CN103100669B - A kind of with flange casting bolt hole gate valve body composite pouring technique - Google Patents

A kind of with flange casting bolt hole gate valve body composite pouring technique Download PDF

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Publication number
CN103100669B
CN103100669B CN201310058463.9A CN201310058463A CN103100669B CN 103100669 B CN103100669 B CN 103100669B CN 201310058463 A CN201310058463 A CN 201310058463A CN 103100669 B CN103100669 B CN 103100669B
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CN
China
Prior art keywords
core
valve
casing
flange
sand
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CN201310058463.9A
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Chinese (zh)
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CN103100669A (en
Inventor
孙述全
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芜湖市金贸流体科技股份有限公司
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Publication of CN103100669A publication Critical patent/CN103100669A/en
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Publication of CN103100669B publication Critical patent/CN103100669B/en

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Abstract

The invention discloses a kind of with flange casting bolt hole gate valve body composite pouring technique, the steps include: first to manufacture the outer upper casing core of valve body, valve body outer lower casing core, flange core, inner casing core, water a mould, the outer upper casing core mold of valve body; Above-mentioned mould is contained on hot box shoot core machine respectively, inject precoated sand and mould in 190 ~ 230 DEG C, be incubated 60 ~ 120 seconds, take out after solidification molding sand, make the outer upper casing core of relative valve body, valve body outer lower casing core, flange core, inner casing core respectively, water cylinder; Finally get above-mentioned core, form valve body finished product through respective combination, cast, post processing.By the valve body of above-mentioned explained hereafter, each inter-module closely cooperates and locates fixing, surface smoothness is good, and morpheme dimensional accuracy is high, therefore without the need to the continuous processing of later process, simultaneously in manufacturing, utilize the outer core combination of type to carry out operation preparation, be conducive to multiple person cooperational and produce, improve production efficiency, save production cost, start a kind of casting technique new model.

