CN101705384A - Method for preparing metal ceramic-based composite material by induction heating auxiliary self-propagating reaction - Google Patents
Method for preparing metal ceramic-based composite material by induction heating auxiliary self-propagating reaction Download PDFInfo
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- CN101705384A CN101705384A CN200910182614A CN200910182614A CN101705384A CN 101705384 A CN101705384 A CN 101705384A CN 200910182614 A CN200910182614 A CN 200910182614A CN 200910182614 A CN200910182614 A CN 200910182614A CN 101705384 A CN101705384 A CN 101705384A
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Abstract
The invention relates to a method for preparing a metal ceramic-based composite material by induction heating auxiliary self-propagating reaction. The method comprises the steps of taking two or more kinds of powder capable of carrying out self-propagating reaction by utilizing the self-propagating reaction principle, confecting the powder by chemometry, adding a certain proportion of metal powder to form composite material, evenly mixing the material to be pressed into prefabricated parts, adopting high frequency induction heating and igniting the prefabricated parts to enable self-propagating reaction to carry out on the prefabricated parts to produce metal ceramic-based composite materials, carrying out mould pressing 2-3 minutes after reaction to obtain the metal ceramic-based composite material. The invention has the advantages of complete combustion, high heat utilization efficiency, low preparation cost of the material, easy control, safety and reliability, and the prepared metal ceramic material has smooth and thick surface, high intensity and low porosity.
Description
(1) technical field
The present invention relates to a kind of method of high-frequency induction heating auxiliary self-spreading prepared in reaction metal ceramic-based composite material.Belong to the Materials Processing Engineering technical field.
(2) background technology
In recent years, along with the broad scale research exploitation of stupalith, ceramic technology also more and more causes people's attention.
Electromagnetic induction heating technology abbreviates IH (Induction Heating) technology as, is to grow up on the basis of Faraday's law of induction, is a kind of application form of Faraday's law of induction.It has advantages such as rate of heating is fast, heating efficiency is high, pollution-free, is widely used in fields such as household electrical appliances, quenching, welding.
Electromagnetic induction heating technology is to utilize the high frequency principle of electric-heating, alternating-current is converted into high-frequency current, produce high frequency magnetic field, when magnetic line of force in the magnetic field acts on the container made of iron shell by insulcrete, magnetic line of force is cut, produce a large amount of little eddy current, make self rapid heating of container made of iron, thereby reach the purpose of heating.The nichrome wire heating technique of using always in its present household electrical appliances, far infrared heating technology, microwave heating technique etc. have unrivaled superiority.
The advantage of induction heating technique:
1, has accurate heat penetration and heating region, and be easy to control;
2, be easy to realize that superpower is intensive, rate of heating is fast, the efficient height;
3, Heating temperature height, Heating temperature are easy to control;
4, Heating temperature by workpiece surface to conducted inside or infiltration;
5, adopt contactless type of heating, in heat-processed, be difficult for mixing impurity;
6, the workpiece material consume is little, and oxide skin generates few;
7, operating environment compliance with environmental protection requirements;
8, be easy to heat automatization.
Before the present invention made, the method that in the past prepared metal ceramic-based composite material normally adopted single from spreading method, singlely not exclusively occurred non-burn-through defective easily from the method that spreads reaction when making big product.
(3) summary of the invention
The objective of the invention is to overcome the large volume that prior art exists and react incomplete deficiency, a kind of method that can improve the complete induction heating auxiliary self-spreading prepared in reaction metal ceramic-based composite material of prefabricated component self-propagating reaction is provided from spreading prefabricated component.
The object of the present invention is achieved like this: a kind of method of induction heating auxiliary self-spreading prepared in reaction metal ceramic-based composite material, described method is to utilize the self-propagating reaction principle, get the powder that two or more can carry out self-propagating reaction, by the stoichiometry preparation, and adding necessarily forms matrix material than the metal-powder of row; Be pressed into prefabricated component behind the mixing; Adopt high-frequency induction heating and light prefabricated component, make it that self-propagating reaction take place, generate metal ceramic-based composite material; In 2-3 second after self-propagating reaction finishes, carry out mold pressing, thereby obtain metal ceramic-based composite material.Described method comprises following technological process:
Step 1, by stoichiometric requirement preparation composite powder
Composite powder is made up of Ti powder, C powder and Fe powder.Wherein, Ti and C press the stoichiometric preparation, and Fe powder add-on is the 30wt% of composite powder gross weight.
