CN103736928A - Evanescent mode pouring system of speed changing box body - Google Patents
Evanescent mode pouring system of speed changing box body Download PDFInfo
- Publication number
- CN103736928A CN103736928A CN201410023882.3A CN201410023882A CN103736928A CN 103736928 A CN103736928 A CN 103736928A CN 201410023882 A CN201410023882 A CN 201410023882A CN 103736928 A CN103736928 A CN 103736928A
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- gate
- sprue
- cross
- cross gate
- gear box
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- 239000002184 metal Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 abstract description 10
- 230000007547 defect Effects 0.000 abstract description 5
- 239000006260 foam Substances 0.000 abstract 1
- 208000015943 Coeliac disease Diseases 0.000 description 42
- 238000000034 method Methods 0.000 description 4
- 238000010114 lost-foam casting Methods 0.000 description 3
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 2
- 238000010113 evaporative-pattern casting Methods 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003031 feeding effect Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
本发明公开了一种变速箱箱体的消失模浇注系统：设置直浇道，在所述直浇道上自上而下依次连通有浇口杯、第一横浇道以及第二横浇道，所述第一横浇道以及第二横浇道各自沿所述直浇道的径向连通在直浇道上；并且，在第一横浇道、第二横浇道远离直浇道的端部分别设有第一内浇道浇注口、第二内浇道浇注口。采用本发明浇注系统进行铸件浇注，充型时间缩短，热量损失减小，并且大大减少缩松缩孔缺陷，有效提高了铸件质量。
The invention discloses a lost foam pouring system for a gearbox case: a sprue is provided, and a sprue cup, a first runner and a second runner are sequentially connected on the sprue from top to bottom, The first runner and the second runner are respectively connected to the sprue along the radial direction of the sprue; and, at the ends of the first runner and the second runner away from the sprue The pouring port of the first inrunner and the pouring port of the second inrunner are respectively provided. By adopting the pouring system of the present invention for pouring castings, the filling time is shortened, the heat loss is reduced, shrinkage and shrinkage defects are greatly reduced, and the quality of castings is effectively improved.
Description
Technical field:
The present invention relates to a kind of evaporative pattern running gate system of evaporative pattern casting system, particularly a kind of gear box.
Background technology:
Lost foam casting is that the paraffin similar to casting dimension shape or bubbles model bonding are combined into model cluster, brush after fireproof coating oven dry, be embedded in vibration molding in dry quartz sand, under negative pressure, pour into a mould, make model gasification, liquid metals occupies modal position, solidifies the novel casting method of cooling rear formation foundry goods.Lost foam casting process comprises running and feeding system design, pouring temperature control, pouring operation control, negative pressure control etc.Running gate system has very consequence in lost foam casting process, is a key of castings production success or failure.Therefore, reasonably Design of Runner System plays vital effect for assurance evaporative pattern casting quality.
In the present invention, gear box is ironcasting, and material is HT250, belongs to thin-wall part, and casing specification is 560 × 480 × 420mm, and wall unevenness is even, and minimum wall thickness (MINI W.) is 8mm, and thickest is 75mm, for 5-10t fork truck.Often there is the problems such as shrinkage porosite shrinkage cavity in the foundry goods that prior art is produced.
Summary of the invention:
For overcoming the defect of prior art, the object of the present invention is to provide a kind of evaporative pattern running gate system of novel gear box, can significantly improve casting quality.
Technical solution problem of the present invention adopts following technical scheme:
A kind of evaporative pattern running gate system of gear box:
Sprue is set, on described sprue, is communicated with successively cup, the first cross gate and the second cross gate from top to bottom, described the first cross gate and the second cross gate separately along the radial communication of described sprue on sprue; And, at the first cross gate, the second cross gate, away from the end of sprue, be respectively equipped with the first ingate sprue gate, the second horizontal ingate sprue gate.
Described the first cross gate is totally semicircle, the middle part of described sprue in semicircle the first cross gate, and two the first ingate sprue gates of described the first cross gate end are divided in gear box first half both sides.
Described the second cross gate is two formation V fonts, and two the second ingate sprue gates of the second cross gate end are in thick large part place, gear box bottom.
The cross section of described the first cross gate, the second cross gate is trapezoidal, and wherein, the end of the first cross gate trapezoid cross section is 2.6: 1 with the ratio of height; At the bottom of the second cross gate trapezoid cross section, it is 0.73: 1 with the ratio of height.
