CN103553595A - Ceramic powder injection moulding raw material and ceramic power injection moulding method - Google Patents
Ceramic powder injection moulding raw material and ceramic power injection moulding method Download PDFInfo
- Publication number
- CN103553595A CN103553595A CN201310491556.0A CN201310491556A CN103553595A CN 103553595 A CN103553595 A CN 103553595A CN 201310491556 A CN201310491556 A CN 201310491556A CN 103553595 A CN103553595 A CN 103553595A
- Authority
- CN
- China
- Prior art keywords
- degree
- ceramic powder
- injection moulding
- blank
- raw material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Producing Shaped Articles From Materials (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention provides a ceramic powder injection moulding raw material. The ceramic powder injection moulding raw material is prepared from the following components by weight percent: 89-89.5% of ceramic powder, 4.32-5.4% of paraffin, 1.62-2.43% of stearic acid wax, 1.45-1.61% of high-density polyethylene, 0.54-0.86% of dibutyl phthalate and 1.45-1.61% of low-density polyethylene. The invention further provides a ceramic power injection moulding method by utilizing the raw material. According to the ceramic powder injection moulding raw material and the ceramic power injection moulding method disclosed by the invention, the larger strength of the obtained ceramic products can be ensured, the obtained ceramic products are unlikely to be broken, the density of the products is higher and the porosity is uniform.
Description
Technical field
The present invention relates to a kind of ceramic powder injection moulding raw material and ceramic powder injection molding forming method.
Background technology
Ceramic powder injection molding process is a kind of novel manufacturing process technology that ceramic powder is combined with plastic cement injection molding technique.It is small-sized, accurate, complicated and have a ceramic part of property requirement that this Technology be applicable to be produced in enormous quantities.The primary process of this technique is: ceramic powder and organic binder bond are uniformly mixed into as having the material of hot-fluid distortion, then the die cavity that adopts injector injection to have part shape forms blank, again through deviating from binding agent, and high temperature sintering, make ceramic high compaction become goods, can also carry out post-processed if desired.
The ceramic product of producing by above-mentioned ceramic powder injection molding process, generally can obtain higher hardness, in order to production normal domestic use sintex etc., still can satisfy the demand, but the physical strength of such ceramic product is general, fragility is larger, easily breaks into pieces.
And owing to must deviating from caking agent in technique, therefore in product, must there are a lot of small holes, the general use long period, product surface easily absorbs the material color of contact with it and variable color, but the ceramic product that general ceramic powder injection molding process is produced is considered discoloration problem very less, so the micro-pore in these products is all pockety, and it is also inhomogeneous that the consequence causing is that product is contaminated color, use for some time rear surface mottled unbearably, outward appearance is very poor.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of ceramic powder injection moulding raw material and ceramic powder injection molding forming method, to reduce or to avoid problem noted earlier.
Specifically, the invention provides a kind of ceramic powder injection moulding raw material and ceramic powder injection molding forming method, the ceramic product obtaining with this possesses larger intensity, be difficult for breaking into pieces, and product density is higher, and porous nickel.
For solving the problems of the technologies described above, the present invention proposes a kind of ceramic powder injection moulding raw material, by the component of following weight percent, formed:
Ceramic powder 89.00%～89.50%;
Paraffin 4.32%～5.40%;
Stearic acid wax 1.62%～2.43%;
High density polyethylene(HDPE) 1.45%～1.61%;
Dibutyl phthalate (DBP) 0.54%～0.86%;
Low Density Polyethylene 1.45%～1.61%.
Preferably, the tetragonal zirconia polycrystal ceramic powder that described ceramic powder is stabilized with yttrium oxide.
Preferably, the nanometer scale ceramics powder of described ceramic powder for adopting hydrolysis method or chemical precipitation method to make, particle diameter is 100～150 nanometers, preferably 110～140 nanometers, more preferably 125 nanometers.
Preferably, the purity of described ceramic powder is 98.5%～99.8%, preferably 99%～99.4%, more preferably 99.2%.
Preferably, in described ceramic powder, the mole percent level of yttrium oxide is 2.8-3.2%.
Preferably, described paraffin replaces to Microcrystalline Wax.
The present invention also provides a kind of ceramic powder injection molding forming method, and described method comprises the steps:
Raw material mixes: above-mentioned ceramic powder injection moulding raw material is uniformly mixed into injection moulding material;
Injection moulding: described injection moulding material injection moulding is formed to blank;
Slough paraffin: described blank is soaked in the kerosene that temperature is 40～50 degree, and constant temperature soaks 4～6 hours, guarantees that in described blank, more than 95% paraffin is dissolved in kerosene;
Degreasing: the blank of sloughing after paraffin is put into sintering oven, from normal temperature state, according to per minute intensification 1.1 degree, rise to 200 degree, keep 200 degree 3 hours, according to per minute intensification 1.1 degree, rise to 400 degree again, keep 400 degree 3 hours, finally according to per minute intensification 1.1 degree, rise to 600 degree, keep 600 degree 3 hours, then naturally cool to room temperature;
Sintering: by the blank after degreasing, be warming up to 1200～1500 degree and sinter ceramic product in sintering oven.
