CN111644578A - Nodular cast iron smelting secondary inoculation funnel - Google Patents
Nodular cast iron smelting secondary inoculation funnel Download PDFInfo
- Publication number
- CN111644578A CN111644578A CN202010591449.5A CN202010591449A CN111644578A CN 111644578 A CN111644578 A CN 111644578A CN 202010591449 A CN202010591449 A CN 202010591449A CN 111644578 A CN111644578 A CN 111644578A
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- China
- Prior art keywords
- inoculant
- movable baffle
- molten iron
- cylinder
- funnel
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- Pending
Links
- 238000011081 inoculation Methods 0.000 title claims abstract description 36
- 229910001141 Ductile iron Inorganic materials 0.000 title claims abstract description 14
- 238000003723 Smelting Methods 0.000 title claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000002054 inoculum Substances 0.000 claims abstract description 49
- 229910052742 iron Inorganic materials 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 9
- 238000005303 weighing Methods 0.000 claims description 6
- 239000011229 interlayer Substances 0.000 claims description 3
- 241001417490 Sillaginidae Species 0.000 claims 1
- 238000000605 extraction Methods 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 claims 1
- 238000005266 casting Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/10—Making spheroidal graphite cast-iron
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention provides a nodular cast iron smelting secondary inoculation funnel, which comprises: the cylinder is fixed above the opening of the sprue box through a bracket, and the outlet part at the lower end of the cylinder is conical; supporting a baffle plate: fixed on the top of the cylinder; a gate plate: the conical cylinder outlet position is arranged at the lower end of the cylinder and is used for controlling the inoculation time and flow; and a conduit: the inoculant is arranged at the output end of the funnel and guides the inoculant flowing out from the outlet at the lower end of the cylinder body. The inoculant flowing out of the guide pipe is guided to ensure that the inoculant flows out and is fully converged and mixed with molten iron flow poured out of a ladle. Since the amount of molten iron in the ladle is known, the molten iron pouring time is determined by controlling the pouring speed thereof. The flowing time of the inoculant is controlled by adjusting the opening size of the gate plate, so that the coincidence of the flowing time of the inoculant and the pouring time of the molten iron of over 80 percent is ensured. And finally, the inoculant flows through the guide pipe to be merged with the molten iron flow.
Description
Technical Field
The invention relates to the technical field of casting, in particular to a nodular cast iron smelting secondary inoculation funnel.
Background
In the process of producing and smelting the ductile iron parts, ferrosilicon composite material (inoculant) is used for carrying out instantaneous secondary inoculation on molten iron, and detailed description is shown in figure 1. In the inoculation process, the inoculation is not uniform and the nodularity is low due to improper operation. The produced casting has unstable quality, and the graphite spherical shape in the metallographic phase is not round and uniform in size, the carbide amount exceeds the standard and the like. The ductile iron material has low mechanical property and even can not meet the standard requirement. And the accident potential can be caused if the device is used.
The conventional secondary inoculation adopts the following main modes: 1. the inoculant is poured into the molten iron flow by a shovel manually, and the inoculant is uneven in adding amount and difficult to operate. 2. Directly throwing the inoculant to the bottom of a sprue box or a ladle and flushing the inoculant with molten iron. The method has poor inoculation effect and non-uniform chemical components. 3. The in-mold inoculation is to place an inoculant in a sand mold pouring channel and perform instantaneous inoculation when molten iron passes through the channel. The method can cause uneven inoculation, the generated slag cannot be discharged, and the casting has more slag holes.
Disclosure of Invention
According to the technical problems provided by the prior art, the secondary inoculation funnel device is low in cost and convenient to install and operate.
The technical means adopted by the invention are as follows:
a nodular cast iron smelting secondary inoculation funnel comprises:
barrel: is fixed above the opening of the sprue box through a bracket, and the outlet part at the lower end is conical,
supporting a baffle plate: the top end of the cylinder body is fixed on the bracket,
a gate plate: a conical barrel outlet arranged at the lower end of the barrel for controlling the inoculation time and flow, an
A conduit: the inoculant is arranged at the output end of the flashboard and guides the inoculant flowing out from the outlet at the lower end of the cylinder;
the inoculant guide of the guide pipe ensures that the inoculant is converged and mixed with the molten iron poured from the ladle on the path when flowing out.