Described the first ingate sprue gate, the second ingate sprue gate are truncated cone-shaped, and the intracavity section at truncated cone-shaped sprue gate gradually becomes, and molten metal flows into end, and to flow out end cross-sectional area ratio with molten metal be 2.25: 1.
Compared with the prior art, beneficial effect of the present invention is embodied in:
Filling time of the present invention is shorter, because running gate system of the present invention is step gating system, the first cross gate, the second cross gate are divided into two-layer up and down, molten metal bath divides two-layer injection cast model by the first cross gate sprue gate, the second cross gate sprue gate, filling time shortens, and thermal loss reduces.Because the present invention is step gating system, the first cross gate is provided with sprue gate in the both sides of the gear box first half, can reduce casing top shrinkage porosite shrinkage cavity defect; Two sprue gates of the second cross gate are distributed in thick large part place, gear box bottom, and its sectional dimension is larger, can well to bottom half, easily produce shrinkage porosite shrinkage cavity position and carry out feeding effect, greatly reduce shrinkage porosite shrinkage cavity defect, effectively improve casting quality.
Accompanying drawing explanation:
Fig. 1 is structural representation of the present invention; Fig. 2 is gear box structural representation; Fig. 3 is application state schematic diagram of the present invention.
Number in the figure: 1 cup, 2 sprues, 3 first cross gates, 31 first ingate sprue gates, 4 second cross gates, 41 second ingate sprue gates, 5 gear boxes.
Below pass through the specific embodiment, and the invention will be further described by reference to the accompanying drawings.
The specific embodiment:
Embodiment: in conjunction with Fig. 1-3, the evaporative pattern running gate system of gear box of the present invention, on sprue 2, be communicated with successively from top to bottom cup 1, the first cross gate 3 and the second cross gate 4, the first cross gates 3 and the second cross gate 4 separately along the radial communication of sprue on sprue 2; And, at the first cross gate, the second cross gate, away from the end of sprue, be respectively equipped with the first ingate sprue gate 31, the second ingate sprue gate 41.
In specifically arranging, the first cross gate 3 be totally semicircle, the middle part of sprue in semicircle the first cross gate, and 31 points, two first ingate sprue gates of the first cross gate end are in gear box 5 first half both sides.
The second cross gate is two and the formation V font that length is different, and two the second ingate sprue gates 41 of the second cross gate end are in thick large part place, gear box bottom.
The cross section of the first cross gate 3, the second cross gate 4 is trapezoidal, and wherein, the end of the first cross gate trapezoid cross section is 2.6: 1 with the ratio of height; At the bottom of the second cross gate trapezoid cross section, it is 0.73: 1 with the ratio of height.
The first ingate sprue gate 31, the second ingate sprue gate 41 are truncated cone-shaped, and the intracavity section at truncated cone-shaped sprue gate gradually becomes, and molten metal flows into end, and to flow out end cross-sectional area ratio with molten metal be 2.25: 1.
In concrete application, when molten metal bath is flowed through step gating system of the present invention, molten metal bath flows into the first cross gate 3, the second cross gate 4 by sprue 2, and inject cast model by sprue gate separately, and filling time is shorter, and thermal loss reduces greatly, molten metal maintains good mobility, avoid the too early appearance of cold burden, can control preferably the molten metal temperature entering in die cavity, greatly improve casting quality.The first cross gate 3 and the second cross gate 4 have sufficient length the mobile direction of molten metal are controlled, and the first cross gate, the second cross gate are isolated mutually, are not interfere with each other, can effectively prevent that molten metal from forming turbulent flow, avoid in molten metal, being mingled with gas, and then effectively avoid foundry goods to produce shrinkage cavity.The cross sectional shape of the first cross gate 3, the second cross gate 4 is trapezoidal, because of the cross gate molten metal thermal loss of trapezoid cross section little, easy to process.And in the present invention, the second cross gate 4 sectional dimensions are greater than the sectional dimension of the first cross gate 3, can well to bottom half, easily produce shrinkage porosite shrinkage cavity position and carry out feeding, greatly reduce shrinkage porosite shrinkage cavity defect, improve casting quality.