Preferably, in described raw material mixing step, described raw material, at the temperature of 200～250 degree, is preferably to 230 degree～240 degree, ceaselessly stirs other raw material parcel that ceramic powder is fully melted.
Preferably, in described sintering step, from normal temperature state, in 1 hour, be evenly warming up to 100 degree, keep 100 degree 0.5 hour; Then in 6 hours, be evenly warming up to 450 degree, keep 450 degree 0.5 hour; Then in 5 hours, be evenly warming up to 800 degree, keep 800 degree 0.5 hour; Then in 4 hours, be evenly warming up to 1000 degree, keep 1000 degree 0.5 hour; Then in 4 hours, be evenly warming up to 1200 degree, keep 1200 degree 0.5 hour; Then in 4 hours, be evenly warming up to 1450 degree, keep 1450 degree 4 hours; Then uniform decrease in temperature to 1000 degree in 6 hours; Finally naturally cool to room temperature.
Preferably, described in slough paraffin rapid in, described blank is piled up and is soaked in kerosene groove, described kerosene groove is placed in to water-bath and is heated to 40 degree and keeps temperature-resistant.
Preferably, described method further comprises following blank detecting step:
Select a blank in the described blank that not yet removes paraffin of batch, this blank integral body is immersed in ink, soak at room temperature 4～6 hours, wherein the color of ink used is different from the color of described blank itself;
Described blank after soaking is pulled out from described ink, with clear water, described blank surface washing is clean, if add up the ratio that area that the surface color of described blank is identical with the color of described blank itself accounts for the total area, surpass 90%, the described blank interior solid that this batch is described is even, and finally the described structural ceramics product of acquisition is up-to-standard.
Ceramic powder injection moulding raw material provided by the present invention and ceramic powder injection molding forming method, can guarantee that the ceramic product obtaining possesses larger intensity, be difficult for breaking into pieces, and product density be higher, and porous nickel.
Embodiment
The invention provides a kind of ceramic powder injection moulding raw material and ceramic powder injection molding forming method, described method is utilized the disclosed raw material production ceramic product of following embodiment, be applicable to produce in enormous quantities small-sized, accurate, complicated and has a ceramic part of property requirement.
Embodiment 1
An injection moulding raw material, is comprised of the component of following weight percent:
Ceramic powder 89.00%;
Paraffin 5.40%;
Stearic acid wax (SA) 1.62%;
High density polyethylene(HDPE) (HDPE) 1.61%;
Dibutyl phthalate (DBP) (DBP) 0.86%;
Low Density Polyethylene (LDPE) 1.51%.
Wherein, can to adopt major name be tetragonal zirconia polycrystal pottery (being abbreviated as Y-TZP) powder of stabilized with yttrium oxide to described ceramic powder.In a preferred embodiment, the nanometer scale ceramics powder of described ceramic powder for adopting hydrolysis method or chemical precipitation method to make, particle diameter is 100.In a preferred embodiment, the purity of described ceramic powder is 98.5%.In a preferred embodiment, in described ceramic powder, the mole percent level of yttrium oxide is 2.8%.
Wherein, paraffin is used as organic binder bond on the one hand, and another effect is the mobility that increases raw material integral body, and it is poor that content is crossed low flow, normally injection moulding; After too high levels is sloughed paraffin, product hole is excessive, and when intensity variation and product sintering, volume change is too large, easily cracks.
Paraffin another name, for solid paraffin and mineral wax, is solid-state alkylating mixture.Paraffin is the solid crystal product putting forward from oil, by multiple hydrocarbon polymer, is mainly that normal alkane forms, and also contains isoparaffin, naphthenic hydrocarbon and a small amount of aromatic hydrocarbon.The carbonatoms of paraffin grade wax is generally 22～36, and boiling spread is 300～550 ℃.Along with increasing of the component of paraffin, boiling point, fusing point, the normal paraffin of composition reduces, and isoparaffin increases.Pure paraffin is white, and without tasteless, impure paraffin is yellow.In the present embodiment, can adopt the paraffin of 58～60 trades mark.
In a specific embodiment of the present invention, can replace paraffin with Microcrystalline Wax and use, with this, obtain better product performance.Microcrystalline Wax is the same with paraffin, all from oil, extract, and its difference is that paraffin is from petroleum distillation cut out, and Microcrystalline Wax is to separate in the residual oil staying from petroleum distillation.Microcrystalline Wax was originally ceresine, and this is because people once exploited natural ceresine ore deposit before over half a century.The main component of Microcrystalline Wax be molecular weight larger, with naphthenic hydrocarbon and the aromatic hydrocarbon of longer carbochain.So be called " Microcrystalline Wax ", be because can find out significantly that under the microscope its crystallization is more much smaller than the crystallization of paraffin.The crystal habit of paraffin is generally larger-size thin slice, and Microcrystalline Wax is generally to consist of more tiny needle-like or granular crystal.This just makes their character have obvious difference, and paraffin is fragility, is easy to fracture after stressed and even pulverizes; And Microcrystalline Wax hardness is little, snappiness is fine, and stressed rear easy distortion is not easily broken.