Further, in the above-mentioned case,
the flashboard includes: the two cover plates, the stop block, the movable baffle plate, the supporting block and the adjustable bolt;
a movable baffle is arranged between the two cover plates and can be freely pulled between the two cover plates, and the center lines of the round holes on the two cover plates are superposed with and penetrate through the center line of the tapered cylinder of the cylinder, namely the through hole is matched with the outlet at the lower end of the cylinder;
the movable baffle is not provided with a through hole which is the same as that of the cover plate, so that the inoculant is kept in the funnel before being pulled out;
the top end and the two sides of the pulling direction of the movable baffle in the cover plate interlayer are provided with limit stop blocks for limiting the movable baffle, the side surface of the cover plate is provided with a supporting block, the inner hole of the supporting block is provided with an adjustable bolt in a threaded manner, and once the bolt is fixed in position, the nut can be fastened to lock the adjustable bolt. The direction of the central line of the adjustable bolt is the same as the pulling direction of the movable baffle;
the side of the movable baffle plate, where the supporting block is located, is provided with a protruding portion, the protruding portion can be attached to the adjustable bolt in the pulling process of the movable baffle plate, sliding limiting of the movable baffle plate is achieved, and therefore the size of the opening of the flashboard is determined.
Further, in the above-mentioned case,
the guide pipe is an outlet angle adjustable structure.
A nodular cast iron smelting secondary inoculation mixing system applying the funnel,
the method comprises the following steps: the device comprises a conveying device for injecting an inoculant into a barrel body and a weighing device for measuring the weight of molten iron in a ladle; wherein the delivery amount of the inoculant delivery device is determined according to the weight of the molten iron in the ladle at present measured by the molten iron weighing device.
According to the invention adopting the technical scheme, the funnel device is fixed above the pouring gate box. When the ladle begins to turn over, the movable baffle in the flashboard is pulled to open the through holes on the upper cover plate and the lower cover plate, and the flow and the flowing time of the inoculant can be controlled by the relative position of the movable baffle and the through holes of the cover plates, namely the opening size. The flowing time of the inoculant is required to be coincident with the molten iron flowing time in the ladle (realized by controlling the pouring speed of the ladle) by more than 80%.
A supporting block is welded on one side of the flashboard, and the stroke of the baffle plate can be adjusted by screwing an adjusting bolt in the supporting block, so that the pulling position of the movable baffle plate is finally determined. Finally, the inoculant flow is fixed by firmly fastening a nut.
When the molten iron secondary inoculation is carried out, the movable baffle is only required to be opened once, and the inoculant slides downwards along the cylinder wall under the action of gravity and inertia and is converged with molten iron flow through the guide of the guide pipe.
In the production process, an operator needs to adjust the opening size of the flashboard according to the ladle turning time and the inoculant amount, and the flowing time is determined. And a certain amount of inoculant is filled into the cylinder according to the process requirements, and the instantaneous inoculation operation can be completed by opening the flashboard once during pouring. When inoculation is not needed, inoculation can be stopped only by closing the flashboard.
Compared with the prior art, the invention has the following advantages:
1. light in weight, easy to install, easy to operate. The weight of the funnel is generally between 5 and 10 kg.
2. The inoculant flows uniformly, and all molten iron in the ladle can be fully mixed with the inoculant. The addition amount and the inoculation time of the inoculant can be adjusted at any time.
3. Reliable operation and is suitable for the secondary inoculation treatment process of large, medium and small castings with different weights. Low manufacturing cost and simple structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic view of a casting pouring and secondary inoculation process;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic front view of the shutter of the present invention;
FIG. 4 is a side view of the shutter of the present invention.
In the figure: 1. a support baffle; 2. a barrel; 3. a shutter plate; 4. a conduit;
A. a gate box; B. a ladle;
3a, a cover plate; 3b, a stop block; 3c, a movable baffle; 3d, supporting blocks; 3e, an adjustable bolt; and 3f, fastening a nut.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
As shown in fig. 1 to 4, the present invention provides a nodular cast iron melting secondary inoculation funnel, comprising:
barrel 2: is fixed above the opening of the sprue box A through a bracket, and the outlet part at the lower end is a tapered cylinder,
supporting baffle 1: the top end of the cylinder body 2 is fixed on the bracket,
the gate plate 3: a conical barrel outlet arranged at the lower end of the barrel 2 for controlling the inoculation time and flow, an
The guide pipe 4: the inoculant is arranged at the output end of the flashboard 3 and guides the inoculant flowing out from the outlet at the lower end of the barrel 2;
the inoculant guiding of the conduit 4 ensures that the inoculant flows out to be converged and mixed with the poured molten iron flow of the ladle B on the path.
