CN110125331A - A kind of shape casting technique of casting complicated inner cavity - Google Patents

A kind of shape casting technique of casting complicated inner cavity Download PDF

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Publication number
CN110125331A
CN110125331A CN201910414246.6A CN201910414246A CN110125331A CN 110125331 A CN110125331 A CN 110125331A CN 201910414246 A CN201910414246 A CN 201910414246A CN 110125331 A CN110125331 A CN 110125331A
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CN
China
Prior art keywords
casting
sand mold
sand
mold
inner cavity
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
CN201910414246.6A
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Chinese (zh)
Inventor
郑锐
龚连金
韦民
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.)
Hefei Jac Casting Co Ltd
Original Assignee
Hefei Jac 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.)
Filing date
Publication date
Application filed by Hefei Jac Casting Co Ltd filed Critical Hefei Jac Casting Co Ltd
Priority to CN201910414246.6A priority Critical patent/CN110125331A/en
Publication of CN110125331A publication Critical patent/CN110125331A/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
    • B22C9/02Sand moulds or like moulds for shaped castings
    • 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
    • B22C9/10Cores; Manufacture or installation of cores
    • B22C9/106Vented or reinforced cores
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/22Moulds for peculiarly-shaped castings
    • B22C9/24Moulds for peculiarly-shaped castings for hollow articles

Abstract

The invention discloses a kind of shape casting techniques of casting complicated inner cavity, are related to sand casting technical field.The present invention is the following steps are included: step 1, moulding: is fabricated to sand mold for the molding sand chosen according to part shape to be produced and sand mold drawing;Coremaking: step 2 according to the drawing of part to be produced, is made the inner-cavity structure of part shape complicated part to be produced with steel alloy in advance;Step 3, mould assembly: opening the upper sand mold and lower sand mold of sand mold, and the type that steel alloy preformed parts are mounted on sand mold is intracavitary, then closes sand mold and lower sand mold and forms casting mold.The present invention by using the plasticity of steel alloy, high intensity and with the high amalgamation characteristic of ironcasting, when forming complicated inner cavity, the existing sand core with ceramic, metal material arbor or without arbor is substituted with steel alloy preformed parts and carries out sand casting, effectively raises the production efficiency and convenience of gray iron or G. Iron Castings sand casting.