Due to the difference of its molecular weight and molecular structure, make by Microcrystalline Wax as the plasticizing intensity of the blank of binding agent higher than the blank as binding agent by paraffin, the fragility of blank weakens and is easy to carrying and code-disc.Be more conducive to like this processing and the operation of the middle process after blank is made, improve the yield rate of processing procedure.
Due to the difference of its making technology, the purity of Microcrystalline Wax, far above the purity of paraffin, reduces the impurity component of bringing into due to binding agent, and after degreasing, the purity of ceramic powder improves, and has reduced the fraction defective that after sintering, product contains impurity.
The present invention also provides a kind of ceramic powder injection molding forming method, and described method comprises the steps:
Raw material mixes: above-mentioned ceramic powder injection moulding raw material is uniformly mixed into injection moulding material.In a preferred embodiment, described raw material, at the temperature of 200～250 degree, is preferably to 230 degree～240 degree, ceaselessly stirs other raw material parcel that ceramic powder is fully melted.
Injection moulding: described injection moulding material injection moulding is formed to blank.In a preferred embodiment, injection temperature is 250 degree.
Slough paraffin: described blank is soaked in the kerosene that temperature is 40～50 degree, and constant temperature soaks 4～6 hours, guarantees that in described blank, more than 95% paraffin is dissolved in kerosene.In a preferred embodiment, blank can be piled up and be soaked in kerosene groove, kerosene groove is placed in to water-bath and be heated to 40 degree and keep temperature-resistant.
Degreasing: the blank of sloughing after paraffin is put into sintering oven, from normal temperature state, according to per minute intensification 1.1 degree, rise to 200 degree, keep 200 degree 3 hours, according to per minute intensification 1.1 degree, rise to 400 degree again, keep 400 degree 3 hours, finally according to per minute intensification 1.1 degree, rise to 600 degree, keep 600 degree 3 hours, then naturally cool to room temperature.
Sintering: by the blank after degreasing, be warming up to 1200～1500 degree and sinter ceramic product in sintering oven.In a preferred embodiment, in this sintering step, from normal temperature state, in 1 hour, be evenly warming up to 100 degree, keep 100 degree 0.5 hour; Then in 6 hours, be evenly warming up to 450 degree, keep 450 degree 0.5 hour; Then in 5 hours, be evenly warming up to 800 degree, keep 800 degree 0.5 hour; Then in 4 hours, be evenly warming up to 1000 degree, keep 1000 degree 0.5 hour; Then in 4 hours, be evenly warming up to 1200 degree, keep 1200 degree 0.5 hour; Then in 4 hours, be evenly warming up to 1450 degree, keep 1450 degree 4 hours; Then uniform decrease in temperature to 1000 degree in 6 hours; Finally naturally cool to room temperature.
First aforesaid method of the present invention sloughs paraffin for a long time by kerosene, and while having avoided sintering, paraffin volatilization causes hole excessive and inhomogeneous, has improved the intensity of product, be difficult for breaking into pieces, and product density is higher, and porous nickel.
In other defatting step, what adopt is the low temperature flow process that heats up gradually, at the low temperature that reaches tens hours, heat up, in insulating process, make the organic binder bond outside paraffin slowly melt, ooze out blank surface, avoid high temperature sintering to make these organism gasifications produce a large amount of irregular pores, provide and improved the intensity of making product, and product density is higher, porous nickel.
Last sintering step can adopt the sintering step of conventional ceramic product, also can adopt preferred sintering step.Wherein, preferred sintering step can progressively heat up, and avoids product uneven pore, the crackle etc. of producing that are heated.
Although because passed through the step of sloughing paraffin and degreasing, also likely there are some organic binder bonds in blank, the too high pore of gasification generation suddenly that easily makes it of disposable intensification.In addition, due to through after sloughing paraffin and defatting step, it is inevitable in blank, having hole, the consequence causing is like this in sintering step, there is a process that expand into contraction in these holes, the relative blank of last product, on volume, can there is more than 20% variation, therefore, if sintering temperature, temperature-rise period are improper, these holes can produce and much be difficult for the crackle discovered, cause product strength to decline, cause hole inhomogeneous simultaneously, density is poor, easily contaminate color rear surface mottled, visual perception is worsened.
Above-mentioned raw materials of the present invention and method are particularly useful for producing for electronic product, case member such as mobile phone, panel computer etc., such as camera retainer, bellmouth orifice decoration, volume adjusting button etc., these parts need stressed for a long time, and be easily subject to human sweat's dip-dye, if the not high easy fracture of intensity, the poor color of also easily contaminating of compactness, the inhomogeneous meeting of hole causes surface mottled.Therefore, raw material provided by the present invention and method can overcome above-mentioned defect completely.
