovery rate is high, accurate composition control, equipment are simple, less investment, process safety are reliable.Molten steel cooling less, do not have an advantage such as environmental pollution, thereby since the mid-1970s exploitation, obtained abroad using more and more widely.And existing steel-making and casting mostly are powder core normal packet heart yearn with cored-wire.
The general belt steel thickness of existing cored-wire is 0.4～0.6mm, and fastening uncinus is 4 times of belt steel thickness.And need higher wire-feeding velocity just can make the optimum depth of line feeding ladle, and speed should be controlled at 160～300m/min, can not feed ladle bottom and easily splash because its band steel is thinner, band steel cracking phenomena easily occurs, and calcium, iron can not be evenly distributed in the molten steel.It is unstable that traditional Ca-Si cored-wire, Ca-Al cored-wire are subjected to production technique to affect the recovery rate of Ca, is unfavorable for the control to steel quality.
The relatively seamed product of seamless calcium iron wire, production technique are complicated, and the domestic enterprise that can produce is less, and majority still is in development.And utilize existing Technology to be difficult to produce larger-diameter solid wire, and thinner solid wire needs very high wire-feeding velocity, causes its off-position in ladle wayward.Current, smelter improves the quality of liquid steel refining in the urgent need to the seamless calcium iron wire of better treatment effect, and reduces production costs accordingly.
Summary of the invention
The technical problems to be solved in the utility model provides a kind ofly can slow down the molten steel splash, improve the calcium rate of recovery, remove to be mingled with effective seamless calcium iron wire.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of seamless calcium iron wire is the line body that is formed by skin parcel middle layer, and described skin is seamless box hat, and described middle layer is the calcium line sandwich layer.
Described line body diameter 9～10mm.
Described seamless box hat is made through hight frequency welding by the low-carbon steel band.
Described seamless box hat thickness is 0.8～1.2mm.
The diameter of described calcium line sandwich layer is 6～8mm.
Described seamless box hat is made by A3 steel or Q195 steel band.
Described middle layer is made of calcium line sandwich layer and the passivation layer that wraps up this calcium line sandwich layer.
The preparation method of above-mentioned seamless calcium iron wire:
(1) calcium metal is purified heating and pour into the metal calcium pump, again metal calcium pump heating extruding is drawn into the calcium metal silk of certain diameter;
(2) getting mild-carbon steel strip, to coat above-mentioned calcium heart yearn palintrope roll forming be pipe;
(3) closely weld together with the faying flange of ratio-frequency welding connection with above-mentioned pipe, and immediately air-cooled or contactless water-cooled is carried out in the joint portion after the welding, used high frequency frequency is 300～450KHz during hight frequency welding, 3 °～5 ° of V-type angular apertures, welding temperature is at 1380～1500 ℃, welding pressure 19.6～29.4 Mpa, welding speed 15～20m/min; Above-mentioned ratio-frequency welding has advantages of outstanding: 1. weldering speed is high, and this is that the welding zone rate of heating is exceedingly fast, and can not produce " skip welding " owing to the electric energy high concentration; 2. the heat affected zone is little, and this is that the workpiece autorefrigeration is strong because weldering speed is high, thus the narrow and difficult generation oxidation in heat affected zone, thus can obtain good tissue and the weld seam of performance, can not produce burning and not weld penetration phenomenon; 3. preweld cleaning can be carried out in surface, place to be welded.
(4) burr at excision solder bond position, again after shaping, stretch processing seamless calcium iron wire.
In described step (3), hight frequency welding is carried out under atmosphere of inert gases.
The utlity model has actively useful effect:
1. the band steel is thick, rigidity is high, can more divide in the deep with lower wire-feeding velocity feeding ladle, slow down or avoid splash, and make calcium, iron etc. can be evenly distributed in ladle, increase substantially the service efficiency of calcium iron wire, the rate of recovery of calcium can improve 2～5 times, and it is better to go to be mingled with effect, and the yield rate of steel is increased to more than 99% by 96%.
2. can reduce feed quantity, save the calcium treatment time, reduce the temperature loss in the molten steel calcium treating processes, and effectively improved molten steel nitrogen pick-up, oxygenation situation in the steel treatment process.
Description of drawings
Fig. 1 is a kind of section structure schematic diagram of seamless calcium iron wire.
Among the figure, 1 is outer, and 2 is the calcium line sandwich layer.
Embodiment
Used raw material etc. if no special instructions, is commercially available among the following embodiment; Method therefor is ordinary method if no special instructions.
1 one kinds of seamless calcium iron wires of embodiment, it is the line body (diameter 10mm) that is formed by outer 1 parcel middle layer, its shell is to make seamless box hat (thick 1mm) by the low-carbon steel band through hight frequency welding, described middle layer is calcium line sandwich layer 2(diameter 8mm), calcium sandwich layer 60g/m, the heavy 240g/m of seamless box hat.
The preparation method of above-mentioned seamless calcium iron wire may further comprise the steps:
(1) calcium metal purification, heating are cast into the metal calcium pump, and metal calcium pump heating extruding are drawn into the calcium metal silk of certain diameter;
(2) getting mild-carbon steel strip, to coat above-mentioned calcium heart yearn palintrope roll forming be pipe;
(3) closely weld together with the faying flange of ratio-frequency welding connection with above-mentioned pipe, and immediately air-cooled or contactless water-cooled is carried out in the joint portion after the welding, used high frequency frequency is 300～450KHz during hight frequency welding, 3 °～5 ° of V-type angular apertures, welding temperature is at 1380～1500 ℃, welding pressure 19.6～29.4 Mpa, welding speed 5～50m/min;
(4) burr at excision solder bond position, again after shaping, stretch processing seamless calcium iron wire.
