CN213856964U - Argon blowing stream inoculation device for large nodular cast iron cylinder - Google Patents
Argon blowing stream inoculation device for large nodular cast iron cylinder Download PDFInfo
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- CN213856964U CN213856964U CN202022416837.8U CN202022416837U CN213856964U CN 213856964 U CN213856964 U CN 213856964U CN 202022416837 U CN202022416837 U CN 202022416837U CN 213856964 U CN213856964 U CN 213856964U
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- hopper
- inoculant
- argon
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Abstract
The utility model provides a large nodular cast iron cylinder argon blowing stream inoculation device, which comprises an inoculant hopper, wherein the inoculant hopper is fixedly arranged on a hopper pillar, and the bottom end of the inoculant hopper is provided with a mixed gas flow pipe; a gate switch is arranged between the inoculant hopper and the mixed gas flow pipe, and a hopper sealing plug is arranged at the top of the inoculant hopper; and a gas supply system for introducing argon is arranged on the side wall of the inoculant hopper. The device and the method overcome the defects of the common stream inoculation method, and provide the stream inoculation method and the device which are anti-oxidation, have the initial speed of an inoculant belt and intervene in liquid flow at a constant speed and can purify molten iron.
Description
Technical Field
The utility model relates to a large-scale cylinder body casting technical field especially relates to large-scale nodular cast iron cylinder body blows argon along with flowing and breeds the device, is particularly suitable for the casting of large-scale nodular cast iron spare cylinder body.
Background
The cylinder body of a certain nodular iron casting is an important component of an engine, and has high requirements on the performance and the metallographic phase of the body. The material mark QT500-7, the pouring weight is 38T, after the first inoculation by the furnace front flushing method, in order to prevent inoculation recession and strengthen inoculation, the second stream inoculation is carried out during pouring. The common stream inoculation method is that the inoculant enters molten iron along with the stream under the action of gravity, and because stream inoculant particles are very small, 0.2-0.7 mm, are wrapped by air and are easily oxidized, the speed is not uniform, the inoculation is not uniform, and a large amount of oxygen is easily brought in, so that the inoculation is not sufficient, the nodularity and the density of graphite nodules are influenced, and further the body structure and the performance are influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a large-scale nodular cast iron cylinder body blows argon along with flowing and breeds device, and this device and method have overcome the shortcoming in general along with flowing and breed the method, provide one kind anti-oxidation, inoculant area initial velocity at the uniform velocity intervene the liquid stream, can purify the molten iron along with flowing and breed method and device simultaneously.
In order to realize the technical characteristics, the purpose of the utility model is realized as follows: the large-scale nodular cast iron cylinder argon blowing stream inoculation device comprises an inoculant hopper, wherein the inoculant hopper is fixedly arranged on a hopper pillar, and the bottom end of the inoculant hopper is provided with a mixed gas flow pipe; a gate switch is arranged between the inoculant hopper and the mixed gas flow pipe, and a hopper sealing plug is arranged at the top of the inoculant hopper; and a gas supply system for introducing argon is arranged on the side wall of the inoculant hopper.
And a hopper clamping plate fixedly connected with the upper flange of the sprue sand box is arranged at the bottom of the hopper support.
The stream-following inoculant is contained in the inoculant hopper.
The gas supply system comprises a first argon gas inlet threaded pipe fixed on the outer side wall of the upper part of the inoculant hopper;
the second argon gas inlet threaded pipe is fixed on the outer side wall of the mixed gas flow pipe;
and the first argon gas inlet threaded pipe and the second argon gas inlet threaded pipe are respectively connected with an argon gas bottle for providing argon gas.
And the air supply pressure of the first argon air inlet threaded pipe and the air supply pressure of the second argon air inlet threaded pipe are both controlled to be 0.7-0.9 Mp.
And the gas supply pressure of the first argon gas inlet threaded pipe and the second argon gas inlet threaded pipe is controlled to be 0.8 Mp.
The hopper pillar is formed by cutting angle steel.
A bottom plate matched with the hopper clamping plate is fixed at the bottom end of the hopper strut; the gate switch is matched with the gate plate and controls the supply of the inoculant.
The utility model discloses there is following beneficial effect:
1. the device and the method overcome the defects of the common stream inoculation method, and provide the stream inoculation method and the device which are anti-oxidation, have the initial speed of an inoculant belt and intervene in liquid flow at a constant speed and can purify molten iron.
