CN202943219U - Die of excellent static ingot with microdefect and high utilization rate - Google Patents
Die of excellent static ingot with microdefect and high utilization rate Download PDFInfo
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- CN202943219U CN202943219U CN 201220677824 CN201220677824U CN202943219U CN 202943219 U CN202943219 U CN 202943219U CN 201220677824 CN201220677824 CN 201220677824 CN 201220677824 U CN201220677824 U CN 201220677824U CN 202943219 U CN202943219 U CN 202943219U
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Abstract
The utility model relates to the field of preparation of a static ingot, and particularly relates to a die of an excellent static ingot with a microdefect and high utilization rate applied to preparation of carbon steel, alloy steel and nonferrous metals under vacuum and non-vacuum conditions. The die has inhibition effects on the defects such as loosing of sinkholes inside the steel ingot, segregation, deposit-awl and the like. The steel ingot and a riser die are in taper structures which are large in lower parts and small in upper parts; the die comprises a steel ingot base plate, a feed trumpet base plate, an ingot body, a dead head, a feed trumpet upper die, a feed trumpet, a cross gate, a steel ingot die and a riser die; the feed trumpet base plate and the steel ingot die are arranged on the steel ingot base plate; the feed trumpet upper die is arranged at the top of the feed trumpet base plate; the feed trumpet is arranged inside the feed trumpet upper die and the feed trumpet base plate; the bottom of the feed trumpet is communicated with an inner cavity of the steel ingot through the cross gate arranged in the steel ingot base plate, and more than two inner gates on the cross gate; and the riser die is arranged at the top of the steel ingot die. The problem of loose defect of the sinkhole inside the steel ingot is solved; the size of the dead head is reduced; and the utilization rate and the production efficiency can be improved.
Description
Technical field
The utility model relates to the preparation field of static ingot, a kind of mould of microdefect high usage high-quality static ingot specifically, be applied to the preparation of carbon steel, steel alloy and non-ferrous metal under vacuum and non-vacuum condition, the defectives such as, segregation loose to the shrinkage cavity of the steel ingot inside of various materials, deposition cone all have inhibitory action.
Background technology
In recent years, along with China's power industry, the fast development of nuclear industry and petro chemical industry, increasing to the demand of large forgings, also the quality requirements to large forgings is more and more higher simultaneously.Large forgings is the basis of the key areas relevant equipments such as electricity power, communications and transportation and metallurgical machinery, is the important symbol of weighing national industrial level.State Council clearly will promote the large forgings manufacturing technology level as the emphasis of country's " equipment manufacture adjustment development planning " in 2009.Steel ingot and strand are the products in advance of large forgings, and its quality is particularly important to improving the large forgings quality, and the quality of steel ingot or blank directly affects the quality of forging.The shrinkage cavity of steel ingot inside is loose, the inherent quality of the defective effect steel ingots such as component segregation and field trash.At present, the steel ingot that industrial quarters adopts usually generally is little ratio of height to diameter design or large steel ingot Feeder Design, even 100-300mm is fallen in rising head end and the tail cone end-grain cutting of steel ingot, causes the utilization rate of steel ingot low.Wasted a large amount of energy, material and manpower and materials, even if like this, the qualification rate of forging is also lower, has restricted the development of high-quality forging.
Because the process of setting of large-scale steel ingot is very very long, for example hundred tonnes of steel ingots need thirties hours, cause low melting point in molten metal, low-density element or field trash in the solidification front enrichment, simultaneously due to the impact of thermosolutal convection etc., make steel ingot zones of different uneven chemical components, cause gross segregation and microsegregation.The Design of Dies of steel ingot is distributed with conclusive impact to the temperature field of steel ingot, directly affects the distribution of the shrinkage cavity rarefaction defect of steel ingot inside.Therefore, optimize Design of Dies, eliminate steel ingot internal shrinkage rarefaction defect, suppress ingotism, the utilization rate that improves steel ingot is present industrial quarters problem in the urgent need to address.
The utility model content
The purpose of this utility model is to provide a kind of mould of microdefect high usage high-quality static ingot, adopt the utility model correlation technique, not only can effectively solve steel ingot internal shrinkage rarefaction defect problem, and reduced the steel ingot Riser Dimensions, greatly improved utilization rate and the production efficiency of steel ingot.
