CN202427933U - Nodulizing cover ladle - Google Patents

Abstract

The utility model discloses a nodulizing cover ladle which comprises a ladle body and a ladle cover matched with the ladle body at the upper part of the ladle body. The nodulizing cover ladle is characterized in that the external ring surface of the contact surfaces between the ladle body and the ladle cover is in a cone structure in clearance fit, and the internal ring surface of the contact surfaces between the ladle body and the ladle cover is a plane without clearance fit. When the nodulizing cover ladle is used in the nodulizing and transporting processes of melted iron, the ladle cover is kept sealed on the ladle body, no metal splashing or photo-thermal radiation is generated, the heat loss is reduced, and the safety and the working condition are improved. By transforming the sealing property and by controlling the depth of a funnel basin of the ladle cover and the diameter of a flow hole, certain pressure is maintained in the ladle, magnesium light and magnesium steam can be prevented from overflowing from the flow hole or a sealing surface, the absorption rate of a nodulizing element is increased, the oxidation loss is reduced, the quality of the melted iron is improved, and the production cost is lowered.

Description

A kind of Spheroidizing Treatment Tundish

Technical field

The utility model relate in a kind of foundry technology process produce that spheroidal graphite cast-iron uses add a cover spheroidising bag, specifically a kind of Spheroidizing Treatment Tundish.

Background technology

The spheroidising bag is that Foundry Works carries out spheroidal graphite cast-iron and is used to accept the ladle that furnace cupola or electric furnace iron liquid carry out spheroidising when producing in the stokehold, is a kind of ladle that possesses spheroidising, storage, transports or water pouring functions.Spheroidising is that magnesium or the alloy material that contains magnesium are added in the reative cell of nodularization bag, covers inovulant or other alloy material it on, pours the technology that high-temperature fusion iron liquid carries out spheroidizing reacion acquisition molten ductile iron.In the course of reaction, because the outburst of the fierceness of magnesium is easy to generate magnesium light and flue gas.Used spheriodization process thereof pours method, hello a silk method, lid bag method, subcontracts method (GF bag), pressure of magnesium adding method, the interior facture of type etc. at present; The absorptivity of lid bag method magnesium is higher; Optical heat radiation is little; Cooling is slow, good operational environment, and the casting circle generally believes that it is reasonable a kind of in the existing several kinds of spheriodization process thereofs covering the bag method.Because of its energy-saving and environmental protection, practicality; General promotion and application have been obtained abroad; (according to the american foundrymen's societry melting committee statistics in 1989,77 Foundry Works have half factory to use the lid bag approximately, and in May, 1997, the delegation that goes to U.S.A. of China Weapon Industry Corporation was that master's Foundry Works investigate to seven families to produce automobile magnesium iron spare in the U.S.; Not only used the lid bag except that a tame spheroidising in seven family belongings but also with subcontracting (GF bag), bag methods are covered in all the other whole employings of six families.) at present domesticly also have some factories to use the more than ten years; Obtained good effect, adhered to using and the good of usefulness still is several families, applied although the positive appealing of expert, scholar on these several years casting circles will be covered bag method spheroidizing process; But the respondent is still few in number; Trace it to its cause, the problem of use habit is wherein arranged, but crucial this body structure of still lid bag still has the perfect place of further needs; To the sealing that designs and produces clad particularly of lid bag, go up and down and the mode that picks and places more loaded down with trivial details; Open to hang to hang with the nodularization bag like clad and separate, this has increased operational inconvenience undoubtedly and has prolonged the nodularization cycle, has influenced to cover the result of use of wrapping and apply.

Summary of the invention

It is a kind of simple in structure that the purpose of the utility model is to provide, and clad and inclusion good airproof performance, clad and inclusion tapering are located automatically, the spheroidising bag of flexible and convenient operation.

For achieving the above object, the technical scheme that the utility model adopted is following:

A kind of Spheroidizing Treatment Tundish, the clad that cooperates with it that comprises inclusion and be positioned at its top, the outer ring surface in the contact-making surface of inclusion and clad is the cone structure of matched in clearance, the plane that top and bottom cooperate for no gap.

Above-mentioned lid bag, said inclusion and the shiny surface of clad contact-making surface for cooperating; Said inclusion outer is provided with the taper reducing from down to up, and the clad outer is provided with the horn mouth from top to bottom that cooperates with the inclusion outer; Inclusion upper edge tapering and inclusion circumferencial direction are provided with " U " type groove, are filled with refractory material in " U " type groove.

The operation principle and the beneficial effect of the utility model show:

Inclusion and the shiny surface of clad contact-making surface for cooperating, good sealing effect when both close up, Spheroidizing Treatment Tundish is in the nodularization process; Make through the sealing transformation with to the control of the clad funnel basin degree of depth and discharge orifice diameter and to obtain certain pressure in the bag; Prevent that magnesium light, magnesium vapor from overflowing from discharge orifice and sealing surface, improved the absorptivity of nodularization element, reduced oxidization burning loss; Improve iron liquid quality, reduced production cost.Iron liquid is in transportation, and clad keeps sealing on inclusion, and no metal splashes and optical heat radiation, has reduced heat loss, has improved security, has improved working condition.

