CN101259637A - High density holes thin wall honeycomb ceramic extrusion mold and manufacturing method thereof - Google Patents

High density holes thin wall honeycomb ceramic extrusion mold and manufacturing method thereof Download PDF

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Publication number
CN101259637A
CN101259637A CN 200810089305 CN200810089305A CN101259637A CN 101259637 A CN101259637 A CN 101259637A CN 200810089305 CN200810089305 CN 200810089305 CN 200810089305 A CN200810089305 A CN 200810089305A CN 101259637 A CN101259637 A CN 101259637A
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China
Prior art keywords
mould
manufacture method
die
coating
plating
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CN 200810089305
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Chinese (zh)
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潘吉庆
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CHUANGDAO AOFU FINE CERAMICS Co Ltd BEIJING
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CHUANGDAO AOFU FINE CERAMICS Co Ltd BEIJING
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Priority to CN 200810089305 priority Critical patent/CN101259637A/en
Publication of CN101259637A publication Critical patent/CN101259637A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • B28B3/26—Extrusion dies
    • B28B3/269—For multi-channeled structures, e.g. honeycomb structures
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • C25D1/08—Perforated or foraminous objects, e.g. sieves

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Abstract

The invention relates to 'a high hole density thin wall honeycomb ceramic extrusion die and the manufacturing method', which belong to the field of ceramic machining A method for manufacturing high hole density thin wall honeycomb ceramic extrusion die comprises the following steps that: (1) the number of holes and wall thickness to be designed are fixed, (2) a drill with a diameter which is 0.1 mm longer than the designed hole diameter of the front mud guiding hole and a molybdenum wire with a diameter which is 0.1mm larger than the width of the designed rear incising groove are adopted to make half-finished die, (3) at least one layer of coating of hard metallic material or hard ceramic material is plated and attached on the surface of the mud guiding hole and the cutting groove. The coating attached to the surface of the conventional die ensures the die to make honeycomb ceramics with high hole-density and thin case wall. At the same time, the finish degree of the surface is good, the friction between the die and the mud is caused to be reduced due to the high hardness of the coating and better surface finish, thus increasing the whole strength and weary resistance of the die and extending the service life of the die.

