CN1792498A - Methd for preparing core of hollow ceramic - Google Patents

Methd for preparing core of hollow ceramic Download PDF

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Publication number
CN1792498A
CN1792498A CN 200510047854 CN200510047854A CN1792498A CN 1792498 A CN1792498 A CN 1792498A CN 200510047854 CN200510047854 CN 200510047854 CN 200510047854 A CN200510047854 A CN 200510047854A CN 1792498 A CN1792498 A CN 1792498A
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China
Prior art keywords
core
water
soluble
hollow
ceramic core
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CN 200510047854
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Chinese (zh)
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CN100333857C (en
Inventor
韩绍娟
许壮志
程涛
张立健
钱伟
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LIAONING PROV ACADEMY OF LIGHT INDUSTRY SCIENCES
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LIAONING PROV ACADEMY OF LIGHT INDUSTRY SCIENCES
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Priority to CNB2005100478546A priority Critical patent/CN100333857C/en
Publication of CN1792498A publication Critical patent/CN1792498A/en
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Publication of CN100333857C publication Critical patent/CN100333857C/en
Expired - Fee Related legal-status Critical Current
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Abstract

A process for preparing the moulding hollow ceramic core includes such steps as preparing a water-soluble moulding core, fixing it in the mould of moulding ceramic core, pressing to form a wax part wrapping the water-soluble core, dissolving the moulding core by water, filling filler in the hollow wax part, sintering and removing filler.

Description

The preparation method of hollow ceramic core
Technical field: the present invention relates to a kind of preparation method of hollow ceramic core, this hollow ceramic core is used for the hot investment casting manufacture field.
Background technology: the ceramic core goods are the crucial adaptors that are used for forming the precision casting cavity, after the foundry goods casting is finished, by machinery or chemolysis ceramic core are removed from foundry goods.Traditional ceramic core mostly is the solid ceramic core, bigger core is very thick and heavy, easily make the wax spare after the combination produce distortion, and then influence the dimensional accuracy of foundry goods, and the depoling difficulty, even some hollow cores are arranged, it is hollow also to be foolproof shape, and the core wall unevenness is even, easily produces defectives such as distortion and cracking.
Summary of the invention: purpose of the present invention is exactly at above-mentioned the deficiencies in the prior art, and a kind of preparation method of hollow ceramic core is provided.Can produce various hollow ceramic cores in batches by this method.For achieving the above object, the present invention adopts following technical proposals: make water-soluble core with water-soluble material, again water-soluble core is fixed in the ceramic core mould, compacting is wrapped in the wax spare of water-soluble core, water or the water-soluble core of acidifying water stripping, fill filler in hollow wax spare, carry out sintering by solid core again, peace and quiet filler forms the hollow ceramic core behind the sintering.Described water-soluble material can adopt urea, polyethylene glycol, sodium acid carbonate, ammonium sulfate, boric acid or water soluble wax.
The hollow ceramic core that adopts the present invention to produce, its core wall thickness is even and in light weight, is difficult for making wax spare to produce defectives such as distortion, cracking; Be easy to depoling, need not chemical depoling, just can remove mechanically totally, avoided the damage of chemical attack, and saved the depoling time, reduced the cost of manufacture of core metal casting.
The specific embodiment:
Embodiment one
The preparation method of hollow ceramic core of the present invention realizes by following processing step:
(1) make the mould of core cavity shape: the size that needs are made hollow ceramic core is inside attenuate 3mm from the surface, at the core print position of core lengthening 5-15mm, makes mould by this size;
(2) make the water-soluble core of hollow parts: method one, urea and sugar by weight percentage: urea 85-100%, sugared 0-15% mixes, and is heated to 130 ℃, injects above-mentioned mould, is preheating to 60 ℃, solidifies depanning afterwards, forms water-soluble core; Method two is pressed into mould to water soluble wax by following parameter, forms water-soluble core: 130 ℃ of material temperature, and pressure 1-5Mpa, be 1-5 second inject time, the dwell time is 10-30 second, mold temperature 30-40 ℃;
(3) form hollow wax spare: above-mentioned water-soluble core is fixed in the mould of ceramic core, on the ceramic core make-up machine, can be made into the ceramic core that is wrapped in above-mentioned water-soluble core by following specification requirement, 90-120 ℃ of material cylinder temperature, 90-100 ℃ of nozzle temperature, pressure 4-20Mpa, inject time are 2-10 second, the dwell time is 10-30 second, mold temperature 30-40 ℃, then ceramic core is immersed in the water,, form hollow ceramic core wax spare water-soluble core stripping;
(4) sintering of hollow core: filler (Al is filled in the inside that forms hollow ceramic core wax spare 2O 3), the saggar of packing into is filled with filler all around, and jolt ramming is carried out sintering by solid member technology again, and the clean filler of cleaning can obtain hollow core behind the sintering.