In specifically arranging, cup 1 specification is diameter 240mm, high 120mm.Described sprue 2 cross sections are circular, are of a size of sprue diameter 50mm, high 600mm, and bottom is gradual change, by diameter 70mm, is gradient to diameter 50mm, high 250mm.Sprue 2 is positioned at casing one middle side part, apart from casing 120mm; The first cross gate 3 cross sections are trapezoidal, and sectional dimension is upper base 45mm, and 65mm goes to the bottom, high 25mm, the end is 2.6: 1 with the ratio of height, its overall semicircular in shape, both sides, around tank top, the second cross gate 4 cross sections are similarly trapezoidal, upper base 34mm, the 44mm that goes to the bottom, high 60mm, the end is 0.73: 1 with the ratio of height, is positioned at the thick large part of bottom half place.The first ingate sprue gate, the second ingate sprue gate are truncated cone-shaped, cavity volume gradual change, and minimum cross-section is diameter 20mm, and maximum cross section is diameter 30mm, and sprue gate entrance is 2.25: 1 with the ratio of discharge area.The first ingate sprue gate 31 is positioned at boss place, both sides, gear box top, and the second ingate sprue gate 41 is positioned at thick large part place, gear box bottom.Through test measuring and calculating, adopt running gate system of the present invention to carry out gear box cast, filling time is 47.28s; Setting time is 3159.4s; Maximum contraction cavity ratio is 0.707%, has effectively improved casting quality.
Claims (5)
1. an evaporative pattern running gate system for gear box, is characterized in that:
Sprue (2) is set, on described sprue, be communicated with successively cup (1), the first cross gate (3) and the second cross gate (4) from top to bottom, described the first cross gate (3) and the second cross gate (4) separately along the radial communication of described sprue on sprue (2); And, at the first cross gate, the second cross gate, away from the end of sprue, be respectively equipped with the first ingate sprue gate (31), the second ingate sprue gate (41).
2. the evaporative pattern running gate system of a kind of gear box according to claim 1, it is characterized in that, described the first cross gate (3) is totally semicircle, the middle part of described sprue in semicircle the first cross gate, two the first ingate sprue gates (31) of described the first cross gate end are divided in gear box first half both sides.
3. the evaporative pattern running gate system of a kind of gear box according to claim 1, it is characterized in that, described the second cross gate is two formation V fonts, and two the second ingate sprue gates (41) of the second cross gate end are in thick large part place, gear box bottom.
4. the evaporative pattern running gate system of a kind of gear box according to claim 1, it is characterized in that, the cross section of described the first cross gate (3), the second cross gate (4) is trapezoidal, and wherein, the end of the first cross gate trapezoid cross section is 2.6: 1 with the ratio of height; At the bottom of the second cross gate trapezoid cross section, it is 0.73: 1 with the ratio of height.
5. the evaporative pattern running gate system of a kind of gear box according to claim 1, it is characterized in that, described the first ingate sprue gate (31), the second ingate sprue gate (41) are truncated cone-shaped, and the intracavity section at truncated cone-shaped sprue gate gradually becomes, it is 2.25: 1 with molten metal outflow end cross-sectional area ratio that molten metal flows into end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410023882.3A CN103736928B (en) | 2014-01-17 | 2014-01-17 | A kind of evaporative pattern running gate system of gear box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410023882.3A CN103736928B (en) | 2014-01-17 | 2014-01-17 | A kind of evaporative pattern running gate system of gear box |
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| Publication Number | Publication Date |
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| CN103736928A true CN103736928A (en) | 2014-04-23 |
| CN103736928B CN103736928B (en) | 2015-08-19 |
