CN106141096A - A kind of casting method of the railway locomotive pump housing - Google Patents

A kind of casting method of the railway locomotive pump housing Download PDF

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Publication number
CN106141096A
CN106141096A CN201610723890.8A CN201610723890A CN106141096A CN 106141096 A CN106141096 A CN 106141096A CN 201610723890 A CN201610723890 A CN 201610723890A CN 106141096 A CN106141096 A CN 106141096A
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CN
China
Prior art keywords
casting
railway locomotive
pump housing
sand
sand mold
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
Application number
CN201610723890.8A
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Chinese (zh)
Inventor
李�诚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SICHUAN NANCHE GONGXIANG CASTING Co Ltd
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SICHUAN NANCHE GONGXIANG CASTING Co Ltd
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.)
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Application filed by SICHUAN NANCHE GONGXIANG CASTING Co Ltd filed Critical SICHUAN NANCHE GONGXIANG CASTING Co Ltd
Priority to CN201610723890.8A priority Critical patent/CN106141096A/en
Publication of CN106141096A publication Critical patent/CN106141096A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/10Cores; Manufacture or installation of cores
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/20Stack moulds, i.e. arrangement of multiple moulds or flasks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/22Moulds for peculiarly-shaped castings

Abstract

The invention discloses the casting method of a kind of railway locomotive pump housing, it uses the combination of series pouring process program and 3D printing technique, and 3D prints the sand mold mould obtaining once pourable more than 10 railway locomotive pump body cast.The present invention is by under the advantage of original 3D printing Modeling Technology, introduce series pouring casting method conventional in conventional cast, simplifying and joining sand technique, controlled equipment investment cost, the casting Technology Design for the later mass smallclothes foundry goods using 3D printing Modeling Technology provides new approaches;Add the quantity of single sandbox medium casting, from one case 4 increase to one case 30, improve sandbox utilization rate and production efficiency, reduce manual skill to require simultaneously, reduce to artificial dependence, it is simple to realize batch production, decrease sand using amount, reduce placer iron ratio, reach the purpose of cost efficiency.