Certain steel mill tried out the above-mentioned seamless calcium iron wire of already company limited's supply of the many prosperous calcium in Gongyi City in April, 2012, and qualified through the chemical examination composition, wire-feeding velocity is 80-150m/min.
Experimental result shows, uses seamless calcium iron wire greatly to improve ladle calcium recovery rate (average ladle calcium recovery rate 30.19%, average tundish calcium recovery rate 21.89%), reduce loss per ton steel, reduce cost, reduce splash, provide safe Working environment to the site operation personnel, improve steel product quality.
Claims (7)
1. a seamless calcium iron wire is the line body that is formed by skin parcel middle layer, it is characterized in that, described skin is seamless box hat, and described middle layer comprises the calcium line sandwich layer.
2. seamless calcium iron wire according to claim 1 is characterized in that, described line body diameter 9～10mm.
3. seamless calcium iron wire according to claim 1 is characterized in that, described seamless box hat is made through hight frequency welding by the low-carbon steel band.
4. seamless calcium iron wire according to claim 1 is characterized in that, described seamless box hat thickness is 0.8～1.2mm.
5. seamless calcium iron wire according to claim 1 is characterized in that, the diameter of described calcium line sandwich layer is 6～8mm.
6. seamless calcium iron wire according to claim 1 is characterized in that, described seamless box hat is made by A3 steel or Q195 steel band.
7. seamless calcium iron wire according to claim 1 is characterized in that, described middle layer is made of calcium line sandwich layer and the passivation layer that wraps up this calcium line sandwich layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220299639 CN202643742U (en) | 2012-06-26 | 2012-06-26 | Seamless calcium iron wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220299639 CN202643742U (en) | 2012-06-26 | 2012-06-26 | Seamless calcium iron wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202643742U true CN202643742U (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220299639 Expired - Fee Related CN202643742U (en) | 2012-06-26 | 2012-06-26 | Seamless calcium iron wire |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103555884A (en) * | 2013-11-12 | 2014-02-05 | 莱芜钢铁集团有限公司 | Calcium cored wire and method for calcium treatment on molten steel through calcium cored wire |
| WO2015192348A1 (en) * | 2014-06-19 | 2015-12-23 | 巩义市众鑫钙业有限公司 | Welded calcium core wire and application method thereof in molten steel refining |
| CN106636541A (en) * | 2016-09-30 | 2017-05-10 | 秦皇岛首秦金属材料有限公司 | Technology for processing steel liquid calcium by adopting hard high-purity calcium wire |
| CN108715915A (en) * | 2018-06-20 | 2018-10-30 | 山东汉尚新型材料有限公司 | A kind of heat treatment process improving refining core-spun yarn core material recovery rate |
-
2012
- 2012-06-26 CN CN 201220299639 patent/CN202643742U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103555884A (en) * | 2013-11-12 | 2014-02-05 | 莱芜钢铁集团有限公司 | Calcium cored wire and method for calcium treatment on molten steel through calcium cored wire |
| CN103555884B (en) * | 2013-11-12 | 2016-03-23 | 莱芜钢铁集团有限公司 | Calcium core-spun yarn and this calcium core-spun yarn of use carry out the method for Calcium treatment to molten steel |
| WO2015192348A1 (en) * | 2014-06-19 | 2015-12-23 | 巩义市众鑫钙业有限公司 | Welded calcium core wire and application method thereof in molten steel refining |
| CN106170566A (en) * | 2014-06-19 | 2016-11-30 | 巩义市众鑫钙业有限公司 | Welding calcium core-spun yarn and the application process in liquid steel refining thereof |
| CN106170566B (en) * | 2014-06-19 | 2019-03-19 | 巩义市众鑫钙业有限公司 | Weld calcium core-spun yarn and its application method in liquid steel refining |
| CN106636541A (en) * | 2016-09-30 | 2017-05-10 | 秦皇岛首秦金属材料有限公司 | Technology for processing steel liquid calcium by adopting hard high-purity calcium wire |
| CN108715915A (en) * | 2018-06-20 | 2018-10-30 | 山东汉尚新型材料有限公司 | A kind of heat treatment process improving refining core-spun yarn core material recovery rate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170703 Address after: 451261, Zhengzhou, Henan province Gongyi Yongan Street Xin Peng Road Patentee after: Gongyi Heng public Metallurgical Materials Co., Ltd. Address before: 451200 Bai Fukang hospital, 1 Xin Peng Road, Gongyi, Zhengzhou, Henan Patentee before: Gongyi Zhongxin Calcium Industry Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170717 Address after: 451261, Zhengzhou, Henan province Gongyi Yongan Street Xin Peng Road Patentee after: Gongyi Heng public Metallurgical Materials Co., Ltd. Address before: 451200 Bai Fukang hospital, 1 Xin Peng Road, Gongyi, Zhengzhou, Henan Patentee before: Gongyi Zhongxin Calcium Industry Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20180626 |