Because adopt the tapering location, directive wheel and slideway are directed, the clad polarization is good, good sealing effect.All adopt the resistance to deformation design, tapering " U " type groove is established in the inclusion upper edge, tamps refractory material in the groove, and thermal deformation resistant and ablation ability are strong, keeps sealing effective.

Description of drawings

Fig. 1 is a kind of self-align sealing nodularization lid pack arrangement sketch map of the utility model;

Fig. 2 is the utility model clad and signal of inclusion sealing state and the local amplification view of sealing surface;

Fig. 3 is the utility model clad discharge orifice and inclusion bag content cavity cross-sectional schematic;

Fig. 4 feeds in raw material, skims for the utility model spheroidising is forward and backward and pours into a mould the preceding view of iron liquid;

Fig. 5 accepts iron liquid for the utility model and carries out spheroidising and transhipment view;

Among the figure, 1, inclusion; 2, suspension rod; 3, directive wheel; 4, clad; 5, chaining; 6, equalizer bar; 7, crossbeam; 8, sliding hanger rod; 9, needle beam; 10, suspension ring; 11, limited block; 12, safety card; 13, reductor; 19, bag axle; 21, light thermal-insulation clad.

The specific embodiment

Come the invention is described in detail with the specific embodiment below:

Form by inclusion 1 and clad 4 and subsidiary body thereof like Fig. 1, the utility model shown in 3.

Inclusion 1 forms the bag content cavity by warding off refractory material in the steel shell, builds the spheroidizing reacion chamber in the bag content cavity, and the opposite is buffering or pretreatment chamber.The outside of inclusion 1 is provided with two bag axles 19 and connects two suspension rods 2 and reductor 13.Suspension rod 2 is formed door frame with crossbeam 7, and door frame to wrapping axle 19 transmission of drive force, makes the wrapped axle rotation of unsettled inclusion through reductor 13 when the lifting state, and completion is fed in raw material and toppled over the operation of iron liquid.

Like Fig. 1, shown in 2, tapering bag mouth is adopted in inclusion 1 upper edge, and clad 4 lower edges are the conical horn mouth, adds that clad 4 establishes on two suspension rods 2 that two directive wheels 3 are pasting inclusion with clad landing about in the of 4, and clad 4 is easy to centering and drops on the inclusion 1.Clad and inclusion sealing surface are machined surface, all adopt the resistance to deformation design, and tapering " U " type groove is established in the inclusion upper edge, tamps refractory material in the groove, and thermal deformation resistant and ablation ability are strong, keep sealing effective.

As shown in Figure 4, inclusion hangs over materials such as carrying out adding before the spheroidising nodulizer on the rane trolley suspension hook or spheroidising finishes to take off slag operation or iron liquid status sketch map is toppled in preparation for clad leaves.Suspension ring 10 hang with needle beam 9, sliding hanger rod 8, equalizer bar 6 Compositional balances, and the sliding hanger rod 8 of balance crane moves up and down in the slideway that crossbeam 7 and limited block 11 are formed, and two chainings 5 on the clad 4 are hung on the equalizer bar 6; The rane trolley suspension hook hangs in the suspension ring 10; Make equalizer bar 6 rise to apical position and be adjacent to crossbeam 7, clad separates with inclusion, exposes the operating space; This spatial altitude does not influence the inclusion rotation and topples over the operation of iron liquid, and balance crane is through door frame lifting inclusion.When using rane trolley, suspension ring 10 hang on the rane trolley suspension hook, do not add light thermal-insulation clad 21 when feeding in raw material and skimming operation, can cover light thermal-insulation clad 21 when toppling over the operation of iron liquid, reduce temperature drop and heat radiation.

Reinforced operation: two chainings 5 on the clad 4 are hung on the equalizer bar 6, and the rane trolley suspension hook hooks suspension ring 10 and rises, and balance crane drive clad rises to equalizer bar 6 together and contacts with crossbeam 7; Clad separates with inclusion; Expose reinforced operating space, continuing to rise makes inclusion built on stilts or workbench, drive speed reducer 13; Make inclusion 1 forward convenient reinforced angle to one inclination of spheroidizing reacion chamber; Nodulizer is dropped into the indoor tamping of spheroidizing reacion, cover inovulant or stalloy on it, in dykes and dams opposite buffering or pretreatment chamber, dose pretreating agent in the time of need carrying out pretreating process.Reinforced finishing, drive speed reducer 13 makes inclusion 1 be turned back to the upright position, is placed into ground or workbench; Lean on dead-weight balanced hanging to drop to clad with clad and contact with the inclusion sealing surface; Balance crane continues to drop to and can take off chaining 5, buckles well safety card 12, the lifting balance crane; Drive inclusion built on stilts or workbench such as Fig. 5 state and tap a blast furnace, accomplish reinforced operation to the location pending that taps a blast furnace.

