CN102862037A - Preparation method of ultralarge high-pore-density honeycomb ceramic mold - Google Patents
Preparation method of ultralarge high-pore-density honeycomb ceramic mold Download PDFInfo
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- CN102862037A CN102862037A CN2012103427870A CN201210342787A CN102862037A CN 102862037 A CN102862037 A CN 102862037A CN 2012103427870 A CN2012103427870 A CN 2012103427870A CN 201210342787 A CN201210342787 A CN 201210342787A CN 102862037 A CN102862037 A CN 102862037A
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Abstract
The invention relates to a preparation method of a ultralarge high-pore-density honeycomb ceramic mold, which is characterized in that a mud guide porous plate is added in front of a traditional honeycomb ceramic mold to thicken the large high-pore-density honeycomb mold and to realize a purpose for enhancing the mold; and meanwhile, a mud guide hole on the front section of the mold is divided into two parts to be manufactured, the depth of the mud guide hole on the front end of the mold is greatly reduced, the difficulty for machining a small blind hole is reduced, the danger that a drill bit is broken in the machining process of a deep small blind hole is reduced, and the manufacturing efficiency of the mold can be greatly improved; and meanwhile the verticality of the mud guide hole on the front section of the mold can be improved, so that more precision for positioning the mud guide hole of the mold and the center of a cutting groove on the rear end can be realized, and the quality of the mold is improved. Due to adopting the preparation method, the thin-wall ultralarge honeycomb ceramic mold with pore density being less than or equal to 600 meshes, wall thickness being more than or equal to 0.1mm, maximal diameter being less than or equal to 500mm and the forming pressure being more than 15MPa can be manufactured.
Description
Technical field
The present invention relates to special cermacis production and use the making field of mould, be specially a kind of preparation method of super large-scale high density holes ceramic honey comb mould.
Background technology
Along with the continuous lifting of motor vehicle environmental protection grade, the state three of Diesel engine, state's four Abgasgesetzs were also promulgated successively in each big city of China in recent years.Exhaust gas from diesel vehicle post processing path mainly is divided into two schemes (as shown in Figure 1 and Figure 2) at present.In this two schemes, DPF granule capturing system need to use wall-flow honeycomb ceramic filter, to use catalyst carrier in the SCR system, and because Diesel engine generally all is the high discharge capacity of high-power, so used ceramic honey comb also all is large specification, the diameter of common product all between 150-450mm, hole density at 100 orders between 400 orders.
Technique according to traditional making ceramic honey comb mould (as shown in Figure 3), under the prerequisite that guarantees the 15MPa briquetting pressure, the maximum gauge of common 100 purpose moulds can only reach 220mm, the maximum gauge of 200 order moulds can only reach 200mm, the maximum gauge of 300 order moulds can only reach 180mm, and the maximum gauge of 400 order moulds can only reach 150mm.Thus, the technique of traditional making ceramic honey comb mould can not satisfy diesel vehicle with the needs of large specification high density holes honeycomb ceramic carrier.
Summary of the invention
Technical problem solved by the invention is to provide a kind of preparation method of super large-scale high density holes ceramic honey comb mould.The method is led the mud orifice plate by adding lastblock in traditional ceramic honey comb mould front, thickeies large specification high density holes ceramic honey comb mould, reaches the purpose that strengthens to mould; Simultaneously, the mud hole of leading of mould leading portion is divided into two to make, has also reduced greatly the mould front end and led the degree of depth in mud hole, reduced the difficulty of processing small blind hole, reduced and processed the risk that dark small blind hole process is interrupted drill bit, can promote greatly the manufacturing efficient of mould; Simultaneously also can improve the perpendicularity that the mould leading portion is led the mud hole, make the cutting groove centralized positioning of leading mud hole and rear end of mould more accurate, thereby promote the quality of mould.