Description

A kind of casting method of the railway locomotive pump housing
Technical field
The present invention relates to a kind of casting method, be specifically related to the casting method of a kind of railway locomotive pump housing, belong to casting Technical field.
Background technology
The pump housing is one of important spare part of railway locomotive, and its contour structures is as shown in Fig. 1, Fig. 2, and its material is HT200, Overall size is 163mm × 149mm × 113mm, and quality is 5.3Kg, belongs to gray iron small pieces.Because belonging to small pieces, Foundry goods die cavity is less, and conventional traditional handicraft makees inner chamber core frequently with tung oil sand, and multiple sand of joining that resin sand does external form are used in mixed way Technique, join sand complex process;Owing to needing independent lower inner cavity core, traditional handicraft, frequently with the flat mode watered of flat casting, is cast in sandbox Part negligible amounts, general only 4, and just can must be completed by the foundry work with long-time hand moulding experience.This method Big to artificial dependence, placer iron ratio is high, and production efficiency is low.
Content of the invention
In view of this, the present invention provides the casting method of a kind of railway locomotive pump housing, improves the railway locomotive pump housing Casting efficiency, reduction this pump housing of casting, to artificial dependence, reduces sand using amount, reduces placer iron ratio, reach the mesh of cost efficiency 's.
For solving above technical problem, the technical scheme is that the casting side using a kind of railway locomotive pump housing Method, the combination of its employing series pouring process program and 3D printing technique, 3D prints and obtains once pourable more than 10 railways The sand mold mould of locomotive pump body cast.
Further, described sand mold mould once pourable 30 railway locomotive pump body cast.
Further, the material that described 3D prints is resin and curing agent.
Further, the casting method of a kind of railway locomotive pump housing that the present invention provides, specifically includes following steps:
(1) Casting Three-dimensional model is set up: set up the three-dimensional mould of foundry goods according to the two-dimentional drawing of foundry goods with 3 d modeling software Type;
(2) determine casting process scheme: according to the threedimensional model obtaining, choose in the gusset of foundry goods base and oil duct end face Top-stitching is die joint, uses series pouring process program, determines quantity and the arrangement mode of foundry goods according to the size of sandbox;
(3) design three-dimensional series connection foundary methods drawing: running gate system uses bottom entering type and unchoked running system, and rising head uses Riser runner, draws out corresponding running gate system and rising head in 3 d modeling software, and application casting simulation software sets to above-mentioned The technique of meter carries out filling type and simulation solidification, verify qualified after be the three-dimensional series connection foundary methods drawing of design;
(4) in 3 d modeling software, the three-dimensional series connection foundary methods drawing according to design is inverse obtains sand mold mould figure, according to The die joint that casting process scheme determines carries out cutting to sand mold mould and obtains different cores;
(5) 3D printer determines according to step (4) sand mold mould figure and dicing position print different cores, workman Sand mold mould is i.e. obtained after core being carried out group core fastening according to drawing.
Further, the quantity of described step (2) medium casting is 30, and arrangement mode is two-layer five row, often arranges 6.
Further, in described step (3), the mold thickness of three-dimensional foundary methods drawing should be greater than 70mm.
Further, in described step (4), the cutting of sand mold mould also includes dissipating for being not easy in sand mold mould remove Husky dead angle part should be partitioned into sand removal loose piece core.
Further, for 1mm core gap should be stayed between the core segmenting in described step (4).
Use 3D to print Modeling Technology and original little inner chamber core can be taken out of realization modularization moulding by external model, it is achieved Moulded without mould;Series pouring is for simple shape, weight is little and appearance and size is less foundry goods and the one taked Universal casting method, can realize that more than one piece is poured into a mould in a sandbox, increases production efficiency.
The present invention, by under the advantage of original 3D printing Modeling Technology, introduces series pouring casting conventional in conventional cast Making method, simplifying and join sand technique, controlled equipment investment cost, the mass printing Modeling Technology for the later 3D of employing is little The casting Technology Design of part foundry goods provides new approaches;Add the quantity of single sandbox medium casting, from one case 4 increase to One case 30, improve sandbox utilization rate and production efficiency, reduce manual skill simultaneously and require, reduce to artificial dependence, Facilitate implementation batch production, decrease sand using amount, reduce placer iron ratio, reached the purpose of cost efficiency.
Brief description
Fig. 1 is pump body cast 3-D solid structure figure;
Fig. 2 is pump body cast 3-D solid structure figure;
Fig. 3 is pump body cast three-dimensional series connection foundary methods drawing;
Fig. 4 is for by the inverse sand mold mould figure obtained of three-dimensional series connection artwork;
Fig. 5 is the sand mold mould figure that cutting is core;
Fig. 6 is the sand core structure schematic diagram taking inner chamber core and oil pipe core out of;
Fig. 7 is the sand mold mould figure completing to organize core.
Marginal data:
1st, die joint;2nd, sprue;3rd, cross gate;4th, ingate;5th, pump body cast;6th, rising head;7th, pump housing oil pipe core Point;8th, oil pipe core support section;9th, sand removal loose piece core;10th, pump housing inner chamber core segment is taken out of;11st, fastening screw;12nd, fasten Bolt.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that technical scheme, below in conjunction with the accompanying drawings and specifically in fact The present invention is described in further detail to execute mode.
The casting method of a kind of railway locomotive pump housing that the present invention provides, it is to use series pouring process program and 3D The combination of printing technique, 3D prints the sand mold mould obtaining once pourable more than 10 railway locomotive pump body cast.This 3D The material printing is resin and curing agent.Preferably described sand mold mould once pourable 30 railway locomotive pump body cast.
Said method specifically includes following steps:
(1) Moulds Based on Three-Dimensional Models is set up: set up correct three according to the two-dimentional drawing requirement 3 d modeling software of the pump housing Dimension product model, sees Fig. 1, Fig. 2.
(2) process program is determined: in order to reduce sand using amount as far as possible, increase quantity and the poured weights of sandbox foundry goods, from And improve product yield, reduce placer iron ratio simultaneously, introduce series pouring process program conventional in conventional cast, concrete scheme For: choosing foundry goods has base plane to place down in sandbox, and molten metal injects die cavity from bottom;Choose pump housing base and oil duct The gusset medium line of end face is die joint, sees Fig. 1, Fig. 2, and wherein 1 is die joint;The big lunar month of 29 days of bulk according to sandbox comes Determining foundry goods quantity, due to standardization sandbox a size of 1200mm × 1000mm × 1200mm, therefore scheme foundry goods quantity is set to 30: it is matrix form arrangement that foundry goods divides two-layer 5 row, often arranges 6 foundry goods, sees Fig. 3.
(3) the three-dimensional foundary methods drawing of design: owing to using the casting program of double-deck series connection, pressure head is relatively big, should ensure that Fill type steady, reduce the scouring force to die cavity, therefore take bottom entering type running gate system, elect open watering as by running channel section area ratio Injection system;Rising head uses general riser runner, and rising head and sprue cross section ratio should be greater than two to ensure to give vent to anger effect, remaining except with Outside the related parameter of mould is without design, remaining related process parameters designs according to conventional casting techniques design cycle, and Drawing out corresponding running gate system and rising head in 3 d modeling software, designed technique is filled by application casting simulation software Type and solidification simulation, verify qualified after be three-dimensional series connection pouring casting process figure as shown in Figure 3, wherein 2 is sprue, 3 For cross gate, 4 is ingate, and 5 is pump body cast, and 6 is rising head.
(4) in 3 d modeling software, the three-dimensional series connection foundary methods drawing according to design is inverse as shown in Figure 4 obtains sand mould Tool figure, the die joint then determining according to casting process scheme carries out cutting to sand mold mould and obtains different cores.Concrete Design and cutting core see shown in Fig. 5 and Fig. 6, and wherein 7 is pump housing oil pipe core segment, and 8 is oil pipe core support section, and 9 is clear Sand loose piece core, 10 for taking pump housing inner chamber core segment out of, and concrete operations are: draws a simple sand in 3 d modeling software Base covers three-dimensional casting technique, using three-dimensional casting technique as cutter, sand base inversely cuts into the sand mold of an entirety, three-dimensional The mold thickness of foundary methods drawing is maintained at more than 70mm, and sand base cuts into the casting mold of complete conformal, reduces mold thickness as far as possible, makes Integral sand core meets the placer iron ratio of technological specification.The die joint determining by process program carries out modularization cutting to sand base, specifically Dicing process is: first die joint determined by edge is by row's cutting integral sand core respectively, then opens for by the cutting of die joint institute Inner chamber core should again split and be merged into and have and inner chamber core is connected in the external form of root fulcrum, the particularly pump of syphon shape Body oils pipe core, should be syncopated as corresponding core fulcrum portion and ensure its intensity, finally to the dead angle part being not easy to removing loose sand It is partitioned into sand removal loose piece core, in order to the loose sand at cleaning running gate system and dead angle.Take into full account during cutting core and meet sand removal, execute The factors such as rear process operations such as painting, for should stay 1mm core gap between the core segmenting.
(5) transfer to production division to utilize 3D printer to print corresponding core for the technique designing, to its sand removal, Apply, dry after according to drawing carry out organize core, then utilize fastening screw 11 and fastening bolt 12 to carry out core to the core organized Bag fastening obtains final sand mold mould, shown in Figure 7, the sand mold mould obtaining is put into covering dry sand in sandbox and can water Note.
The present invention, by under the advantage of original 3D printing Modeling Technology, introduces series pouring casting conventional in conventional cast Making method, simplifying and join sand technique, controlled equipment investment cost, the mass printing Modeling Technology for the later 3D of employing is little The casting Technology Design of part foundry goods provides new approaches;Add the quantity of single sandbox medium casting, from one case 4 increase to One case 30, improve sandbox utilization rate and production efficiency, reduce manual skill simultaneously and require, reduce to artificial dependence, Facilitate implementation batch production, decrease sand using amount, reduce placer iron ratio, reached the purpose of cost efficiency.
Below it is only the preferred embodiment of the present invention, it is noted that it is right that above-mentioned preferred embodiment is not construed as The restriction of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For the art For those of ordinary skill, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these change Enter and retouch and also should be regarded as protection scope of the present invention.