2. The whole inoculation device can be fixed and installed in an auxiliary manner through the hopper clamping plate.
3. The stream inoculant can be used for secondary inoculation of molten iron.
4. The gas supply system can be used for supplying argon, and the smooth mixed ejection of the inoculant is ensured by adopting the upper argon inlet threaded pipe and the lower argon inlet threaded pipe which are different, so that the mixing uniformity of the inoculant and the inoculant is ensured.
5. The optimum mixing effect can be ensured by the above-mentioned gas pressure.
6. The structure of the angle steel is simplified by the angle steel material.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a front view of the overall structure of the present invention.
Fig. 2 is a view of the present invention from the direction B in fig. 1.
FIG. 3 is a structural diagram of the inoculation process of the present invention.
Fig. 4 is a structure view of the gate switch of the present invention.
Fig. 5 is a structural view of the gate plate of the present invention.
Fig. 6 is a bottom plate structure view of the present invention.
Fig. 7 is a cross-sectional view of the hopper pillar of the present invention.
Fig. 8 (a) (b) is a metallographic structure diagram (X100) of a cylinder body after the implementation of the technical scheme of the present invention.
In the figure: a comprises a molten iron pouring ladle, B comprises primarily inoculated molten iron, C comprises a poured molten iron flow, D comprises inoculant particles dispersed in the liquid flow, E comprises continuous flow of inoculant carrying argon, F comprises an inoculant and argon mixed gas flow pipe, G comprises a gate switch, H comprises an inoculant hopper, I comprises a flow-following inoculant, J comprises a first argon gas inlet threaded pipe, K comprises a hopper sealing plug, L comprises a second argon gas inlet threaded pipe, M comprises a hopper support, N comprises a hopper clamping plate, 0 comprises clean molten iron, P comprises a pouring sand box upper flange, Q comprises a pouring basin and a sand box, R comprises a bottom plate and S comprises a gate plate.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
Example 1:
referring to fig. 1-8, the argon blowing stream inoculation device for the large nodular cast iron cylinder comprises an inoculant hopper H, wherein the inoculant hopper H is fixedly arranged on a hopper pillar M, and the bottom end of the inoculant hopper H is provided with a mixed gas flow pipe F; a gate switch G is arranged between the inoculant hopper H and the mixed gas flow pipe F, and a hopper sealing plug K is arranged at the top of the inoculant hopper H; and a gas supply system for introducing argon is arranged on the side wall of the inoculant hopper H. The device and the method overcome the defects of the common stream inoculation method, and provide the stream inoculation method and the device which are anti-oxidation, have the initial speed of an inoculant belt and intervene in liquid flow at a constant speed and can purify molten iron. Through the inoculation device, in the use process, the secondary inoculation process can be carried out on the primarily inoculated molten iron B, and through the inoculant carrying argon, the argon can form bubbles and carry impurities in the molten iron to float upwards in the secondary inoculation process, and finally the argon overflows from the surface of the molten iron.
Further, a hopper clamping plate N fixedly connected with a flange P on the pouring gate sand box is arranged at the bottom of the hopper supporting column M. The whole inoculation device can be fixed and installed in an auxiliary way through the hopper clamping plate N.
Further, a stream inoculant I is contained in the inoculant hopper H. The stream inoculant I can be used for secondary inoculation of molten iron.
Further, the gas supply system comprises a first argon gas inlet threaded pipe J fixed on the outer side wall of the upper part of the inoculant hopper H; the second argon gas inlet threaded pipe L is fixed on the outer side wall of the mixed gas flow pipe F; and the first argon gas inlet threaded pipe J and the second argon gas inlet threaded pipe L are respectively connected with an argon bottle for providing argon gas. The gas supply system can be used for supplying argon, and the smooth mixed ejection of the inoculant is ensured by adopting the upper argon inlet threaded pipe and the lower argon inlet threaded pipe which are different, so that the mixing uniformity of the inoculant and the inoculant is ensured.
Further, the air supply pressure of the first argon inlet threaded pipe J and the air supply pressure of the second argon inlet threaded pipe L are both controlled to be 0.7-0.9 Mp. The optimum mixing effect can be ensured by the above-mentioned gas pressure.
Further, the gas supply pressure of the first argon gas inlet threaded pipe J and the second argon gas inlet threaded pipe L is controlled to be 0.8 Mp.
Further, the hopper support column M is formed by cutting angle steel. The structure of the angle steel is simplified by the angle steel material.
Further, a bottom plate R matched with the hopper clamping plate N is fixed at the bottom end of the hopper supporting column M; the gate switch G is matched with the gate plate S and controls the supply of the inoculant.
