CN102029378A - Method for manufacturing super-thick super-huge single steel ingot - Google Patents
Method for manufacturing super-thick super-huge single steel ingot Download PDFInfo
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Abstract
The invention discloses a method for manufacturing a super-thick super-huge single steel ingot. In the invention, two original blanks are placed on a chassis in parallel, the upper parts of the two original blanks are respectively provided with a dead head, two side baffles are respectively arranged at two sides of the original blanks and the dead heads to form a solidification area to be melted; a consumable electrode is inserted in the solidification area to be melted, steel on the consumable electrode is slowly melted in the solidification area to be melted by using the traditional electroslag remelting technology, the steel is solidified at the same time of being melted till the solidification area to be melted is completely filled with the steel melted from the consumable electrode, and the two original blanks are welded together. Compared with electroslag remelting, the method has low production cost and high production efficiency; the internal quality of the super-thick super-huge single steel ingot manufactured with the method disclosed in the invention is higher than that of a super-huge single steel ingot manufactured with a die casting technology and continuous casting, and especially, the trends of center dispersion and center segregation can be reduced greatly. The method can be used for producing the super-thick super-huge single steel ingots, and the super-thick super-huge single steel ingots which are of a structure having different chemical components along thickness direction and can be used for manufacturing composite steel plates.
Description
Technical field
The present invention relates to the super-thick steel plate production technology, the manufacture method of the thick especially big substance steel ingot of particularly a kind of spy.
Background technology
The thickness of blank and substance have determined the maximum ga(u)ge and the maximum substance of finished product steel plate, and the internal soundness of blank has also directly influenced the inherent quality of finished product steel plate.
Along with the lifting of the comprehensive manufacturing capacity of country, the construction of major projects such as Chinese large-sized steam power plant, large hydropower station, large nuclear power station, large-size spherical tank, marine drilling platform is in the ascendant, and scale is increasing.The construction of the major project that these involve the interests of the state and the people needs a large amount of steel plates.And the required steel plate of this class heavy construction project often thickness is thicker, substance is bigger, and the capacity of the boiler that relates to along with engineering, container, spherical tank, pipeline, marine drilling platform or the like critical component, facility, volume, tonnage is more and more huger, the thickness of used steel plate, substance are also increasing, and thickness surpasses 150mm even 200mm is above, substance surpasses 20t even also increasing sharply greater than the demand of the special thick especially big substance steel plate of 40t.Yet, being subjected to the restriction of sotck thinkness and substance condition, domestic steel mill is difficult to produce at lower cost that this type of spy is thick, the steel plate of especially big substance.
For this type of thick steel plates, adopt the rolling or forging press of heavy plate mill to forge at present and produce, used blank usually by following three kinds of existing explained hereafter, provide.
First kind is continuous casting technique.Adopting the continuous casting billet of this explained hereafter, is most economical at present, modal super-thick steel plate production blank.But make blank with continuous casting billet, exist two problems:
1. so far, the continuous casting billet of domestic the thickest specification only is 300mm, even if domestic indivedual steel mill at present just at the extra-thick plate blank conticaster of design and construction, the thickness specification also has only 400mm.In the world, also have only extremely indivedual conticasters can produce the continuous casting billet of 600mm thickness at present.Consider the restriction of compression ratio, the thickest super-thick steel plate that can only produce 100mm thickness of the continuous casting billet of 300mm thickness, even the continuous casting billet of 400mm thickness, the thickest super-thick steel plate that also can only produce 135mm thickness is difficult to satisfy the above super-thick steel plate demand of 150mm.
2. along with the slab thickness specification increases, strand internal soundness easy variation, particularly center segregation are difficult to eliminate.
Second kind is conventional die castings technology.Adopt the static ingot of this explained hereafter, relatively economical, more commonly used.But the conventional die castings steel ingot is made blank, also exists following problem:
1. die casting must cutting head cutting tail, and lumber recovery is low.
2. so far, the maximum substance of the static ingot of domestic employing conventional die castings technology casting is 35t.Simultaneously, because cutting head cutting tail, lumber recovery is low, causes maximum finished product steel plate substance that domestic employing static ingot produces in fact also below 26t, still can not satisfy the production requirement of the bigger steel plate of some substances.