Step 2, batch mixing
Ti powder, C powder and Fe powder are directly put into the stirrer dry blending 2～4 hours, make the mixed powder that needs;
Step 3, compacting prefabricated component;
The mixed powder that step 2 is made places mould, is pressed into prefabricated component on pressing machine;
Step 4, the hot pressing of high-frequency electromagnetic induction heating auxiliary self-spreading;
Utilize high-frequency induction furnace, adopt electric current 60-80A, voltage 220V heats prefabricated component and lights, make it that self-propagating reaction take place and generate the TiCFe matrix material, treat 2～3 seconds after the complete reaction, when reaction product is in thixotropic state, to its pressurization and pressurize 1-2 minute, improve its density and intensity, make product;
Step 5, for preventing the excessive generation of product thermal stresses cracking, product is imbedded in the sand and is cooled off.
Basic design of the present invention: according to spreading (SHS) reaction certainly is the principle of high heat-producing chemical reaction process, and electromagnetic inductive heating principle, SHS technology and hot closed-die forging technology combined, the SHS reaction can fully be carried out, generate metal ceramic-based composite material.Hot closed-die forging thixotropic forming by subsequently makes its densification.Here put retardant composite material with the high-frequency induction heating mode and make it that self-propagating reaction take place.Because this chemical reaction process carries out under the acting in conjunction of the high heat energy that induction heating and material self are emitted, so in reaction, can keep ceramic powder, metallic additions to be in molten state, the SHS reaction is spread to whole matrix material, the ceramic composition of generation and molten metal are fully fused.Melting of metal in the material, and and ceramic particle between form matrix material, thereby form complete metal ceramic-based composite material, realize purpose of the present invention.
The present invention can make intensity height, light weight, high-temperature resistant composite material.This method has reduced the deformation stress of matrix material, has improved the intensity of product.
Major advantage of the present invention is:
1) self propagating high temperature synthetic (SHS) combines with electromagnetic induction heating technology and reaction hot-pressing technology, can make the matrix material of excellent performance, utilize exothermic heat of reaction to improve the temperature of product simultaneously, thereby improve the bonding strength of ceramic particle and iron, overcome and singlely when making big product, non-burn-through deficiency occurred, improved reaction efficiency from spreading method.
2) this composite ceramic material is that SHS is reflected under the induction heating booster action, utilizes cheap starting materials directly to be generated by reactant, has saved material cost.
3) maximum current during actually operating is 60A, voltage 220V, and the required most of heat energy source of heating product has been saved the energy in self thermopositive reaction of material.The thixotroping moulding has reduced equipment tonnage.The temperature of reaction height, product is pure, operation is easy to control.
To sum up, advantage of the present invention is:
1) burning fully, the cermet material smooth surface of preparation, densification, intensity height, void content are low;
2) efficiency of utilization height, the material preparation cost is low;
3) be easy to control, safe and reliable.
(4) embodiment
The method of the induction heating auxiliary self-spreading prepared in reaction metal ceramic-based composite material that the present invention relates to, described method comprises following technological process:
Step 1, by stoichiometric requirement preparation composite powder
Composite powder is by Ti, C, Fe powder constituent, and getting powder particles respectively is 200-270 purpose Ti powder 128g, C powder 32g and Fe powder 40g.
Step 2, batch mixing
Ti powder, C powder and Fe powder are directly put into the stirrer dry blending 2～4 hours, make the mixed powder that needs.
Step 3, compacting prefabricated component
The mixed powder that step 2 is made places mould, is pressed into prefabricated component on pressing machine.
Step 4, the hot pressing of high-frequency electromagnetic induction heating auxiliary self-spreading (SHS)
Utilize high-frequency induction furnace, adopt electric current 60A, voltage 220V heats prefabricated component and lights, make it that self-propagating reaction take place and generate the TiCFe matrix material, treat 2～3 seconds after the complete reaction, when reaction product is in thixotropic state, to its pressurization and pressurize 1 minute, improve its density and intensity, make product.
Step 5, for preventing the excessive generation of product thermal stresses cracking, product should be imbedded slowly cooling in the sand.
Claims (2)
1. the method for induction heating auxiliary self-spreading prepared in reaction metal ceramic-based composite material, it is characterized in that described method is to utilize the self-propagating reaction principle, get the powder that two or more can carry out self-propagating reaction, by the stoichiometry preparation, and adding necessarily forms matrix material than the metal-powder of row; Be pressed into prefabricated component behind the mixing; Adopt high-frequency induction heating and light prefabricated component, make it that self-propagating reaction take place, generate metal ceramic-based composite material; In 2-3 second after self-propagating reaction finishes, carry out mold pressing, thereby obtain metal ceramic-based composite material.