Further, in the above-mentioned case,
the shutter 3 includes: the device comprises two cover plates 3a, a stop block 3b, a movable baffle 3c, a supporting block 3d and an adjustable bolt 3 e;
a movable baffle 3c is arranged between the two cover plates 3a, the movable baffle 3c can be freely pulled between the two cover plates 3a, the center lines of the round holes on the two cover plates 3a are overlapped with and penetrate through the center line of the conical cylinder body of the cylinder body 2, namely, the through hole is matched with the outlet at the lower end of the cylinder body 2;
the above-mentioned shutter 3c, which is not provided with the same through holes as the cover plate 3a, ensures that the inoculant remains in the hopper before it is pulled out;
the top end and the two sides of the pulling direction of the movable baffle 3c in the interlayer of the cover plate 3a are provided with limit stop blocks 3b used for limiting the movable baffle 3c, the side surface of the cover plate 3a is provided with a supporting block 3d, the inner hole of the supporting block 3d is provided with an adjustable bolt 3e in a threaded manner, and once the bolt is fixed in position, the adjustable bolt 3e can be locked by firmly fastening nuts 3 f. The direction of the central line of the adjustable bolt 3e is the same as the pulling direction of the movable baffle 3 c;
the side of the movable baffle 3c, which is located on the supporting block 3d, is provided with a boss, and the boss can be attached to the adjustable bolt 3e in the pulling process of the movable baffle 3c, so that the sliding limit of the movable baffle 3c is realized, and the size of the opening of the flashboard is determined.
Further, in the above-mentioned case,
the guide pipe is an outlet angle adjustable structure.
A nodular cast iron smelting secondary inoculation mixing system applying the funnel,
the method comprises the following steps: a conveying device for injecting inoculant into the barrel body 2 and a weighing device for measuring the weight of molten iron in the ladle B; wherein the delivery amount of the inoculant delivery device is determined according to the weight of the molten iron in the ladle B measured by the molten iron weighing device.
According to the invention adopting the technical scheme, the funnel device is fixed above the pouring gate box. When the ladle B starts to turn over, the movable baffle 3c in the flashboard 3 is pulled to open the through holes on the upper cover plate 3a and the lower cover plate 3a, and the flow rate and the flowing time of the inoculant can be controlled by the relative position of the movable baffle 3c and the through holes on the cover plate 3a, namely the opening size. The flowing time of the inoculant is required to be coincident with the molten iron flowing time in the ladle B (the pouring speed of the ladle B is controlled to realize the flowing time) by more than 80%.
A supporting block 3d is welded on one side of the flashboard 3, and the stroke of the baffle 3c can be adjusted by screwing an adjusting bolt 3e in the supporting block 3d, so that the pulling position of the movable baffle 3c is finally determined. Finally, the inoculant flow is fixed by firmly fastening the nut 3 f.
During the operation of secondary inoculation of molten iron, the movable baffle 3c is only required to be opened once, and the inoculant slides downwards along the cylinder wall under the action of gravity and inertia and is converged with molten iron flow through the guide of the guide pipe 4.
In the production process, an operator needs to adjust the opening size of the flashboard according to the ladle turning time and the inoculant amount, and the flowing time is determined. And a certain amount of inoculant is filled into the cylinder according to the process requirements, and the instantaneous inoculation operation can be completed by opening the flashboard once during pouring. When inoculation is not needed, inoculation can be stopped only by closing the flashboard.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. The utility model provides a nodular cast iron smelts secondary inoculation funnel which characterized in that includes:
barrel (2): the lower outlet part of the pouring box (A) is a conical cylinder;
supporting baffle (1): fixing the top end of the cylinder body (2) on the bracket;
shutter (3): a conical barrel outlet position arranged at the lower end of the barrel (2) and used for controlling the inoculation time and flow, an
Conduit (4): the inoculant is arranged at the output end of the flashboard (3) and guides the inoculant flowing out of the outlet at the lower end of the barrel (2);
the inoculant guide of the conduit (4) ensures that the inoculant flows out to be converged and mixed with the molten iron flow poured from the ladle on the path.