3. the solidified inside tissue of conventional die castings steel ingot is complicated, casting direction solidified structure changes greatly, and the centre has an intersegmental part mass ratio more satisfactory, and near head and bottom section, then be easy to form shrinkage cavity, loose and large-scale gross segregation, influence the performance and the internal soundness of finished product steel plate.
4. the static ingot surface quality will be inferior to the continuous casting steel ingot usually.
The third is an electroslag remelting process.Adopt the electroslag remelting steel ingot of this explained hereafter, the technology comparative maturity can produce the super especially big substance steel ingot more than 60 tons, and the steel ingot internal soundness is better.But electroslag remelting steel ingot is made blank, also exists following problem: 1.. production cost is higher, and electroslag remelting steel ingot cost per ton is more high than continuous casting steel machine steel ingot, static ingot.2.. production efficiency is lower, and is unfavorable to environmental protection.3.. surface quality also is inferior to the continuous casting steel machine steel ingot.And along with the increase of thickness, the steel ingot internal soundness also has disadvantageous trend.
Except that above-mentioned three kinds of existing, mature technologies, also have a kind of unidirectional solidification steel ingot, form by the casting of unidirectional solidification die casting process.This technology is set forth in the seventies in last century.Abroad, Japan's " iron and steel " 73 (13) discloses this unidirectional solidification die casting process, and Japanese patent laid-open No. sho 62-279050 discloses the patent of " casting method of unidirectional solidification steel ingot and ingot mould ".At home, " manufacture order is to the method for solidifying steel ingot " of China Patent No. 95110197.8 also designed a kind of molten steel directly injects ingot mould from the top by tundish production method.But above unidirectional solidification die casting process still is in the stage of test so far, does not all produce in batches both at home and abroad.
Comprehensively above-mentioned, as to produce special thick, especially big substance steel ingot at present production technology exists following deficiency:
1. continuous casting technique is ripe and economical, but the present maximum of thickness specification has only 600mm, and along with thickness increases, internal soundness has unfavorable trend.
2. the die casting process maturation is also relatively economical, but lumber recovery is lower, and inside and outside quality of maximum substance and steel ingot still do not satisfy the requirement in market.
3. electroslag remelting can be produced the required steel ingot of special thick, especially big substance steel plate, but the production cost height, production efficiency is low.
Summary of the invention
The manufacture method that the purpose of this invention is to provide the thick especially big substance steel ingot of a kind of spy can be produced the required steel ingot of special thick, especially big substance steel plate that continuous casting technique can't be produced.Production cost is lower than electroslag remelting, production efficiency is than electroslag remelting height.Surface quality is than the especially big substance steel ingot height of die casting process and electroslag remelting production, and is suitable with the surface quality of continuous casting billet; Internal soundness is than the especially big substance steel ingot height of die casting process and continuous casting steel machine production, and particularly center evacuation, center segregation tendency can significantly reduce.Can produce along the steel ingot different chemical composition structure, that be used to make clad steel plate is arranged on the thickness direction.
Technical scheme of the present invention is,
The manufacture method of the thick especially big substance steel ingot of spy of the present invention to the effect that utilizes electroslag remelting with two common continuous casting billet melting and solidifications together, produces thickness and substance and all is twice above special thick especially big substance steel ingot than common continuous casting billet.Adopt this method, can also produce along the steel ingot different chemical composition structure, that be used to make clad steel plate is arranged on the thickness direction.
Particularly, the manufacture method of the thick especially big substance steel ingot of a kind of spy of the present invention, two parallel being placed on the chassis of original blank, two original blank tops are respectively equipped with the rising head that one deck is made of refractory material, the both sides of original blank and rising head are provided with two side shields of being made up of refractory material, and original blank, chassis, rising head and side shield surround a solidification zone to be melted; Wait to melt consutrode insertion within the solidification zone, utilizing existing electroslag remelting technique that the steel on the consutrode is melted in waits to melt in the solidification zone, to wait that until the steel that comsumable melt is got off melting solidification zone all fills up, two original blanks will be welded together.
Further, the height of described rising head is greater than the thickness of electroslag remelting molten slag layer.
Described chassis is designed to down spill, makes above-mentionedly to wait to melt after solidification zone all fills up, and the steel that has solidified its bottom is more outstanding than the bottom of original blank.