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| CN201410023882.3A Expired - Fee Related CN103736928B (en) | 2014-01-17 | 2014-01-17 | A kind of evaporative pattern running gate system of gear box |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433427A (en) * | 2013-08-29 | 2013-12-11 | 苏州市通润机械铸造有限公司 | Casting system and sand mold structure for box casting |
| CN104550890A (en) * | 2014-12-26 | 2015-04-29 | 宁夏共享装备有限公司 | Pouring system for reducing mold filling speed in pouring gate |
| CN104815962A (en) * | 2015-03-30 | 2015-08-05 | 共享装备有限公司 | Molten iron filtering apparatus for casting |
| CN104874741A (en) * | 2015-06-05 | 2015-09-02 | 临汾鹏泰伟业有限公司 | Manufacturing process of magnesium metal refining kettle |
| CN106955994A (en) * | 2017-05-19 | 2017-07-18 | 河南科技大学 | The temperature control type staged pouring procedure and staged apparatus for pouring of casting |
| CN107199314A (en) * | 2017-03-23 | 2017-09-26 | 山东银光钰源轻金属精密成型有限公司 | A kind of 18KW video display light fixture front frame sand mould casting method |
| CN107755640A (en) * | 2017-10-27 | 2018-03-06 | 襄阳新金开泵业有限公司 | A kind of pouring procedure |
| CN109277526A (en) * | 2018-11-07 | 2019-01-29 | 阜新力达钢铁铸造有限公司 | The casting method of heavy-section ductile iron die-casting machine |
| CN109396332A (en) * | 2018-11-27 | 2019-03-01 | 龙工（福建）铸锻有限公司 | A kind of loading machine gearbox body evaporative pattern of multi-step tilting cross gate |
| CN109550903A (en) * | 2018-12-10 | 2019-04-02 | 中国船舶重工集团公司第十二研究所 | A kind of hot investment casting manufacturing process of thin-walled variable cross-section casting |
| CN110039007A (en) * | 2019-05-05 | 2019-07-23 | 合肥江淮铸造有限责任公司 | A kind of cylinder casting running gate system |
| CN112139454A (en) * | 2020-09-30 | 2020-12-29 | 大连金河铸造有限公司 | Improved slag stopping structure and method for pouring system |
| CN114749603A (en) * | 2022-05-25 | 2022-07-15 | 合肥江淮铸造有限责任公司 | Casting and pouring system for gearbox shell |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433427B (en) * | 2013-08-29 | 2015-04-15 | 苏州市通润机械铸造有限公司 | Casting system and sand mold structure for box casting |
| CN103433427A (en) * | 2013-08-29 | 2013-12-11 | 苏州市通润机械铸造有限公司 | Casting system and sand mold structure for box casting |
| CN104550890A (en) * | 2014-12-26 | 2015-04-29 | 宁夏共享装备有限公司 | Pouring system for reducing mold filling speed in pouring gate |
| CN104815962A (en) * | 2015-03-30 | 2015-08-05 | 共享装备有限公司 | Molten iron filtering apparatus for casting |
| CN104874741A (en) * | 2015-06-05 | 2015-09-02 | 临汾鹏泰伟业有限公司 | Manufacturing process of magnesium metal refining kettle |
| CN104874741B (en) * | 2015-06-05 | 2016-09-07 | 临汾鹏泰伟业有限公司 | A kind of metallic magnesium refining pot manufacturing process |
| CN107199314A (en) * | 2017-03-23 | 2017-09-26 | 山东银光钰源轻金属精密成型有限公司 | A kind of 18KW video display light fixture front frame sand mould casting method |
| CN106955994B (en) * | 2017-05-19 | 2019-02-26 | 河南科技大学 | Temperature-controlled stepped pouring method and stepped pouring device for castings |
| CN106955994A (en) * | 2017-05-19 | 2017-07-18 | 河南科技大学 | The temperature control type staged pouring procedure and staged apparatus for pouring of casting |
| CN107755640A (en) * | 2017-10-27 | 2018-03-06 | 襄阳新金开泵业有限公司 | A kind of pouring procedure |
| CN109277526A (en) * | 2018-11-07 | 2019-01-29 | 阜新力达钢铁铸造有限公司 | The casting method of heavy-section ductile iron die-casting machine |
| CN109277526B (en) * | 2018-11-07 | 2020-09-18 | 阜新力达钢铁铸造有限公司 | Casting method of die casting machine template for thick and large-section ductile iron |
| CN109396332A (en) * | 2018-11-27 | 2019-03-01 | 龙工（福建）铸锻有限公司 | A kind of loading machine gearbox body evaporative pattern of multi-step tilting cross gate |
| CN109550903A (en) * | 2018-12-10 | 2019-04-02 | 中国船舶重工集团公司第十二研究所 | A kind of hot investment casting manufacturing process of thin-walled variable cross-section casting |
| CN109550903B (en) * | 2018-12-10 | 2020-06-02 | 中国船舶重工集团公司第十二研究所 | Precision casting forming method for thin-wall variable-section casting |
| CN110039007A (en) * | 2019-05-05 | 2019-07-23 | 合肥江淮铸造有限责任公司 | A kind of cylinder casting running gate system |
| CN112139454A (en) * | 2020-09-30 | 2020-12-29 | 大连金河铸造有限公司 | Improved slag stopping structure and method for pouring system |
| CN114749603A (en) * | 2022-05-25 | 2022-07-15 | 合肥江淮铸造有限责任公司 | Casting and pouring system for gearbox shell |
| CN114749603B (en) * | 2022-05-25 | 2023-04-28 | 合肥江淮铸造有限责任公司 | Casting and pouring system of gearbox shell |
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