The technical solution of the utility model is:
in the present invention, the mould of microdefect high usage high-quality static ingot comprises: the steel ingot chassis, the feed trumpet chassis, the ingot body, rising head, the feed trumpet patrix, feed trumpet, cross gate, ingot mould, the rising head mould, feed trumpet chassis and ingot mould are set on the steel ingot chassis, top, feed trumpet chassis arranges the feed trumpet patrix, feed trumpet is installed in feed trumpet patrix and feed trumpet chassis, feed trumpet bottom communicates with the ingot mould inner chamber by the cross gate that arranges in the steel ingot chassis and two above ingates on cross gate, the top of ingot mould arranges the rising head mould, the inner chamber of ingot mould is used to form the ingot body, the inner chamber of rising head mould is used to form rising head.
in the present invention, the mould of microdefect high usage high-quality static ingot comprises: the steel ingot chassis, the feed trumpet chassis, the ingot body, rising head, the feed trumpet patrix, feed trumpet, cross gate, ingot mould, the rising head mould, steel ingot tail cone mould, feed trumpet chassis and steel ingot tail cone mould are set on the steel ingot chassis, top, feed trumpet chassis arranges the feed trumpet patrix, feed trumpet is installed in feed trumpet patrix and feed trumpet chassis, feed trumpet bottom communicates by the inversed taper platform shape hole at the cross gate that arranges in the steel ingot chassis and the ingate on cross gate and steel ingot tail cone mould center, steel ingot tail cone mould top arranges ingot mould, the top of ingot mould arranges the rising head mould, the inner chamber of ingot mould is used to form the ingot body, the inner chamber of rising head mould is used to form rising head, the inversed taper platform shape hole formation steel ingot tail cone at steel ingot tail cone mould center, ingot body and the rising head mould of steel ingot are up-small and down-big structure.
The mould of described microdefect high usage high-quality static ingot, the inboard of rising head mould adopt split to hang warming plate, and the inboard of warming plate is mutually neat with the outer surface that ingot is in steel ingot; It is inboard that the warming plate edge is hung on the rising head mould, and the bottom of warming plate contacts with the top of steel ingot ingot body, and perhaps the bottom of warming plate is higher than the top of ingot body steel ingot.
The mould of described microdefect high usage high-quality static ingot, the thickness of warming plate is 30-80mm, is highly 300-600mm, warming plate carries out seamless integrated design according to Riser Dimensions, is provided with one layer of heat preservation plate support outside warming plate.
The mould of described microdefect high usage high-quality static ingot, steel ingot and rising head mould are up-small and down-big pyramidal structure, and the ratio of height to diameter of steel ingot is 1.5-5.
The mould of described microdefect high usage high-quality static ingot, steel ingot back draught are between 2%-5%, and the tapering of rising head is 1-9%, form steel ingot and rising head without the integrated design structure of transition.
The mould of described microdefect high usage high-quality static ingot, steel ingot whitewash the anti-mould coating material layer of high temperature more than 1600 ℃, and the mould coating material layer thickness is 0.3-0.5mm.The utlity model has following beneficial effect:
1. the utility model by adopting up-small and down-big Design of Dies, is effectively controlled the rising head proportion simultaneously, makes the steel ingot utilization rate up to 75-80%.Therefore, this steel ingot die design can significantly improve the steel ingot utilization rate.
2. after the utility model ingot steel casting, use vibrating device to carry out microcell in the steel ingot rising head and trigger the forming core operation, effective crystal grain thinning alleviates and eliminates the loose segregation problem that reaches of shrinkage cavity of steel ingot.Implement to adopt rising head plasma submerged arc heating technique after the vibration microcell triggers the forming core operation at rising head, improve the riser metal liquid temp, strengthen the insulating power of rising head, utilize the steel ingot directional solidification, can effectively solve the loose problem of shrinkage cavity that the steel ingot middle and upper part is divided.In addition, steel ingot also adopts the high temperature demoulding, and steel ingot after the demoulding also is incubated, and reduces the thermal stress at steel ingot center, utilizes in During Ingot Solidification the high temperature shell to shrink and effectively alleviates the loose generation of central pipe.Can alleviate or eliminate inner shrinkage cavity rarefaction defect and segregation problem by above technology, significantly improve the steel ingot internal soundness.The method actual operation is stronger, is a kind of innovative approach, and steel ingot, continuous casting billet or the hollow ingot that ratio of height to diameter is large, the rising head proportion is little acquired a special sense.