The material on described chassis is a water-cooled copper plate, or refractory material.If refractory material is adopted on the chassis, then recessed interior shop graphite in chassis or steel plate are as the non-consumable hearth electrode.
The composition of described consutrode can be shown with original blank composition one and obtains the special thick especially big substance steel ingot that composition evenly causes, also can be inconsistent to obtain along the steel ingot that the special thick especially big substance different chemical composition structure, that be used to make clad steel plate is arranged on the thickness direction with the original blank composition.
Consutrode is by conduction clamper and clamping of conductive supporting arm and support, can consume situation and melt pool height carries out the automatic adjustment of upper-lower position according to consutrode; Electricity clamper and conductive supporting arm can be done reciprocating type moving along the pool width direction.
Described consutrode should and original blank between keep spacing.
The ratio of described original blank length and two original blank spacings adopts single consutrode less than under 3 times the situation, and adopts single phase ac/DC circuit, and consutrode is connected with the chassis lead, forms single-phase loop; The ratio of original blank length and two original blank spacings adopts three consutrode broad ways to be arranged in juxtaposition greater than under 8 times the situation, and adopts the three-phase circuit power supply, and three consutrodes are connected with the chassis lead, formation three-phase and four-line loop;
The ratio of described original blank length and blank spacing adopts single consutrode between 3～8 times the time, also can adopt above-mentioned three consutrode broad ways to be arranged in juxtaposition.
Consutrode inserts to be waited to melt among the solidification zone, and electrode tip inserts within the electroslag remelting slag blanket, electric current heats this part slag by slag blanket between consutrode end and the steel molten bath and the heat that produced by its resistance, the slag of high temperature and then with the fusing of the steel of consutrode end, and drop by drop pass above-mentioned high temperature slag blanket in the mode of molten drop, enter in the molten bath; Molten steel in the molten bath progressively solidifies, and the height of solidification layer is progressively raise, and finally arrives more than or equal to the original blank height, and two original blanks are welded together.
Beneficial effect of the present invention
1. can produce thickness relatively economical and can reach that 700mm is above, substance can reach the special thick especially big substance steel ingot more than 60 tons.
2. adopt the special thick especially big substance steel ingot of the present invention's production, its surface quality is better than the especially big substance steel ingot of die casting process and electroslag remelting production, and is suitable with the surface quality of continuous casting billet; Internal soundness is better than the especially big substance steel ingot of die casting process and continuous casting steel machine production, and particularly its center porosity, center segregation tendency can significantly reduce.
3. can produce along the special steel ingot of special thick, the especially big substance that the different chemical composition structure is arranged on the thickness direction.So-called along there being the different chemical composition structure to be meant on the thickness direction: by selecting the chemical composition of different original blank and consutrode, can produce 4 kinds of different composition combinations on thickness direction: 1) upper and lower outer field composition is identical but different with the intermediate layer, is the compound of two kinds of steel grades; 2) outer composition of layer had nothing in common with each other under upward outer, intermediate layer reached, and was the compound of three kinds of steel grades; 3) along the basic uniformity of chemical composition on the thickness direction, be same steel grade.
4) upper and lower outer field composition is different, but one of them is identical with the intermediate layer, is the compound of two kinds of steel grades.
Description of drawings
Fig. 1 is the schematic perspective view of the embodiment of the invention 1.
Fig. 2 is a side sectional view of the present invention.
Fig. 3 is the schematic perspective view of the embodiment of the invention 2.
The specific embodiment
Referring to Fig. 1, Fig. 2, the manufacture method of the thick especially big substance steel ingot of spy of the present invention, with two original blanks, 1 parallel being placed on the chassis 2, the top of two original blanks 1 is respectively equipped with the rising head 3 that one deck is made of refractory material, and the both sides of original blank 1 and rising head 3 are provided with two side shields of being made up of refractory material 4.Original blank 1, chassis 2, rising head 3 and side shield 4 have surrounded one and have rectangularly waited to melt solidification zone 5.The consutrode 6 of one group of chemical composition as required inserts to be waited to melt within the solidification zone 5, utilizing existing electroslag remelting technique that the steel of the special component on the consutrode 6 is melted in lentamente waits to melt in the solidification zone 5, and solidify while melting, the steel that melts until consutrode 6 will be waited to melt solidification zone 5 and all fill up, and two original blanks 1 are welded together.