Claims (8)

1. the casting method of a railway locomotive pump housing, it is characterised in that: use series pouring process program and 3D to print skill The combination of art, 3D prints the sand mold mould obtaining once pourable more than 10 railway locomotive pump body cast.
2. the casting method of a kind of railway locomotive pump housing according to claim 1, it is characterised in that: described sand mold mould Once pourable 30 railway locomotive pump body cast.
3. the casting method of a kind of railway locomotive pump housing according to claim 1, it is characterised in that: described 3D prints Material is resin and curing agent.
4. the casting method of a kind of railway locomotive pump housing according to claim 1, it is characterised in that: include following step Rapid:
(1) Casting Three-dimensional model is set up: set up the threedimensional model of foundry goods according to the two-dimentional drawing of foundry goods with 3 d modeling software;
(2) casting process scheme is determined: according to the threedimensional model obtaining, choose the gusset medium line of foundry goods base and oil duct end face For die joint, use series pouring process program, determine quantity and the arrangement mode of foundry goods according to the size of sandbox;
(3) design three-dimensional series connection foundary methods drawing: running gate system uses bottom entering type and unchoked running system, and rising head uses and gives vent to anger Rising head, draws out corresponding running gate system and rising head in 3 d modeling software, and application casting simulation software is to above-mentioned design Technique carries out filling type and simulation solidification, verify qualified after be the three-dimensional series connection foundary methods drawing of design;
(4) in 3 d modeling software, the three-dimensional series connection foundary methods drawing according to design is inverse obtains sand mold mould figure, according to casting The die joint that process program determines carries out cutting to sand mold mould and obtains different cores;
(5) 3D printer determines according to step (4) sand mold mould figure and dicing position print different cores, workman according to Drawing i.e. obtains sand mold mould after core carries out group core fastening.
5. the casting method of a kind of railway locomotive pump housing according to claim 4, it is characterised in that: described step (2) The quantity of medium casting is 30, and arrangement mode is two-layer five row, often arranges 6.
6. the casting method of a kind of railway locomotive pump housing according to claim 4, it is characterised in that: described step (3) The mold thickness of middle three-dimensional foundary methods drawing should be greater than 70mm.
7. the casting method of a kind of railway locomotive pump housing according to claim 4, it is characterised in that: described step (4) The cutting of middle sand mold mould also includes that the dead angle part for being not easy to remove loose sand in sand mold mould should be partitioned into sand removal loose piece Core.
8. the casting method of a kind of railway locomotive pump housing according to claim 4, it is characterised in that: described step (4) In for 1mm core gap should be stayed between the core segmenting.
CN201610723890.8A 2016-08-25 2016-08-25 A kind of casting method of the railway locomotive pump housing Pending CN106141096A (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107350429A (en) * 2017-06-13 2017-11-17 四川共享铸造有限公司 One kind mixing primary and secondary cored-up mould technique
CN107745085A (en) * 2017-11-06 2018-03-02 四川共享铸造有限公司 Chill and the core design method and chill laying method for being easy to place chill
CN108188353A (en) * 2018-02-11 2018-06-22 福建新佳鑫实业有限公司 A kind of metallic plate casting method
CN108940123A (en) * 2018-07-21 2018-12-07 共享智能铸造产业创新中心有限公司 The manufacturing method of straw granulator grain forming module
CN108971425A (en) * 2018-08-22 2018-12-11 四川共享铸造有限公司 A kind of casting method solving the loose class defect of thick-wall nodular iron
CN111957903A (en) * 2020-09-13 2020-11-20 江西同欣机械制造股份有限公司 Process for producing nodular cast iron camshaft by clamping sand mold with iron mold

