CN101486071A - Technique and equipment for pouring flanged fitting combination - Google Patents

Technique and equipment for pouring flanged fitting combination Download PDF

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Publication number
CN101486071A
CN101486071A CNA2008102339077A CN200810233907A CN101486071A CN 101486071 A CN101486071 A CN 101486071A CN A2008102339077 A CNA2008102339077 A CN A2008102339077A CN 200810233907 A CN200810233907 A CN 200810233907A CN 101486071 A CN101486071 A CN 101486071A
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China
Prior art keywords
core
flange
bolt
pipeline
die cavity
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Application number
CNA2008102339077A
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Chinese (zh)
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CN101486071B (en
Inventor
孙述全
高峰
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JINMAO CASTING CO Ltd FANCHANG COUNTY
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JINMAO CASTING CO Ltd FANCHANG COUNTY
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Priority to CN2008102339077A priority Critical patent/CN101486071B/en
Publication of CN101486071A publication Critical patent/CN101486071A/en
Application granted granted Critical
Publication of CN101486071B publication Critical patent/CN101486071B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses technology for combined casting of flanged fitting, which comprises the following steps: firstly, manufacturing a flanged bolt convex post sand core die, a flanged bolt concave hole sand core die, a flanged pipeline sand core die and a pipeline profile die; secondly, utilizing prepared and formed dies to produce a bolt convex post sand core, a bolt concave hole sand core and a flanged pipeline sand core and prepare a pipeline profile die cavity on molding sand; thirdly, mutually combining and forming the bolt convex post sand core, the bolt concave hole sand core and the flanged pipeline sand core which are prepared and formed, and placing the bolt convex post sand core, the bolt concave hole sand core and the flanged pipeline sand core into a flanged core box mold cavity of the pipeline profile die cavity; and fourthly, forming finished product structural pipe fitting without subsequent processing through box combination, assembly of a casting system, casting and after-treatment. Various components of the pipe fitting product produced by the technology are closely matched and positioned and fixed; the produced pipe fitting product has good surface cleanliness and high shape and dimension precision, so that subsequent processing of the next procedure is not needed; and simultaneously a mold sand core assembly is utilized for procedure preparation during production, so that the technology is favorable for multi-person cooperative operation, improves the production efficiency, saves the production cost, and develops a novel mode of casting technology.

Description

A kind of flanged fitting composite pouring technology and casting equipment
Technical field
The invention belongs to a kind of method and apparatus that is used for casting technology field, specifically, relate to a kind of flanged fitting composite pouring technology and casting equipment.
Background technology
At present, in the flanged fitting pouring technology, at least have secondary structure mold, a secondary core box mould that forms the flange tube intracavity that forms flange bend pipe external form, the exterior contour of the blue pipe fitting of profile mould forming method, the core box mould forms the endoporus of flanged fitting, does not have bolt hole on the casting finished products flange of making like this, these bolts hole need be got out, not only influence production capacity, the precision of bolt hole can't guarantee simultaneously; Or structure mold with a secondary formation flange bend pipe external form, the one secondary core box mould that forms inner cavity of pipe, the one secondary flange bolt hole convex cylinder core mold that forms, the exterior contour of the blue pipe fitting of profile mould forming method, core box forms the endoporus of flanged fitting, flange convex cylinder core is enclosed within on the flanged fitting core, the exterior contour of itself and flanged fitting makes up mutually, form the fitting structure die cavity, flanged fitting with this explained hereafter, though flange bolt hole once-forming, reduce postorder machining, improved the bolt hole accuracy of manufacture, but because of pipeline configuration sand mold stamp very easily under the effect of molten iron, be enclosed within on the flanged fitting core because of flange convex cylinder core simultaneously, so be difficult to accurate location during the moulding mould assembling, therefore be difficult to form and produce benefit in batches, be unfavorable for large-scale industrial production.