Claims (3)

1, a kind of preparation method of hollow ceramic core, it is characterized in that: it is to make water-soluble core with water-soluble material, again water-soluble core is fixed in the ceramic core mould, compacting is wrapped in the wax spare of water-soluble core, water or the water-soluble core of acidifying water stripping, fill filler in hollow wax spare, carry out sintering by solid core again, peace and quiet filler forms the hollow ceramic core behind the sintering.
2, the preparation method of hollow ceramic core as claimed in claim 1 is characterized in that: described water-soluble material can adopt urea, polyethylene glycol, sodium acid carbonate, ammonium sulfate, boric acid or water soluble wax.
3, the preparation method of hollow ceramic core as claimed in claim 1 or 2 is characterized in that described method realizes by following processing step:
(1) make the mould of core cavity shape: the size that needs are made hollow ceramic core is inside attenuate 3mm from the surface, at the core print position of core lengthening 5-15mm, makes mould by this size;
(2) make the water-soluble core of hollow parts: method one, urea and sugar by weight percentage: urea 85-100%, sugared 0-15% mixes, and is heated to 130 ℃, injects above-mentioned mould, is preheating to 60 ℃, solidifies depanning afterwards, forms water-soluble core; Method two is pressed into mould to water soluble wax by following specification requirement and forms water-soluble core, 130 ℃ of its material temperature, and pressure 1-5Mpa, be 1-5 second inject time, the dwell time is 10-30 second, mold temperature 30-40 ℃;
(3) form hollow wax spare: above-mentioned water-soluble core is fixed in the mould of ceramic core, on the ceramic core make-up machine, can be made into the ceramic core that is wrapped in above-mentioned water-soluble core by following specification requirement, 90-120 ℃ of material cylinder temperature, 90-100 ℃ of nozzle temperature, pressure 4-20Mpa, inject time are 2-10 second, the dwell time is 10-30 second, mold temperature 30-40 ℃, then ceramic core is immersed in the water,, form hollow ceramic core wax spare water-soluble core stripping;
(4) sintering of hollow core: filler is filled in the inside that forms hollow ceramic core wax spare, and the saggar of packing into is filled with filler all around, and jolt ramming is carried out sintering by solid member technology again, and the clean filler of cleaning can obtain hollow core behind the sintering.
CNB2005100478546A 2005-11-29 2005-11-29 Methd for preparing core of hollow ceramic Expired - Fee Related CN100333857C (en)

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CN100333857C CN100333857C (en) 2007-08-29

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100402461C (en) * 2006-12-08 2008-07-16 辽宁省轻工科学研究院 Magnesia ceramic core and its injection moulding process
CN102211144A (en) * 2011-06-08 2011-10-12 安徽应流铸业有限公司 Casting method of core of casting mould
CN102896278A (en) * 2012-09-06 2013-01-30 沈阳黎明航空发动机(集团)有限责任公司 Preparation method for hollow mold core having high temperature deformability and removability
CN103017179A (en) * 2011-09-28 2013-04-03 江苏大自然电器标牌厂 Acoustic energy power amplifier
CN103433431A (en) * 2013-09-06 2013-12-11 安徽应流集团霍山铸造有限公司 Ceramic core for inner cavity of cylinder cover
CN104014737A (en) * 2014-05-19 2014-09-03 沈阳工业大学 Preparation technology for complex ceramic core with embedded cavity structure
CN104043770A (en) * 2014-06-10 2014-09-17 中国科学院金属研究所 Packing powder for sintering ceramic core
CN104353790A (en) * 2014-11-12 2015-02-18 中船重工西安东仪科工集团有限公司 Preparation method of closed spatial curved surface structure casting core
CN105127373A (en) * 2015-09-10 2015-12-09 上海大学 Manufacturing method of hollow ceramic core for double-wall hollow blade
CN105855472A (en) * 2016-04-26 2016-08-17 东方电气集团东方汽轮机有限公司 Manufacturing method for hollow ceramic core
CN105983658A (en) * 2015-08-18 2016-10-05 中国科学院金属研究所 Preparation method of model and mould case for precision casting of Ti3Al alloy guide vane inner ring
CN106694809A (en) * 2016-12-01 2017-05-24 海南科技职业学院 Method for preparing water soluble core mold of precise device
CN106827425A (en) * 2017-01-20 2017-06-13 埃维柯塑料科技（安徽）有限公司 A kind of PA Plastic valves Shooting Technique
CN106944592A (en) * 2017-04-28 2017-07-14 鹰普航空零部件（无锡）有限公司 Water-soluble wax and Water-soluble ceramic core combine the application in aluminium alloy model casting
CN107052260A (en) * 2017-05-27 2017-08-18 鹰普航空零部件（无锡）有限公司 Application of the ceramic core bag wax positioning process in model casting
CN107282894A (en) * 2017-06-21 2017-10-24 河南梦祥纯银制品有限公司 A kind of hollow hollow out jewellery are integrally formed processing method
CN108484178A (en) * 2018-03-01 2018-09-04 辽宁航安特铸材料有限公司 A kind of preparation method and applications of Water-soluble ceramic core plasticizer
CN109702209A (en) * 2019-01-18 2019-05-03 佛山隆易科技有限公司 A kind of manufacture contains the manufacturing method of profile-followed water route part
CN110072648A (en) * 2016-12-13 2019-07-30 通用电气公司 For making the integration casting core shell structure with printing tube of cast member
CN110711845A (en) * 2019-10-31 2020-01-21 中国航发南方工业有限公司 Ceramic core, preparation method of ceramic core and preparation method of casting