Example 2:
the method for argon blowing stream inoculation of the large nodular cast iron cylinder by adopting the inoculation device comprises the following steps:
step one, mounting and fixing an inoculation device: fixing a hopper support M of the whole inoculation device on the edge of a flange P on a pouring sand box through a hopper clamping plate N and a bottom plate R at the bottom of the hopper support M;
step two, filling inoculant: filling a required stream inoculant I into an inoculant hopper H;
step three, blowing argon gas: respectively connecting the first argon gas inlet threaded pipe J and the second argon gas inlet threaded pipe L with argon gas bottles filled with argon gas, adjusting the air pressure, opening a valve to admit air, and simultaneously opening a gate switch G of the hopper;
step four, pouring: when the gate switch G is opened, pouring out the primarily inoculated molten iron B from the molten iron pouring ladle A for inoculation, so that the primarily inoculated molten iron B passes through an inoculant continuous flow E carrying argon gas, and ensuring no flow cutoff when molten iron pouring is carried out;
step five, argon gas overflows: pouring the molten iron flow C into a pouring basin and a sand box Q, wherein the argon forms bubbles and carries impurities in the molten iron to float upwards, and finally the argon overflows from the surface of the molten iron;
and step six, closing the gate switch G and the argon after all molten iron pouring is finished, and finishing argon blowing stream inoculation pouring.
Claims (8)
1. Argon blowing stream inoculation device for large nodular cast iron cylinder bodies is characterized in that: the inoculant feeder comprises an inoculant hopper (H), wherein the inoculant hopper (H) is fixedly arranged on a hopper pillar (M), and the bottom end of the inoculant hopper (H) is provided with a mixed airflow pipe (F); a gate switch (G) is arranged between the inoculant hopper (H) and the mixed gas flow pipe (F), and a hopper sealing plug (K) is arranged at the top of the inoculant hopper (H); and a gas supply system for introducing argon is arranged on the side wall of the inoculant hopper (H).
2. The large nodular cast iron cylinder argon blowing stream inoculation device as claimed in claim 1, wherein: and a hopper clamping plate (N) fixedly connected with an upper flange (P) of the pouring head sand box is arranged at the bottom of the hopper support column (M).
3. The large nodular cast iron cylinder argon blowing stream inoculation device as claimed in claim 1, wherein: the stream-following inoculant (I) is contained in the inoculant hopper (H).
4. The large nodular cast iron cylinder argon blowing stream inoculation device as claimed in claim 1, wherein: the gas supply system comprises a first argon gas inlet threaded pipe (J) fixed on the outer side wall of the upper part of the inoculant hopper (H);
comprises a second argon gas inlet threaded pipe (L) fixed on the outer side wall of the mixed gas flow pipe (F);
and the first argon gas inlet threaded pipe (J) and the second argon gas inlet threaded pipe (L) are respectively connected with an argon bottle for providing argon gas.
5. The large nodular cast iron cylinder argon blowing stream inoculation device as claimed in claim 4, wherein: and the gas supply pressure of the first argon gas inlet threaded pipe (J) and the second argon gas inlet threaded pipe (L) is controlled to be 0.7-0.9 Mp.
6. The large nodular cast iron cylinder argon blowing stream inoculation device as claimed in claim 4, wherein: and the gas supply pressure of the first argon gas inlet threaded pipe (J) and the second argon gas inlet threaded pipe (L) is controlled to be 0.8 Mp.
7. The large nodular cast iron cylinder argon blowing stream inoculation device as claimed in claim 1, wherein: the hopper pillar (M) is formed by cutting angle steel.
8. The large nodular cast iron cylinder argon blowing stream inoculation device as claimed in claim 1, wherein: a bottom plate (R) matched with the hopper clamping plate (N) is fixed at the bottom end of the hopper strut (M); the gate switch (G) is matched with the gate plate (S) and controls the supply of the inoculant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022416837.8U CN213856964U (en) | 2020-10-27 | 2020-10-27 | Argon blowing stream inoculation device for large nodular cast iron cylinder |
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| CN202022416837.8U CN213856964U (en) | 2020-10-27 | 2020-10-27 | Argon blowing stream inoculation device for large nodular cast iron cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112404369A (en) * | 2020-10-27 | 2021-02-26 | 宜昌船舶柴油机有限公司 | Argon blowing stream inoculation device and method for large nodular cast iron cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112404369A (en) * | 2020-10-27 | 2021-02-26 | 宜昌船舶柴油机有限公司 | Argon blowing stream inoculation device and method for large nodular cast iron cylinder |
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