CN101020226A - Flange casting process - Google Patents

Flange casting process Download PDF

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Publication number
CN101020226A
CN101020226A CN 200710020636 CN200710020636A CN101020226A CN 101020226 A CN101020226 A CN 101020226A CN 200710020636 CN200710020636 CN 200710020636 CN 200710020636 A CN200710020636 A CN 200710020636A CN 101020226 A CN101020226 A CN 101020226A
Authority
CN
China
Prior art keywords
flange
core
bolt hole
foundry goods
sand
Prior art date
Application number
CN 200710020636
Other languages
Chinese (zh)
Inventor
孙述全
吴文荣
张年玉
马忠
Original Assignee
繁昌县金贸铸造有限责任公司
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 繁昌县金贸铸造有限责任公司 filed Critical 繁昌县金贸铸造有限责任公司
Priority to CN 200710020636 priority Critical patent/CN101020226A/en
Publication of CN101020226A publication Critical patent/CN101020226A/en

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Abstract

The flange casting process includes the following steps: 1. making outer mold, main core box of flange casting and core box of flange screw hole; 2. preparing sand core comprising main flange sand core and flange screw hole sand mold, and sand mold with mold cavity comprising main flange mold cavity and flange screw hole mold cavity; and 3. closing mold box, pouring and post-treatment to form the casting. The present invention makes it possible to omit the work of machining screw holes in flange, and has reduced metal consumption, raised production efficiency and lowered production cost.