Description

A kind of high density holes thin wall honeycomb ceramic extrusion mold and manufacture method thereof
Technical field
The present invention relates to the ceramic honeycomb manufacture field, particularly relate to a kind of high density holes thin wall honeycomb ceramic extrusion mold.
Background technology
Ceramic honey comb is used as the carrier of the catalyst of various industries widely owing to possess the performance of many excellences such as high-specific surface area, high water absorbing capacity, high mechanical properties, high thermal stability, highly corrosion resistant.Because catalyst is in chemical reaction process, do not participate in chemical reaction, but it but can promote chemical reaction intensity greatly, and catalyst wants to promote the carrying out of chemistry, just must contact fully, so the size of the specific area of catalyst directly affects the performance of catalyst with the material that participates in chemical reaction.As the ceramic honey comb of catalyst carrier just must be big as far as possible provide big specific area for catalyst.
Wanting to increase the specific area of ceramic honey comb, can only be the quantity that increases the through hole in the unit are, for example: be increased to 600 orders or 900 orders (300 orders represent to have in per square inch the area hole of 300 perforations) etc. from 300 orders or 400 orders.If but be the quantity that the simple interior hole number of increase unit are equally also can increase cell walls, and the increase of cell walls can increase the flow resistance of chemical reaction substance (gas or liquid), can bring negative influence to chemical reaction.Want to increase hole density and otherwise increase the resistance that the grid cornice comes, therefore have only thickness proportionally to reduce with the grid wall, can guarantee that so just hole count increases, grid wall sum increases, and grid wall gross thickness is constant.
From the processing technology of mould, wanting to produce the product that density is higher, the grid wall is thinner that portals is exactly to increase the diameter that the mould front end is led the quantity in mud hole, reduced to lead the mud hole, increase simultaneously mould rear end cutting groove density, reduce the width of cutting groove.Yet want to reduce to lead the mud bore dia and just must use the little drill bit of diameter, and the width that wants to reduce cutting groove also must adopt thinner cutting molybdenum filament, with regard to the at present domestic drill bit and the market of molybdenum filament, also there is not the product that can meet the demands, this also is that the domestic ceramic honey comb die hole density of restriction is not sent out raising, the one of the main reasons that the grid wall cannot reduce.If improved hole density on the other hand, reducing the grid wall thickness also can bring the area of mould rear end pillar and front end tie point to reduce greatly, the ability of the pressure that produces when mould is resisted extrusion molding like this will reduce greatly, and the mould of producing does not so substantially just have practical value.Therefore at present the domestic automobile honeycomb ceramic carrier can only the production aperture below 400 orders, the low grade products of grid wall thickness more than 0.18mm.Honeycomb ceramic extrusion mold structural representation such as Fig. 1.
Summary of the invention
At fabrication process condition in the above-mentioned field and the scarce capacity that processes raw material, the invention provides a kind of manufacture method of high density holes thin wall honeycomb ceramic extrusion mold, the mould of this method manufacturing can not only be produced the ceramic honey comb of high density holes thin wall, its hole density reaches the 400-900 order, the grid wall thickness is 0.15-0.08mm, and the service life of this mould also big leap ahead, after mould uses wearing and tearing, can also make mould realize reusing by reprocessing, reduce the cost of ceramic honey comb product mold greatly.
The mould that the present invention simultaneously also provides this method to make.
A kind of manufacture method of high density holes thin wall honeycomb ceramic extrusion mold, comprise the steps: (1) the definite hole order number and wall thickness that will design, (2) adopt the drill bit of leading the mud hole big 0.1mm in aperture than the front end of design, the molybdenum filament of the roomy 0.1mm diameter of rear end cutting groove than design is made the mould semi-finished product, and (3) enclose the coating of one deck hard metal material at least or hard ceramic material leading the plating of mud hole and cutting groove surface.
Temperature when described plating is attached is no more than 100 ℃.
The preceding need of described step (3) thoroughly clean the mould semi-finished product.
Described thorough cleaning is the semi-finished product mould to be cleaned in conjunction with washing agent through ultrasonic wave handle.
The attached method of described plating adopts chemical plating, vapour deposition or galvanoplastic.
Preferred chemical plating.
Described hard metal material is nickel alloy, evanohm, titanium alloy or tungsten alloy, and described hard ceramic material is carborundum, tungsten carbide or titanium nitride.
Described thickness of coating is 40-60um.
The mould that said method makes.
The manufacture method of high density holes thin wall honeycomb ceramic extrusion mold of the present invention, the at first definite hole order number and wall thickness that will design, select the thick molybdenum filament of larger-diameter drill bit and diameter for use, use the high steel of hardness to process the mould semi-finished product (present domestic tool industry can provide the product of needs) that the order number that portals can meet the demands.Such semi-finished product are on Mould design, and the diameter of leading the mud hole of front end is bigger than normal, the width of rear end cutting groove (see figure 1) also bigger than normal, all can not satisfy the Mould design requirement.For the mud bore dia of leading that makes top mould diminishes, cutting groove narrows down, we adopt the technology of chemical plating or other surface coating, one deck hard metal material or ceramic material are at least enclosed in the semi-finished product die surface plating that processes in the above, the thickness of metal material is according to the difference decision between the size of leading mud bore dia and cutting groove width of semi-finished product mould and the mould design, and the thickness of coating is for till making the semi-finished product mould and satisfying the mould designing requirement in a word.The mould that this method is produced not only can satisfy the Mould design requirement, and because the surface smoothness of coating is more a lot of than exceeding of machining and discharge processing, mould in use like this, and the mill sassafras power between the used pug of moulding can reduce greatly, so both can reduce the extrusion pressure of make-up machine, also can reduce the pressure that mould bears; On the other hand since the hardness of coating all the hardness than mould base material is high a lot, the bulk strength and the anti-wear performance of the mould after therefore handling through coating all step a stage.Before coating, the semi-finished product mould using ultrasound ripple that processes should be cleaned the mould that processes completely in conjunction with the cleaning gimmicks such as surfactant of necessity, guarantee that the various dirts and the iron rust of die surface are removed fully, with enough strong of the adhesive force of guaranteeing coating and matrix, and be unlikely in use to come off.When carrying out the coating processing to mould, the temperature of processing must be controlled at below 100 ℃, the not so distortion that when plating is attached, also can bring mould, and destroy mould.All the other step method adopt the conventional attached method of plating to get final product.The thickness of coating that each method obtains be general ability all about 50um, lead the maximum of mud hole and cutting groove like this and dwindle ability just all in 100um.
Because the die surface plating in routine has a coating, make this mould can produce the thin ceramic honey comb of high density holes, grid wall, simultaneously because the hardness of coating is big, surface smoothness is better, thereby the frictional force between mould and pug is reduced, thereby make the bulk strength of mould and wearability strengthen the service life of having improved mould.
Description of drawings
Fig. 1 honeycomb ceramic extrusion mold structural representation
The 1-front end is led the mud hole, 2-rear end cutting groove, 3-pillar tie point.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment.Because various plating methods are the technological requirement of a basis industry in coating process just, concrete method of operating and step can have nothing in common with each other, but the performance requirement basically identical of the product that final production is come out.
Embodiment 1 electroless nickel alloy, (be designed to 600 orders, the grid wall thickness is 0.12mm, half-finished grid wall thickness is 0.18mm) will produce good semi-finished product mold wheel banish in the cleaning fluid that contains surfactant that configures and pure water in, with vibration of ultrasonic wave mould is cleaned completely, guarantee the not residual any dirt in surface and the iron rust of mould.Cleaned mould is suspended in the chemical plating fluid that circulates, the temperature of chemical plating fluid will be controlled between 40 ℃-100 ℃, the speed of chemical plating can speed along with the rising of temperature, when the surface of mould is being covered after last layer degree thickness is the nickel alloy of 30um uniformly, the finished product mould is taken out from plating bath, at the raffinate with clear water flush away surface, the finished product mould that such one 600 order grid wall thickness is 0.12mm just machines. and the hardness of the mould after the processing can have about 15 original degree to be brought up to about 40 degree.
Embodiment 2 chemical plating carborundum: (lead the mud bore dia is that 1.0mm cutting groove width is 0.15mm to the 900 purpose semi-finished product moulds that will process, it is 0.93mm that Mould design requires to leading the mud bore dia, the cutting groove width is 0.08mm) clean according to example 1 identical cleaning method, then mould is put into plating bath according to top identical method and carry out the coating processing, here used plating bath, owing in the plating bath of the steel alloy of routine, added sodium rice carborundum, die surface is when covering alloy layer like this, the carborundum particle of sodium rice will deposit simultaneously and be embedded in the steel alloy coating. after waiting the thickness of coating to reach requirement, mould is taken out from plating bath, clean up with the raffinate of clear water with die surface, so just producing 900 purpose grid wall thickness is the mould of 0.08mm.In order to increase the intensity of mould, can put into 300 ℃ baking oven by the mould that plating is good, be incubated 4 hours, not only can gain in strength through heat treated mould like this, also can increase the adhesive force of coating and die matrix.This mould is owing to inlayed wear-resisting especially thyrite in steel alloy, so the mould of producing in the anti-wear performance ratio 1 of mould strengthens greatly.
Embodiment 3 vapour deposition tungsten carbides: 600 orders that will process, the grid wall thickness is that the semi-finished product mould of 0.15mm cleans according to method identical in the previous example, then the semi-finished product mould is put on the objective table of the Sealing Arrangement that special-purpose vapour deposition handles, according to thickness of coating is that the parameter of 25um is set sedimentation time, then according to the method opening device of the vapour deposition of routine, after the equipment for the treatment of shuts down, take out the mould finished product, it is 0.1mm that the finished product mould becomes 600 order grid wall thickness.Height in the above example of mould strength that this method is produced, but mould is easy to generate distortion.
Embodiment 4 durionise alloys: 600 orders that will process, the grid wall thickness is that the semi-finished product mould of 0.15mm cleans according to method identical in the previous example, again the mould semi-finished product are put into electroplate liquid, connecting power supply according to the electric plating method of routine implements to electroplate to mould, after the thickness of coating meets the requirements of the requirement of 30um, take out mould, the raffinate of clean surface, obtaining 600 order grid wall thickness is the mould finished product of 0.09mm. the surface smoothness of the mould that the method is produced is poorer than chemical plating production, and also poor than above two kinds of methods of the adhesive force of coating and matrix, but the production cost of the method is lower.

