CN110695319A - Frame pouring system and method - Google Patents
Frame pouring system and method Download PDFInfo
- Publication number
- CN110695319A CN110695319A CN201910953155.XA CN201910953155A CN110695319A CN 110695319 A CN110695319 A CN 110695319A CN 201910953155 A CN201910953155 A CN 201910953155A CN 110695319 A CN110695319 A CN 110695319A
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- Prior art keywords
- sprue
- pouring
- runner
- communicated
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000005266 casting Methods 0.000 claims abstract description 30
- 229910052742 iron Inorganic materials 0.000 claims abstract description 21
- 239000000919 ceramic Substances 0.000 claims description 8
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims 1
- 239000002893 slag Substances 0.000 abstract description 21
- 238000001914 filtration Methods 0.000 abstract description 17
- 230000007547 defect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 208000015943 Coeliac disease Diseases 0.000 description 24
- 210000000078 claw Anatomy 0.000 description 18
- 239000002184 metal Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 11
- 230000000903 blocking effect Effects 0.000 description 7
- 239000003921 oil Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 229910001141 Ductile iron Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009991 scouring Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910001060 Gray iron Inorganic materials 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/086—Filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D35/00—Equipment for conveying molten metal into beds or moulds
- B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
- B22D35/045—Runner base plates for bottom casting ingots
Abstract
The invention relates to a frame gating system which comprises a first sprue, a first cross runner, more than one second sprue, more than one second cross runner, a plurality of filtering units and a plurality of ingates, wherein the first sprue is communicated with the upper part of the first cross runner, the lower part of the first cross runner is respectively communicated with the more than one second sprue, the second sprue is communicated with the upper part of the second cross runner, the lower part of each second cross runner is provided with a filtering unit communicated with the second sprue, and the ingates are communicated with the filtering units. The invention also discloses a frame pouring method, which adopts a flat casting process, wherein the exhaust side faces downwards, the operation side faces upwards, the pouring system is introduced from one side of the oil pan side, and molten iron enters from the bottom to realize a pure bottom pouring type pouring mode. The invention has the beneficial effects that: the operation is simple, the yield is high, and the stability is good; the defects of shrinkage porosity, air holes and slag holes of the frame casting are effectively reduced, the quality loss is reduced, and the complete qualified rate of the casting is greatly improved.
Description
Technical Field
The invention relates to a pouring system and a pouring method, in particular to a pouring system and a pouring method of a rack.
Background
The frame is one of the most important parts of the marine diesel engine frame, and is used as an installation matrix of almost all parts of a diesel engine, and the frame is often in a state of complex stress and variable load during working, so that good mechanical properties such as strength, toughness and impact resistance are indispensable for a frame casting, and particularly a high requirement is put forward on the compactness of an internal matrix structure of the casting; the targeted casting process meets the requirements of increasing strengthening degree (PeCm) and batch production of diesel engine frames.
The original pouring system process adopts a gap bridge type to introduce molten metal from the cylinder hole side and the foot plate claw side respectively, the flow velocity of molten iron is reduced by designing a flow blocking channel, the purpose of slag blocking is realized by designing a multi-stage cross pouring channel, and then the molten iron enters from the bottom of a rack as an inner pouring channel through a ceramic tube to realize bottom pouring. In addition, an inner pouring channel is arranged at the position of the upper box on the side of the foot plate claw, and the liquid level can enter molten iron from the position to reduce the temperature difference when the liquid level rises to the position in the later period of pouring, so that the solidification of castings is facilitated.
As shown in fig. 1(a), fig. 1(b), fig. 1(c) and fig. 1(d), the gating system is composed of a gate socket bag 1-1, a graphite plug-pulling plug 1-2, straight hole ceramic filter sheets 1-3, cylinder hole side pouring channels and foot plate claw side pouring channels, wherein the cylinder hole side pouring channels are composed of cylinder hole side straight pouring channels 1-4, cylinder hole side primary cross pouring channels 1-5, cylinder hole side blocking flow channels 1-6, cylinder hole side secondary cross pouring channels 1-7 and cylinder hole side ingate 1-8; the foot plate claw side pouring gate comprises 1-9 parts of a foot plate claw side first-level straight pouring gate, 1-10 parts of a foot plate claw side first-level cross pouring gate, 1-11 parts of a foot plate claw side blocking flow passage, 1-12 parts of a foot plate claw side second-level cross pouring gate, 1-13 parts of a foot plate claw side second-level straight pouring gate, 1-14 parts of a foot plate claw side third-level cross pouring gate, 1-15 parts of an inner pouring gate transition piece and 1-16 parts of a foot plate claw side inner pouring gate.