Technical problem solved by the invention realizes by the following technical solutions:
A kind of preparation method of super large-scale high density holes ceramic honey comb mould, concrete preparation process is as follows:
(1) according to the specification (hole density, grid wall thickness, appearance and size) of shaped article, molding pressure, designing mould, described mould comprise that a conventional mould and one lead the mud orifice plate;
(2) according to Design of Dies, select die steel, and according to designing requirement, the appearance and size (diameter, thickness) of two die steels etc. is processed, and end face is smooth with the grinding machine correct grinding;
(3) at the non-machining area in the edge of two mold blank, the mode of playing pin with boring is fixed together two mold blank location;
Two mold blank that (4) will fix are fixed on the Digit Control Machine Tool, will lead the mud orifice plate up in the time of fixedly;
(5) require to punch programming according to Design of Dies in Digit Control Machine Tool, and two mold blank that combine are carried out the punching first time, this time the degree of depth of punching is: greater than the thickness of leading the mud orifice plate, less than the degree of depth of leading the mud hole;
(6) after punching is finished for the first time, not moving under the prerequisite of conventional mold blank, remove the mud guiding plate of accomplishing fluently through hole;
(7) according to for the first time duplicate punching location, revise the degree of depth of punching for the second time, the degree of depth of punching for the second time=lead the mud hole depth-degree of depth of punching the first time is carried out the punching programming second time;
(8) conventional mold blank is carried out beating the blind hole operation second time;
(9) after punching is finished for the second time, take off conventional mold blank, two mold blank are put into heat-treatment furnace together, carry out hardening heat and process, heat treatment temperature is between 600-800 degree, and the blank intensity after the processing is between Rockwell hardness 30-60HRC;
(10) the conventional mold blank that heat treatment is good is fixed on the spark discharge cutting off machine, requires conventional mold blank blind hole is led to the line cutting processing that face carries out mud guiding slot according to Design of Dies, and mud guiding slot and blind hole are connected;
(11) after mud guiding slot cutting is finished, conventional mould is taken off, will lead the mud orifice plate and conventional mould is fixed together according to the mode of step (3), finish the manufacturing of whole mould.
Compared with prior art, the invention has the beneficial effects as follows:
Technique of the present invention can be made the high density holes, thin-walled, briquetting pressure of the density of portalling≤600 orders, wall thickness 〉=0.1mm, maximum gauge≤500mm greater than the super large-scale ceramic honey comb mould of 15MPa.
Description of drawings
Fig. 1 is the schematic diagram of present exhaust gas from diesel vehicle post processing scheme one.
Fig. 2 is the schematic diagram of present exhaust gas from diesel vehicle post processing scheme two.
Fig. 3 is the structural representation of traditional ceramic honey comb mould.
Fig. 4 is the structural representation of the ceramic honey comb mould for preparing of the present invention.
Among the figure: 1 mud guiding slot, 2 is led mud hole, 3 and is led the mud orifice plate.
The specific embodiment
In order to make technological means of the present invention, creation characteristic, workflow, using method reach purpose and effect is easy to understand, below further set forth the present invention.
Manufacture a product diameter 350mm, grid wall thickness 0.18mm, hole density 300 orders, extrusion pressure greater than 15Mpa ceramic honey comb mould.
(1) selects two blocks of circular SKD11 mould steel, be processed into respectively by lathe and grinding machine, the mold blank of 480mm thickness 20mm, and the mud guiding plate blank of 480mm thickness 18mm.
(2) above two compact spares are overlaped, on the blank diameter line, from 2 points of blank edge 5mm, with the silk end threading, then with screw two blanks are fixed together.
Two blanks that (3) will fix, be fixed on the precision drilling machine according to mud guiding plate direction up, take position, the blank center of circle as anchor point, according to die design schemes (product diameter 350mm, 300 orders, grid wall thickness 0.18mm, contractibility 7%), drilling machine is carried out for the first time punching programming: the punching scope: in the circle of blank central diameter 380mm, the hole arrangement form: matrix is arranged uniformly, hole center distance 3.15mm, the punching degree of depth is 20mm, and bore dia is 1.3mm.
(4) after the numbering journey, start precision drilling machine, carry out the punching first time, the punching process is in order to ensure the uniformity of punching, every drill bit punching quantity is according to the quality of selected drill bit, be controlled at 50 holes take interior as good, after finishing by programming punching, change green bit to punching according to same program hole, school again.
(5) after punching was finished for the first time, mold blank was located under the constant prerequisite under guaranteeing, unclamps two compact spare connecting screws, takes the mud guiding plate that has openning hole above away.
(6) do not change the punching elements of a fix, revise for the second time punching programming: the punching scope: in the circle of blank central diameter 380mm, the hole arrangement form: matrix is arranged uniformly, hole center distance 3.15mm, and the punching degree of depth is 13mm, bore dia is 1.3mm.The accurate puncher of startup carried out the punching second time after programming was finished, and the mode of operation of punching is the same with for the first time punching for the second time.
(7) after punching is finished for the second time, again with screw two blanks are fixed together, under 650 ℃ temperature, carry out 24 hours heat treatment, make die hardness reach the HRC45 degree.