Summary of the invention
Technical problem to be solved by this invention is, adopts traditional pouring technology, or adopts two secondary mould structures to cause influencing production capacity, and precision can't guarantee; Adopt three secondary mould structures to cause being difficult to accurate location, be difficult to form and produce benefit in batches, be unfavorable for technical problems such as large-scale industrial production, and a kind of flanged fitting composite pouring technology and casting equipment are provided.
A kind of flanged fitting composite pouring of technical scheme provided by the present invention technology comprises:
A, at first makes flange bolt convex core mold, flange bolt shrinkage pool core mold, flange pipe core mold, pipeline external form mould;
B, secondly utilizes the mould production bolt convex core, bolt shrinkage pool core, flange pipe core and the Chong tubulation road external form die cavity on molding sand that prepare shaping;
C, then, bolt convex core, bolt shrinkage pool core, the mutual combination forming of flange pipe core that will the preparation moulding be put into the flange core box die cavity of pipeline external form die cavity;
D, last by mould assembling and running gate system, cast, post processing are installed, forms the finished product structure pipe fitting that need not following process.
Described bolt convex core and bolt shrinkage pool core contain and finished product flange bolt pass same structure number, and the projection core is used to form the flange bolt pass; Bolt convex core and bolt shrinkage pool core are located mutually by projection and shrinkage pool, form flange structural core chamber.
Described flange pipe core is the two-piece type planform, forms core pipe fitting internal cavities mutually behind the mould assembly, and port is that upper and lower surface is a plane special construction shape, and it inserts mutually with flange bolt projection core endoporus and cooperates, and forms the combining structure core.
Described pipeline external form die cavity is made up of pipeline external mold die cavity and flange core box die cavity, and flange core box die cavity is used to lay the flange arrangement core box of group type, and pipeline external mold die cavity is used for cooperatively interacting with the flange pipe core, to form the pipeline configuration die cavity.
Described flange bolt projection core, flange bolt shrinkage pool core, flange pipe core are injected precoated sand by hot box shoot core machine, and mould is incubated 60~120 seconds in 190~230 ℃, complete behind the curing molding sand.
Described combining structure is that flange bolt projection core and flange bolt shrinkage pool core make up mutually, and two flange pipe cores make up mutually; Flange bolt projection core endoporus and pipeline core print make up mutually, and each inter-module is located mutually and closely cooperated, in case molten iron leaks; Flange core box after the combination does not have the gap and puts into flange core box die cavity, by last nowel mould assembling location, forms combined type cast model.
Described molding sand is common clay sand or furan resin-sand.
The pipeline core that described two flange pipe cores are formed mutually is interior hollow structure, and pipeline core print and pipeline core print endoporus are supported for the same structure size shape, with being 1 degree inclined plane shape.
Described casting equipment comprises that flange bolt projection core mold, flange bolt shrinkage pool core mold, flange pipe core mold, pipeline external form mould are formed by combining, described flange bolt projection core mold is used to form flange bolt projection core, flange bolt shrinkage pool core mold is used to form flange bolt shrinkage pool core, the flange pipe core mold is used to form the pipeline core, and pipeline external form mould is used to form pipeline external mold die cavity and flange core box die cavity.
Described bolt convex core and bolt shrinkage pool core contain and finished product flange bolt pass same structure number, and the projection core is used to form the flange bolt pass; Bolt convex core and bolt shrinkage pool core are located mutually by projection and shrinkage pool, form flange structural core chamber; Described flange pipe core is the two-piece type planform, forms core pipe fitting internal cavities mutually behind the mould assembly, and port is that upper and lower surface is a plane special construction shape, and it inserts mutually with flange bolt projection core endoporus and cooperates, and forms the combining structure core; Described pipeline external form die cavity is made up of pipeline external mold die cavity and flange core box die cavity, and flange core box die cavity is used to lay the flange arrangement core box of group type, and pipeline external mold die cavity is used for cooperatively interacting with the flange pipe core, to form the pipeline configuration die cavity.
Described core mold is the antifriction metal (AFM) material, and pipeline external form mould is an aluminum alloy material.