According to the electroslag remelting principle, electric current heats this part slag by high temperature slag blanket 52 between consutrode 6 ends and the steel molten bath and the heat that produced by its resistance, the slag of high temperature and then with the fusing of the steel of consutrode end, and drop by drop pass above-mentioned high temperature slag blanket 52 in the mode of molten drop, enter in the molten bath 53.Molten steel in the molten bath 53 progressively solidifies, and the height of solidification layer 54 is progressively raise, final arrival more than or equal to original blank 1 height, and two original blanks 1 are welded together.
When being close to or higher than the height of original blank 1 for the height that prevents solidification layer 54, the overflowing of slag blanket 51 and molten bath 53 molten steel, the present invention has designed the rising head 3 that is made of refractory material.The height of rising head 3 should be greater than the thickness of slag blanket 51.
For guaranteeing the quality of solidification layer 54 bottoms, chassis 2 is designed to down spill, makes the bottom of solidification layer 54 more outstanding than the bottom of original blank 1.The material on chassis 2 can be a water-cooled copper plate, also can be refractory material.When adopting refractory material to do the chassis, spread graphite or steel plate in must be on chassis 2 recessed as non-consumable hearth electrode 21.
The composition of consutrode 6 can be consistent with original blank 1 composition, and in such cases, the inside and outside composition of the steel ingot that this method is produced is a uniformity, but substance and thickness are twice above than the original blank of monolithic.
The composition of consutrode 6 also can be inconsistent with original blank 1 composition, and in such cases, the inside and outside different blank of composition of the steel ingot that the inventive method is produced can be used to produce the steel plate that inside and outside layer has the different performance requirement.
Consutrode 6 is by conduction clamper 7 and 8 clampings of conductive supporting arm and support, transmission, the control system of conduction clamper 7 and conductive supporting arm 8 are identical with common electroslag remelting device, can consume situation and melt pool height carries out the automatic adjustment of upper-lower position according to consutrode.In addition, for increasing the uniformity of 6 fusings of broad ways consutrode, process of setting, electric clamper 7 and conductive supporting arm 8 also should possess broad ways and make the shuttle function that slowly moves.
The thickness of blank to be produced approximate between two original blanks apart from and the thickness of original blank 1, that is:
The thickness of distance+2 * original blank 1 between the thickness of blank to be produced=two original blank
Wherein: between two original blanks apart from the spacing that depends on thickness and the consutrode and the original blank of consutrode again.That is:
Distance between the thickness of original blank spacing=consutrode+2 * consutrode and the original blank
For guaranteeing the form in rational molten bath 53, consutrode should and original blank between keep suitable spacing.
Under the smaller situation of original blank 1 length and original blank spacing, can adopt single consutrode 6, and adopt single phase ac/DC circuit.At this moment, consutrode 6 is connected with chassis 2 leads, forms single-phase loop 9.
Under the bigger situation of original blank 1 length and blank space D, can adopt three consutrode broad ways to be arranged in juxtaposition, and adopt the three-phase circuit power supply, see Fig. 3.At this moment, consutrode 6,6 ', 6 " be connected with chassis 2 leads, form three-phase and four-line loop 9.
Embodiment 1
In the present embodiment, steel ingot to be produced is that specification is thick 700mm, wide 2300mm, long 1500mm, the special thick steel ingot that substance is about 18.35 tons for cut deal, the rolling usefulness of wide and heavy plate mill, and steel grade is Q235.Present embodiment adopts device shown in Figure 1, and the Q235 continuous casting material of choosing two thickness and be 250mm, width and be 2300mm, length and be 1500mm is as original blank 1.
For guaranteeing steel ingot internal soundness behind electroslag remelting, a face of this every block continuous casting billet of the preceding reply of production carries out ball blast or abrasion wheel grinding is handled to remove covering slag, iron scale and the oscillation mark of casting billet surface.
After the surface treatment, two original blank continuous casting billet widths are placed on the chassis 2 as the short transverse of steel ingot to be produced is parallel, and make its surface treated one side towards the inside.Chassis 2 materials are refractory material, and its concave part is covered with non-consumable hearth electrode 21, and its material is a graphite.In the present embodiment, for obtaining the special thick steel ingot that thickness is 700mm, spacing is set at 200mm between two original blanks 1.