Description

A kind of with flange casting bolt hole gate valve body composite pouring technique
Technical field
What the present invention relates to is valve body casting craft, and what be specifically related to is a kind of directly with flange casting bolt hole gate valve body composite pouring technique.
Background technology
The general pouring technology of current gate valve body, at least there is secondary structure mold, the secondary core mould forming body cavity forming valve body external form, valve body profile mould forms the exterior contour of valve body, valve body core box forms the inner chamber of valve body, the valve body moulding finished product flange made like this do not have bolt hole, need these bolts hole to get out, not only affect production capacity, the precision of bolt hole cannot ensure simultaneously, or there is a secondary structure mold forming valve body external form, the one secondary core mould forming body cavity, one secondary formation flange bolt hole convex cylinder core mold, profile mould forms the exterior contour of valve body, core box forms the endoporus of valve body, flange convex cylinder core is enclosed within valve body core, it combines mutually with the exterior contour of valve body, form valve body structure die cavity, by the valve body moulding of this explained hereafter, although flange bolt hole is once-forming, decrease postorder machining, improve the bolt hole accuracy of manufacture, but because of valve body structure sand mold very easily stamp under the effect of molten iron, simultaneously because flange convex cylinder core is enclosed within valve body core, therefore during mould assembling, be difficult to accurate location, therefore be difficult to form batch production benefit.
Summary of the invention
For solving the deficiency in prior art, the object of this invention is to provide a kind of with flange casting bolt hole gate valve body composite pouring technique, combined by the core of different structure, improve product quality and production efficiency, save production cost, simplify the manufacturing technology requirement to product.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of with flange casting bolt hole gate valve body composite pouring technique, it is characterized in that, its method step is as follows:
(1) first produce the outer upper casing core mold of valve body, valve body outer lower casing core mold, flange core mold, inner casing core mold and water a mould;
(2) by outer for the above-mentioned valve body made upper casing core mold, valve body outer lower casing core mold, flange core, inner casing core mold, water a mould and be contained in respectively on hot box shoot core machine, inject precoated sand and mould in 190 ~ 230 DEG C, be incubated 60 ~ 120 seconds, take out after solidification molding sand, make the outer upper casing core of relative valve body, valve body outer lower casing core, flange core, inner casing core respectively and water cylinder;
(3) above-mentioned flange core, flange projection core, flange core endoporus, flange projection core is configured for forming valve body finished product flange bolt hole; .
Described inner casing core is provided with inner casing sand core head; The outer upper casing core die cavity of valve body and flange core die cavity and the outer upper casing core die cavity of valve body is provided with in the outer upper casing core of described valve body;
The outer lower casing core die cavity of valve body and flange core die cavity is provided with in the outer lower casing core of described valve body;
(4) get inner casing core and two panels flange core, divided by two panels flange core and be enclosed within inner casing sand core head from inner casing core two ends, wherein flange projection core interior inner side respectively, forms inner casing core and flange sand core combination structure;
(5) inner casing core in above-mentioned steps (4) is got and flange sand core combination structure puts into the outer lower casing core of valve body; Wherein, described inner casing core puts into the outer lower casing core die cavity of valve body, and two panels flange core is put into flange core die cavity and formed sand core combination structure under inner casing core and shell;
(6) the inner casing core in above-mentioned steps (5) is superposed with the outer upper casing core of sand core combination structure under shell and upper cover upper valve body, to form under inner casing core and shell sand core combination structure in sand core combination structure and shell, i.e. valve body composite pouring structure, described valve body composite pouring vibrational power flow has valve body to pour into a mould die cavity;
(7) under the inner casing core in described step (5) and shell, sand core combination structure is installed and water cylinder, fastening by described valve body composite pouring structure external form iron wire, directly cast, post processing, form the finished product structure valve body without the need to following process.
The present invention is by the valve body of above-mentioned explained hereafter, each inter-module closely cooperates and locates fixing, the product of production, and surface smoothness is good, morpheme dimensional accuracy is high, therefore without the need to the continuous processing of later process, simultaneously in manufacturing, utilize the outer core combination of type to carry out operation preparation, be conducive to multiple person cooperational to produce, improve production efficiency, saved production cost, start a kind of casting technique new model; And combined by the core of different structure, improve product quality and production efficiency, saved production cost, simplify the manufacturing technology requirement to product.
Accompanying drawing explanation
Fig. 1 is valve body casting forming process flow chart of the present invention;
Fig. 2 is valve body finished product structure schematic diagram of the present invention;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is valve body composite pouring structural representation of the present invention;
Fig. 5 is the top view of Fig. 4;
Fig. 6 is the left view of Fig. 4;
Fig. 7 is valve body composite pouring flange sand core structure schematic diagram of the present invention;
Fig. 8 is the sectional view of Fig. 7;
Fig. 9 is valve body composite pouring inner casing sand core structure schematic diagram;
Figure 10 is the outer upper casing sand core structure schematic diagram of valve body composite pouring;