3. the utility model is applicable to the preparation of all tonnage steel ingots, continuous casting billet or hollow ingot, and is especially effective to the steel ingot that ratio of height to diameter is large, the rising head proportion is little.The utility model uses scope wide, significantly improves the internal soundness of steel ingot.
in a word, adopt up-small and down-big design by the novel steel ingot in the utility model, adopt vibrating device to carry out microcell and trigger forming core crystal grain thinning technology, adopt the heating of plasma submerged arc to carry out heating technique to rising head, steel ingot high temperature demoulding insulation reaches radially Feeding, after adopting insulation material to the demoulding, steel ingot is incubated, reduce the thermal stress at steel ingot center, adopt steel ingot to realize alleviating or eliminated the loose purpose that reaches the defectives such as A segregation of shrinkage cavity in steel ingot from feeding mechanism, be applicable to carbon steel under vacuum and non-vacuum condition, the preparation of steel alloy and non-ferrous metal, solved ratio of height to diameter large, the steel ingot heart section quality problems that the rising head proportion is little, effectively improved the utilization rate of steel ingot.
Description of drawings
Fig. 1 (a)-(b) is the mould schematic diagram of the utility model static ingot.Wherein, Fig. 1 (a) is the square ingot mould; Fig. 1 (b) is the round ingot mould.
In figure, 1 steel ingot chassis; 2 feed trumpet chassis; 3 ingot bodies; 4 rising heads; 5 feed trumpet patrixes; 6 feed trumpets; 7 cross gates; 8 ingot moulds; 9 rising head moulds; 10 steel ingot tail cone moulds; 11 inversed taper platform shape holes; 12 warming plates.
The specific embodiment
Below in conjunction with drawings and Examples in detail the utility model is described in detail.
The preparation method of the utility model microdefect high usage high-quality static ingot, adopt up-small and down-big Design of Dies, adopt vibrating device to carry out microcell and trigger the forming core crystal grain thinning, adopt the heating of plasma submerged arc that rising head is heated, adopt the high temperature releasing process, after adopting insulation material to the demoulding, steel ingot is incubated, and reduces the thermal stress at steel ingot center, adopts steel ingot to eliminate the shrinkage cavity rarefaction defect of steel ingot inside from feeding mechanism; Wherein,
(1) mould design
Steel ingot and rising head mould are up-small and down-big pyramidal structure; Steel ingot whitewashes the anti-conventional mould coating material of high temperature more than 1600 ℃, and the ratio of height to diameter of steel ingot is 1.5-5, and rising head is highly 150-250mm after shrinking, and the steel ingot utilization rate is 75-80%.
In the utility model, the ratio of height to diameter of round ingot is average diameter (that is: (top diameter+base diameter)/2) ratio of height and the steel ingot of steel ingot, and the ratio of height to diameter of square ingot is the height of steel ingot and the average thickness of steel ingot (that is: (narrow limit, ingot body top thickness+narrow base face thickness)/2) ratio.
as shown in Fig. 1 (a), the mould of the utility model static ingot comprises: steel ingot chassis 1, feed trumpet chassis 2, ingot body 3, rising head 4, feed trumpet patrix 5, feed trumpet 6, cross gate 7, ingot mould 8, rising head mould 9 etc., feed trumpet chassis 2 and ingot mould 8 are set on steel ingot chassis 1, 2 tops, feed trumpet chassis arrange feed trumpet patrix 5, feed trumpet 6 is installed in feed trumpet patrix 5 and feed trumpet chassis 2, feed trumpet 6 bottoms communicate with ingot mould 8 inner chambers by the cross gate 7 that arranges in steel ingot chassis 1 and two above ingates on cross gate 7, the top of ingot mould 8 arranges rising head mould 9, the inner chamber of ingot mould 8 is used to form ingot body 3, the inner chamber of rising head mould 9 is used to form rising head.