Further, each step from above-mentioned ceramic powder injection molding forming method, remove caking agent (removing paraffin and skimming processes) and need to spend tens hours, high temperature sintering need to spend about 30 hours, and the process-cycle of these two steps is very long, and need to expend a large amount of energy in order to blank is carried out to sintering, if can quality product be detected in this process, once pinpoint the problems, just can save subsequent process steps, greatly save energy consumption, reduced cost.That is to say, more existing forming methods, as there is defect in fruit product, can only be after procedure of processing all complete, or even could find after product is used after a while, now destroying product is also that It dones't help the situation.
Therefore,, in the above-mentioned ceramic powder injection molding forming method of the present invention, the step that further provides blank to detect, is described as follows:
Select in the described blank of not yet sloughing paraffin of batch first, this blank integral body is immersed in ink, soak at room temperature 4～6 hours, wherein the color of ink used is different from the color of described blank itself.
For example, common ceramic product is all white, the original color of ceramic powder namely, other organic adhesive etc. is colourless substantially, if contain impurity, the blank obtaining will mix the color of some impurity, is light gray or faint yellow, has once in a while some black particle things and is clipped in therein.Ink color is normally dark, the fountain pen ink of selling on market is substantially black, blueness or red, for ease of distinguishing, adopt blueness or red ink to be advisable, black particle thing in black ink and blank is not easy to distinguish, and blank contaminate after black ink may gray, be not easy to separate with the grey area of itself.
Afterwards the described blank after soaking is pulled out from described ink, with clear water, described blank surface washing is clean, if accounting for the ratio of the total area, the area that the surface color of described blank is identical with the color of described blank itself surpasses 90%, illustrate that described blank interior solid is even, finally the ceramic product of acquisition is up-to-standard.
For example, white blank was soaked in red ink after 4～6 hours, if there is loose defect in blank inside, exist the part of defect will be easy to contaminate into red, interior solid uniformly part still can present white, if contaminate into the ratio that the area of red part accounts for the total area, surpass 10%, if the area that namely described surface color is identical with the color of described blank itself accounts for the ratio of the total area and is less than 90%, clearly the loose part of blank inside is too many, finally makes quality after product and will be difficult to guarantee.Therefore, can in advance the blank of this batch be scrapped, also just not need the steps such as high temperature sintering of follow-up high energy consumption, greatly save cost.
Also have a kind of situation, that is exactly that blank inside is all very even, and after soaking, described surface color is partial to described ink color, and described blank internal defect is described, finally the ceramic product of acquisition is off quality.For example, the blank of white is immersed in blue ink, and last whole blank has all become blueness, illustrates that blank is very loose generally, and last quality product is also difficult to guarantee.That is to say, the color of blank surface color deflection ink is darker, illustrates that described blank density is lower; Color approaches original white and more illustrates that its density is high.
Above-mentioned this situation in fact also often occurs, if that is exactly, time of soaking was over 6 hours, even if blank itself is even compact very also, because pottery has self-cleaning ability, through long-time, soak, ink finally also can enter by the gap between organic adhesive or ceramic powder blank inside, and causing cannot be by soaking the quality of the mode testing product of ink.Or, if the deficiency of time soaking 4 hours, exist the part of defect owing to also having little time abundant dip-dye, it is qualified tending to cause error judgement quality product, therefore soak time of the present invention is creative:, the longer the better for not simply immersing, or the time of soaking, but need to select an interval range, this is that those skilled in the art are difficult to imagination acquisition.
In addition, those skilled in the art are to be understood that, because blank detecting step of the present invention belongs to destructive, detect, can not implement same detection to the product of whole batch, can only inspect by random samples, above-described embodiment adopts is that a sample in same batch is inspected by random samples, certainly, also can inspect by random samples a plurality of samples, then statistics be analyzed, average or consider the modes such as statistical variance, the quality of judgement product such as the method that adopts conventional mathematical analysis.
Embodiment 2
An injection moulding raw material, is comprised of the component of following weight percent:
Ceramic powder 89.50%;
Paraffin 4.32%;
Stearic acid wax 2.13%;
High density polyethylene(HDPE) 1.60%;
Dibutyl phthalate (DBP) 0.85%;
Low Density Polyethylene 1.60%.
Wherein, can to adopt major name be tetragonal zirconia polycrystal pottery (being abbreviated as Y-TZP) powder of stabilized with yttrium oxide to described ceramic powder.In a preferred embodiment, the nanometer scale ceramics powder of described ceramic powder for adopting hydrolysis method or chemical precipitation method to make, particle diameter is 150 nanometers.In a preferred embodiment, the purity of described ceramic powder is 99.8%.In a preferred embodiment, in described ceramic powder, the mole percent level of yttrium oxide is 3.2%.