Adopt technical scheme provided by the present invention, can effectively solve and adopt traditional pouring technology, or adopt two secondary mould structures to cause influencing production capacity, precision can't guarantee; Adopt three secondary mould structures to cause being difficult to accurate location, be difficult to form and produce benefit in batches, be unfavorable for technical problems such as large-scale industrial production; The present invention can provide a kind of pipe fitting to pour into a mould combined novel process method, and the core combination by different structure has improved product quality and production efficiency, has saved production cost, has simplified the manufacturing technology requirement to product.
Description of drawings
Following the present invention is an example with 90 ° of flange bend pipes, and the invention will be further described in conjunction with the accompanying drawings:
Fig. 1 is 90 degree flange bend pipe finished product structural representations;
Fig. 2 is 90 degree flange bend pipe casting forming process flow charts;
Fig. 3 is 90 degree flange bend pipe combining structure model schematic diagrames;
Fig. 4 is 90 degree flange arrangement core box combination schematic diagrames;
Fig. 5 is 90 degree flange bend pipe external mold die cavity schematic diagrames;
Fig. 6 is 90 degree pipeline core combination schematic diagrames;
Fig. 7 is 90 degree pipeline cores and flange arrangement core box combination schematic diagram;
Wherein, 1 is flange bolt projection core; 2 is flange bolt shrinkage pool core; 3 is flange core core chamber; 4 is the flange pipe die cavity; 5 is the pipeline core; 6 is pipeline core cavity; 7 is the pipeline core print; 8 is pipeline external mold die cavity; 9 is flange core box die cavity; 10 is mold gate; 11 is molding sand; 12 is sandbox; 13 is that pipeline core print endoporus supports; 14 is bolt convex core jack; 15 is the bolt convex core; 16 is the outer chamfering of flange core box.
The specific embodiment
The technical solution adopted in the present invention is that a kind of flanged fitting composite pouring technology comprises:
A, at first makes flange bolt convex core 1 mould, flange bolt shrinkage pool core 2 moulds, flange pipe core 5 moulds, pipeline external form mould;
B, secondly utilizes the mould production bolt convex core 15, bolt shrinkage pool core, flange pipe core 5 and the Chong tubulation road external form die cavity on molding sand 11 that prepare shaping;
C, then, bolt convex core 15, bolt shrinkage pool core, flange pipe core 5 mutual combination formings that will the preparation moulding be put into the flange core box die cavity 9 of pipeline external form die cavity;
D, last by mould assembling and running gate system, cast, post processing are installed, forms the finished product structure pipe fitting that need not following process.
Described bolt convex core 15 contains and finished product flange bolt pass same structure number with bolt shrinkage pool core, and the projection core is used to form the flange bolt pass; Bolt convex core 15 and bolt shrinkage pool core are located mutually by projection and shrinkage pool, form flange structural core chamber; Described flange pipe core 5 is the two-piece type planform, forms core pipe fitting internal cavities mutually behind the mould assembly, and port is that upper and lower surface is a plane special construction shape, and it inserts mutually with flange bolt projection core 1 endoporus and cooperates, and forms the combining structure core; Described pipeline external form die cavity is made up of pipeline external mold die cavity 8 and flange core box die cavity 9, and flange core box die cavity 9 is used to lay the flange arrangement core box of group type, and pipeline external mold die cavity 8 is used for cooperatively interacting with flange pipe core 5, to form the pipeline configuration die cavity.
Casting equipment comprises that flange bolt projection core 1 mould, flange bolt shrinkage pool core 2 moulds, flange pipe core 5 moulds, pipeline external form mould are formed by combining, described flange bolt projection core 1 mould is used to form flange bolt projection core 1, flange bolt shrinkage pool core 2 moulds are used to form flange bolt shrinkage pool core 2, flange pipe core 5 moulds are used to form pipeline core 5, and pipeline external form mould is used to form pipeline external mold die cavity 8 and flange core box die cavity 9.