There are major problems:
(1) the design of a pouring system is too complex, the molten metal speed is too high, molten iron is fed into an upper inner pouring gate and a lower inner pouring gate simultaneously, so that molten iron is splashed, collided, entrained gas, turbulent flow and the like, and the defects of slag inclusion, air holes and sand inclusion are easily caused.
(2) The upper structure of the casting is basically a large plane, so that the difficulty of air holes, floating of slag inclusions and discharging from an overflow riser is greatly increased.
(3) From the characteristic analysis of the nodular cast iron, the steady slow filling of the molten metal is fully ensured without turbulence phenomenon, and the elements such as Mg, O, S and the like are prevented from generating oxidation slag; the existing product simultaneously has two materials of gray iron and nodular cast iron, and the process is suitable for the original gray iron material but not suitable for the process of the nodular cast iron material.
(4) The original pouring system only stops oxidizing slag in molten iron from entering a cavity by the skimming action of a cross gate, and actually has limited action, and the closed pouring system enables the molten iron to flow at an excessively high speed, so that the skimming action of the cross gate is greatly weakened.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the problem of poor casting quality caused by the characteristics of over-high molten iron flow speed, easiness in splashing and the like of the conventional pouring system is solved.
The invention solves the technical problems through the following technical means:
the gating system of frame, including first sprue, first runner, more than one second sprue, a plurality of filter unit, a plurality of ingate, the upper portion intercommunication of first sprue and first runner, the lower part and the more than one second sprue of first runner communicate respectively, the upper portion intercommunication of second sprue and second runner, every second sprue lower part is equipped with the filter unit rather than the intercommunication, ingate and filter unit intercommunication.
The first sprue and the first cross sprue mainly realize the rapid filling of a pouring system and realize the preliminary slag collection and slag stopping at the initial filling stage by utilizing a pouring system; the second sprue, the second cross gate and the plurality of ingates realize the reduction of the flow rate of molten metal to the maximum extent, reduce the scouring of the cavity and dispersedly introduce the molten metal into the casting from the bottom plane; the multiple filtering units can filter slag and non-metallic impurities in molten iron, improve the flowing state of molten metal, realize low-speed and stable filling of molten iron at the inner pouring gate and prevent the occurrence of turbulent flow, entrainment gas and oxidation slag; the method is simple to operate, high in yield and good in stability; the defects of shrinkage porosity, air holes and slag holes of the frame casting are effectively reduced, the quality loss is reduced, and the complete qualified rate of the casting is greatly improved.
Preferably, a pouring cup is further arranged at the upper part of the first straight pouring channel.
Preferably, the number of the second runners is two, and the number of the second runners is two.
Preferably, the filter unit comprises a filter cavity, and a filter sheet is arranged at an inlet of the filter cavity.
Preferably, the filter sheet is a foamed ceramic filter sheet.
Preferably, the number of the filter units and the number of the ingates are the same.
Preferably, the number of the filter units is 4-20.
Preferably, the ingate comprises a U-shaped ingate and an L-shaped ingate, one end of the U-shaped ingate is communicated with the filter cavity, the other end of the U-shaped ingate is communicated with the exhaust side surface of the rack, one end of the L-shaped ingate is communicated with the filter cavity, and the other end of the L-shaped ingate is communicated with the bottom of the oil bottom shell side of the rack.
Preferably, the ingate is made of ceramic materials.
The invention also provides a pouring method of the rack, which adopts a flat-casting process and adopts the pouring system of the rack, before the pouring system is used for pouring, the exhaust side surface of the rack faces downwards, the operation side faces upwards, the pouring system is introduced from the single side of the oil pan side during pouring, and molten iron enters from the bottom of the cavity of the casting rack through the inner pouring gate.
The invention has the advantages that:
the invention mainly realizes the fast filling of a pouring system and realizes the preliminary slag collection and slag stopping at the initial filling stage by utilizing the pouring system per se through a first straight pouring channel and a first horizontal pouring channel; the second sprue, the second cross gate and the plurality of ingates realize the reduction of the flow rate of molten metal to the maximum extent, reduce the scouring of the cavity and dispersedly introduce the molten metal into the casting from the bottom plane; the multiple filtering units can filter slag and non-metallic impurities in molten iron, improve the flowing state of molten metal, realize low-speed and stable filling of molten iron at the inner pouring gate and prevent the occurrence of turbulent flow, entrainment gas and oxidation slag; the method is simple to operate, high in yield and good in stability; the defects of shrinkage porosity, air holes and slag holes of the frame casting are effectively reduced, the quality loss is reduced, and the complete qualified rate of the casting is greatly improved.
The invention adopts a flat casting process, the exhaust side faces downwards, the operation side faces upwards, the casting system is introduced from one side of the oil pan side, and the ceramic pipe is used as an inner pouring channel to enter molten iron from the bottom to realize a pure bottom casting mode.