as shown in Fig. 1 (b), the mould of the utility model static ingot comprises: steel ingot chassis 1, feed trumpet chassis 2, ingot body 3, rising head 4, feed trumpet patrix 5, feed trumpet 6, cross gate 7, ingot mould 8, rising head mould 9, steel ingot tail cone mould 10 etc., feed trumpet chassis 2 and steel ingot tail cone mould 10 are set on steel ingot chassis 1, 2 tops, feed trumpet chassis arrange feed trumpet patrix 5, feed trumpet 6 is installed in feed trumpet patrix 5 and feed trumpet chassis 2, feed trumpet 6 bottoms communicate by the inversed taper platform shape hole 11 at the cross gate 7 that arranges in steel ingot chassis 1 and the ingate on cross gate 7 and steel ingot tail cone mould 10 centers, steel ingot tail cone mould 10 tops arrange ingot mould 8, the top of ingot mould 8 arranges rising head mould 9, the inner chamber of ingot mould 8 is used to form ingot body 3, the inner chamber of rising head mould 9 is used to form rising head, the inversed taper platform shape hole 11 at steel ingot tail cone mould 10 centers forms the steel ingot tail cones, ingot body 3 and the rising head mould 9 of steel ingot are up-small and down-big structure.
In the utility model, the inboard of rising head mould 9 adopts split to hang warming plate 12, and the inboard of warming plate 12 is mutually neat with the outer surface that ingot is in steel ingot.Warming plate 12 edge is hung on rising head mould 9 inboards, and the bottom of warming plate 12 contacts with the top of steel ingot ingot body, and perhaps the bottom of warming plate 12 is higher than the top of steel ingot ingot body.
(2) microcell triggers the forming core technology
After ingot steel casting, use vibrating device to carry out microcell in the steel ingot rising head and trigger the forming core operation, utilize refractory material that molten metal is vibrated, increase the Enhancing Nucleation Density of molten metal.
(3) rising head plasma submerged arc heating technique
After rising head is implemented the operation of vibration microcell triggering forming core, adopt rising head plasma submerged arc heating technique, improve the riser metal liquid temp, strengthen the insulating power of rising head, the feeding of solidifying that is conducive to improve molten metal, the minimizing Riser Dimensions is increased operation rate.
(4) steel ingot high temperature demoulding insulation and radially Feeding
The demoulding of steel ingot high temperature, adopt insulation material to the demoulding after steel ingot be incubated, reduce the thermal stress at steel ingot center; Utilize high temperature shell contraction in During Ingot Solidification, alleviate or eliminate central pipe and loosen.It is 60-150mm that the demoulding needs shell thickness, and steel ingot shell temperature is 900-1200 ℃.In follow-up process of setting, need insulation, improve the shell contractility.
In described step 1), for solving the loose problem of this type of steel ingot central pipe, steel ingot also has following technical characterstic in mould design except possessing above design feature: rising head adopts split to hang the warming plate method, and its warming plate is inboard mutually neat with the steel ingot outer surface, the thickness of warming plate is 30-80mm, be highly 300-450mm, warming plate should carry out seamless integrated design according to Riser Dimensions, has support outside warming plate, after guaranteeing the high temperature demoulding, the warming plate after efflorescence does not come off.The steel ingot back draught is between 2%-5%, and the tapering of rising head is generally 1-9%.By shown in Figure 1, steel ingot Feeder Design not only volume is little, and has realized that steel ingot and rising head without transition integrated design, have improved the utilization rate of rising head.In addition, steel ingot whitewashes the anti-conventional mould coating material of high temperature more than 1600 ℃, and the thickness of coating is 0.3-0.5mm.
Described step 2) in, the vibration frequency of vibrating device is 2-60Hz, and amplitude is 5-100mm; Oscillation device connects refractory material, and refractory material adopts alumina firebrick, and its refractoriness is more than 1600 ℃, and refractory material need be baked to more than 600 ℃ before use; In oscillatory process, metal bath surface carries out argon shield, prevents the molten metal oxidation; Vibrating device is put into the 1/3-1/2 place that the position is positioned at rising head diameter or the length of side; The refractory material that is connected with oscillation device immerses in molten metal, in oscillatory process, the degree of depth of refractory material in molten metal is 2-100mm, and the size that immerses refractory material in molten metal accounts for the 1/3-1/10 of whole refractory material, and the cross-sectional area of refractory material is 50-150cm
2Time of vibration is, 5-15 ton steel ingot time of vibration is 10-15min, and 15-30 ton steel ingot time of vibration is 15-20min, and 30-80 ton time of vibration is 20-35min.