In the present embodiment, can adopt the paraffin of 58～60 trades mark, also can adopt Microcrystalline Wax to replace paraffin and obtain better product performance.
The ceramic powder injection molding forming method that the raw material of the present embodiment can be used in embodiment 1 equally carrys out preparing product, above-mentioned raw materials and method are equally applicable to produce for electronic product, such as the case member of mobile phone, panel computer etc., such as camera retainer, bellmouth orifice decoration, volume adjusting button etc.
Embodiment 3
An injection moulding raw material, is comprised of the component of following weight percent:
Ceramic powder 89.30%;
Paraffin 4.67%;
Stearic acid wax 2.43%;
High density polyethylene(HDPE) 1.45%;
Dibutyl phthalate (DBP) 0.54%;
Low Density Polyethylene 1.61%.
Wherein, can to adopt major name be tetragonal zirconia polycrystal pottery (being abbreviated as Y-TZP) powder of stabilized with yttrium oxide to described ceramic powder.In a preferred embodiment, the nanometer scale ceramics powder of described ceramic powder for adopting hydrolysis method or chemical precipitation method to make, particle diameter is 125 nanometers.In a preferred embodiment, the purity of described ceramic powder is 99.2%.In a preferred embodiment, in described ceramic powder, the mole percent level of yttrium oxide is 3.0%.
In the present embodiment, can adopt the paraffin of 58～60 trades mark, also can adopt Microcrystalline Wax to replace paraffin and obtain better product performance.
The ceramic powder injection molding forming method that the raw material of the present embodiment can be used in embodiment 1 equally carrys out preparing product, above-mentioned raw materials and method are equally applicable to produce for electronic product, such as the case member of mobile phone, panel computer etc., such as camera retainer, bellmouth orifice decoration, volume adjusting button etc.
Embodiment 4
An injection moulding raw material, is comprised of the component of following weight percent:
Ceramic powder 89.40%;
Paraffin 4.65%;
Stearic acid wax 2.30%;
High density polyethylene(HDPE) 1.50%;
Dibutyl phthalate (DBP) 0.70%;
Low Density Polyethylene 1.45%.
Wherein, can to adopt major name be tetragonal zirconia polycrystal pottery (being abbreviated as Y-TZP) powder of stabilized with yttrium oxide to described ceramic powder.In a preferred embodiment, the nanometer scale ceramics powder of described ceramic powder for adopting hydrolysis method or chemical precipitation method to make, particle diameter is 110 nanometers.In a preferred embodiment, the purity of described ceramic powder is 99%.In a preferred embodiment, in described ceramic powder, the mole percent level of yttrium oxide is 2.9%.
In the present embodiment, can adopt the paraffin of 58～60 trades mark, also can adopt Microcrystalline Wax to replace paraffin and obtain better product performance.
The ceramic powder injection molding forming method that the raw material of the present embodiment can be used in embodiment 1 equally carrys out preparing product, above-mentioned raw materials and method are equally applicable to produce for electronic product, such as the case member of mobile phone, panel computer etc., such as camera retainer, bellmouth orifice decoration, volume adjusting button etc.
Embodiment 5
An injection moulding raw material, is comprised of the component of following weight percent:
Ceramic powder 89.10%;
Paraffin 5.00%;
Stearic acid wax 2.22%;
High density polyethylene(HDPE) 1.53%;
Dibutyl phthalate (DBP) 0.60%;
Low Density Polyethylene 1.55%.
Wherein, can to adopt major name be tetragonal zirconia polycrystal pottery (being abbreviated as Y-TZP) powder of stabilized with yttrium oxide to described ceramic powder.In a preferred embodiment, the nanometer scale ceramics powder of described ceramic powder for adopting hydrolysis method or chemical precipitation method to make, particle diameter is 140 nanometers.In a preferred embodiment, the purity of described ceramic powder is 99.4%.In a preferred embodiment, in described ceramic powder, the mole percent level of yttrium oxide is 3.1%.
In the present embodiment, can adopt the paraffin of 58～60 trades mark, also can adopt Microcrystalline Wax to replace paraffin and obtain better product performance.
The ceramic powder injection molding forming method that the raw material of the present embodiment can be used in embodiment 1 equally carrys out preparing product, above-mentioned raw materials and method are equally applicable to produce for electronic product, such as the case member of mobile phone, panel computer etc., such as camera retainer, bellmouth orifice decoration, volume adjusting button etc.
Embodiment 6
An injection moulding raw material, is comprised of the component of following weight percent:
Ceramic powder 89.20%;
Paraffin 5.14%;
Stearic acid wax 1.90%;
High density polyethylene(HDPE) 1.48%;
Dibutyl phthalate (DBP) 0.80%;
Low Density Polyethylene 1.48%.