2. The nodular cast iron smelting secondary inoculation funnel of claim 1, wherein:
the shutter (3) comprises: the device comprises two cover plates (3a), a stop block (3b), a movable baffle plate (3c), a supporting block (3d) and an adjustable bolt (3 e);
a movable baffle (3c) is arranged between the two cover plates (3a), the movable baffle (3c) can be freely pulled between the two cover plates (3a), the center lines of the round holes on the two cover plates (3a) are overlapped with the center line of the cone-shaped cylinder body and penetrate through the center line, namely the through hole is matched with the outlet at the lower end of the cylinder body (2);
the above mentioned shutter (3c) is not provided with the same through holes as the cover plate (3a), ensuring the retention of the inoculant in the hopper before its extraction;
the top end and two sides of the pulling direction of the movable baffle (3c) in the interlayer of the cover plate (3a) are provided with limit stoppers (3b) for limiting the movable baffle (3 c); the supporting block (3d) is arranged on the side face of the cover plate (3a), the inner hole thread of the supporting block (3d) is provided with the adjustable bolt (3e), and once the position of the bolt is fixed, the nut (3f) can be fastened to lock the adjustable bolt (3 e); the direction of the central line of the adjustable bolt (3e) is the same as the pulling direction of the movable baffle (3 c);
the side, where the supporting block (3d) is located, of the movable baffle (3c) is provided with a protruding portion, the protruding portion can be attached to the adjustable bolt (3e) in the pulling process of the movable baffle (3c), sliding limiting of the movable baffle (3c) is achieved, and therefore the size of the flashboard opening is determined.
3. The nodular cast iron smelting secondary inoculation funnel of claim 1, wherein:
the guide pipe (4) is of an outlet angle adjustable structure.
4. A nodular cast iron smelting secondary inoculation mixing system applying the funnel of any one of claims 1 to 3,
further comprising: a conveying device for injecting an inoculant into the barrel (2) and a weighing device for measuring the weight of molten iron in the ladle; wherein the delivery amount of the inoculant delivery device is determined according to the weight of the molten iron in the ladle at present measured by the molten iron weighing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010591449.5A CN111644578A (en) | 2020-06-24 | 2020-06-24 | Nodular cast iron smelting secondary inoculation funnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010591449.5A CN111644578A (en) | 2020-06-24 | 2020-06-24 | Nodular cast iron smelting secondary inoculation funnel |
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| Publication Number | Publication Date |
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| CN111644578A true CN111644578A (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010591449.5A Pending CN111644578A (en) | 2020-06-24 | 2020-06-24 | Nodular cast iron smelting secondary inoculation funnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114082901A (en) * | 2021-11-23 | 2022-02-25 | 河南科技大学 | Stream inoculation method and device for cast iron production |
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| JP2012161807A (en) * | 2011-02-04 | 2012-08-30 | Honda Motor Co Ltd | Casting procedure and device of the same |
| CN104340693A (en) * | 2013-08-09 | 2015-02-11 | 黄石市志云机电科技研究所 | Adjustable automatic feeding device |
| CN204524191U (en) * | 2015-03-12 | 2015-08-05 | 山东康迈信机械有限公司 | Casting device for adding inoculant |
| CN111085670A (en) * | 2020-01-10 | 2020-05-01 | 芜湖久弘重工股份有限公司 | Inoculation device and inoculation method suitable for thick and large nodular iron castings |
| CN212525970U (en) * | 2020-06-24 | 2021-02-12 | 大连华锐重工铸业有限公司 | Nodular cast iron smelting secondary inoculation funnel and inoculation system comprising same |
-
2020
- 2020-06-24 CN CN202010591449.5A patent/CN111644578A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012161807A (en) * | 2011-02-04 | 2012-08-30 | Honda Motor Co Ltd | Casting procedure and device of the same |
| CN104340693A (en) * | 2013-08-09 | 2015-02-11 | 黄石市志云机电科技研究所 | Adjustable automatic feeding device |
| CN204524191U (en) * | 2015-03-12 | 2015-08-05 | 山东康迈信机械有限公司 | Casting device for adding inoculant |
| CN111085670A (en) * | 2020-01-10 | 2020-05-01 | 芜湖久弘重工股份有限公司 | Inoculation device and inoculation method suitable for thick and large nodular iron castings |
| CN212525970U (en) * | 2020-06-24 | 2021-02-12 | 大连华锐重工铸业有限公司 | Nodular cast iron smelting secondary inoculation funnel and inoculation system comprising same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114082901A (en) * | 2021-11-23 | 2022-02-25 | 河南科技大学 | Stream inoculation method and device for cast iron production |
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Application publication date: 20200911 |