As shown in Figure 1, these 90 ° of flanges that the finished product pipe fitting is made by flange core core chamber 3, the flange bolt hole that the pipeline that flange pipe die cavity 4 is made, bolt convex core 15 are made is formed.
Figure 2 shows that this 90 ° of pipe fitting composite pouring process charts.
Fig. 3-7 is these 90 ° of pipe fitting composite pouring process structure key diagrams, and is specific as follows:
1) makes flange bolt convex core 1 mould, flange bolt shrinkage pool core 2 moulds, flange pipe core 5 moulds, pipeline external form mould, flange bolt projection core 1 mould is used to form flange bolt projection core 1, flange bolt shrinkage pool core 2 moulds are used to form flange bolt shrinkage pool core 2, flange pipe core 5 moulds are used to form pipeline core 5, and pipeline external form mould is used to form pipeline external mold die cavity 8 and flange core box die cavity 9.
2) be contained in above-mentioned flange bolt projection core 1 mould of making, flange bolt shrinkage pool core 2 moulds, flange pipe core 5 moulds on the hot box shoot core machine respectively, inject precoated sand and mould in 190~230 ℃, be incubated 60~120 seconds, solidifying molding sand 11 backs takes out, make corresponding flange bolt projection core 1 respectively, flange bolt shrinkage pool core 2, pipeline core 5, with pipeline external form mould Chong tubulation road external form die cavity (as shown in Figure 4) on molding sand 11, the external form die cavity is made up of pipeline external mold die cavity 8 (8) and flange core box die cavity 9.
3) flange bolt projection core 1 and flange bolt shrinkage pool core 2, by bolt convex core 15 and bolt convex core 15 jacks 14 location (as shown in Figure 3) that cooperatively interacts, the flange core core chamber 3 that the combination back forms is used to form pipe fitting finished product flange, the endoporus of flange bolt projection core 1 (as D to shown in) be planar structure up and down, it supports positioning action to 7 of pipeline core prints, for ease of the mo(u)ld bottom half mould assembling, the outer chamfering 16 of flange core box is made the circular arc chamfering shape; Pipeline core 5 is a hollow two-piece type combining structure, by with two pipeline cores, 5 mutual mould assemblys (shown in figure five), form pipeline core cavity 6, pipeline core print 7 at interior sand core structure, the end of pipeline core print 7 (as F to shown in) be the upper and lower surface planar structure, it is identical that its external form, size and pipeline core print endoporus support 13A; With pipeline core 5 core prints behind the group type, insert for ease of pipeline core print 7, pipeline core print endoporus supports 13 (as shown in Figure 6) and pipeline core print 7, and core print and core hole are with being 1 degree inclined plane shape, and inserting the flange core box and the pipeline core 5 that form is close-fitting sand core structure; With the core combining structure behind the group type (shown in figure six), put among external form pipe fitting die cavity and the flange core box die cavity 9 (as shown in Figure 4), wherein flange bolt projection core 1 closely cooperates with the flange arrangement core box external form of flange bolt shrinkage pool core 2 compositions and the inner chamber of flange core box die cavity 9, and the interior type of the external form of pipeline core 5 and pipeline external mold die cavity 8 forms flange pipeline type chamber 4.
4), form the finished product structure pipe fitting that need not following process by mould assembling and running gate system, cast, post processing are installed.
Wherein: described flange bolt projection core 1, flange bolt shrinkage pool core 2, flange pipe core 5, inject precoated sand by hot box shoot core machine, mould is incubated 60~120 seconds in 190~230 ℃, complete behind the curing molding sand 11; Described molding sand 11 is common clay sand or furan resin-sand; Described core mold is the antifriction metal (AFM) material, and pipeline external form mould is an aluminum alloy material.
Pipe fitting product by this explained hereafter, each inter-module closely cooperates and positioning and fixing, the pipe fitting product of production, and surface smoothness is good, morpheme dimensional accuracy height, so need not the continuous processing of later process, in manufacturing, utilize the outer core combination of type to carry out operation and prepare simultaneously, help multiple person cooperational production, improve production efficiency, saved production cost, started a kind of casting technique new model.