Wherein, can to adopt major name be tetragonal zirconia polycrystal pottery (being abbreviated as Y-TZP) powder of stabilized with yttrium oxide to described ceramic powder.In a preferred embodiment, the nanometer scale ceramics powder of described ceramic powder for adopting hydrolysis method or chemical precipitation method to make, particle diameter is 130 nanometers.In a preferred embodiment, the purity of described ceramic powder is 99.1%.In a preferred embodiment, in described ceramic powder, the mole percent level of yttrium oxide is 3.0%.
In the present embodiment, can adopt the paraffin of 58～60 trades mark, also can adopt Microcrystalline Wax to replace paraffin and obtain better product performance.
The ceramic powder injection molding forming method that the raw material of the present embodiment can be used in embodiment 1 equally carrys out preparing product, above-mentioned raw materials and method are equally applicable to produce for electronic product, such as the case member of mobile phone, panel computer etc., such as camera retainer, bellmouth orifice decoration, volume adjusting button etc.
Ceramic powder injection moulding raw material provided by the present invention and ceramic powder injection molding forming method, can guarantee that the ceramic product obtaining possesses larger intensity, be difficult for breaking into pieces, and product density be higher, and porous nickel.
Although it will be appreciated by those skilled in the art that the present invention is described according to the mode of a plurality of embodiment, not each embodiment only comprises an independently technical scheme.For the purpose of in specification sheets, so narration is only used to know; those skilled in the art should make specification sheets as a wholely to be understood, and regard technical scheme related in each embodiment as the mode that can mutually be combined into different embodiment understand protection scope of the present invention.
The foregoing is only the schematic embodiment of the present invention, not in order to limit scope of the present invention.Any those skilled in the art, not departing from equivalent variations, modification and the combination of doing under the prerequisite of design of the present invention and principle, all should belong to the scope of protection of the invention.
Claims (10)
1. a ceramic powder injection moulding raw material, is comprised of the component of following weight percent:
Ceramic powder 89.00%～89.50%;
Paraffin 4.32%～5.40%;
Stearic acid wax 1.62%～2.43%;
High density polyethylene(HDPE) 1.45%～1.61%;
Dibutyl phthalate (DBP) 0.54%～0.86%;
Low Density Polyethylene 1.45%～1.61%.
2. ceramic powder injection moulding raw material according to claim 1, is characterized in that, the tetragonal zirconia polycrystal ceramic powder that described ceramic powder is stabilized with yttrium oxide.
3. ceramic powder injection moulding raw material according to claim 2, it is characterized in that, the nanometer scale ceramics powder of described ceramic powder for adopting hydrolysis method or chemical precipitation method to make, particle diameter is 100～150 nanometers, preferably 110～140 nanometers, more preferably 125 nanometers.
4. ceramic powder injection moulding raw material according to claim 3, is characterized in that, the purity of described ceramic powder is 98.5%～99.8%, preferably 99%～99.4%, more preferably 99.2%.
5. according to the ceramic powder injection moulding raw material one of claim 2-4 Suo Shu, it is characterized in that, in described ceramic powder, the mole percent level of yttrium oxide is 2.8-3.2%.
6. ceramic powder injection moulding raw material according to claim 1, is characterized in that, described paraffin replaces to Microcrystalline Wax.
7. a ceramic powder injection molding forming method, described method comprises the steps:
Raw material mixes: the ceramic powder injection moulding raw material one of claim 1-6 Suo Shu is uniformly mixed into injection moulding material;
Injection moulding: described injection moulding material injection moulding is formed to blank;
Slough paraffin: described blank is soaked in the kerosene that temperature is 40～50 degree, and constant temperature soaks 4～6 hours, guarantees that in described blank, more than 95% paraffin is dissolved in kerosene;
Degreasing: the blank of sloughing after paraffin is put into sintering oven, from normal temperature state, according to per minute intensification 1.1 degree, rise to 200 degree, keep 200 degree 3 hours, according to per minute intensification 1.1 degree, rise to 400 degree again, keep 400 degree 3 hours, finally according to per minute intensification 1.1 degree, rise to 600 degree, keep 600 degree 3 hours, then naturally cool to room temperature;
Sintering: by the blank after degreasing, be warming up to 1200～1500 degree and sinter ceramic product in sintering oven.
8. method as claimed in claim 7, is characterized in that, in described raw material mixing step, described raw material, at the temperature of 200～250 degree, is preferably to 230 degree～240 degree, ceaselessly stirs other raw material parcel that ceramic powder is fully melted.
9. method as claimed in claim 7, is characterized in that, in described sintering step, from normal temperature state, is evenly warming up to 100 degree in 1 hour, keeps 100 degree 0.5 hour; Then in 6 hours, be evenly warming up to 450 degree, keep 450 degree 0.5 hour; Then in 5 hours, be evenly warming up to 800 degree, keep 800 degree 0.5 hour; Then in 4 hours, be evenly warming up to 1000 degree, keep 1000 degree 0.5 hour; Then in 4 hours, be evenly warming up to 1200 degree, keep 1200 degree 0.5 hour; Then in 4 hours, be evenly warming up to 1450 degree, keep 1450 degree 4 hours; Then uniform decrease in temperature to 1000 degree in 6 hours; Finally naturally cool to room temperature.