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FR1031981A (en) * 1951-02-02 1953-06-29 Mass production process by molding in blocks with vertical joints for any metal object or material molded by gravity
CN103586410A (en) * 2012-12-31 2014-02-19 机械科学研究总院先进制造技术研究中心 Modeling sand injection curing material-increasing manufacturing method
CN104707939A (en) * 2015-04-08 2015-06-17 广西玉柴机器股份有限公司 Cast sand core for cylinder cover of diesel engine
CN105127375A (en) * 2015-10-10 2015-12-09 四川南车共享铸造有限公司 Method for machining sand core of intermediate and 3D-printed sand core of intermediate
CN105268925A (en) * 2015-11-27 2016-01-27 四川南车共享铸造有限公司 Casting core assembly for disk type casting of air conditioning compressor and modeling method of casting core assembly
CN105750496A (en) * 2016-04-08 2016-07-13 宁夏共享模具有限公司 Method for modularizing saddle sand mold

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1031981A (en) * 1951-02-02 1953-06-29 Mass production process by molding in blocks with vertical joints for any metal object or material molded by gravity
CN103586410A (en) * 2012-12-31 2014-02-19 机械科学研究总院先进制造技术研究中心 Modeling sand injection curing material-increasing manufacturing method
CN104707939A (en) * 2015-04-08 2015-06-17 广西玉柴机器股份有限公司 Cast sand core for cylinder cover of diesel engine
CN105127375A (en) * 2015-10-10 2015-12-09 四川南车共享铸造有限公司 Method for machining sand core of intermediate and 3D-printed sand core of intermediate
CN105268925A (en) * 2015-11-27 2016-01-27 四川南车共享铸造有限公司 Casting core assembly for disk type casting of air conditioning compressor and modeling method of casting core assembly
CN105750496A (en) * 2016-04-08 2016-07-13 宁夏共享模具有限公司 Method for modularizing saddle sand mold

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107350429A (en) * 2017-06-13 2017-11-17 四川共享铸造有限公司 One kind mixing primary and secondary cored-up mould technique
CN107745085A (en) * 2017-11-06 2018-03-02 四川共享铸造有限公司 Chill and the core design method and chill laying method for being easy to place chill
CN108188353A (en) * 2018-02-11 2018-06-22 福建新佳鑫实业有限公司 A kind of metallic plate casting method
CN108940123A (en) * 2018-07-21 2018-12-07 共享智能铸造产业创新中心有限公司 The manufacturing method of straw granulator grain forming module
CN108940123B (en) * 2018-07-21 2021-06-22 共享智能铸造产业创新中心有限公司 Manufacturing method of particle forming module of straw granulator
CN108971425A (en) * 2018-08-22 2018-12-11 四川共享铸造有限公司 A kind of casting method solving the loose class defect of thick-wall nodular iron
CN111957903A (en) * 2020-09-13 2020-11-20 江西同欣机械制造股份有限公司 Process for producing nodular cast iron camshaft by clamping sand mold with iron mold

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