CN106825426B - A kind of cold-box core blower molding sand urges amine curing method - Google Patents

A kind of cold-box core blower molding sand urges amine curing method Download PDF

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Publication number
CN106825426B
CN106825426B CN201710072589.XA CN201710072589A CN106825426B CN 106825426 B CN106825426 B CN 106825426B CN 201710072589 A CN201710072589 A CN 201710072589A CN 106825426 B CN106825426 B CN 106825426B
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China
Prior art keywords
mold
molding sand
triethylamine
valve
cold
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CN201710072589.XA
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CN106825426A (en
Inventor
李金平
张耀忠
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Foshan Hengxue Technology Service Co Ltd
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Foshan Hengxue Technology Service Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/12Treating moulds or cores, e.g. drying, hardening
    • B22C9/123Gas-hardening

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

The invention discloses a kind of cold-box core blower molding sand to urge amine curing method, and including molding, vacuumizing, inflating, being vented, air guide, purification style, die sinking carry out.The method of the present invention is on the basis of conventional method, add recovery method, pass through recycling step, the Triethylamine gas for having imported catalysis can be recycled, then in order to avoid remaining gas is released, later stage absorbs corresponding gas importing clarifier, can reduce the dosage of cleanser inside clarifier, reduce cost recovery.

Description

A kind of cold-box core blower molding sand urges amine curing method
Technical field
The present invention relates to molding sand casting field, more particularly to a kind of cold-box core blower molding sand urges amine curing method.
Background technology
In foundry machinery field, cold core machine core-making technique is widely used efficient core-making technique, cold core mechanism core side Method is that the resin sand being blended is injected in mold, makes its curing by being blown into triethylamine.In this chemical reaction, due to three second Amine is only used as catalyzed gas, will not generate a large amount of composition losses.Since triethylamine is toxic gas, traditional mode of production is general All Triethylamine gas is passed directly on cold core machine mold, and the three of discharge is absorbed in mold other end connection device for absorbing tail gas Ethamine;Triethylamine is undoubtedly largely lost;It can be completed in addition, triethylamine only need to be contacted based on molding sand coremaking reaction, it is not necessary to it is required that Triethylamine gas is largely rested in reactor.
It is general to be introduced directly into using by triethylamine to mould inside in traditional catalytic way, clarifier is directly connected afterwards Triethylamine gas is catalyzed, but a large amount of triethylamine after-purification agent can be generally lost in the catalytic way, undoubtedly waste of resource.
Invention content
The technical problem to be solved by the present invention is to:In view of the above shortcomings of the prior art, a kind of cold-box core blower is provided Molding sand urges amine curing method.
The present invention solve its technical problem solution be:A kind of cold-box core blower molding sand urges amine curing method, It is characterized in that, includes the following steps:
(1)After core shooter penetrates sand, molding sand mold and lower mold are subjected to molding processing, obtain in fill molding sand mold;
(2)By step(1)Molding sand mold is filled in described and connects vacuum tank A, opens the valve A on vacuum tank A, reduces mould Has air pressure inside;
(3)Close step(2)The valve A, by step(2)Molding sand mold is filled in described and connects triethylamine tank B, is beaten The valve B on triethylamine tank B is opened, triethylamine is imported into mould inside;
(4)Room temperature is stood, and closes valve B, after mold connected into vacuum tank C, the valve C on vacuum tank C is opened, by mold Internal triethylamine is exported to vacuum tank C;
(5)Close step(4)Air tank D is connected in mold one end by the valve C, and the other end is connected clarifier E, beaten Air tank D is opened, it will be in triethylamine export mold to clarifier E remaining in mold;
(6)All valves are closed, open upper and lower mold.
As one of preferred technical solution, which is characterized in that the step(4)The time that middle room temperature is stood is 0.1 - 600 seconds.
As one of preferred technical solution, which is characterized in that the step(5)In clarifier inside by being provided with Phosphoric acid solution.
The beneficial effects of the invention are as follows:The method of the present invention adds recovery method on the basis of conventional method, by returning Step is received, the Triethylamine gas for having imported catalysis can be recycled, then in order to avoid remaining gas is released, the later stage is by phase Gas is answered to import clarifier to be absorbed, the dosage of cleanser inside clarifier can be reduced, reduce cost recovery.
Specific embodiment
The technique effect of the design of the present invention, concrete structure and generation is carried out below with reference to embodiment clear, complete Ground describes, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is the one of the present invention Section Example rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art is not paying creativeness The other embodiment obtained under the premise of labour, belongs to the scope of protection of the invention.
Embodiment:A kind of cold-box core blower molding sand urges amine curing method, which is characterized in that includes the following steps:
(1)After core shooter penetrates sand, molding sand mold and lower mold are subjected to molding processing, obtain in fill molding sand mold;
(2)By step(1)Molding sand mold is filled in described and connects vacuum tank A, opens the valve A on vacuum tank A, reduces mould Has air pressure inside;
(3)Close step(2)The valve A, by step(2)Molding sand mold is filled in described and connects triethylamine tank B, is beaten The valve B on triethylamine tank B is opened, triethylamine is imported into mould inside;
(4)Room temperature is stood, and closes valve B, after mold connected into vacuum tank C, the valve C on vacuum tank C is opened, by mold Internal triethylamine is exported to vacuum tank C;
(5)Close step(4)Air tank D is connected in mold one end by the valve C, and the other end is connected clarifier E, beaten Air tank D is opened, it will be in triethylamine export mold to clarifier E remaining in mold;
(6)All valves are closed, open upper and lower mold.
As one of preferred embodiment, which is characterized in that the step(4)The time that middle room temperature is stood is 9 seconds.
As one of preferred embodiment, which is characterized in that the step(5)In clarifier inside by being provided with Phosphoric acid solution.
The better embodiment of the present invention is illustrated, but the invention is not limited to the implementation above Example, those skilled in the art can also make various equivalent modifications under the premise of without prejudice to spirit of the invention or replace It changes, these equivalent modifications or replacement are all contained in the application claim limited range.