10. the method as described in one of claim 7-9, further comprises following blank detecting step:
Select a blank in the described blank that not yet removes paraffin of batch, this blank integral body is immersed in ink, soak at room temperature 4～6 hours, wherein the color of ink used is different from the color of described blank itself;
Described blank after soaking is pulled out from described ink, with clear water, described blank surface washing is clean, if add up the ratio that area that the surface color of described blank is identical with the color of described blank itself accounts for the total area, surpass 90%, the described blank interior solid that this batch is described is even, and finally the described structural ceramics product of acquisition is up-to-standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310491556.0A CN103553595B (en) | 2013-10-18 | 2013-10-18 | Ceramic powder injection moulding raw material and ceramic power injection moulding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310491556.0A CN103553595B (en) | 2013-10-18 | 2013-10-18 | Ceramic powder injection moulding raw material and ceramic power injection moulding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103553595A true CN103553595A (en) | 2014-02-05 |
| CN103553595B CN103553595B (en) | 2015-02-04 |
Family
ID=50008014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310491556.0A Active CN103553595B (en) | 2013-10-18 | 2013-10-18 | Ceramic powder injection moulding raw material and ceramic power injection moulding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103553595B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045360A (en) * | 2014-06-20 | 2014-09-17 | 廖文宏 | Forming and processing method for fine ceramic accessories |
| CN105198413A (en) * | 2015-10-26 | 2015-12-30 | 沈兴钟 | Manufacturing method of ceramic mosaic |
| CN105198412A (en) * | 2015-07-03 | 2015-12-30 | 王有才 | Zirconia ceramic mobile phone panel and preparation method thereof |
| CN106187253A (en) * | 2016-07-07 | 2016-12-07 | 安徽省德邦瓷业有限公司 | There is the preparation method of impact resistance ceramic product raw material |
| CN107043507A (en) * | 2017-03-06 | 2017-08-15 | 苏州沃尔兴电子科技有限公司 | It is a kind of can injection molding Ceramic composite material preparation method |
| CN108395224A (en) * | 2018-03-27 | 2018-08-14 | 苏州珂玛材料科技股份有限公司 | The injection moulding feedstock composition of aluminium oxide ceramics part, aluminium oxide ceramics part and preparation method thereof |
| CN108439942A (en) * | 2018-04-03 | 2018-08-24 | 中国地质大学（武汉） | A kind of 3D printing prepares the formula and method of artificial turquoise |
| CN111848185A (en) * | 2020-06-17 | 2020-10-30 | 东莞市唯美陶瓷工业园有限公司 | Temperature-adjusting slurry for reducing firing temperature of spot brick, spot brick and manufacturing method thereof |
| CN112453410A (en) * | 2020-10-19 | 2021-03-09 | 华北电力大学 | Annular metal-ceramic gradient material and preparation method thereof |
| CN113526951A (en) * | 2021-07-01 | 2021-10-22 | 北京赛乐米克材料科技有限公司 | Preparation method of sound cavity based on polycrystalline zirconium gem |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101423732A (en) * | 2007-10-29 | 2009-05-06 | 比亚迪股份有限公司 | Adhensive for ceramet material injection molding and preparation method thereof |
| CN101456743A (en) * | 2007-12-11 | 2009-06-17 | 王灿 | Alumina ceramic injection molding wax based polyethylene multi-polymer bonding agent method |
| CN101456742A (en) * | 2007-12-11 | 2009-06-17 | 王灿 | Alumina ceramic injection molding wax based polyethylene multi-polymer bonding agent |
| CN101857433A (en) * | 2010-05-13 | 2010-10-13 | 清华大学 | Method for preparing colored zirconium oxide ceramic component |
-
2013
- 2013-10-18 CN CN201310491556.0A patent/CN103553595B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101423732A (en) * | 2007-10-29 | 2009-05-06 | 比亚迪股份有限公司 | Adhensive for ceramet material injection molding and preparation method thereof |
| CN101456743A (en) * | 2007-12-11 | 2009-06-17 | 王灿 | Alumina ceramic injection molding wax based polyethylene multi-polymer bonding agent method |
| CN101456742A (en) * | 2007-12-11 | 2009-06-17 | 王灿 | Alumina ceramic injection molding wax based polyethylene multi-polymer bonding agent |
| CN101857433A (en) * | 2010-05-13 | 2010-10-13 | 清华大学 | Method for preparing colored zirconium oxide ceramic component |
Non-Patent Citations (1)
| Title |
|---|
| 赵子夫，唐利: "《精编和谐家居 天花》", 31 March 2012, 辽宁科学技术出版社 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045360A (en) * | 2014-06-20 | 2014-09-17 | 廖文宏 | Forming and processing method for fine ceramic accessories |
