CN109807285A - A kind of die cast method - Google Patents

A kind of die cast method Download PDF

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Publication number
CN109807285A
CN109807285A CN201810026970.7A CN201810026970A CN109807285A CN 109807285 A CN109807285 A CN 109807285A CN 201810026970 A CN201810026970 A CN 201810026970A CN 109807285 A CN109807285 A CN 109807285A
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China
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sand
metal
type
mould
casting
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CN201810026970.7A
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Chinese (zh)
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于彦奇
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于彦奇
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Priority to CN201711173537 priority
Application filed by 于彦奇 filed Critical 于彦奇
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Pending legal-status Critical Current

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Abstract

The invention discloses a kind of die cast methods, with type back mould (2) design and prepare, five steps of preparation of the design of sand shell mold (3) and preparation, the design of sand cores of castings (4) and preparation, casting (1) including casting pouring technological design, metal.Metal mould cast method provided by the invention, sand mold is replaced with type back mould (2) using metal in the manufacturing process of casting (1), the usage amount of molding sand can be greatly decreased, reduce resource cost and cost, improve the production efficiency of casting (1);Metal can be reused with type back mould (2), and the quality stabilization and consistency of casting (1) product can be improved, reduce the cost that batch prepares casting;Metal is prepared with type back model sand mold (5), metal with type back sand core (6), sand cores of castings (4) and sand shell mould (3) by 3D printing sand mold technology simultaneously, the casting (1) with higher complexity can be prepared without mould, realize quickly manufacture and digitlization casting.