Figure 11 is the outer lower casing sand core structure schematic diagram of valve body composite pouring;
Figure 12 is inner casing core and flange sand core combination structure figure;
Figure 13 is sand core combination structure figure under inner casing core and shell;
Figure 14 is sand core combination structure figure on sand core combination structure and shell under inner casing core and shell;
In figure: 1-is containing valve flange bolt hole, and the outer upper casing core of 2-valve body, the outer lower casing core of 3-valve body, 4-flange core, 5-inner casing core, 6-valve body cast die cavity, 7-water cylinder.
Detailed description of the invention
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with detailed description of the invention, setting forth the present invention further.
See Fig. 1 to Figure 14, the present invention is combined by the core of different structure, and provides a kind of with flange casting bolt hole gate valve body composite pouring technique, improves product quality and production efficiency, save production cost, simplify the manufacturing technology requirement to product; Its concrete technology is as follows:
(1) manufacture the outer upper casing core of valve body, valve body outer lower casing core, flange core, inner casing core, water a mould, the outer upper casing core mold of valve body is for the formation of the outer upper casing core 2 of valve body, the outer lower casing core mold of valve body is for the formation of the outer lower casing core 3 of valve body, flange core mold is for the formation of flange core 4, inner casing core mold, for the formation of inner casing core 5, waters a mould for the formation of watering cylinder 7.
(2) by outer for the above-mentioned valve body made upper casing core, valve body outer lower casing core, flange core, inner casing core, water a mould and be contained in respectively on hot box shoot core machine, inject precoated sand and mould in 190 ~ 230 DEG C, be incubated 60 ~ 120 seconds, take out after solidification molding sand, make the outer upper casing core 2 of relative valve body, valve body outer lower casing core 3, flange core 4, inner casing core 5 respectively, water cylinder 7.
3) above-mentioned flange core is as Fig. 7 and Fig. 8, and containing flange projection core 4-1, flange core endoporus 4-2, flange projection core 4-1 is for the formation of valve body finished product flange bolt hole.
Above-mentioned inner casing core 5, containing inner casing sand core head 5-1.
The outer upper casing core 2 of above-mentioned valve body, containing the outer upper casing core die cavity of 2-1 valve body, 2-2 flange core die cavity; The outer upper casing core die cavity of valve body.
The outer lower casing core 3 of above-mentioned valve body, containing the outer lower casing core die cavity of 3-1 valve body, 3-2 flange core die cavity.
(4) get inner casing core 5 and two panels flange core 4, two panels flange core 4 points is enclosed within inner casing sand core head 5-1 from inner casing core 5 two ends, wherein containing flange projection core interior inner side 4-1 respectively.As Figure 12 inner casing core and flange sand core combination structure figure.
5) get above-mentioned as Figure 13 inner casing core and flange sand core combination structure and the outer lower casing core 3 of valve body, valve body lower casing core 3 outward will be put into as Figure 12 inner casing core and flange sand core combination structure figure.Wherein inner casing core (5) puts into the outer lower casing core die cavity of 3-1 valve body, and two panels flange core 4 puts into flange core die cavity 3-2.Figure 13 is sand core combination structure figure under inner casing core and shell.
(6) as Figure 13, get sand core combination structure and the outer upper casing core 2 of valve body under above-mentioned shell core and shell, will as Figure 13 inner casing core and shell under the outer upper casing core 2 of sand core combination structure upper cover upper valve body, to form under inner casing core and shell sand core combination structure (as Figure 14) in sand core combination structure and shell, its composition structure is valve body composite pouring structural representation as Fig. 4, includes valve body cast die cavity 6.
(7) Figure 14 under inner casing core and shell, sand core combination structure is installed to water cylinder 7, by fastening (rise after preventing high temperature liquid iron from pouring into a mould type) such as valve body composite pouring structure (as Fig. 4) external form iron wires, direct cast, post processing, form the finished product structure valve body without the need to following process.
Wherein: described core material is injects precoated sand by hot box shoot core machine, mould, in 190 ~ 230 DEG C, is incubated 60 ~ 120 seconds, completes after solidification molding sand; Described core mold is wear-resistant aluminum alloy material.
By above-described embodiment, integrated artistic step of the present invention is: first manufacture the outer upper casing core of valve body, valve body outer lower casing core, flange core, inner casing core, water a mould, the outer upper casing core mold of valve body; Then, above-mentioned mould is contained on hot box shoot core machine respectively, inject precoated sand and mould in 190 ~ 230 DEG C, be incubated 60 ~ 120 seconds, take out after solidification molding sand, make the outer upper casing core of relative valve body, valve body outer lower casing core, flange core, inner casing core respectively, water cylinder; Finally get above-mentioned core, form valve body finished product through respective combination, cast, post processing.
The present invention is by the valve body of above-mentioned explained hereafter, each inter-module closely cooperates and locates fixing, the product of production, and surface smoothness is good, morpheme dimensional accuracy is high, therefore without the need to the continuous processing of later process, simultaneously in manufacturing, utilize the outer core combination of type to carry out operation preparation, be conducive to multiple person cooperational to produce, improve production efficiency, saved production cost, start a kind of casting technique new model; And combined by the core of different structure, improve product quality and production efficiency, saved production cost, simplify the manufacturing technology requirement to product.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (1)