Claims (3)

1. a kind of cold-box core blower molding sand urges amine curing method, which is characterized in that includes the following steps:
(1)After core shooter penetrates sand, molding sand mold and lower mold are subjected to molding processing, obtain in fill molding sand mold;
(2)By step(1)Molding sand mold is filled in described and connects vacuum tank A, opens the valve A on vacuum tank A, is reduced in mold Portion's air pressure;
(3)Close step(2)The valve A, by step(2)Molding sand mold is filled in described and connects triethylamine tank B, opens three Valve B on ethamine tank B, mould inside is imported by triethylamine;
(4)Room temperature is stood, and closes valve B, after mold connected into vacuum tank C, the valve C on vacuum tank C is opened, by mould inside Triethylamine is exported to vacuum tank C;
(5)Close step(4)Air tank D is connected in mold one end by the valve C, and the other end connects clarifier E, opens empty Gas tank D, will be in triethylamine export mold to clarifier E remaining in mold;
(6)All valves are closed, open upper and lower mold.
2. cold-box core blower molding sand according to claim 1 urges amine curing method, which is characterized in that the step (4)The time that middle room temperature is stood is 0.1-600 second.
3. cold-box core blower molding sand according to claim 1 urges amine curing method, which is characterized in that the step (5)In clarifier be internally provided with phosphoric acid solution.
CN201710072589.XA 2017-02-10 2017-02-10 A kind of cold-box core blower molding sand urges amine curing method Active CN106825426B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710072589.XA CN106825426B (en) 2017-02-10 2017-02-10 A kind of cold-box core blower molding sand urges amine curing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710072589.XA CN106825426B (en) 2017-02-10 2017-02-10 A kind of cold-box core blower molding sand urges amine curing method

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Publication Number Publication Date
CN106825426A CN106825426A (en) 2017-06-13
CN106825426B true CN106825426B (en) 2018-06-26

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Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4416571C1 (en) * 1994-05-11 1995-12-07 Eberhard Dr Giebeler Process and device for the recovery of amines from amine washing solutions and the use of special residues that can be obtained according to the process in the production of cement or as a fertilizer component
CN102189229B (en) * 2011-03-23 2012-10-31 苏州明志科技有限公司 Method and device for manufacturing cold core by using pressure difference
CN102430723B (en) * 2011-12-26 2013-04-24 冯新林 Triethylamine gas producing and recycling system
CN103657327B (en) * 2013-12-05 2015-06-17 山东建筑大学 Triethylamine cold-box core making tail gas treatment and amine recovery method, and apparatus thereof
CN105127377A (en) * 2015-06-29 2015-12-09 第一拖拉机股份有限公司 Amine adding apparatus of triethylamine aerosol generator for laboratory and amine adding method thereof
CN104959543A (en) * 2015-07-30 2015-10-07 苏州明志科技有限公司 Core making process and core making device of triethylamine cold box
CN205551405U (en) * 2016-04-25 2016-09-07 天津凯星科技有限公司 Utilize device of vacuum system to triethylamine cold core box coremaking tail gas recycle
CN106238671A (en) * 2016-09-04 2016-12-21 佛山市恒学科技服务有限公司 A kind of core shooter molding sand molding environment-protecting is catalyzed retracting device

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