Description

A kind of die cast method
Technical field
The present invention relates to sand casting fields, and in particular to a kind of die cast method.
Background technique
The casting of ironcasting mostly uses greatly sand casting, and sand casting is a kind of tradition casting using silica sand as main material Make technique, it is necessary first to make model, core box, bottom plate and sandbox, then carry out upper and lower sand on upper and lower sandbox with being blended sand The moulding and coremaking of type;And sand core is assembled in sandbox, mould assembling casting.
It is had the following problems in existing sand casting process: 1) needing to consume high-quality timber production model, and make Period is long, costly, should not store;2) a large amount of toolings, such as sandbox, bottom plate are needed;3) molding sand is needed to be blended and regeneration treatment The investment of equipment, sand using amount is bigger, and expense is higher, and sand can generate loss in regenerative process, leads to the consumption and work of resource Industry waste generates;4) since the size of sandbox is fixed, size cannot be changed with casting and flexibly, cause mold thickness big, casting at This height;5) traditional sand mould casting method is difficult to control the mechanical performance and outer dimension of casting, complex-shaped it is particularly difficult to prepare Casting.
Currently, also there is the process cast using metal mold, but cast using metal mold, it is general only suitable For the casting of the lower material of fusion temperature, and usually metal mold is not used to be cast iron casting.Therefore, A kind of die cast method of the casting suitable for cast iron quality becomes the target of those skilled in the art's pursuit.
Summary of the invention
The present invention be in order to overcome in the prior art ironcasting need to cause using a large amount of molding sand in sand casting process The technical issues of production efficiency is low, generates pollution, and properties of product should not guarantee, provides a kind of die cast method, Neng Gou great Width reduces the usage amount of molding sand, improves the performance and production efficiency of product, while can prepare complex-shaped casting, realizes number Word containerless casting production.
The present invention provides a kind of die cast method, and the casting method carries out after using metal die and sand core group type Casting, wherein metal die is had by metal with pattern and is in close contact and has certain thickness with type mould inner surface with metal Sand shell mold composition.
The casting process of casting is completed by traditional sand casting, is needed through a large amount of sand conditioning casting sand mold And sand cores of castings, and sand mold needs the resin for removing molding sand surface by regeneration treatment that could reuse, and manufactures in casting Replace traditional casting sand mold with type back mould using metal in journey, it is only necessary to type is used in sand cores of castings and sand shell mold preparation process Sand, at the same metal with type back mould it is cooling after it is i.e. reusable, can be improved the production efficiency of product;It is carried on the back with a metal with type Mould has better stability in use, can guarantee the stability of cast properties;Meanwhile metal makes with type back mould The recoverable after.Metal die and the thickness of sand shell mold carry out emulation determination by freezing off simulation softward.
A kind of die cast method of the present invention, it is preferred that, comprising the following steps:
S1, pouring technology design: according to the shape of casting, pass through the three-dimensional of modeling software designing cast and running and feeding system Model;
S2, metal carry on the back the design and preparation of mould with type: being designed by modeling software and prepare metal and carry on the back mould with type;
The design and preparation of S3, sand shell mold: being designed by modeling software and prepares sand shell mold;
The design and preparation of S4, sand cores of castings: it is designed by modeling software and prepares sand cores of castings;
The preparation of S5, casting: metal prepared by step S2 is with type back mould, step S3 the sand shell mold prepared and step S4 The laggard row metal casting of the sand cores of castings mould assembly of preparation, using cooling, open form, polishing, cleaning, obtains casting.
A kind of die cast method of the present invention, it is preferred that, step S2 is further included steps of
S21, metal carry on the back the design of mould with type: according to the shape of casting, designing metal by modeling software and carry on the back mould with type Threedimensional model;
S22, metal carry on the back model sand mold and metal with the design and preparation of type back sand core with type: simultaneously by modeling software design It prepares metal and carries on the back model sand mold and metal with type back sand core with type;
S23, metal carry on the back the preparation of mould with type: metal prepared by step S22 carries on the back model sand mold and metal with type and carries on the back mould with type The laggard row metal casting of sand core mould assembly obtains metal with type and carries on the back mould using cooling, open form, polishing, cleaning.
A kind of die cast method of the present invention, it is preferred that, sand shell mold and sand cores of castings pass through 3D Printing sand mold technology is prepared.
A kind of die cast method of the present invention, it is preferred that, metal with type carry on the back model sand mold and metal with Type back sand core is prepared by 3D printing sand mold technology.
The metal prepared by 3D printing carries on the back model sand mold, metal with type and carries on the back sand core, sand cores of castings and sand shell mold with type The casting with lot of complexity can be prepared, the use scope of sand casting is extended.
A kind of die cast method of the present invention, it is preferred that, the inner surface of sand shell mold and casting Outer surface matches;The outer surface of sand cores of castings is matched with the inner surface of casting.