2. the method for induction heating auxiliary self-spreading prepared in reaction metal ceramic-based composite material according to claim 1 is characterized in that described method comprises following technological process:
Step 1, by stoichiometric requirement preparation composite powder
Composite powder is by Ti powder, C powder and Fe powder, and wherein, Ti and C press the stoichiometric preparation, and Fe powder add-on is the 30wt% of composite powder gross weight;
Step 2, batch mixing
Ti powder, C powder and Fe powder are directly put into the stirrer dry blending 2～4 hours, make the mixed powder that needs;
Step 3, compacting prefabricated component
The mixed powder that step 2 is made places mould, is pressed into prefabricated component on pressing machine;
Step 4, the hot pressing of high-frequency electromagnetic induction heating auxiliary self-spreading
Utilize high-frequency induction furnace, adopt electric current 60-80A, voltage 220V heats prefabricated component and lights, make it that self-propagating reaction take place and generate the TiCFe matrix material, treat the 2-3 second after the complete reaction, when reaction product is in thixotropic state, to its pressurization also pressurize 1-2 minute, make product;
Step 5, product are imbedded in the sand and are cooled off.
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| CN200910182614A CN101705384A (en) | 2009-09-18 | 2009-09-18 | Method for preparing metal ceramic-based composite material by induction heating auxiliary self-propagating reaction |
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| CN200910182614A CN101705384A (en) | 2009-09-18 | 2009-09-18 | Method for preparing metal ceramic-based composite material by induction heating auxiliary self-propagating reaction |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825363A (en) * | 2012-09-11 | 2012-12-19 | 江阴东大新材料研究院 | Hammering and pressing method with welding for self-propagation surfacing of metal ceramic by assistance of manual argon welding |
| CN103014703A (en) * | 2012-12-28 | 2013-04-03 | 江阴东大新材料研究院 | Method for preparing honeycomb ceramic coating on surface of steel plate |
| CN103028853A (en) * | 2012-12-28 | 2013-04-10 | 江阴东大新材料研究院 | Method for manufacturing honeycomb ceramic sandwich plate on surface of steel plate in self-propagating manner with assistance of resistance spot welding |
| CN104807743A (en) * | 2015-04-21 | 2015-07-29 | 北京航空航天大学 | Heating method for ceramic-based composite material |
| CN105478777A (en) * | 2015-12-14 | 2016-04-13 | 中国航空工业集团公司北京航空制造工程研究所 | Metal/ceramic gradient material and preparation method thereof |
| CN115971454A (en) * | 2022-12-27 | 2023-04-18 | 山西阳煤化工机械（集团）有限公司 | Preparation method of ceramic reinforced metal wear-resistant preform and composite material thereof |
-
2009
- 2009-09-18 CN CN200910182614A patent/CN101705384A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825363A (en) * | 2012-09-11 | 2012-12-19 | 江阴东大新材料研究院 | Hammering and pressing method with welding for self-propagation surfacing of metal ceramic by assistance of manual argon welding |
| CN103014703A (en) * | 2012-12-28 | 2013-04-03 | 江阴东大新材料研究院 | Method for preparing honeycomb ceramic coating on surface of steel plate |
| CN103028853A (en) * | 2012-12-28 | 2013-04-10 | 江阴东大新材料研究院 | Method for manufacturing honeycomb ceramic sandwich plate on surface of steel plate in self-propagating manner with assistance of resistance spot welding |
| CN103028853B (en) * | 2012-12-28 | 2015-04-29 | 江阴东大新材料研究院 | Method for manufacturing honeycomb ceramic sandwich plate on surface of steel plate in self-propagating manner with assistance of resistance spot welding |
| CN104807743A (en) * | 2015-04-21 | 2015-07-29 | 北京航空航天大学 | Heating method for ceramic-based composite material |
| CN105478777A (en) * | 2015-12-14 | 2016-04-13 | 中国航空工业集团公司北京航空制造工程研究所 | Metal/ceramic gradient material and preparation method thereof |
| CN115971454A (en) * | 2022-12-27 | 2023-04-18 | 山西阳煤化工机械（集团）有限公司 | Preparation method of ceramic reinforced metal wear-resistant preform and composite material thereof |
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Open date: 20100512 |