CN103736928A - Evanescent mode pouring system of speed changing box body - Google Patents

Evanescent mode pouring system of speed changing box body Download PDF

Info

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
Authority
CN
China
Prior art keywords
gate
sprue
gear box
ingate
pouring
Prior art date
Application number
CN201410023882.3A
Other languages
Chinese (zh)
Other versions
CN103736928B (en
Inventor
苏勇
汪琴
解明国
吴来发
刘伟
李金磊
马腾迪
Original Assignee
合肥工业大学
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 合肥工业大学 filed Critical 合肥工业大学
Priority to CN201410023882.3A priority Critical patent/CN103736928B/en
Publication of CN103736928A publication Critical patent/CN103736928A/en
Application granted granted Critical
Publication of CN103736928B publication Critical patent/CN103736928B/en

Links

Abstract

The invention discloses an evanescent mode pouring system of a speed changing box body. The evanescent mode pouring system is provided with a sprue, wherein the sprue is sequentially communicated with a pouring cup, a first cross gate and a second cross gate from top to bottom, and the first cross gate and the second cross gate are respectively communicated onto the sprue along the radial direction of the sprue; the end part, away from of the sprue, of each of the first cross gate and the second cross gate is respectively provided with a first inner gate pouring port and a second inner gate pouring port. The pouring system is adopted for pouring a casting, so that the mold filling time is shortened, and the heat loss is reduced; moreover, the shrinkage porosity and cavity weakness can be greatly reduced, and the casting quality can be effectively improved.

Description

A kind of evaporative pattern running gate system of gear box

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.
CN201410023882.3A 2014-01-17 2014-01-17 A kind of evaporative pattern running gate system of gear box CN103736928B (en)

Priority Applications (1)

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

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
CN103736928A true CN103736928A (en) 2014-04-23
CN103736928B CN103736928B (en) 2015-08-19

Family

ID=50494035

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410023882.3A CN103736928B (en) 2014-01-17 2014-01-17 A kind of evaporative pattern running gate system of gear box

Country Status (1)

Country Link
CN (1) CN103736928B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
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
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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04151057A (en) * 1990-10-09 1992-05-25 Honda Motor Co Ltd Shape deciding method for part sealing fluid by using test model
CN201147825Y (en) * 2008-01-31 2008-11-12 宁波合力模具科技股份有限公司 Pouring channel structure of automobile gearbox main casing cast die
CN102049468A (en) * 2009-10-28 2011-05-11 望城县湖动铸业机械有限公司 Process for casting large-sized loader gear box body by using lost foam
CN202239566U (en) * 2011-09-19 2012-05-30 上海镁镁合金压铸有限公司 Pouring gate device for magnesium alloy die-casting part of manual transmission casing in saloon
CN202316956U (en) * 2011-09-19 2012-07-11 上海镁镁合金压铸有限公司 Pouring gate device for magnesium alloy manual transmission shell cover die casting in car
CN202377487U (en) * 2011-12-27 2012-08-15 青州豪章铸造有限公司 Evaporative pattern for gearbox housing casting

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04151057A (en) * 1990-10-09 1992-05-25 Honda Motor Co Ltd Shape deciding method for part sealing fluid by using test model
CN201147825Y (en) * 2008-01-31 2008-11-12 宁波合力模具科技股份有限公司 Pouring channel structure of automobile gearbox main casing cast die
CN102049468A (en) * 2009-10-28 2011-05-11 望城县湖动铸业机械有限公司 Process for casting large-sized loader gear box body by using lost foam
CN202239566U (en) * 2011-09-19 2012-05-30 上海镁镁合金压铸有限公司 Pouring gate device for magnesium alloy die-casting part of manual transmission casing in saloon
CN202316956U (en) * 2011-09-19 2012-07-11 上海镁镁合金压铸有限公司 Pouring gate device for magnesium alloy manual transmission shell cover die casting in car
CN202377487U (en) * 2011-12-27 2012-08-15 青州豪章铸造有限公司 Evaporative pattern for gearbox housing casting

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
宋哲: "《工程车箱壳体类铸件泡塑模设计方法研究》", 《中国优秀硕士学位论文全文数据库(电子期刊)》, vol. 02243, 15 May 2010 (2010-05-15) *
宋哲: "《工程车箱壳体类铸件泡塑模设计方法研究》", 《中国优秀硕士学位论文全文数据库(电子期刊)》, vol. 02243, 15 May 2010 (2010-05-15), pages 59 - 60 *
汪琴等: "《基于数值模拟的箱体浇注系统设计与优化》", 《特种铸造及有色合金》, vol. 33, no. 8, 31 August 2013 (2013-08-31) *

Cited By (15)

* Cited by examiner, † Cited by third party
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
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
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
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
CN106955994B (en) * 2017-05-19 2019-02-26 河南科技大学 The temperature control type staged pouring procedure and staged casting device 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
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

Also Published As

Publication number Publication date
CN103736928B (en) 2015-08-19

Similar Documents

Publication Publication Date Title
CN103418750A (en) Spherical valve main body casting technology
CN103506580A (en) Casting method for large thin-wall valve body steel casting
CN201768879U (en) Vertical casting mould for nodular cast iron
CN101020225A (en) Tube imbedding casting process to form bent cast hole
CN102554130B (en) Casting method for high-nickel austenite nodular cast iron exhaust manifold
CN204035526U (en) Casting mould
JP4163462B2 (en) Mold for casting
CN204735702U (en) Three board die casting die structures of large -scale magnesium alloy parts center multiple feed
CN105382203A (en) Novel casting method for steam turbine valve shell casting
CN202517011U (en) Hollow billet water cooling casting device
CN104985127A (en) Efficient multipart multilayer stacked pouring system and technology
CN104785731B (en) A kind of reduction box casing casting technique
CN204711100U (en) A kind of casting mold for 465Q motor cylinder block
CN201677021U (en) Low-pressure casting hub die
CN105215271B (en) The cored-up mould sand mould structure and cored-up mould method of a kind of gear box casing casting
CN103273012B (en) The fitting device of a kind of Sand-Faced Metal Mould Casting wedge and production method
CN202239599U (en) Molten iron filter sprue cup for sand faced iron mould casting
US9884362B2 (en) Method and system for manufacturing a wheel
CN101693284A (en) Horizontal split multi-stage oil delivery pump body casting technique
CN101618428B (en) Method for casting hub casts of aerogenerators
CN102935491A (en) Metal section mould with controllable cross section and gravity slantingly-rotated foundry technique of aluminum alloy cylinder cover of metal section mould
CN102814465B (en) Spheroidal graphite cast iron casting mould and riser-free casting method adopting same
CN102166639B (en) Integral precision casting method for large complicated thin-walled aluminum alloy cabin components
CN102712041A (en) Tilt type gravity molding device
CN107971464B (en) Mould for producing double-screw extruder barrel bushing

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model