Claims (10)

1, a kind of manufacture method of high density holes thin wall honeycomb ceramic extrusion mold, comprise the steps: (1) the definite hole order number and wall thickness that will design, (2) adopt the drill bit of leading the mud hole big 0.1mm in aperture than the front end of design, the molybdenum filament of the roomy 0.1mm diameter of rear end cutting groove than design is made the mould semi-finished product, and (3) enclose the coating of one deck hard metal material at least or hard ceramic material leading the plating of mud hole and cutting groove surface.
2, manufacture method according to claim 1, the temperature when described plating is attached are no more than 100 ℃.
3, manufacture method according to claim 1, the preceding need of described step (3) thoroughly clean the mould semi-finished product.
4, manufacture method according to claim 3, described thorough cleaning are the semi-finished product mould to be cleaned in conjunction with washing agent through ultrasonic wave handle.
5, manufacture method according to claim 1, the attached method of described plating adopts chemical plating, vapour deposition or galvanoplastic.
6, manufacture method according to claim 5, the attached method of described plating is a chemical plating.
7, manufacture method according to claim 1, described hard metal material are nickel alloy, evanohm, titanium alloy or tungsten alloy.
8, manufacture method according to claim 1, described hard ceramic material are carborundum, tungsten carbide or titanium nitride.
9, manufacture method according to claim 1, described thickness of coating are 40-60um.
10, the high density holes thin wall honeycomb ceramic extrusion mold for preparing of claim 1-9 either party method.
CN 200810089305 2007-10-29 2008-04-11 High density holes thin wall honeycomb ceramic extrusion mold and manufacturing method thereof Pending CN101259637A (en)