Drawings
FIG. 1(a) is a schematic structural diagram of the original process of the present invention;
FIG. 1(b) is an enlarged view at I in FIG. 1 (a);
FIG. 1(c) is an enlarged view at II in FIG. 1 (a);
FIG. 1(d) is an enlarged view at III in FIG. 1 (a);
FIG. 2 is a schematic diagram of a gating system of a rack in accordance with an embodiment of the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a schematic diagram of the operation of an embodiment of the present invention;
fig. 5 is a right side view of fig. 4.
Reference numbers in the figures: the gate comprises a gate seat bag 1-1, a graphite plug-pulling plug 1-2, straight hole ceramic filter sheets 1-3, cylinder hole side sprues 1-4, cylinder hole side primary horizontal runners 1-5, cylinder hole side blocking runners 1-6, cylinder hole side secondary horizontal runners 1-7, cylinder hole side ingates 1-8, foot plate claw side primary vertical runners 1-9, foot plate claw side primary horizontal runners 1-10, foot plate claw side blocking runners 1-11, foot plate claw side secondary horizontal runners 1-12, foot plate claw side secondary vertical runners 1-13, foot plate claw side tertiary horizontal runners 1-14, ingate transition sheets 1-15 and foot plate claw side ingates-16;
the filter device comprises a first sprue 2, a pouring cup 21, a first runner 3, a second sprue 4, a second runner 5, a filter unit 6, a filter cavity 61, a filter plate 62, an inner runner 7, a U-shaped inner runner 71, an L-shaped inner runner 72 and a frame 8.
Detailed Description
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 embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. 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.
The first embodiment is as follows:
as shown in fig. 2, the rack gating system includes a first sprue 2, a first runner 3, two second sprue 4, two second runners 5, a plurality of filter units 6, and a plurality of ingates 7, wherein the first sprue 2 is communicated with the upper portion of the first runner 3, the lower portion of the first runner 3 is respectively communicated with the two second sprue 4, the second sprue 4 is communicated with the upper portion of the second runner 5, each second runner 5 is provided with a filter unit 6 communicated therewith, and the ingates 7 are communicated with the filter units 6; during pouring, the exhaust side of the frame faces downwards, the operation side faces upwards, the pouring system is introduced from one side of the oil pan side, and molten iron enters from the bottom of the cavity of the casting frame through the ingate.
The upper part of the first sprue 2 is also provided with a pouring cup, the bottom of the first sprue is communicated with the midpoint of the first runner 3, the number of the second sprue 4 is two, the two second sprue 4 are respectively communicated with two sides of the bottom of the first runner 3, the number of the second runner 5 is two, and the bottom of the second sprue 4 is communicated with the midpoint of the second runner 5.
Example two:
as shown in fig. 3, the filtering unit 6 in this embodiment includes a filtering cavity 61, the filtering cavity 61 is disposed in an inverted trapezoid structure, and has a gathering and collecting function, the filtering sheet 62 is transversely fixed at a large opening end of the filtering cavity 61 and is used for filtering the casting liquid from the second runner 5, the filtering sheet 61 is a foamed ceramic type filtering sheet, different refractory materials and specification forms such as silicon carbide and corundum can be selected as required, a square structure is adopted in this embodiment, and one filtering sheet 62 is commonly used by two adjacent filtering cavities 61, or separate filtering sheets can be respectively adopted.
The number of the filter units 6 is the same as that of the ingates 7, so that the pouring liquid is ensured to be filtered.
In this embodiment, the number of the second runners 5 is two, the number of the filter units is 16, each runner 5 is communicated with 8 filter units, the number of the ingates is also 16, the ingates include 8U-shaped ingates 71 and 8L-shaped ingates 72, the U-shaped ingates 71 and the L-shaped ingates 72 are arranged at intervals, one end of the U-shaped ingates 71 is communicated with the filter cavity 61, the other end of the U-shaped ingates 71 is communicated with the exhaust side surface of the rack 8, one end of the L-shaped ingates 72 is communicated with the filter cavity 61, the other end of the L-shaped ingates 72 is communicated with the bottom of the oil pan side of the rack 8, and the ingates 7 are made of ceramic materials.