A kind of die cast method of the present invention, it is preferred that, metal carries on the back the inner surface of model sand mold with type It is matched with metal with the outer surface of type back mould;Metal is with the outer surface of type back sand core with metal with the inner surface phase of type back mould Cooperation.
A kind of die cast method of the present invention, it is preferred that, metal carries on the back the inner surface of model sand mold with type With metal with the outer surface coating of type back sand core for avoiding metal with the coating of type back mould scab;The inner surface of sand shell mold The coating for avoiding casting scab is coated with the outer surface of sand cores of castings.
A kind of die cast method of the present invention, it is preferred that, sand shell mold with a thickness of 5~20mm. The thickness of sand shell mold is between 5~20mm, preferably between 10~15mm, can either guarantee that the intensity of sand shell mold again can The usage amount of molding sand is saved to greatest extent.
A kind of die cast method of the present invention, it is preferred that, metal carries on the back mould with type and sand shell mold is Separate assembling is fastened using glue sticking or mechanical snap fastening.
Making for molding sand can be greatly decreased due to using metal die to replace sand mold in the manufacturing process of casting in the present invention Dosage reduces expense and the time of molding sand reprocessing, reduces the consumption of molding sand, improve the production efficiency of casting;Metal with Type back mould can be reused, and can be improved the quality stability of cast product.
The present invention further passes through 3D printing technique and prepares metal with type back mould, metal back sand core, sand cores of castings and sand Shell mold processed can prepare the casting with higher complexity, extend the use scope of sand casting.
Detailed description of the invention
Fig. 1 is a kind of die cast method flow diagram;
Fig. 2 is a kind of die cast method and step S2 flow chart;
Fig. 3 carries on the back model sand mold and metal with type for a kind of die cast method metal and carries on the back sand core mould assembly schematic diagram with type;
Fig. 4 is metal die and sand core mould assembly schematic diagram when prepared by a kind of die cast method casting;
Fig. 5 is the cross-sectional view of metal die, sand core and casting positional relationship when prepared by a kind of die cast method casting;
Fig. 6 is a kind of die cast method cast product effect picture.
Appended drawing reference:
1, casting;2, metal carries on the back mould with type;3, sand shell mold;4, sand cores of castings;5, metal carries on the back model sand mold with type;6, metal Sand core is carried on the back with type.
Specific embodiment
Illustrate a specific embodiment of the invention with reference to the accompanying drawings of the specification.
Embodiment 1
As shown in figs. 1 to 6, a kind of die cast method, comprising the following steps:
S1, pouring technology design: according to the shape of casting 1, pass through the three of modeling software designing cast 1 and running and feeding system Dimension module;
S2, metal carry on the back the design and preparation of mould 2 with type: being designed by modeling software and prepare metal and carry on the back mould 2 with type;Specifically The following steps are included:
S21, metal carry on the back the design of mould 2 with type: according to the shape of casting 1, designing metal by modeling software and carry on the back mould 2 with type Threedimensional model;
S22, metal carry on the back model sand mold 5 and metal with the design and preparation of type back sand core 6 with type: being designed by modeling software And metal is prepared by 3D printing technique and carries on the back model sand mold 5 and metal with type back sand core 6 with type, metal is with type back model sand mold 5 Inner surface is matched with metal with the outer surface of type back mould 2, and metal carries on the back mould 2 with type with the outer surface and metal of type back sand core 6 Inner surface match, metal with type back model sand mold 5 inner surface and metal with type back sand core 6 outer surface coat for keeping away Exempt from metal with the coating of type back 2 scab of mould;
S23, metal carry on the back the preparation of mould 2 with type: metal prepared by step S22 being carried on the back model sand mold 5 and metal with type and is carried on the back with type The laggard row metal casting of 6 mould assembly of sand core obtains metal with type and carries on the back mould 2 using cooling, open form, polishing, cleaning;
The design and preparation of S3, sand shell mold 3: being designed by modeling software and passes through 3D printing technique prepares sand shell mold 3, the inner surface of sand shell mold 3 is matched with the outer surface of casting 1, sand shell mold 3 with a thickness of 10~15mm, metal is carried on the back with type Mould 2 and sand shell mold 3 are separate assembling, are fastened using glue sticking or mechanical snap fastening, and the inner surface of sand shell mold 3, which coats, to be used In the coating for avoiding 1 scab of casting;
The design and preparation of S4, sand cores of castings 4: being designed by modeling software and passes through 3D printing technique prepares sand cores of castings 4, the outer surface of sand cores of castings 4 is matched with the inner surface of casting 1, and the outer surface coating of sand cores of castings 4 is for avoiding casting 1 viscous The coating of sand;
The preparation of S5, casting 1: the sand shell mold 3 and step that metal prepared by step S2 is prepared with type back mould 2, step S3 The laggard row metal casting of 4 mould assembly of sand cores of castings of rapid S4 preparation, using cooling, open form, polishing, cleaning, obtains casting 1.
Described above to be merely exemplary for the purpose of the present invention, and not restrictive, those of ordinary skill in the art understand, Without departing from the spirit and scope defined by the claims, any modification, the variation or equivalent that can be made, will all fall Enter within protection scope of the present invention.

Claims (10)

1. a kind of die cast method, it is characterised in that: the casting method carries out after using metal die and sand core group type Casting, wherein the metal die by metal with type back mould (2) and with the metal with type back mould (2) inner surface be in close contact and It is formed with certain thickness sand shell mold (3).
2. a kind of die cast method according to claim 1, it is characterised in that: the following steps are included:
S1, pouring technology design: according to the shape of casting (1), the casting (1) and running and feeding system are designed by modeling software Threedimensional model;
S2, metal carry on the back the design and preparation of mould (2) with type: being designed by modeling software and prepare the metal and carry on the back mould (2) with type;
The design and preparation of S3, sand shell mold (3): being designed by modeling software and prepares the sand shell mold (3);
The design and preparation of S4, sand cores of castings (4): being designed by modeling software and prepares the sand cores of castings (4);
The preparation of S5, casting (1): the sand shell that the metal prepared by step S2 is prepared with type back mould (2), step S3 The sand cores of castings (4) mould assembly laggard row metal casting of mould (3) and step S4 preparation, using cooling, open form, polishing, clear Reason, obtains the casting (1).
3. a kind of die cast method described in any one of its according to claim 1~2, it is characterised in that: step S2 It further includes steps of
S21, metal carry on the back the design of mould (2) with type: according to the shape of the casting (1), designing the metal by modeling software With the threedimensional model of type back mould (2);
S22, metal carry on the back the design and preparation of sand core (6) with type back model sand mold (5) and metal with type: being designed by modeling software And it prepares the metal and carries on the back sand core (6) with type with type back model sand mold (5) and the metal;
S23, metal carry on the back the preparation of mould (2) with type: the metal prepared by step S22 is with type back model sand mold (5) and the gold Belong to and being poured with the laggard row metal of type back sand core (6) mould assembly, using cooling, open form, polishing, cleaning, obtain the metal with Type carries on the back mould (2).
4. a kind of die cast method according to claim 2, it is characterised in that: the sand shell mold (3) and described Sand cores of castings (4) is prepared by 3D printing sand mold technology.
5. a kind of die cast method according to claim 3, it is characterised in that: the metal carries on the back model sand mold with type (5) it is prepared with type back sand core (6) by 3D printing sand mold technology with the metal.
6. a kind of die cast method according to claim 4, it is characterised in that: the interior table of the sand shell mold (3) Face is matched with the outer surface of the casting (1);The outer surface of the sand cores of castings (4) and the inner surface phase of the casting (1) Cooperation.
7. a kind of die cast method according to claim 5, it is characterised in that: the metal carries on the back model sand mold with type (5) inner surface is matched with the metal with the outer surface of type back mould (2);The metal carries on the back the appearance of sand core (6) with type Face is matched with the metal with the inner surface of type back mould (2).
8. according to claim 2~7 its any one of described in a kind of die cast method, it is characterised in that: the gold Belong to and being coated with the outer surface of type back sand core (6) for avoiding the gold with the inner surface and the metal of type back model sand mold (5) Belong to the coating with type back mould (2) scab;The outer surface coating of the inner surface and the sand cores of castings (4) of the sand shell mold (3) For avoiding the coating of the casting (1) scab.
9. a kind of die cast method according to claim 8, it is characterised in that: the thickness of the sand shell mold (3) For 5~20mm.
10. according to claim 2~9 its any one of described in a kind of die cast method, it is characterised in that: the gold Belonging to type back mould (2) and the sand shell mold (3) is separate assembling, is fastened using glue sticking or mechanical snap fastening.
CN201810026970.7A 2017-11-22 2018-01-11 A kind of die cast method Pending CN109807285A (en)

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Application Number Priority Date Filing Date Title
CN2017111735378 2017-11-22
CN201711173537 2017-11-22

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CN109807285A true CN109807285A (en) 2019-05-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111618248A (en) * 2020-06-04 2020-09-04 湖北军威机械有限公司 Shell mold casting technology of automobile steering nut and steering rocker shaft

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CN105499492A (en) * 2015-12-15 2016-04-20 清华大学 Non-compact structured new casting mold
CN105964939A (en) * 2016-06-02 2016-09-28 四川南车共享铸造有限公司 Cylinder cover casting method
CN106334780A (en) * 2015-07-08 2017-01-18 共享装备有限公司 Method for producing sand mold for cylinder cover through modularization
CN107042281A (en) * 2016-12-20 2017-08-15 广西玉柴机器配件制造有限公司 A kind of production method of the additional axle housing of Sand-Faced Metal Mould Casting car
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

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5861947A (en) * 1981-10-12 1983-04-13 Toshiba Corp Casting method for mold
CN1287928C (en) * 2001-01-19 2006-12-06 李钟毅 Environment protection type energy-saving efficient mould for casting
CN1915559A (en) * 2006-08-31 2007-02-21 上海天申铜业有限公司 Metal mold type gravity casting die for cast of tin bronze, and casting method
CN102873279A (en) * 2012-09-29 2013-01-16 西峡县众德汽车部件有限公司 Method for producing heat-resistant steel automobile exhaust pipes by iron mold sand lining process
CN104889328A (en) * 2015-05-21 2015-09-09 凤冈县凤鸣农用机械制造有限公司 Complex crankshaft casting mold
CN106334780A (en) * 2015-07-08 2017-01-18 共享装备有限公司 Method for producing sand mold for cylinder cover through modularization
CN105328121A (en) * 2015-11-13 2016-02-17 顺德职业技术学院 Die-free fast casting method based on fused deposition technology
CN105499492A (en) * 2015-12-15 2016-04-20 清华大学 Non-compact structured new casting mold
CN105964939A (en) * 2016-06-02 2016-09-28 四川南车共享铸造有限公司 Cylinder cover casting method
CN107042281A (en) * 2016-12-20 2017-08-15 广西玉柴机器配件制造有限公司 A kind of production method of the additional axle housing of Sand-Faced Metal Mould Casting car
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111618248A (en) * 2020-06-04 2020-09-04 湖北军威机械有限公司 Shell mold casting technology of automobile steering nut and steering rocker shaft

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Application publication date: 20190528