Description

The casting forming process of flange foundry goods
Technical field
The present invention relates to the casting forming process of flange foundry goods.
Background technology
The flange foundry goods has a flange that is used to connect the bolt hole structure of miscellaneous part at least, for example flanged fitting, valve, present flange cast casting forming technology is: 1) modeling and core box, model forms the exterior contour of flange foundry goods, and core box is to be used for the core box that the flange core cavity is shaped; 2) core, sand mold preparation prepare flange foundry goods core and flange casting sand mold, and the die cavity of the sand mold for preparing is made up of foundry goods agent structure die cavity and flange die cavity, and the flange profile of flange die cavity and flange foundry goods adapts; 3) mould assembling, cast, post processing form the flange foundry goods.Do not have bolt hole on the flange casting finished products flange of making like this, need the processing bolt hole, not only influence production capacity, the precision of bolt hole can't guarantee simultaneously.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of and can directly cast out the flange bolt hole, the casting forming process of the flange foundry goods that the bolt hole precision is guaranteed.
Solve this technical problem, technical scheme of the present invention is: a kind of flange cast casting forming technology, 1) manufacturing profile mould and flange foundry goods agent structure core box and flange bolt hole core box; 2) core, sand mold preparation: prepare flange foundry goods agent structure core and flange bolt hole core earlier, described bolt hole core is made up of the projection post that annulus support and outstanding a plurality of diameters and flange bolt hole adapt, then with the projection post of the core in flange bolt hole towards the middle part of flange foundry goods agent structure core, the core with the flange bolt hole is placed on the flange foundry goods agent structure core again; The die cavity of the described sand mold for preparing is made up of flange foundry goods agent structure die cavity and flange die cavity, and the core in flange die cavity and flange bolt hole adapts; 3) core after will making up is put in the sand mold, and mould assembling, cast, post processing form the flange foundry goods with flange bolt hole.
Described flange bolt hole core is made by the core shooter hot box, and the bolt hole core box is contained on the casting core shooter, injects precoated sand, and mould is incubated 40-120 second at 150-300 ℃, solidifies molding sand, opens core box, takes out core.
Described mould holding temperature is preferably 230 ℃, and temperature retention time is 60-90 second.
The material of described flange foundry goods agent structure core box is an aluminium alloy, and the material of flange bolt hole core box is a metal.
The material of described flange foundry goods agent structure core box is a fiberglass, and the material of flange bolt hole core box is a metal.
The molding sand of described flange foundry goods agent structure core is a clay-bonded sand, and the molding sand of flange bolt hole core is furan resin-sand or phenol resin sand.
Flange cast casting forming technology of the present invention is adopted in such a way, the processing flange bolt hole workload that has overcome prior art is big, avoided because of the defective mass defect that causes of bolt hole processing, reduce metal consumption, improved production efficiency, reduced production cost; But the flange bolt hole precision form of the finished product that casts out, bolt hole aperture and pitch-row size are accurate, need not machining,
Description of drawings
Fig. 1 is full flanged tee casting pipe structural representation;
Fig. 2 is the bolt hole core box structural representation of casting full flanged tee casting pipe shown in Figure 1;
Fig. 3 is the flange pipe core schematic diagram of casting full flanged tee casting pipe shown in Figure 1;
Fig. 4 is the bolt hole core schematic diagram that bolt hole core box shown in Figure 2 prepares;
Fig. 5 is flange pipe core shown in Figure 3 and bolt hole core combination schematic diagram shown in Figure 4;
Fig. 6 is full flanged tee casting pipe sand mold core mould assembling schematic diagram;
In Fig. 1 to Fig. 6,1, T type pipeline; 2, flange; 3, flange bolt hole; 4, flange bolt hole core box; 5, bolt hole cavity; 6, toroidal cavity; 7, support; 8, projection post; 9, flange bolt hole core; 10, flange pipe core; 11, sand mold; 12, flange die cavity; 13, pipeline die cavity.
The specific embodiment
As shown in Figure 1, full flanged tee casting pipe is made up of T type pipeline 1 and three flanges 2, and the structure of three flanges 2 is identical, has six flange bolt holes 3 that uniform being used to connects miscellaneous part on each flange 2 respectively.
Casting forming process to full flanged tee casting pipe is described as follows in conjunction with Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 below: 1) make profile mould and flange pipe core box and flange bolt hole core box 4, flange bolt hole core box 4 adopts casting core shooter hot box, also can adopt the core box of manual back-up sand, bolt hole core box 4 has and flange bolt hole 3 corresponding bolts hole cavitys 5 and the toroidal cavity 6 that is communicated with bolt hole cavity 5, the material of flange pipe core box is aluminium alloy or fiberglass, and the material of flange bolt hole core box 4 is a metal; 2) the profile mould prepares sand mold, and the flange pipe core box prepares flange pipe core 10, and core box 4 preparation flange bolt hole cores 9 in flange bolt hole are with flange bolt hole core 9 and 10 combinations of flange pipe core.Prepare flange pipe core 10 and three flange bolt hole cores 9 earlier, the molding sand of flange pipe core 10 is a clay-bonded sand, the molding sand of flange bolt hole core 9 is furan resin-sand or phenol resin sand, each flange bolt hole core 9 is made up of the projection post 8 that circular support 7 and outstanding a plurality of diameters and flange bolt hole 3 adapt, described flange bolt hole core 10 is made by the core shooter hot box, flange bolt hole core box is contained on the casting core shooter, inject molding sand, mould is incubated 40-120 second at 150-300 ℃, preferably mould is incubated 60-90 second at 230 ℃, solidify molding sand, open core box, take out core.Then with the projection post of each flange bolt hole core 9 towards the middle part of flange pipe core 10, again each flange bolt hole core 9 is placed on the flange pipe core 10; The die cavity of the described sand mold for preparing 11 is made up of pipeline die cavity 13 and flange die cavity 12, and flange die cavity 12 adapts with flange bolt hole core 9.3) core after will making up is put in the sand mold 11, and mould assembling, cast, post processing form the foundry goods with flange bolt hole.But the flange bolt hole precision form of the flanged fitting finished product that casts out like this, bolt hole aperture and pitch-row size are accurate, need not machining, overcome the processing flange bolt hole of prior art workload, avoided because of the defective mass defect that causes of bolt hole processing, metal consumption has reduced 5%-15%, improve production efficiency, reduced production cost.
The above is the casting forming process of the full flanged tee casting pipe of the preferred embodiment of the present invention, equally also be applicable to the flange foundry goods of the flange that has a bolt hole structure that is used to connect miscellaneous part at least, the valve body moulding of valve for example, its casting forming process is basic identical with the casting forming process of full flanged tee casting pipe, valve body agent structure core box need only be replaced flange pipe core box, the core of valve body agent structure replaces the flange pipe core, and the core of valve body agent structure forms the inner chamber of the valve body moulding of valve.But cast out the flange bolt hole precision form of finished product of the valve body moulding of valve like this, bolt hole aperture and pitch-row size are accurate, need not machining, overcome the processing flange bolt hole of prior art workload, avoided because of the defective mass defect that causes of bolt hole processing, alleviated weight, improve production efficiency, reduced production cost.

Claims (6)