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CN200710176463 2007-10-29
CN200710176463.3 2007-10-29
CN 200810089305 CN101259637A (en) 2007-10-29 2008-04-11 High density holes thin wall honeycomb ceramic extrusion mold and manufacturing method thereof

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102862037A (en) * 2012-09-17 2013-01-09 李少荣 Preparation method of ultralarge high-pore-density honeycomb ceramic mold
CN103273563A (en) * 2013-05-27 2013-09-04 江苏省宜兴非金属化工机械厂有限公司 Method for manufacturing thin-walled honeycomb ceramic extrusion die
CN103707396A (en) * 2014-01-06 2014-04-09 北京科技大学 Method for precisely manufacturing ultrathin-wall honeycomb ceramic carrier extrusion molding mold
CN104379310A (en) * 2012-06-04 2015-02-25 日本碍子株式会社 Spinneret for molding honeycomb structure and manufacturing method therefor
CN105579208A (en) * 2013-09-23 2016-05-11 康宁股份有限公司 Honeycomb ceramic substrates, honeycomb extrusion dies, and methods of making honeycomb ceramic substrates
CN105773091A (en) * 2016-03-15 2016-07-20 江苏省宜兴非金属化工机械厂有限公司 Manufacturing method for thin-wall large-specification honeycomb ceramic carrier die capable of being repeatedly coated
CN107150457A (en) * 2016-03-02 2017-09-12 宜昌宏森尾气净化科技有限公司 Catalyst carrier mould
CN107877674A (en) * 2017-11-14 2018-04-06 南昌航空大学 A kind of method for strengthening three-way catalytic converter carrier extrusion die
CN108349110A (en) * 2015-11-20 2018-07-31 康宁股份有限公司 Extrusion die for honeycomb ceramics
CN110899746A (en) * 2019-11-28 2020-03-24 宜兴王子制陶有限公司 High-consistency honeycomb structure body die drilling method

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104379310B (en) * 2012-06-04 2016-11-09 日本碍子株式会社 Die for forming honeycomb structure and manufacture method thereof
CN104379310A (en) * 2012-06-04 2015-02-25 日本碍子株式会社 Spinneret for molding honeycomb structure and manufacturing method therefor
CN102862037A (en) * 2012-09-17 2013-01-09 李少荣 Preparation method of ultralarge high-pore-density honeycomb ceramic mold
CN103273563A (en) * 2013-05-27 2013-09-04 江苏省宜兴非金属化工机械厂有限公司 Method for manufacturing thin-walled honeycomb ceramic extrusion die
CN103273563B (en) * 2013-05-27 2015-02-04 江苏省宜兴非金属化工机械厂有限公司 Method for manufacturing thin-walled honeycomb ceramic extrusion die
CN105579208A (en) * 2013-09-23 2016-05-11 康宁股份有限公司 Honeycomb ceramic substrates, honeycomb extrusion dies, and methods of making honeycomb ceramic substrates
CN105579208B (en) * 2013-09-23 2019-10-01 康宁股份有限公司 The manufacturing method of ceramic honeycomb substrate, honeycomb extrusion die and ceramic honeycomb substrate
CN103707396B (en) * 2014-01-06 2016-01-06 北京科技大学 A kind of method of precision manufactureing ultra-thin-wall honeycomb ceramic carrier extrusion molding mould
CN103707396A (en) * 2014-01-06 2014-04-09 北京科技大学 Method for precisely manufacturing ultrathin-wall honeycomb ceramic carrier extrusion molding mold
CN108349110A (en) * 2015-11-20 2018-07-31 康宁股份有限公司 Extrusion die for honeycomb ceramics
CN107150457A (en) * 2016-03-02 2017-09-12 宜昌宏森尾气净化科技有限公司 Catalyst carrier mould
CN107150457B (en) * 2016-03-02 2023-10-31 宜昌宏森尾气净化科技有限公司 Catalyst carrier die
CN105773091A (en) * 2016-03-15 2016-07-20 江苏省宜兴非金属化工机械厂有限公司 Manufacturing method for thin-wall large-specification honeycomb ceramic carrier die capable of being repeatedly coated
CN107877674A (en) * 2017-11-14 2018-04-06 南昌航空大学 A kind of method for strengthening three-way catalytic converter carrier extrusion die
CN110899746A (en) * 2019-11-28 2020-03-24 宜兴王子制陶有限公司 High-consistency honeycomb structure body die drilling method

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