(8) mold blank is fixed on the Precision EDM cutting off machine, equally take position, the blank center of circle as anchor point, cut direction is parallel with the matrix bearing of trend of punching, the cutting wire molybdenum filament of 0.15mm, line cutting programming is as follows: cutting spacing 1.577mm, cutting groove width: 0.194mm, depth of cut: 5.5mm, wire travelling speed 5m/s.After finishing programming and location, start cutting machine and carry out the mud guiding slot line cutting processing first time, after machining for the first time, the cutting wire that also should more renew is once repaired cutting according to identical program.
(9) after cutting is finished for the first time, with the mold blank 90-degree rotation, position program setting according to the same method of step 8) again and carry out the cutting processing second time.
(10) after the mud guiding slot cutting is finished, again with screw mud guiding plate and Die and mould plate are fixed, finished whole Mold Making.
Make 450mm, grid wall thickness 0.22mm, hole density 200 orders, extrusion pressure greater than 15Mpa ceramic honey comb mould.
(1) select two blocks of circular SKD61 mould steel, by lathe and grinding machine, be processed into the mold blank of 600mm thickness 22mm, and the mud guiding plate blank of 600mm thickness 20mm.
(2) above two compact spares are overlaped, on the blank diameter line, from 2 points of blank edge 5mm, with the silk end threading, then with screw two blanks are fixed together.
Two blanks that (3) will fix, be fixed on the precision drilling machine according to mud guiding plate direction up, take position, the blank center of circle as anchor point, according to die design schemes (product diameter 450mm, 200 orders, grid wall thickness 0.22mm, contractibility 5%), drilling machine is carried out for the first time punching programming: the punching scope: in the circle of blank central diameter 500mm, the hole arrangement form: matrix is arranged uniformly, hole center distance 3.782mm, the punching degree of depth is 22mm, and bore dia is 1.5mm.
(4) after the numbering journey, start precision drilling machine, carry out the punching first time, the punching process is in order to ensure the uniformity of punching, every drill bit punching quantity is according to the quality of selected drill bit, be controlled at 50 holes take interior as good, after finishing by programming punching, change green bit to punching according to same program hole, school again.
(5) after punching was finished for the first time, mold blank was located under the constant prerequisite under guaranteeing, unclamps two compact spare connecting screws, takes the mud guiding plate that has openning hole above away.
(6) do not change the punching elements of a fix, revise for the second time punching programming: the punching scope: in the circle of blank central diameter 500mm, the hole arrangement form: matrix is arranged uniformly, hole center distance 3.782mm, and the punching degree of depth is 15mm, bore dia is 1.5mm.The accurate puncher of startup carried out the punching second time after programming was finished, and the mode of operation of punching is the same with for the first time punching for the second time.
(7) after punching is finished for the second time, again with screw two blanks are fixed together, under 680 ℃ temperature, carry out 24 hours heat treatment, make die hardness reach the HRC48 degree.
(8) mold blank is fixed on the Precision EDM cutting off machine, equally take position, the blank center of circle as anchor point, cut direction is parallel with the matrix bearing of trend of punching, the cutting wire molybdenum filament of 0.18mm, line cutting programming is as follows: cutting spacing 1.891mm, cutting groove width: 0.232mm, depth of cut: 5.5mm, wire travelling speed 5m/s.After finishing programming and location, start cutting machine and carry out the mud guiding slot line cutting processing first time, after machining for the first time, the cutting wire that also should more renew is once repaired cutting according to identical program.
(9) after cutting is finished for the first time, with the mold blank 90-degree rotation, position program setting according to the same method of step 8) again and carry out the cutting processing second time.