In the utility model, oscillation device can be referring to the Chinese utility model patent application: a kind of gas oscillation device, application number: 201120262332.9.
In described step 3), adopt plasma submerged arc heating gun, carry out the steel ingot riser heating.First carry out the starting the arc of plasma submerged arc heating gun, preheating, heating immediately after ingot steel casting is completed.The argon gas intake is 10～15L/min, and pressure is 0.1～0.25MPa.During the starting the arc, voltage is 50～120V, and during steady operation, voltage is 30～100V.Plasma submerged arc heating gun is immersed in slag, molten metal is heated immersion depth 10～100mm.Utilize the inside and outside liquid level of argon pressure balance plasma submerged arc heating gun, when insertion depth was identical, when argon pressure was high, inside and outside liquid level was poor large, and when argon pressure hanged down, inside and outside liquid level was poor little.Keep enough large argon pressure, make inner liquid level lifting height be no more than 40mm.Heating and temperature control more than the material liquidus curve 30～100 ℃, heat time heating time 10～30min, 2 of can adopt or 2 above plasma submerged arc heating guns heat simultaneously.When adopting the heating of two plasma submerged arc heating guns, plasma submerged arc heating gun symmetry is put, and puts respectively on radius 1/2 position of rising head; When adopting the heating of three plasma submerged arc heating guns, plasma submerged arc heating gun is put by equilateral triangle, is placed on equally to emit on port radius 1/2 position; All adopt two above plasma submerged arc heating guns heating for the rising head diameter greater than the steel ingot of 1000mm, plasma submerged arc heating gun is placed on equally and emits on port radius 1/2 position; In operation, adopt logical argon gas simultaneously, the starting the arc simultaneously, the mode that immerses simultaneously molten metal is carried out.
In the utility model, rising head plasma submerged arc heating technique can be referring to Chinese invention patent application: a kind of 5 tons of plasma submerged arc heating means to 600 tons of steel ingot rising heads, application number: 201210322358.7.Plasma submerged arc heating gun can be referring to Chinese invention patent application: a kind of 5 tons of plasma submerged arc heaters to 600 tons of steel ingot rising heads, application number: 201210319706.5.
In described step 4), control steel ingot outer surface cooling condition, the temperature of steel ingot outer surface is maintained between 200 ~ 400 ℃ of subsolidus, steel ingot outer surface solidification layer is in the plastically deforming area of low resistance of deformation.Adopt the insulation material such as asbestos or stay-warm case that the steel ingot outer surface is incubated, reduce the heat transfer intensity in strand outer surface and the external world, utilizing the steel ingot core to return heat raises the steel ingot hull-skin temperature, reduce the steel ingot radial symmetry gradient, make the steel ingot core enter simultaneously mushy zone, the steel ingot core is solidified simultaneously.
Utilize 2.5 tons, 5.5 tons steel ingots of above technology trial production, the pour steel material is 42CrMo, 1540 ℃ of pouring temperatures.In addition, utilize above technology also to carry out 50 ton large-scale square ingot exploitations, utilize computer modeling technique that During Ingot Solidification is simulated, by analog result as can be known, by the heating of plasma submerged arc and the high temperature demoulding, the temperature field in During Ingot Solidification is improved, shrinkage cavity be loosened greatly alleviate.In real process, also implement the vibration microcell at rising head and trigger the forming core operation, and also there is radial contraction in high temperature demoulding steel ingot, steel ingot heart section shrinkage cavity rarefaction defect is further alleviated.