As shown in fig. 3 and 4, the invention adopts a flat casting process, the exhaust side of the rack faces downwards, the operation side faces upwards, the casting system is introduced from one side of the oil pan side, and a pure bottom casting type casting mode is realized by taking a ceramic tube as an inner pouring channel and entering molten iron from the bottom; the first straight pouring gate 2 and the first cross pouring gate 3 mainly realize the quick filling of a pouring system and utilize the pouring system to realize the preliminary slag collection and slag blocking at the initial stage of filling; the second sprue 4, the second cross runner 5 and the plurality of ingates 7 realize the purpose of reducing the flow rate of molten metal to the maximum extent, reducing the scouring of the cavity and dispersedly introducing the molten metal into a casting from the bottom plane; the plurality of filtering units 6 can filter slag and non-metallic impurities in molten iron, improve the flowing state of molten iron, realize low-speed and stable filling of molten iron at the inner pouring gate and prevent the occurrence of turbulent flow, entrainment and oxidation slag;
the method is simple to operate, high in yield and good in stability; the defects of shrinkage porosity, air holes and slag holes of the frame casting are effectively reduced, the quality loss is reduced, and the complete qualified rate of the casting is greatly improved.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The gating system of frame, its characterized in that, including first sprue, first runner, more than one second sprue, more than one second runner, a plurality of filter unit, a plurality of ingate, first sprue and the upper portion intercommunication of first runner, the lower part and the more than one second sprue of first runner communicate respectively, the upper portion intercommunication of second sprue and second runner, every second runner lower part is equipped with the filter unit rather than the intercommunication, ingate and filter unit intercommunication.
2. The rack gating system of claim 1, wherein the upper portion of the first sprue is further provided with a pouring cup.
3. The rack's gating system of claim 1, wherein the second sprue is two and the second runner is two.
4. The rack gating system of claim 1, wherein the filter unit comprises a filter chamber, and a filter plate is disposed at an inlet of the filter chamber.
5. The rack gating system of claim 4, wherein the filter is a ceramic foam filter.
6. The rack gating system of claim 1, wherein the number of filter units and ingates is the same.
7. The rack gating system of claim 1, wherein the number of filter units is 4-20.
8. The rack gating system according to claim 1, wherein the ingate comprises a U-shaped ingate and an L-shaped ingate, one end of the U-shaped ingate is communicated with the filter cavity, the other end of the U-shaped ingate is communicated with the exhaust side surface of the rack, one end of the L-shaped ingate is communicated with the filter cavity, and the other end of the L-shaped ingate is communicated with the bottom of the oil pan side of the rack.
9. The rack gating system of claim 1, wherein the ingate is made of a ceramic material.
10. The frame pouring method is characterized in that the frame pouring system of any one of the frames 1-9 is adopted, before the frame is poured by the frame pouring system, the exhaust side of the frame faces downwards, the operation side faces upwards, the frame pouring system is introduced from one side of the oil pan side, and molten iron enters from the bottom of a cavity of a casting frame through an inner pouring channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910953155.XA CN110695319A (en) | 2019-10-09 | 2019-10-09 | Frame pouring system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910953155.XA CN110695319A (en) | 2019-10-09 | 2019-10-09 | Frame pouring system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110695319A true CN110695319A (en) | 2020-01-17 |
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ID=69199237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910953155.XA Pending CN110695319A (en) | 2019-10-09 | 2019-10-09 | Frame pouring system and method |
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| Country | Link |
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| CN (1) | CN110695319A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113814361A (en) * | 2021-09-26 | 2021-12-21 | 安庆中船柴油机有限公司 | High-quality pouring equipment for complex box body casting |
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| JP2014076451A (en) * | 2012-10-09 | 2014-05-01 | Mitsubishi Heavy Ind Ltd | Casting mold, and casting method |
| CN108927496A (en) * | 2018-07-12 | 2018-12-04 | 陕西柴油机重工有限公司 | A kind of middle high speed diesel engine body running gate system |
| CN208450530U (en) * | 2018-06-25 | 2019-02-01 | 宁波拓铁机械有限公司 | The running gate system of injection molding machine head plate casting |
| CN211304682U (en) * | 2019-10-09 | 2020-08-21 | 安庆中船柴油机有限公司 | Pouring system of frame |
-
2019
- 2019-10-09 CN CN201910953155.XA patent/CN110695319A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202984588U (en) * | 2012-04-12 | 2013-06-12 | 日月重工股份有限公司 | Casting system of casing for aerogenerator base |
| JP2014076451A (en) * | 2012-10-09 | 2014-05-01 | Mitsubishi Heavy Ind Ltd | Casting mold, and casting method |
| CN103170580A (en) * | 2013-03-25 | 2013-06-26 | 上海宏钢电站设备铸锻有限公司 | Process for casting bearing base of gas compressor of combustion gas turbine and pouring system thereof |
| CN208450530U (en) * | 2018-06-25 | 2019-02-01 | 宁波拓铁机械有限公司 | The running gate system of injection molding machine head plate casting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113814361A (en) * | 2021-09-26 | 2021-12-21 | 安庆中船柴油机有限公司 | High-quality pouring equipment for complex box body casting |
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