Claims (10)

1, a kind of flanged fitting composite pouring technology is characterized in that, comprising:
A, at first makes flange bolt convex core (1) mould, flange bolt shrinkage pool core (2) mould, flange pipe core (5) mould, pipeline external form mould;
B, secondly utilizes the mould production bolt convex core (15) for preparing shaping, bolt shrinkage pool core, flange pipe core (5) and goes up Chong tubulation road external form die cavity at molding sand (11);
C, then, bolt convex core (15) that will the preparation moulding, bolt shrinkage pool core, flange pipe core (5) be combination forming mutually, puts into the flange core box die cavity (9) of pipeline external form die cavity;
D, last by mould assembling and running gate system, cast, post processing are installed, forms the finished product structure pipe fitting that need not following process.
2, a kind of flanged fitting composite pouring technology according to claim 1 is characterized in that, described bolt convex core (15) contains and finished product flange bolt pass same structure number with bolt shrinkage pool core, and the projection core is used to form the flange bolt pass; Bolt convex core (15) and bolt shrinkage pool core are located mutually by projection and shrinkage pool, form flange structural core chamber.
3, a kind of flanged fitting composite pouring technology according to claim 1 and 2, it is characterized in that, described flange pipe core (5) is the two-piece type planform, form core pipe fitting internal cavities mutually behind the mould assembly, port is that upper and lower surface is a plane special construction shape, it inserts mutually with flange bolt projection core (1) endoporus and cooperates, and forms the combining structure core.
4, a kind of flanged fitting composite pouring technology according to claim 3, it is characterized in that, described pipeline external form die cavity is made up of pipeline external mold die cavity (8) and flange core box die cavity (9), flange core box die cavity (9) is used to lay the flange arrangement core box of group type, pipeline external mold die cavity (8) is used for cooperatively interacting with flange pipe core (5), to form the pipeline configuration die cavity.
5, a kind of flanged fitting composite pouring technology according to claim 4, it is characterized in that, described flange bolt projection core (1), flange bolt shrinkage pool core (2), flange pipe core (5), inject precoated sand by hot box shoot core machine, mould is in 190~230 ℃, be incubated 60~120 seconds, complete behind the curing molding sand (11).
6, a kind of flanged fitting composite pouring technology according to claim 5 is characterized in that: described combining structure is flange bolt projection core 1 and flange bolt shrinkage pool core (2) combination mutually, and two flange pipe cores (5) are combination mutually; Flange bolt projection core (1) endoporus and the combination mutually of pipeline core (5) head, each inter-module is located mutually and is closely cooperated, in case molten iron leaks; Flange core box after the combination does not have the gap and puts into flange core box die cavity (9), by last nowel mould assembling location, forms combined type cast model.
7, a kind of flanged fitting composite pouring technology according to claim 6, it is characterized in that: described molding sand (11) is common clay sand or furan resin-sand.
8, a kind of flanged fitting composite pouring technology according to claim 7, it is characterized in that: the pipeline core (5) that described two flange pipe cores (5) are formed mutually is interior hollow structure, it is the same structure size shape that pipeline core print (7) supports (13) with pipeline core print endoporus, with being 1 degree inclined plane shape.
9, a kind of flanged fitting composite pouring equipment, it is characterized in that, described casting equipment comprises flange bolt projection core (1) mould, flange bolt shrinkage pool core (2) mould, flange pipe core (5) mould, pipeline external form mould is formed by combining, described flange bolt projection core 1 mould is used to form flange bolt projection core (1), flange bolt shrinkage pool core (2) mould is used to form flange bolt shrinkage pool core (2), flange pipe core (5) mould is used to form pipeline core (5), and pipeline external form mould is used to form pipeline external mold die cavity (8) and flange core box die cavity (9).