As shown in Fig. 1 (b), producing 2.5 tons of ingot body cross sections as a trial is round ingot, and ratio of height to diameter is 2.5, and the pour steel material is 42CrMo, 1540 ℃ of pouring temperatures.After cast, rising head to be implemented the vibration microcell trigger the forming core operation, time of vibration is 8min, after the rising head vibration, plasma submerged arc heating gun is invaded in molten metal, the steel ingot rising head is heated, heat time heating time about 30min, guarantee that the surperficial molten steel temperature of rising head exceeds 10-20 ℃ than the liquidus curve of this steel grade, the demoulding when steel ingot shell temperature drop to 900 ℃, result of the test show, steel ingot heart section is fine and close, do not find more macroscopic shrinkage cavity rarefaction defect, there is no the segregation of A type yet.In addition, in ingot butt negative segregation zone, do not find Large Inclusions.Therefore, trigger the forming core operation by using vibrating device to carry out microcell in the steel ingot rising head, and implement after the vibration microcell triggers the forming core operation at rising head, adopt rising head plasma submerged arc heating technique can make ratio of height to diameter large steel ingot heart section fine and close.
As shown in Fig. 1 (b), producing 5.5 tons of ingot body cross sections as a trial is round ingot, and ratio of height to diameter is 3, and the pour steel material is 42CrMo, 1540 ℃ of pouring temperatures.After cast, rising head to be implemented the vibration microcell trigger the forming core operation, time of vibration is 10min, after the rising head vibration, plasma submerged arc heating gun is invaded in molten metal, the steel ingot rising head is heated, heat time heating time about 50min, guarantee that the surperficial molten steel temperature of rising head exceeds 10-20 ℃ than the liquidus curve of this steel grade, the demoulding when steel ingot shell temperature drop to 1000 ℃, result of the test show, steel ingot heart section is fine and close, do not find more macroscopic shrinkage cavity rarefaction defect, have the segregation of lighter A type.In addition, in ingot butt negative segregation zone, do not find Large Inclusions.Therefore, trigger the forming core operation by using vibrating device to carry out microcell in the steel ingot rising head, and implement after the vibration microcell triggers the forming core operation at rising head, adopt rising head plasma submerged arc heating technique can make ratio of height to diameter large steel ingot heart section fine and close.
As shown in Fig. 1 (a), the die casting square billet (square ingot) of 50 tons of up-small and down-big types of exploitation, ratio of height to diameter is about 4.Its molten steel material is elected Q345 as, and pouring temperature is 1540 ℃.Utilize computer modeling technique that During Ingot Solidification is simulated, for common preparation technology, the thermojunction zone of this steel ingot is in the position, middle and lower part of steel ingot, is easy to bring the serious shrinkage cavity problem of loosening, product rejection after this serious shrinkage cavity rarefaction defect may make and forge.In order to eliminate this class defective, steel ingot has been carried out the high temperature demoulding after solidifying 1 hour, having carried out subsequently insulation processes, and carried out heat treated at rising head, in order to prevent the rising head badly bleeding, rising head has carried out the heating of small-power submerged arc, and heating region mainly concentrates on the rising head centre, by analog result as can be known, the easier consecutive solidification of steel ingot of the preparation of adopting new technology is conducive to eliminate the steel ingot shrinkage cavity loose.And in actual fabrication process, also can implement the vibration microcell at rising head and trigger the forming core operation, and also there is radial contraction in high temperature demoulding steel ingot, and steel ingot heart section shrinkage cavity rarefaction defect is further alleviated.
Claims (7)
1. the mould of a microdefect high usage high-quality static ingot, it is characterized in that, this mould comprises: the steel ingot chassis, the feed trumpet chassis, the ingot body, rising head, the feed trumpet patrix, feed trumpet, cross gate, ingot mould, the rising head mould, feed trumpet chassis and ingot mould are set on the steel ingot chassis, top, feed trumpet chassis arranges the feed trumpet patrix, feed trumpet is installed in feed trumpet patrix and feed trumpet chassis, feed trumpet bottom communicates with the ingot mould inner chamber by the cross gate that arranges in the steel ingot chassis and two above ingates on cross gate, the top of ingot mould arranges the rising head mould, the inner chamber of ingot mould is used to form the ingot body, the inner chamber of rising head mould is used to form rising head.