1., with a flange casting bolt hole gate valve body composite pouring technique, it is characterized in that, its processing step is as follows:
(1) first produce the outer upper casing core mold of valve body, valve body outer lower casing core mold, flange core mold, inner casing core mold and water a mould;
(2) by outer for the above-mentioned valve body made upper casing core mold, valve body outer lower casing core mold, flange core mold, inner casing core mold, water a mould and be contained in respectively on hot box shoot core machine, inject precoated sand and mould in 190 ~ 230 DEG C, be incubated 60 ~ 120 seconds, take out after solidification molding sand, make the outer upper casing core of relative valve body, valve body outer lower casing core, flange core, inner casing core respectively and water cylinder;
(3) above-mentioned flange core is containing flange projection core, flange core endoporus, and flange projection core is for the formation of valve body finished product flange bolt hole;
Described inner casing core is provided with inner casing sand core head; The outer upper casing core die cavity of valve body and flange core die cavity is provided with in the outer upper casing core of described valve body;
The outer lower casing core die cavity of valve body and flange core die cavity is provided with in the outer lower casing core of described valve body;
(4) get inner casing core and two panels flange core, be enclosed within inner casing sand core head from inner casing core two ends respectively by two panels flange core, wherein flange projection core is respectively towards inner side, forms inner casing core and flange sand core combination structure;
(5) inner casing core in above-mentioned steps (4) is got and flange sand core combination structure puts into the outer lower casing core of valve body; Wherein, described inner casing core puts into the outer lower casing core die cavity of valve body, and two panels flange core puts into flange core die cavity, forms sand core combination structure under inner casing core and shell;
(6) superposed with the outer upper casing core of sand core combination structure under shell and valve body by the inner casing core in above-mentioned steps (5), form valve body composite pouring structure, described valve body composite pouring vibrational power flow has valve body to pour into a mould die cavity;
(7) under the inner casing core in described step (5) and shell, sand core combination structure is installed and water cylinder, described valve body composite pouring structure external form iron wire is fastening, and directly cast, post processing, form the finished product structure valve body without the need to following process.
CN201310058463.9A 2013-02-25 2013-02-25 A kind of with flange casting bolt hole gate valve body composite pouring technique CN103100669B (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103286276B (en) * 2013-05-21 2015-01-21 佛山市南海区巨子电机配件有限公司 Technology for casting motor shell
CN103322294B (en) * 2013-07-09 2015-10-28 芜湖市金贸流体科技股份有限公司 A kind of inserted spool and manufacturing process thereof
CN103706764B (en) * 2013-12-17 2015-06-17 四川制动科技股份有限公司 Inner cavity sand core structure of brake valve of railway vehicle
CN104338899A (en) * 2014-10-21 2015-02-11 黄旭伟 Stainless steel sand mold casting process
CN106853511A (en) * 2017-01-06 2017-06-16 芜湖市金贸流体科技股份有限公司 The mode of production of high-accuracy gate valve plate sealing surface

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN101259520A (en) * 2007-12-22 2008-09-10 繁昌县金贸铸造有限责任公司 Cast form technique for pipe casting without swaging die and core box
CN101920315A (en) * 2010-09-07 2010-12-22 江苏金石铸锻有限公司 Casting method of ZG1Cr13 of PFFAP35/52 valve body
EP2447088B1 (en) * 2010-11-01 2012-12-26 Honda Motor Co., Ltd. Hub manufacturing method and wheel provided with the hub

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN101259520A (en) * 2007-12-22 2008-09-10 繁昌县金贸铸造有限责任公司 Cast form technique for pipe casting without swaging die and core box
CN101920315A (en) * 2010-09-07 2010-12-22 江苏金石铸锻有限公司 Casting method of ZG1Cr13 of PFFAP35/52 valve body
EP2447088B1 (en) * 2010-11-01 2012-12-26 Honda Motor Co., Ltd. Hub manufacturing method and wheel provided with the hub

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