Build out the rising head 3 of floor height 200mm respectively by laying bricks or stones with refractory brick or unshape refractory on the top of two original blanks 1, the both sides of original blank 1 and rising head 3 are provided with two side shields of being made up of refractory brick or heat-insulating shield 4.Original blank 1, chassis 2, rising head 3 and side shield 4 have surrounded one and have rectangularly waited to melt solidification zone 5.For preventing that liquid molten steel from spilling, it is real that envelope must be filled up with fireproof coating in the slit between original blank 1 and the chassis 2, between original blank 1 and the side shield 4.
As shown in Figure 2, utilize existing electroslag remelting technique, consutrode 6 is by conduction clamper 7 and 8 clampings of conductive supporting arm and support; 9 for connecting the single phase power supply loop of consutrode 6 and the built-in graphite hearth electrode 21 in chassis.Transmission, the control system of conduction clamper 7 and conductive supporting arm 8 are identical with common electroslag remelting device, can consume situation and melt pool height carries out the automatic adjustment of upper-lower position according to consutrode.In addition, for increasing the uniformity of 6 fusings of along continuous straight runs consutrode, process of setting, conduction clamper 7 and conductive supporting arm 8 also should possess along continuous straight runs and make the shuttle function that slowly moves.
The material of consutrode 6 is Q235, and the cutting head cutting tail material in the available for this reason steel plate production process also can directly cut from continuous casting material, but its chemical composition is answered the requirement of accord with Q 235.For making the suitable spacing of maintenance between consutrode 6 and the original blank 1, the thickness of consutrode 6 is chosen to be 100mm in the present embodiment, is 50mm apart from D1 between consutrode 6 and the original blank 1.Make consutrode 6 convenience for cutting continuous casting blank, the width of consutrode 6 may be selected to be the thickness of continuous casting billet, i.e. 250mm in the present embodiment.
Electroslag remelting incipient stage solidification layer 54 and original blank 1 seam for the benefit of can be carried out preheating to original blank 1 together, and preheat temperature is 50～200 ℃.
In the present embodiment, steel ingot to be produced is thick 800mm, wide 2300mm, long 4800mm, substance about 67.12 tons, for the rolling special thick especially big substance steel ingot of wide and heavy plate mill more than 5 meters, steel grade is Q235.For this reason, present embodiment adopts device shown in Figure 1, and the Q235 continuous casting material of choosing two thickness and be 300mm, width and be 2300mm, length and be 4800mm is as original blank 1.
For guaranteeing steel ingot internal soundness behind electroslag remelting, a face of every block of continuous casting billet of the preceding reply of production carries out ball blast or abrasion wheel grinding is handled to remove covering slag, iron scale and the oscillation mark of casting billet surface.
After the surface treatment, two original blank continuous casting billet widths are placed on the chassis 2 as the short transverse of steel ingot to be produced is parallel, and make its surface treated one side towards the inside.Chassis 2 materials are refractory material, and its concave part is covered with non-consumable hearth electrode 21, and its material is a graphite.In the present embodiment, for obtaining the special thick steel ingot that thickness is 800mm, spacing is set at 200mm between two original blanks 1.
Build out the rising head 3 of a floor height 200mm respectively by laying bricks or stones with refractory brick or unshape refractory on the top of two original blanks 1, the both sides of original blank 1 and rising head 3 are provided with two side shields of being made up of refractory brick or heat-insulating shield 4.Original blank 1, chassis 2, rising head 3 and side shield 4 have surrounded one and have rectangularly waited to melt solidification zone 5.For preventing that liquid molten steel from spilling, it is real that envelope can be filled up with fireproof coating in the slit between original blank 1 and the chassis 2, between original blank 1 and the side shield 4.