Description

A kind of shape casting technique of casting complicated inner cavity
Technical field
The invention belongs to sand casting technical fields, more particularly to a kind of shape casting technique of casting complicated inner cavity.
Background technique
Sand casting brings great convenience to people's lives and production, and improves the production efficiency of people;And When production has the gray iron or G. Iron Castings of complicated inner cavity structure, traditional mode is all that will replicate inner cavity to be made into cold core, resin Sand core or shell core;In casting, cold core, resin sand core or shell core are put into sand mold, form product after pouring into high temperature iron liquid Cavity shape;Sand core is easily defeated and dispersed after high-temperature baking, clears up convenient for product cavity.But such as shape of product complexity, need sand core thin When long or bending, sand core strength will be greatly lowered, and to guarantee sand core integrality, need to be put into ceramic material core in sand core internal Bone supports sand core, promotes intensity, and arbor needs to take out, if arbor is bent, is difficult to take as foreign matter in product cleaning Out, difficulty is caused for cleaning.
Therefore it requires study a kind of shape casting technique for casting complicated inner cavity, facilitates people to produce with this.
Summary of the invention
The purpose of the present invention is to provide a kind of shape casting technique of casting complicated inner cavity, by using steel alloy can Plasticity, high intensity and the characteristic with the high amalgamation of ironcasting are substituted when forming complicated inner cavity with steel alloy preformed parts The existing sand core progress sand casting with ceramic, metal material arbor or without arbor, and steel alloy preformed parts and iron Liquid fusion solves existing product there are when elongate curved inner cavity, sand core strength is inadequate, and arbor is difficult to take without taking out Out and the difficult problem of cleaning.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions:
The present invention is a kind of shape casting technique of casting complicated inner cavity, comprising the following steps:
Moulding: step 1 is fabricated to sand mold according to the molding sand that part shape and drawing to be produced will have been chosen;
Step 2, coremaking:, will be in part shape complicated part to be produced with steel alloy according to the drawing of part to be produced Cavity configuration is made in advance;
Mould assembly: step 3 opens the upper sand mold and lower sand mold of sand mold, steel alloy preformed parts is mounted on to the type of sand mold It is intracavitary, it then closes sand mold and lower sand mold and forms casting mold;
Step 4 pours: reasonably selecting pouring position, and pouring metal melt is entered to the casting of casting mold by pouring basin In system, the orientation for finally carrying out certain time is cooling;
Knockout: step 5 separates casting from molding sand and sand mold;
Step 6, cleaning and is examined: remove the cast gate of casting, riser, overlap, burr and surface scab, and examine The quality of casting removes defective casting.
Further, the part to be produced is gray iron piece or G. Iron Castings.
Further, the material of the steel alloy preformed parts in the step 3 is Q235 structural carbon steel.
The invention has the following advantages:
The present invention using the plasticity of steel alloy, high intensity and with this characteristic of the high amalgamation of ironcasting, it is multiple in molding When miscellaneous inner cavity, come make alloy pipe arbor substitute existing ceramic material arbor, metal material arbor or sand core without arbor into Row sand casting, and steel alloy preformed parts are merged with iron liquid, without taking out, solving product, there are elongate curved inner cavities When, sand core strength is inadequate, and arbor is difficult to take out and clear up difficult problem, effectively raises gray iron or G. Iron Castings sand mold The production efficiency and convenience of casting.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common Technical staff's all other embodiment obtained without creative efforts belongs to the model that the present invention protects It encloses.
A kind of shape casting technique of casting complicated inner cavity, comprising the following steps:
Moulding: step 1 is fabricated to sand mold according to the molding sand that part shape and drawing to be produced will have been chosen;And it wants It asks type sand permeability, plasticity, deformability, fire resistance good, and there is certain intensity;According to the structure of part to be produced And shape draws the drawing of molding sand in advance, and the drawing size of molding sand is greater than the size of part;
Step 2, coremaking:, will be in part shape complicated part to be produced with steel alloy according to the drawing of part to be produced Cavity configuration is made in advance;Drawing is the drawing for drawing part in advance according to the structure and shape of part to be produced;Tradition It is the part sand casting for completing to have complicated inner cavity structure, is that the arbor of ceramics or metal material is placed in sand core The intensity of sand core is improved in portion as bone, and to guarantee the complicated shape molding of the lumen portion of part, and arbor is as different Object needs to take out in product cleaning, if arbor is bent, is difficult to take out, and the cleaning of part is relatively difficult;The present invention is The subregional complicated shape of the inner cavity for being directly fabricated to part with steel alloy, instead of ceramic material arbor, metal material arbor Or the sand core (cold core, resin sand core or shell core) without arbor, and steel alloy preformed parts are merged with iron liquid, without taking out, Effectively raise the production efficiency and convenience of gray iron or G. Iron Castings sand casting;
Mould assembly: step 3 opens the upper sand mold and lower sand mold of sand mold, steel alloy preformed parts is mounted on to the type of sand mold It is intracavitary, it then closes sand mold and lower sand mold and forms casting mold;If herein if horizontal moulding, sand mold includes upper sand mold under Sand mold;If then sand mold includes left sand mold and right sand mold, can be carried out according to the sand casting of actual parts if vertical moulding Select sand mold;
Step 4 pours: reasonably selecting pouring position, and is steadily rapidly poured into molten metal by pouring basin In the running gate system of casting mold, the orientation for finally carrying out certain time is cooling;
Step 5, knockout: separating casting from molding sand and sand mold, and alloy pipe arbor not from It pours in formation of parts and takes out, a part as part;
Step 6, cleaning and is examined: remove the cast gate of casting, riser, overlap, burr and surface scab, and examine The quality of casting removes defective casting.
Wherein, part to be produced is gray iron piece or G. Iron Castings.
Wherein, the steel alloy preformed parts material in step 3 is Q235 structural carbon steel, and Q235 structural carbon steel is Daily described A3 steel, Q235 structural carbon steel have plasticity it is good, with iron liquid amalgamation is good and high strength and deformation Advantage.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example. Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close Suitable mode combines.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.

Claims (3)

1. a kind of shape casting technique of casting complicated inner cavity, which comprises the following steps:
Moulding: the molding sand chosen is fabricated to sand mold according to part shape to be produced and sand mold drawing by step 1;
Coremaking: step 2 according to the drawing of part to be produced, is tied the inner cavity of part shape complicated part to be produced with steel alloy Structure is made in advance;
Mould assembly: step 3 opens the upper sand mold and lower sand mold of sand mold, steel alloy preformed parts is mounted on to the type chamber of sand mold It is interior, it then closes sand mold and lower sand mold and forms casting mold;
Step 4 pours: reasonably selecting pouring position, and pouring metal melt is entered to the running gate system of casting mold by pouring basin Interior, the orientation for finally carrying out certain time is cooling;
Knockout: step 5 separates casting from molding sand and sand mold;
Step 6, cleaning and is examined: remove the cast gate of casting, riser, overlap, burr and surface scab, and examine casting Quality, remove defective casting.
2. a kind of shape casting technique of casting complicated inner cavity according to claim 1, which is characterized in that described to be produced Part is gray iron piece or G. Iron Castings.
3. a kind of shape casting technique of casting complicated inner cavity according to claim 1, which is characterized in that the step 3 In the steel alloy preformed parts material be Q235 structural carbon steel.
CN201910414246.6A 2019-05-17 2019-05-17 A kind of shape casting technique of casting complicated inner cavity Pending CN110125331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910414246.6A CN110125331A (en) 2019-05-17 2019-05-17 A kind of shape casting technique of casting complicated inner cavity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910414246.6A CN110125331A (en) 2019-05-17 2019-05-17 A kind of shape casting technique of casting complicated inner cavity