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TWI698317B (en) * 2018-06-25 2020-07-11 晟銘電子科技股份有限公司 Hollow member and preparing method thereof

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JPS63115649A (en) * 1986-10-31 1988-05-20 Sintokogio Ltd Molding method for hollow core
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CN1006284B (en) * 1987-02-28 1990-01-03 航空工业部第六○七研究所 Technique of water-soluble sintering core for aluminum alloy casting
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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100402461C (en) * 2006-12-08 2008-07-16 辽宁省轻工科学研究院 Magnesia ceramic core and its injection moulding process
CN102211144A (en) * 2011-06-08 2011-10-12 安徽应流铸业有限公司 Casting method of core of casting mould
CN103017179A (en) * 2011-09-28 2013-04-03 江苏大自然电器标牌厂 Acoustic energy power amplifier
CN102896278A (en) * 2012-09-06 2013-01-30 沈阳黎明航空发动机(集团)有限责任公司 Preparation method for hollow mold core having high temperature deformability and removability
CN102896278B (en) * 2012-09-06 2015-07-01 沈阳黎明航空发动机(集团)有限责任公司 Preparation method for hollow mold core having high temperature deformability and removability
CN103433431B (en) * 2013-09-06 2016-08-31 安徽应流集团霍山铸造有限公司 The ceramic core of cylinder head inner chamber
CN103433431A (en) * 2013-09-06 2013-12-11 安徽应流集团霍山铸造有限公司 Ceramic core for inner cavity of cylinder cover
CN104014737A (en) * 2014-05-19 2014-09-03 沈阳工业大学 Preparation technology for complex ceramic core with embedded cavity structure
CN104014737B (en) * 2014-05-19 2016-11-02 沈阳工业大学 A kind of preparation technology of complexity embedded cavity structure ceramic core
CN104043770A (en) * 2014-06-10 2014-09-17 中国科学院金属研究所 Packing powder for sintering ceramic core
CN104353790A (en) * 2014-11-12 2015-02-18 中船重工西安东仪科工集团有限公司 Preparation method of closed spatial curved surface structure casting core
CN104353790B (en) * 2014-11-12 2016-06-29 中船重工西安东仪科工集团有限公司 The preparation method of closed type space curved surface structural casting core
CN105983658B (en) * 2015-08-18 2018-06-26 中国科学院金属研究所 A kind of Ti3The preparation method of Al alloys guide vane inner ring model for precision casting and formwork
CN105983658A (en) * 2015-08-18 2016-10-05 中国科学院金属研究所 Preparation method of model and mould case for precision casting of Ti3Al alloy guide vane inner ring
CN105127373A (en) * 2015-09-10 2015-12-09 上海大学 Manufacturing method of hollow ceramic core for double-wall hollow blade
CN105855472A (en) * 2016-04-26 2016-08-17 东方电气集团东方汽轮机有限公司 Manufacturing method for hollow ceramic core
CN106694809A (en) * 2016-12-01 2017-05-24 海南科技职业学院 Method for preparing water soluble core mold of precise device
CN110072648A (en) * 2016-12-13 2019-07-30 通用电气公司 For making the integration casting core shell structure with printing tube of cast member
CN106827425A (en) * 2017-01-20 2017-06-13 埃维柯塑料科技（安徽）有限公司 A kind of PA Plastic valves Shooting Technique
CN106944592A (en) * 2017-04-28 2017-07-14 鹰普航空零部件（无锡）有限公司 Water-soluble wax and Water-soluble ceramic core combine the application in aluminium alloy model casting
CN107052260A (en) * 2017-05-27 2017-08-18 鹰普航空零部件（无锡）有限公司 Application of the ceramic core bag wax positioning process in model casting
CN107282894A (en) * 2017-06-21 2017-10-24 河南梦祥纯银制品有限公司 A kind of hollow hollow out jewellery are integrally formed processing method
CN108484178A (en) * 2018-03-01 2018-09-04 辽宁航安特铸材料有限公司 A kind of preparation method and applications of Water-soluble ceramic core plasticizer
CN109702209A (en) * 2019-01-18 2019-05-03 佛山隆易科技有限公司 A kind of manufacture contains the manufacturing method of profile-followed water route part
CN110711845A (en) * 2019-10-31 2020-01-21 中国航发南方工业有限公司 Ceramic core, preparation method of ceramic core and preparation method of casting

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