As shown in Figure 2, utilize existing electroslag remelting technique, consutrode 6,6 ', 6 " respectively by conduction clamper 7,7 ', 7 " and conductive supporting arm 8,8 ', 8 " clamping and support; 9 for connecting consutrode 6,6 ', 6 " with the three-phase and four-line current supply circuit of the built-in graphite hearth electrode 21 in chassis.Conduction clamper 7,7 ', 7 " with conductive supporting arm 8,8 ', 8 " transmission, control system identical with common electroslag remelting device, can consume situation and melt pool height carries out the automatic adjustment of upper-lower position respectively, independently according to consutrode.In addition, be to increase along continuous straight runs consutrode 6,6 ', 6 " uniformity of fusing, process of setting, conduction clamper 7,7 ', 7 " and conductive supporting arm 8,8 ', 8 " also should possess along continuous straight runs and make shuttle slowly mobile function.
Electroslag remelting incipient stage solidification layer 54 and original blank 1 seam for the benefit of can be carried out preheating to original blank 1 together, and preheat temperature is 50～200 ℃.
Embodiment 3
In the present embodiment, steel ingot to be produced is thick 600mm, wide 1500mm, long 2000mm, the about 13.7 tons special thick special steel ingot of substance, steel grade is the compound steel grade of welded structural steel and weathering steel, wherein along thickness direction, in the about 200mm thickness range of upper and lower skin is weathering steel JIS G3114SMA490CW, is welded structural steel JIS G3106SM490C in the about 200mm thickness range in intermediate layer.
Adopt device shown in Figure 3, the continuous casting billet of choosing two thickness and be 200mm, width and be 1500mm, length and be 2000mm, composition and be JIS G3114SMA490CW is as original blank 1.For guaranteeing steel ingot internal soundness behind electroslag remelting, a face of every block of continuous casting billet of the preceding reply of production carries out ball blast or abrasion wheel grinding is handled to remove covering slag, iron scale and the oscillation mark of casting billet surface.
After the surface treatment, two original blank continuous casting billet widths are placed on the chassis 2 as the short transverse of steel ingot to be produced is parallel, and make its surface treated one side towards the inside.Chassis 2 materials are refractory material, and its concave part is covered with non-consumable hearth electrode 21, and its material is a graphite.In the present embodiment, the steel grade in intermediate layer is different with upper and lower outer field steel grade, and to require intermediate layer thickness be 200mm, and therefore spacing is set at 200mm between two original blanks 1.
Build out the rising head 3 of a floor height 200mm respectively by laying bricks or stones with refractory brick or unshape refractory on the top of two original blanks 1, the both sides of original blank 1 and rising head 3 are provided with two side shields of being made up of the refractory brick or the adiabatic utmost point 4.Original blank 1, chassis 2, rising head 3 and side shield 4 have surrounded one and have rectangularly waited to melt solidification zone 5.For preventing that liquid molten steel from spilling, it is real that envelope can be filled up with fireproof coating in the slit between original blank 1 and the chassis 2, between original blank 1 and the side shield 4.
Shown in Figure 2, utilize existing electroslag remelting technique, consutrode 6,6 ', 6 " respectively by conduction clamper 7,7 ', 7 " and conductive supporting arm 8,8 ', 8 " clamping and support; 9 for connecting consutrode 6,6 ', 6 " with the three-phase and four-line current supply circuit of the built-in graphite hearth electrode 21 in chassis.Conduction clamper 7,7 ', 7 " with conductive supporting arm 8,8 ', 8 " transmission, control system identical with common electroslag remelting device, can consume situation and melt pool height carries out the automatic adjustment of upper-lower position respectively, independently according to consutrode.In addition, be to increase along continuous straight runs consutrode 6,6 ', 6 " uniformity of fusing, process of setting, conduction clamper 7,7 ', 7 " and conductive supporting arm 8,8 ', 8 " also should possess along continuous straight runs and make reciprocating type slowly mobile function.
Claims (9)
1. the manufacture method of the thick especially big substance steel ingot of spy, two parallel being placed on the chassis of original blank, two original blank tops are respectively equipped with the rising head that one deck is made of refractory material, the both sides of original blank and rising head are provided with two side shields of being made up of refractory material, and original blank, chassis, rising head and side shield surround a solidification zone to be melted; Wait to melt consutrode insertion within the solidification zone, utilizing existing electroslag remelting technique that the steel on the consutrode is melted in waits to melt in the solidification zone, to wait that until the steel that comsumable melt is got off melting solidification zone all fills up, again two original blanks are welded together, form special thick especially big substance steel ingot.