1, a kind of flange cast casting forming technology is characterized in that: 1) make profile mould and flange foundry goods agent structure core box and flange bolt hole core box; 2) core, sand mold preparation: prepare flange foundry goods agent structure core and flange bolt hole core earlier, described bolt hole core is made up of the projection post that annulus support and outstanding a plurality of diameters and flange bolt hole adapt, then with the projection post of the core in flange bolt hole towards the middle part of flange foundry goods agent structure core, the core with the flange bolt hole is placed on the flange foundry goods agent structure core again; The die cavity of the described sand mold for preparing is made up of flange foundry goods agent structure die cavity and flange die cavity, and the core in flange die cavity and flange bolt hole adapts; 3) core after will making up is put in the sand mold, and mould assembling, cast, post processing form the flange foundry goods with flange bolt hole.
2, flange cast casting forming technology according to claim 1, it is characterized in that: described flange bolt hole core is made by the core shooter hot box, the bolt hole core box is contained on the casting core shooter, inject precoated sand, mould is incubated 40-120 second at 150-300 ℃, solidify molding sand, open core box, take out core.
3, flange cast casting forming technology according to claim 2, it is characterized in that: described mould holding temperature is 230 ℃, temperature retention time is 60-90 second.
4, according to claim 1 or 2 or 3 described flange cast casting forming technologies, it is characterized in that: the material of described flange foundry goods agent structure core box is an aluminium alloy, and the material of flange bolt hole core box is a metal.
5, according to claim 1 or 2 or 3 described flange cast casting forming technologies, it is characterized in that: the material of described flange foundry goods agent structure core box is a fiberglass, and the material of flange bolt hole core box is a metal.
6, flange cast casting forming technology according to claim 1 is characterized in that: the molding sand of described flange foundry goods agent structure core is a clay-bonded sand, and the molding sand of flange bolt hole core is furan resin-sand or phenol resin sand.
CN 200710020636 2007-03-15 2007-03-15 Flange casting process CN101020226A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200710020636 CN101020226A (en) 2007-03-15 2007-03-15 Flange casting process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200710020636 CN101020226A (en) 2007-03-15 2007-03-15 Flange casting process

Publications (1)

Publication Number Publication Date
CN101020226A true CN101020226A (en) 2007-08-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
CN (1) CN101020226A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101486071B (en) * 2008-12-17 2011-08-10 繁昌县金贸铸造有限责任公司 Technique and equipment for pouring flanged fitting combination
CN102397990A (en) * 2011-05-19 2012-04-04 大连金河铸造有限公司 Bolt hole sand mold positioning process
CN101628319B (en) * 2008-07-14 2012-05-23 中国北车集团大同电力机车有限责任公司 Production method of double-sand mold of resin sand
CN102990009A (en) * 2011-09-16 2013-03-27 江苏标新久保田工业有限公司 Static casting process for gas collecting tube of reforming furnace
CN103084546A (en) * 2013-02-06 2013-05-08 芜湖市金贸流体科技股份有限公司 Casting method of valve cover casting
CN103143686A (en) * 2013-01-31 2013-06-12 洛阳新火种节能技术推广有限公司 Improved method of flange tee foundry technology
CN103990767A (en) * 2014-05-23 2014-08-20 宁波禾顺新材料有限公司 Hot core shell precoated sand modeling process
CN105108071A (en) * 2015-09-02 2015-12-02 新绛县祥和机械有限公司 Formative technology method of single-side flange hollow box casting
CN105750492A (en) * 2016-04-25 2016-07-13 芜湖信友机械制造有限公司 Hot core box die for three-way valve body casting
CN107377886A (en) * 2017-08-01 2017-11-24 浙江博星工贸有限公司 The casting grilled mold technique of engine cam
WO2018103049A1 (en) * 2016-12-08 2018-06-14 王树军 Integrated casting flange and manufacturing process thereof

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101628319B (en) * 2008-07-14 2012-05-23 中国北车集团大同电力机车有限责任公司 Production method of double-sand mold of resin sand
CN101486071B (en) * 2008-12-17 2011-08-10 繁昌县金贸铸造有限责任公司 Technique and equipment for pouring flanged fitting combination
CN102397990A (en) * 2011-05-19 2012-04-04 大连金河铸造有限公司 Bolt hole sand mold positioning process
CN102990009A (en) * 2011-09-16 2013-03-27 江苏标新久保田工业有限公司 Static casting process for gas collecting tube of reforming furnace
CN103143686A (en) * 2013-01-31 2013-06-12 洛阳新火种节能技术推广有限公司 Improved method of flange tee foundry technology
CN103084546B (en) * 2013-02-06 2016-08-03 芜湖市金贸流体科技股份有限公司 A kind of pouring procedure of valve gap foundry goods
CN103084546A (en) * 2013-02-06 2013-05-08 芜湖市金贸流体科技股份有限公司 Casting method of valve cover casting
CN103990767A (en) * 2014-05-23 2014-08-20 宁波禾顺新材料有限公司 Hot core shell precoated sand modeling process
CN103990767B (en) * 2014-05-23 2016-04-13 宁波禾顺新材料有限公司 A kind of hot core shell precoated sand formative technology
CN105108071A (en) * 2015-09-02 2015-12-02 新绛县祥和机械有限公司 Formative technology method of single-side flange hollow box casting
CN105750492A (en) * 2016-04-25 2016-07-13 芜湖信友机械制造有限公司 Hot core box die for three-way valve body casting
WO2018103049A1 (en) * 2016-12-08 2018-06-14 王树军 Integrated casting flange and manufacturing process thereof
CN107377886A (en) * 2017-08-01 2017-11-24 浙江博星工贸有限公司 The casting grilled mold technique of engine cam
CN107377886B (en) * 2017-08-01 2019-06-04 浙江博星工贸有限公司 The casting grilled mold technique of engine cam

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