2. the mould of a microdefect high usage high-quality static ingot, it is characterized in that, this mould comprises: the steel ingot chassis, the feed trumpet chassis, the ingot body, rising head, the feed trumpet patrix, feed trumpet, cross gate, ingot mould, the rising head mould, steel ingot tail cone mould, feed trumpet chassis and steel ingot tail cone mould are set on the steel ingot chassis, top, feed trumpet chassis arranges the feed trumpet patrix, feed trumpet is installed in feed trumpet patrix and feed trumpet chassis, feed trumpet bottom communicates by the inversed taper platform shape hole at the cross gate that arranges in the steel ingot chassis and the ingate on cross gate and steel ingot tail cone mould center, steel ingot tail cone mould top arranges ingot mould, the top of ingot mould arranges the rising head mould, the inner chamber of ingot mould is used to form the ingot body, the inner chamber of rising head mould is used to form rising head, the inversed taper platform shape hole formation steel ingot tail cone at steel ingot tail cone mould center, ingot body and the rising head mould of steel ingot are up-small and down-big structure.
3. according to the mould of the described microdefect high usage of claim 1 or 2 high-quality static ingot, it is characterized in that: the inboard of rising head mould adopts split to hang warming plate, and the inboard of warming plate is mutually neat with the outer surface that ingot is in steel ingot; It is inboard that the warming plate edge is hung on the rising head mould, and the bottom of warming plate contacts with the top of steel ingot ingot body, and perhaps the bottom of warming plate is higher than the top of ingot body steel ingot.
4. according to the mould of microdefect high usage high-quality static ingot claimed in claim 3, it is characterized in that: the thickness of warming plate is 30-80mm, be highly 300-600mm, warming plate carries out seamless integrated design according to Riser Dimensions, is provided with one layer of heat preservation plate support outside warming plate.
5. according to the mould of the described microdefect high usage of claim 1 or 2 high-quality static ingot, it is characterized in that: steel ingot and rising head mould are up-small and down-big pyramidal structure, and the ratio of height to diameter of steel ingot is 1.5-5.
6. according to the mould of microdefect high usage high-quality static ingot claimed in claim 5, it is characterized in that: the steel ingot back draught is between 2%-5%, and the tapering of rising head is 1-9%, forms steel ingot and rising head without the integrated design structure of transition.
7. according to the mould of the described microdefect high usage of claim 1 or 2 high-quality static ingot, it is characterized in that: steel ingot whitewashes the anti-mould coating material layer of high temperature more than 1600 ℃, and the mould coating material layer thickness is 0.3-0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220677824 CN202943219U (en) | 2012-12-07 | 2012-12-07 | Die of excellent static ingot with microdefect and high utilization rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220677824 CN202943219U (en) | 2012-12-07 | 2012-12-07 | Die of excellent static ingot with microdefect and high utilization rate |
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| CN202943219U true CN202943219U (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220677824 Expired - Fee Related CN202943219U (en) | 2012-12-07 | 2012-12-07 | Die of excellent static ingot with microdefect and high utilization rate |
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| CN (1) | CN202943219U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008577A (en) * | 2012-12-07 | 2013-04-03 | 中国科学院金属研究所 | Preparation method and mold for microdefect high-utilization rate high-quality static ingot |
| CN106424576A (en) * | 2016-12-16 | 2017-02-22 | 东北大学 | Spiral-flow type casting device based on bottom casting |
| CN112570698A (en) * | 2020-12-03 | 2021-03-30 | 南京钢铁股份有限公司 | Bottom pouring tank for pouring large high-purity steel ingot |
-
2012
- 2012-12-07 CN CN 201220677824 patent/CN202943219U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008577A (en) * | 2012-12-07 | 2013-04-03 | 中国科学院金属研究所 | Preparation method and mold for microdefect high-utilization rate high-quality static ingot |
| CN103008577B (en) * | 2012-12-07 | 2014-06-11 | 中国科学院金属研究所 | Preparation method and mold for microdefect high-utilization rate high-quality static ingot |
| CN106424576A (en) * | 2016-12-16 | 2017-02-22 | 东北大学 | Spiral-flow type casting device based on bottom casting |
| CN112570698A (en) * | 2020-12-03 | 2021-03-30 | 南京钢铁股份有限公司 | Bottom pouring tank for pouring large high-purity steel ingot |
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