Publications (1)

Publication Number Publication Date
CN110125331A true CN110125331A (en) 2019-08-16

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CN201910414246.6A Pending CN110125331A (en) 2019-05-17 2019-05-17 A kind of shape casting technique of casting complicated inner cavity

Country Status (1)

Country Link
CN (1) CN110125331A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111360207A (en) * 2020-03-30 2020-07-03 嘉兴民政石油机械附件厂 Production process of ball valve for oil well pump
CN113441686A (en) * 2020-03-28 2021-09-28 昆山市世达精密机械有限公司 Method for manufacturing aluminum casting with complex cavity
CN113579162A (en) * 2021-08-02 2021-11-02 李景忠 Renewable inorganic adhesive shell mold casting integrated molding process
CN113894253A (en) * 2021-09-24 2022-01-07 深圳市北工实业有限公司 Casting process adopting hollow metal mold core and hollow metal part

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5568168A (en) * 1978-11-16 1980-05-22 Keiichiro Miyazaki Insert casting method of pipe body of holed casting
JPS5942584B2 (en) * 1979-03-16 1984-10-16 株式会社クボタ Casting method for engine crankshafts
CN1039546A (en) * 1988-07-07 1990-02-14 施瓦布铸造股份有限公司 The method of casting metals that is linked to be integral heat exchange
CN101020225A (en) * 2006-12-20 2007-08-22 天水星火机床有限责任公司 Tube imbedding casting process to form bent cast hole
CN104338898A (en) * 2013-08-09 2015-02-11 广东正茂精机有限公司 Hydraulic oil inner circulation type fixed mold plate casting technology of injection molding machine
CN104384443A (en) * 2014-11-07 2015-03-04 滁州金诺实业有限公司 Process for fabricating template pipe-containing cast part in manner of pre-embedding stainless steel pipeline
CN104923732A (en) * 2015-05-15 2015-09-23 中国航空工业集团公司北京航空材料研究院 Method for casting titanium or titanium alloy casting with special-shaped inner hole
CN105234353A (en) * 2015-10-22 2016-01-13 贵州安吉航空精密铸造有限责任公司 Casting process for pipeline portion of casting with long and thin pipeline
CN107626891A (en) * 2017-09-06 2018-01-26 陕西柴油机重工有限公司 A kind of preparation method of diesel engine water oil-piping casting mold and water oil-piping

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5568168A (en) * 1978-11-16 1980-05-22 Keiichiro Miyazaki Insert casting method of pipe body of holed casting
JPS5942584B2 (en) * 1979-03-16 1984-10-16 株式会社クボタ Casting method for engine crankshafts
CN1039546A (en) * 1988-07-07 1990-02-14 施瓦布铸造股份有限公司 The method of casting metals that is linked to be integral heat exchange
CN101020225A (en) * 2006-12-20 2007-08-22 天水星火机床有限责任公司 Tube imbedding casting process to form bent cast hole
CN104338898A (en) * 2013-08-09 2015-02-11 广东正茂精机有限公司 Hydraulic oil inner circulation type fixed mold plate casting technology of injection molding machine
CN104384443A (en) * 2014-11-07 2015-03-04 滁州金诺实业有限公司 Process for fabricating template pipe-containing cast part in manner of pre-embedding stainless steel pipeline
CN104923732A (en) * 2015-05-15 2015-09-23 中国航空工业集团公司北京航空材料研究院 Method for casting titanium or titanium alloy casting with special-shaped inner hole
CN105234353A (en) * 2015-10-22 2016-01-13 贵州安吉航空精密铸造有限责任公司 Casting process for pipeline portion of casting with long and thin pipeline
CN107626891A (en) * 2017-09-06 2018-01-26 陕西柴油机重工有限公司 A kind of preparation method of diesel engine water oil-piping casting mold and water oil-piping

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113441686A (en) * 2020-03-28 2021-09-28 昆山市世达精密机械有限公司 Method for manufacturing aluminum casting with complex cavity
CN111360207A (en) * 2020-03-30 2020-07-03 嘉兴民政石油机械附件厂 Production process of ball valve for oil well pump
CN113579162A (en) * 2021-08-02 2021-11-02 李景忠 Renewable inorganic adhesive shell mold casting integrated molding process
CN113894253A (en) * 2021-09-24 2022-01-07 深圳市北工实业有限公司 Casting process adopting hollow metal mold core and hollow metal part

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Application publication date: 20190816

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