10, a kind of flanged fitting composite pouring equipment according to claim 9 is characterized in that, described bolt convex core (15) contains and finished product flange bolt pass same structure number with bolt shrinkage pool core, and the projection core is used to form the flange bolt pass; Bolt convex core (15) and bolt shrinkage pool core are located mutually by projection and shrinkage pool, form flange structural core chamber; Described flange pipe core (5) is the two-piece type planform, form core pipe fitting internal cavities mutually behind the mould assembly, port is that upper and lower surface is a plane special construction shape, and it inserts mutually with flange bolt projection core (1) endoporus and cooperates, and forms the combining structure core; Described pipeline external form die cavity is made up of pipeline external mold die cavity (8) and flange core box die cavity (9), flange core box die cavity (9) is used to lay the flange arrangement core box of group type, pipeline external mold die cavity (8) is used for cooperatively interacting with flange pipe core (5), to form the pipeline configuration die cavity.
CN2008102339077A 2008-12-17 2008-12-17 Technique and equipment for pouring flanged fitting combination Expired - Fee Related CN101486071B (en)

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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102310164A (en) * 2011-09-14 2012-01-11 西峡县内燃机进排气管有限责任公司 Sand unloading technology of sand core of precoated sand
CN102328031A (en) * 2011-10-19 2012-01-25 江苏力源金河铸造有限公司 Sand ejection process for sand core of back cover casting
CN102397990A (en) * 2011-05-19 2012-04-04 大连金河铸造有限公司 Bolt hole sand mold positioning process
CN102658358A (en) * 2012-05-24 2012-09-12 芜湖市金贸流体科技股份有限公司 Novel flange presser foot elbow group core manufacturing process
CN104226908A (en) * 2014-08-25 2014-12-24 芜湖市金贸流体科技股份有限公司 Novel elbow pipe fitting core assembly and manufacturing technique thereof
CN104368759A (en) * 2014-11-17 2015-02-25 保定风帆精密铸造制品有限公司 Elbow precise casting mold
CN110919947A (en) * 2019-12-31 2020-03-27 南京白港复合材料有限公司 Internal pressure resistant flange and production process thereof
CN111055413A (en) * 2019-12-31 2020-04-24 南京白港复合材料有限公司 Anti-torque transmission shaft and production process thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4799533A (en) * 1986-06-20 1989-01-24 Steel Casting Engineering, Ltd. Horizontal continuous casting mold
CN101020226A (en) * 2007-03-15 2007-08-22 繁昌县金贸铸造有限责任公司 Flange casting process
CN201008940Y (en) * 2007-03-15 2008-01-23 繁昌县金贸铸造有限责任公司 Cast forming mould of flange casting elements

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102397990A (en) * 2011-05-19 2012-04-04 大连金河铸造有限公司 Bolt hole sand mold positioning process
CN102310164A (en) * 2011-09-14 2012-01-11 西峡县内燃机进排气管有限责任公司 Sand unloading technology of sand core of precoated sand
CN102328031A (en) * 2011-10-19 2012-01-25 江苏力源金河铸造有限公司 Sand ejection process for sand core of back cover casting
CN102658358A (en) * 2012-05-24 2012-09-12 芜湖市金贸流体科技股份有限公司 Novel flange presser foot elbow group core manufacturing process
CN104226908A (en) * 2014-08-25 2014-12-24 芜湖市金贸流体科技股份有限公司 Novel elbow pipe fitting core assembly and manufacturing technique thereof
CN104368759A (en) * 2014-11-17 2015-02-25 保定风帆精密铸造制品有限公司 Elbow precise casting mold
CN104368759B (en) * 2014-11-17 2017-01-11 保定风帆精密铸造制品有限公司 Elbow precise casting mold
CN110919947A (en) * 2019-12-31 2020-03-27 南京白港复合材料有限公司 Internal pressure resistant flange and production process thereof
CN111055413A (en) * 2019-12-31 2020-04-24 南京白港复合材料有限公司 Anti-torque transmission shaft and production process thereof

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