2. the manufacture method of the thick especially big substance steel ingot of spy as claimed in claim 1 is characterized in that the height of described rising head is greater than the thickness of electroslag remelting molten slag layer.
3. the manufacture method of the thick especially big substance steel ingot of spy as claimed in claim 1 is characterized in that described chassis is designed to down spill, makes above-mentionedly to wait to melt after solidification zone all fills up, and the steel that has solidified its bottom is more outstanding than the bottom of original blank.
4. the manufacture method of the thick especially big substance steel ingot of spy as claimed in claim 1 is characterized in that the material on described chassis is a water-cooled copper plate.
5. the manufacture method of the thick especially big substance steel ingot of spy as claimed in claim 1 is characterized in that, the material on described chassis adopts refractory material, and then recessed interior shop graphite in chassis or steel plate are as the non-consumable hearth electrode.
6. the manufacture method of the thick especially big substance steel ingot of spy as claimed in claim 1 is characterized in that the composition of described consutrode can be consistent with the original blank composition, to obtain the special thick especially big substance steel ingot of composition uniformity; Also can be inconsistent with the original blank composition, to obtain along the steel ingot that the special thick especially big substance different chemical composition structure, that be used to make clad steel plate is arranged on the thickness direction.
7. the manufacture method of the thick especially big substance steel ingot of spy as claimed in claim 1, it is characterized in that, described consutrode is by conduction clamper and clamping of conductive supporting arm and support, can consume situation and melt pool height carries out the automatic adjustment of upper-lower position according to consutrode; Electricity clamper and conductive supporting arm can be done reciprocating type moving along the pool width direction.
8. the manufacture method of the thick especially big substance steel ingot of spy as claimed in claim 1, it is characterized in that, the ratio of described original blank length and two original blank spacings is less than under 3 times the situation, adopt single consutrode, and employing single phase ac/DC circuit, consutrode is connected with the chassis lead, forms single-phase loop; The ratio of original blank length and two original blank spacings adopts three consutrode broad ways to be arranged in juxtaposition greater than under 8 times the situation, and adopts the three-phase circuit power supply, and three consutrodes are connected with the chassis lead, formation three-phase and four-line loop;
9. the manufacture method of the thick especially big substance steel ingot of spy as claimed in claim 1, it is characterized in that, the ratio of described original blank length and blank spacing adopts single consutrode between 3～8 times the time, also can adopt above-mentioned three consutrode broad ways to be arranged in juxtaposition.
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| CN103862163A (en) * | 2014-03-04 | 2014-06-18 | 上海交通大学 | Manufacturing method of aluminum/aluminum alloy composite plate |
| CN104259357A (en) * | 2014-10-16 | 2015-01-07 | 二重集团（德阳）重型装备股份有限公司 | Large-sized steel ingot production method |
| CN107774962A (en) * | 2016-08-31 | 2018-03-09 | 沈阳铸造研究所 | A kind of electroslag fusion manufacture method of large-scale curved blade slab |
| CN107876718A (en) * | 2017-11-20 | 2018-04-06 | 辽宁科技大学 | For simulating the experimental provision and experimental method of special heavy plate slow-set |
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| CN101125362A (en) * | 2007-10-11 | 2008-02-20 | 丁家伟 | Casting method for manufacturing layered metal composite material technology and equipment |
| CN101406938A (en) * | 2008-11-25 | 2009-04-15 | 南阳汉冶特钢有限公司 | Ingot mould device for realizing clean steel casting ingot |
| CN101439348A (en) * | 2008-12-29 | 2009-05-27 | 济南钢铁股份有限公司 | Technological process for producing super-thick plate |
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2009
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| CN104259357A (en) * | 2014-10-16 | 2015-01-07 | 二重集团（德阳）重型装备股份有限公司 | Large-sized steel ingot production method |
| CN107774962A (en) * | 2016-08-31 | 2018-03-09 | 沈阳铸造研究所 | A kind of electroslag fusion manufacture method of large-scale curved blade slab |
| CN107774962B (en) * | 2016-08-31 | 2019-09-17 | 沈阳铸造研究所 | A kind of electroslag fusion manufacturing method of large-scale curved blade slab |
| CN107876718A (en) * | 2017-11-20 | 2018-04-06 | 辽宁科技大学 | For simulating the experimental provision and experimental method of special heavy plate slow-set |
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