(10) after the mud guiding slot cutting is finished, again with screw mud guiding plate and Die and mould plate are fixed, finished whole Mold Making.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (1)
1. the preparation method of a super large-scale high density holes ceramic honey comb mould is characterized in that, concrete preparation process is as follows:
(1) according to the specification of shaped article, molding pressure, designing mould, described mould comprise that a conventional mould and one lead the mud orifice plate;
(2) according to Design of Dies, select die steel, and according to designing requirement, the appearance and size of two die steels is processed, and end face is smooth with the grinding machine correct grinding;
(3) at the non-machining area in the edge of two mold blank, the mode of playing pin with boring is fixed together two mold blank location;
Two mold blank that (4) will fix are fixed on the Digit Control Machine Tool, will lead the mud orifice plate up in the time of fixedly;
(5) require to punch programming according to Design of Dies in Digit Control Machine Tool, and two mold blank that combine are carried out the punching first time, this time the degree of depth of punching is: greater than the thickness of leading the mud orifice plate, less than the degree of depth of leading the mud hole;
(6) after punching is finished for the first time, not moving under the prerequisite of conventional mold blank, remove the mud guiding plate of accomplishing fluently through hole;
(7) according to for the first time duplicate punching location, revise the degree of depth of punching for the second time, the degree of depth of punching for the second time=lead the mud hole depth-degree of depth of punching the first time is carried out the punching programming second time;
(8) conventional mold blank is carried out beating the blind hole operation second time;
(9) after punching is finished for the second time, take off conventional mold blank, two mold blank are put into heat-treatment furnace together, carry out hardening heat and process, heat treatment temperature is between 600-800 degree, and the blank intensity after the processing is between Rockwell hardness 30-60HRC;
(10) the conventional mold blank that heat treatment is good is fixed on the spark discharge cutting off machine, requires conventional mold blank blind hole is led to the line cutting processing that face carries out mud guiding slot according to Design of Dies, and mud guiding slot and blind hole are connected;
(11) after mud guiding slot cutting is finished, conventional mould is taken off, will lead the mud orifice plate and conventional mould is fixed together according to the mode of step (3), finish the manufacturing of whole mould.
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| CN2012103427870A CN102862037A (en) | 2012-09-17 | 2012-09-17 | Preparation method of ultralarge high-pore-density honeycomb ceramic mold |
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| CN2012103427870A CN102862037A (en) | 2012-09-17 | 2012-09-17 | Preparation method of ultralarge high-pore-density honeycomb ceramic mold |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289882A (en) * | 2014-08-05 | 2015-01-21 | 宁波富信模胚有限公司 | Method for machining hoisting ring threaded hole in die |
| CN104289881A (en) * | 2014-08-05 | 2015-01-21 | 宁波富信模胚有限公司 | Efficient and precise machining method for plastic mold hanging ring threaded hole |
| CN104493448A (en) * | 2014-10-27 | 2015-04-08 | 刘楠 | Mold surface subsection machining method of aircraft composite material forming mold |
| 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 |
| CN106045551A (en) * | 2016-05-24 | 2016-10-26 | 南京柯瑞特种陶瓷股份有限公司 | Method for preparing large-diameter thin-wall honeycomb ceramic carrier |
| CN109879659A (en) * | 2018-12-28 | 2019-06-14 | 上海中盟石油天然气有限公司 | The production method for being sintered PDC drill bit ceramic mold |
| 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 |
| CN115229457A (en) * | 2022-09-19 | 2022-10-25 | 云南菲尔特环保科技股份有限公司 | Processing method of large and small hole honeycomb structure body extrusion die |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289882A (en) * | 2014-08-05 | 2015-01-21 | 宁波富信模胚有限公司 | Method for machining hoisting ring threaded hole in die |
| CN104289881A (en) * | 2014-08-05 | 2015-01-21 | 宁波富信模胚有限公司 | Efficient and precise machining method for plastic mold hanging ring threaded hole |
| CN104289881B (en) * | 2014-08-05 | 2016-11-02 | 宁波富信模胚有限公司 | The high-efficiency and precision processing method of plastic mold suspension ring screw |
| CN104289882B (en) * | 2014-08-05 | 2016-11-09 | 宁波富信模胚有限公司 | The processing method of mould upper lift ring screw |
| CN104493448A (en) * | 2014-10-27 | 2015-04-08 | 刘楠 | Mold surface subsection machining method of aircraft composite material forming mold |
| CN104493448B (en) * | 2014-10-27 | 2017-05-03 | 东北林业大学 | Mold surface subsection machining method of aircraft composite material forming mold |
| 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 |
| CN106045551A (en) * | 2016-05-24 | 2016-10-26 | 南京柯瑞特种陶瓷股份有限公司 | Method for preparing large-diameter thin-wall honeycomb ceramic carrier |
| CN109879659A (en) * | 2018-12-28 | 2019-06-14 | 上海中盟石油天然气有限公司 | The production method for being sintered PDC drill bit ceramic mold |
| 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 |
| CN115229457A (en) * | 2022-09-19 | 2022-10-25 | 云南菲尔特环保科技股份有限公司 | Processing method of large and small hole honeycomb structure body extrusion die |
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Application publication date: 20130109 |