As shown in Figure 5, for hanging at sealing state, the inclusion clad carries out nodularization, transfer operation sketch map on the rane trolley suspension hook.When using rane trolley, suspension ring 10 hang on the rane trolley suspension hook, nodularization, transport, pour into suspension ring and can hang over all the time on the rane trolley suspension hook, and security is higher.Use the fork truck spheroidising, two pallet fork forks of fork truck are below equalizer bar 6; The transhipment of use fork truck, needle beam 9 drops on the crossbeam 7, and two pallet fork forks of fork truck are below crossbeam 7, and it is Transshipment Permitted that door frame drives inclusion rising built on stilts certain distance.

Spheroidising: the Spheroidizing Treatment Tundish that adds honest material is preferably in the nodularization of tapping a blast furnace in 2 minutes.Package location is covered in adjustment; Make the funnel basin just in time facing to the iron flow; Iron liquid gets into the funnel basin, pours buffering or pretreatment chamber in the bag through the basin bottom part discharge orifice again, and the size of iron flow should be able to guarantee that iron liquid is kept certain height in the funnel basin seal discharge orifice fully and don't overflow the funnel basin.This depends on the size of discharge orifice diameter, can use computing formula: D=(2.34～2.52)

according to the casting engineering that torricelli theorem is released and confirm the discharge orifice diameter.In the formula: D-discharge orifice diameter (cm); A W-processing iron liquid weight! ㎏); T-iron liquid is through flowing hole time (s); Iron liquid height (cm) in h-funnel basin.D value by this formula calculates can be verified and revise in practice, to reach optimum efficiency.

Tap a blast furnace for furnace cupola, relatively stable because of tapping hole, can adjust the size of discharge orifice diameter according to practical experience.Tap a blast furnace for electric furnace; The speed of tapping a blast furnace is controlled easily, can easily make the speed of tapping a blast furnace and funnel basin discharge orifice go into iron speed and be complementary, and the best speed of tapping a blast furnace is that the interior liquid level of funnel basin is kept certain height; The end of tapping a blast furnace, the spheroidizing reacion time equals or lags behind iron liquid slightly through the flowing hole time.

Take off slag operation: spheroidizing reacion finishes, the whereabouts crane hook, and the balance crane that hangs on the suspension hook descends, and equalizer bar 6 drops on the clad 4, and chaining 5 is hung on the equalizer bar 6, and the suspension hook that hoists is sling clad, takes off slag operation.When skimming, clad is sling with equalizer bar simultaneously, and exposes the operating space between the inclusion, promptly skims covering under the situation, has reduced heat radiation, has improved environment and operating personnel's working condition.

The transhipment pouring operation: ends of skimming, can be directly Spheroidizing Treatment Tundish be hung the stokehold bag and cheat and connect the iron liquid level to pouring ladle and put, open safety card 12, drive speed reducer 13 is with iron liquid injection pouring ladle.After iron liquid all empties, get back to the stokehold feed location and feed in raw material, accomplish an operation cycle.

If pouring ladle connect the iron liquid level put with spheroidising not in same striding, then will cover bag and winch on the transport carriage or be placed on the ground with the fork truck transhipment, clad 4 fell and covered on inclusion 1 this moment; Arrival connects the iron liquid level and puts; To cover bag again and sling, light thermal-insulation clad 21 will be covered on inclusion 1, open safety card 12 like Fig. 4 state; Drive speed reducer 13 is injected pouring ladle with iron liquid.

Cast finishes, and spheroidising such as blanking time are longer, and clad and inclusion are placed at sealing state, and the bag content cavity still can keep higher temperature.Through test, 30 minutes at interval, temperature still was kermesinus from dropping to more than 1000 ℃ about 800 ℃ in the bag in the bag, can not need to scald again bag, directly used.

In spheroidising of iron liquid and transportation, clad keeps sealing on inclusion, and no metal splashes and optical heat radiation, has reduced heat loss, has improved security, has improved working condition.Make through the sealing transformation with to the control of the clad funnel basin degree of depth and discharge orifice diameter and to obtain certain pressure in the bag; Prevent that magnesium light, magnesium vapor from overflowing from discharge orifice and sealing surface, improved the absorptivity of nodularization element, reduced oxidization burning loss; Improve iron liquid quality, reduced production cost.

Claims (5)

1. Spheroidizing Treatment Tundish, the clad that cooperates with it that comprises inclusion and be positioned at its top is characterized in that: the outer ring surface in the contact-making surface of inclusion and clad is the cone structure of matched in clearance, the plane that top and bottom cooperate for no gap.

2. lid bag according to claim 1 is characterized in that: the outer shroud contact-making surface of said inclusion and clad is conical surface location.

3. lid bag according to claim 1 is characterized in that: said inclusion and the shiny surface of clad contact-making surface for cooperating.

4. lid bag according to claim 1 is characterized in that: said inclusion outer is provided with the taper reducing from down to up, and the clad outer is provided with the horn mouth from top to bottom that cooperates with the inclusion outer.

5. lid bag according to claim 1 is characterized in that: inclusion upper edge tapering and inclusion circumferencial direction are provided with " U " type groove, are filled with refractory material in " U " type groove.

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