| CN104045360B (en) * | 2014-06-20 | 2015-07-22 | 廖文宏 | Forming and processing method for fine ceramic accessories |
| CN105198412B (en) * | 2015-07-03 | 2018-02-06 | 王有才 | A kind of zirconia ceramics mobile phone faceplate and preparation method thereof |
| CN105198412A (en) * | 2015-07-03 | 2015-12-30 | 王有才 | Zirconia ceramic mobile phone panel and preparation method thereof |
| CN105198413A (en) * | 2015-10-26 | 2015-12-30 | 沈兴钟 | Manufacturing method of ceramic mosaic |
| CN106187253A (en) * | 2016-07-07 | 2016-12-07 | 安徽省德邦瓷业有限公司 | There is the preparation method of impact resistance ceramic product raw material |
| CN107043507A (en) * | 2017-03-06 | 2017-08-15 | 苏州沃尔兴电子科技有限公司 | It is a kind of can injection molding Ceramic composite material preparation method |
| CN108395224A (en) * | 2018-03-27 | 2018-08-14 | 苏州珂玛材料科技股份有限公司 | The injection moulding feedstock composition of aluminium oxide ceramics part, aluminium oxide ceramics part and preparation method thereof |
| CN108439942A (en) * | 2018-04-03 | 2018-08-24 | 中国地质大学（武汉） | A kind of 3D printing prepares the formula and method of artificial turquoise |
| CN111848185A (en) * | 2020-06-17 | 2020-10-30 | 东莞市唯美陶瓷工业园有限公司 | Temperature-adjusting slurry for reducing firing temperature of spot brick, spot brick and manufacturing method thereof |
| CN111848185B (en) * | 2020-06-17 | 2022-10-21 | 东莞市唯美陶瓷工业园有限公司 | Temperature-adjusting slurry for reducing firing temperature of spot brick, spot brick and manufacturing method thereof |
| CN112453410A (en) * | 2020-10-19 | 2021-03-09 | 华北电力大学 | Annular metal-ceramic gradient material and preparation method thereof |
| CN113526951A (en) * | 2021-07-01 | 2021-10-22 | 北京赛乐米克材料科技有限公司 | Preparation method of sound cavity based on polycrystalline zirconium gem |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103553595B (en) | 2015-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103553595B (en) | Ceramic powder injection moulding raw material and ceramic power injection moulding method | |
| EP3318541B1 (en) | Glaze resistant to wax block bonding, ceramic resistant to wax block bonding and preparation process thereof | |
| CA2651705C (en) | Preparation process for ceramics, ceramics thus obtained and their use as a target for cathode sputtering | |
| US9919971B2 (en) | Zirconia sintered body and use thereof | |
| CN102959122A (en) | Method for producing sputtering target, and sputtering target | |
| CN107445474A (en) | High-refractive and high-dispersive optical glass, optical element and optical instrument | |
| Vendrell et al. | Effect of lanthanide doping on structural, microstructural and functional properties of K0. 5Na0. 5NbO3 lead-free piezoceramics | |
| CN113788620A (en) | Ceramic dry grain glaze and crystal diamond flashing ceramic tile and preparation method thereof | |
| CN103221572A (en) | Manufacture of high density indium tin oxide (ITO) sputtering target | |
| KR20170128479A (en) | Izo sintered compact sputtering target and method for producing same | |
| CN107207353A (en) | Sintered ceramic components and forming method thereof | |
| CN102531344A (en) | Method of manufacturing vitreous silica crucible, vitreous silica crucible | |
| CN107555990A (en) | A kind of whiteware | |
| CN103819927A (en) | Light-colored antistatic liquid crystal polymer composite material and preparation method thereof | |
| CN108623312A (en) | A kind of ceramic powders injection molding raw material and ceramic powders injection molding forming method | |
| KR20120038503A (en) | Tablet for vapor deposition and process for producing same | |
| Chen et al. | Effects of phase structure on up-conversion photoluminescence and dielectric performance in Er3+ doped (Bi0. 5Na0. 5) TiO3-BaTiO3 lead-free ceramics | |
| CN106810249B (en) | Solid electrolyte for oxygen battery sensor and preparation method thereof | |
| WO2009108298A3 (en) | Modified synthetic xenotime material, article comprising same and method for making the articles | |
| Kang et al. | Effect of sintering atmosphere on densification and dielectric characteristics in Sr0. 5Ba0. 5Nb2O6 ceramics | |
| FR3056208A1 (en) | COLORED FRITTED PRODUCT BASED ON ALUMINA AND ZIRCONIA | |
| KR101953652B1 (en) | Ashes powdered crystals and a method of manufacturing the same | |
| KR101179050B1 (en) | Method for producing pink colored zirconia ceramics | |
| KR101082383B1 (en) | Method for producing transparent color zirconia ceramics | |
| KR101071311B1 (en) | Process for producing yellow colored zirconia ceramics and zirconia ceramics thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |