CN104307902A - Injection molding method of ceramic die core of wire drawing die - Google Patents
Injection molding method of ceramic die core of wire drawing die Download PDFInfo
- Publication number
- CN104307902A CN104307902A CN201410595929.3A CN201410595929A CN104307902A CN 104307902 A CN104307902 A CN 104307902A CN 201410595929 A CN201410595929 A CN 201410595929A CN 104307902 A CN104307902 A CN 104307902A
- Authority
- CN
- China
- Prior art keywords
- injection moulding
- agitator
- temperature
- injection
- ceramic
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
-
- 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
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/24—Producing shaped prefabricated articles from the material by injection moulding
-
- 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
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
- B28B13/023—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities
- B28B13/0235—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities the feed box being provided with agitating means, e.g. stirring vanes to avoid premature setting of the moulding material
Abstract
The invention discloses an injection molding method of a ceramic die core of a wire drawing die. The injection molding method comprises the following steps: (a) selecting and preparing materials; (b) roughly mixing; (c) finely mixing; and (d) carrying out injection molding. The invention discloses the injection molding method of the ceramic die core of the wire drawing die. The molding method is reasonably-arranged in procedures and moderate in cost; the technological parameters of the die core in the aspects of selection and preparation, material mixing, injection molding and the like are properly set and the method is convenient to implement, so that the molded die core has good and stable comprehensive mechanical properties; and especially, the performances in the aspects of toughness and thermal stability are prominent, so that the use performance of the ceramic die core is improved.
Description
Technical field
The present invention relates to a kind of forming method of die core of wire-drawing die, particularly relate to a kind of injection moulding method of ceramic bull block core rod, belong to technology of die manufacturing field.
Background technology
Wire drawing die is the instrument carrying out metal wire (rod) material extending, and its body is primarily of steel bushing and core rod composition, and steel bushing is selected as stainless steel usually, and core rod can select the material such as carbide alloy, steel alloy, natural diamond, artificial diamond, pottery.
The shape of die core of wire-drawing die is comparatively complicated, size is little, formed precision requires higher.Ceramic material has good wear-resisting, high temperature resistant, corrosion-resistant and high strength, preparation cost is moderate, but the ability of existing ceramic mold core in heat shock resistance and toughness also Shortcomings, sintering aft-loaded airfoil difficulty, therefore, the dimensional accuracy of the die core of wire-drawing die of ceramic material will must be guaranteed when shaping.Injection moulding a kind ofly compares the moulding process being suitable for preparing die core of wire-drawing die, its principle is by ceramic powder and thermoplasticity organic carrier matched, after mixing, granulation, add in injector and be injected into mold cavity, obtain through techniques such as filling, pressurize, cooling and the demouldings required containing moulding base substrate, then be placed in debinding furnace, slowly heat pressurization, get rid of organic carrier (i.e. degreasing), obtain ceramic body.This method is transplanted from plastics industry and is come, and Design of Dies and injection molding resemble in many points, and is particularly suitable for preparation complex-shaped, accurate in size ceramic body.But the injection molding technique of existing die core of wire-drawing die, the parameter apolegamy in raw material choice, batch mixing and injection operation etc. and implementing process perfect not enough, the performance of obtained die core of wire-drawing die also has the space of lifting.
Summary of the invention
For the demand, the invention provides a kind of injection moulding method of ceramic bull block core rod, this forming method procedure arrangement is reasonable, be easy to implement, moderate cost, core rod technological parameter in material apolegamy, batch mixing and injection moulding etc. arranges proper, and obtained core rod comprehensive mechanical property is excellent, and the performance especially in toughness and heat endurance is particularly outstanding.
The present invention is a kind of injection moulding method of ceramic bull block core rod, and this injection moulding method comprises the steps: that a) selection is prepared burden, and b) slightly mixes, c) carefully mixes, d) injection moulding.
In a preferred embodiment of the present invention, in described step a), material comprises major ingredient and binding agent, and both percentage composition ratios are: 80%-85%:15%-20%; Wherein, major ingredient is by Al2O3 powder, flexibilizer ZrO2, activating agent AS, is the powder of 1.8-2.2um by particle diameter obtained after ball mill process; The main component of binding agent and percentage composition ratio thereof are: thermoplastic resin 18%-20%, plasticiser 4%-5%, lubricant 75%-78%, surfactant 1%-1.5%.
In a preferred embodiment of the present invention, in described step b), technical process is as follows: first, pours the lubricant in binding agent into agitator, and agitator temperature controls at 100 DEG C-110 DEG C; Then, pour the plastic resin in binding agent, plasticiser and surfactant into agitator successively, uniform stirring 10-12 minute, agitator temperature controls at about 100 DEG C; Finally, divided by major ingredient and pour into for three times, mass ratio is 2:1:1, and the time interval is 10 minutes, and agitator temperature remains unchanged, and agitator rotating speed is 200-220r/min, continues to stir discharging after 25-30 minute after major ingredient adds.
In a preferred embodiment of the present invention, in described step c), equipment choosing twin screw compounder, motor power (output) is 5.kw, and spiro rod length is 1m, and diameter is 24mm, and barrel capacity is 3L, and rotating speed controls at 25-28r/min; The heating region of equipment is divided into four sections according to the difference of heating-up temperature, its temperature is not from front to back: 130 DEG C, 120 DEG C, 110 DEG C and 110 DEG C.
In a preferred embodiment of the present invention, in described step d), the useful load of injector can be set as 53%, 55% and 57% Three models, and the epimere temperature of injection process injector and the corresponding useful load of hypomere temperature are set to respectively: 95/105 DEG C, 85/95 DEG C and 95/100 DEG C; In injection process, injection pressure controls at 65-70MPa, and the injection dwell time is 10-12 second, and cool time was 10 seconds.
Present invention is disclosed a kind of injection moulding method of ceramic bull block core rod, this forming method procedure arrangement is reasonable, moderate cost, core rod technological parameter in material apolegamy, batch mixing and injection moulding etc. arrange proper, be easy to implement, formation die core is made to have excellent and stable comprehensive mechanical property, especially the performance in toughness and heat endurance is given prominence to, and improves the serviceability of ceramic mold core.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the process figure of the injection moulding method of embodiment of the present invention ceramic bull block core rod.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Fig. 1 is the process figure of the injection moulding method of embodiment of the present invention ceramic bull block core rod; This injection moulding method comprises the steps: that a) selection is prepared burden, and b) slightly mixes, c) carefully mixes, d) injection moulding.
Embodiment 1
The specific operation process of the injection moulding method of the ceramic bull block core rod that the present invention mentions is as follows:
A) selection batching, material comprises major ingredient and binding agent, and both percentage composition ratios are: 80%:20%; Wherein, major ingredient is by Al2O3 powder, flexibilizer ZrO2, activating agent AS, is the powder of 1.8-2.2um by particle diameter obtained after ball mill process; The main component of binding agent and percentage composition ratio thereof are: thermoplastic resin 19%, plasticiser 4%, lubricant 76%, surfactant 1%; Plastic resin selects polystyrene, and dibutyltitanate selected by plasticiser, and zinc stearate selected by lubricant, and vegetable oil selected by surfactant;
B) slightly mix, technical process is as follows: first, pours the lubricant in binding agent into agitator, and agitator temperature controls, at about 100 DEG C, lubricant to be melted; Then, pour the plastic resin in binding agent, plasticiser and surfactant into agitator successively, uniform stirring 12 minutes, agitator temperature controls, at about 100 DEG C, to guarantee that binding agent fully merges; Finally, divided by major ingredient and pour into for three times, mass ratio is 2:1:1, and the time interval is 10 minutes, and agitator temperature remains unchanged, and agitator rotating speed is 200r/min, and major ingredient continues stirring after 30 minutes, discharging after adding;
C) carefully mix, thin mixing device selects twin screw compounder, and motor power (output) is 5.kw, and spiro rod length is 1m, and diameter is 24mm, and barrel capacity is 3L, and rotating speed controls at 25r/min; The heating region of this equipment is divided into four sections according to the difference of heating-up temperature, its temperature is not from front to back: 130 DEG C, 120 DEG C, 110 DEG C and 110 DEG C;
D) injection moulding, the useful load of injector can be set as 53%, 55% and 57% Three models, and the epimere temperature of injection process injector and the corresponding useful load of hypomere temperature are set to respectively: 95/105 DEG C, 85/95 DEG C and 95/100 DEG C; In injection process, injection pressure controls at 65MPa, and the injection dwell time is 12 seconds, and cool time was 10 seconds.
Embodiment 2
The specific operation process of the injection moulding method of the ceramic bull block core rod that the present invention mentions is as follows:
A) selection batching, material comprises major ingredient and binding agent, and both percentage composition ratios are: 82%:18%; Wherein, major ingredient is by Al2O3 powder, flexibilizer ZrO2, activating agent AS, is the powder of 1.8-2.2um by particle diameter obtained after ball mill process; The main component of binding agent and percentage composition ratio thereof are: thermoplastic resin 18%, plasticiser 5%, lubricant 75.5%, surfactant 1.5%; Plastic resin selects cellulose acetate, plasticiser selected fatty acid ester, and paraffin selected by lubricant, and animal oil selected by surfactant;
B) slightly mix, technical process is as follows: first, pours the lubricant in binding agent into agitator, and agitator temperature controls, at about 110 DEG C, lubricant to be melted; Then, pour the plastic resin in binding agent, plasticiser and surfactant into agitator successively, uniform stirring 10 minutes, agitator temperature controls, at about 100 DEG C, to guarantee that binding agent fully merges; Finally, divided by major ingredient and pour into for three times, mass ratio is 2:1:1, and the time interval is 10 minutes, and agitator temperature remains unchanged, and agitator rotating speed is 220r/min, and major ingredient continues stirring after 25 minutes, discharging after adding;
C) carefully mix, thin mixing device selects twin screw compounder, and motor power (output) is 5.kw, and spiro rod length is 1m, and diameter is 24mm, and barrel capacity is 3L, and rotating speed controls at 26r/min; The heating region of this equipment is divided into four sections according to the difference of heating-up temperature, its temperature is not from front to back: 130 DEG C, 120 DEG C, 110 DEG C and 110 DEG C;
D) injection moulding, the useful load of injector can be set as 53%, 55% and 57% Three models, and the epimere temperature of injection process injector and the corresponding useful load of hypomere temperature are set to respectively: 95/105 DEG C, 85/95 DEG C and 95/100 DEG C; In injection process, injection pressure controls at 70MPa, and the injection dwell time is 10 seconds, and cool time was 10 seconds.
Present invention is disclosed a kind of injection moulding method of ceramic bull block core rod, be characterized in: this forming method procedure arrangement is reasonable, moderate cost, core rod technological parameter in material apolegamy, batch mixing and injection moulding etc. arrange proper, be easy to implement, formation die core is made to have excellent and stable comprehensive mechanical property, especially the performance in toughness and heat endurance is given prominence to, and improves the serviceability of ceramic mold core.
The above; be only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the technical scope disclosed by the present invention; the change can expected without creative work or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.
Claims (5)
1. an injection moulding method for ceramic bull block core rod, is characterized in that, this injection moulding method comprises the steps: that a) selection is prepared burden, and b) slightly mixes, c) carefully mixes, d) injection moulding.
2. the injection moulding method of ceramic bull block core rod according to claim 1, is characterized in that, in described step a), material comprises major ingredient and binding agent, and both percentage composition ratios are: 80%-85%:15%-20%; Wherein, major ingredient is by Al2O3 powder, flexibilizer ZrO2, activating agent AS, is the powder of 1.8-2.2um by particle diameter obtained after ball mill process; The main component of binding agent and percentage composition ratio thereof are: thermoplastic resin 18%-20%, plasticiser 4%-5%, lubricant 75%-78%, surfactant 1%-1.5%.
3. the injection moulding method of ceramic bull block core rod according to claim 1, is characterized in that, in described step b), technical process is as follows: first, pours the lubricant in binding agent into agitator, and agitator temperature controls at 100 DEG C-110 DEG C; Then, pour the plastic resin in binding agent, plasticiser and surfactant into agitator successively, uniform stirring 10-12 minute, agitator temperature controls at about 100 DEG C; Finally, divided by major ingredient and pour into for three times, mass ratio is 2:1:1, and the time interval is 10 minutes, and agitator temperature remains unchanged, and agitator rotating speed is 200-220r/min, continues to stir discharging after 25-30 minute after major ingredient adds.
4. the injection moulding method of ceramic bull block core rod according to claim 1, is characterized in that, in described step c), equipment choosing twin screw compounder, motor power (output) is 5.kw, and spiro rod length is 1m, diameter is 24mm, and barrel capacity is 3L, and rotating speed controls at 25-28r/min; The heating region of equipment is divided into four sections according to the difference of heating-up temperature, its temperature is not from front to back: 130 DEG C, 120 DEG C, 110 DEG C and 110 DEG C.
5. the injection moulding method of ceramic bull block core rod according to claim 1, it is characterized in that, in described step d), the useful load of injector can be set as 53%, 55% and 57% Three models, and the epimere temperature of injection process injector and the corresponding useful load of hypomere temperature are set to respectively: 95/105 DEG C, 85/95 DEG C and 95/100 DEG C; In injection process, injection pressure controls at 65-70MPa, and the injection dwell time is 10-12 second, and cool time was 10 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410595929.3A CN104307902A (en) | 2014-10-30 | 2014-10-30 | Injection molding method of ceramic die core of wire drawing die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410595929.3A CN104307902A (en) | 2014-10-30 | 2014-10-30 | Injection molding method of ceramic die core of wire drawing die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104307902A true CN104307902A (en) | 2015-01-28 |
Family
ID=52363291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410595929.3A Pending CN104307902A (en) | 2014-10-30 | 2014-10-30 | Injection molding method of ceramic die core of wire drawing die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104307902A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5087594A (en) * | 1988-12-24 | 1992-02-11 | Ngk Insulators, Ltd. | Ceramic material for injection molding and method of injection molding using the same |
| CN101733820A (en) * | 2008-11-13 | 2010-06-16 | 上海奇谋能源技术开发有限公司 | Die molding method for ceramic product |
| CN102009175A (en) * | 2010-10-08 | 2011-04-13 | 李亚东 | Manufacturing method of multilayer shell-core composite structural part |
| CN102153353A (en) * | 2010-12-15 | 2011-08-17 | 长沙理工大学 | Water-degreased adhesive system and injection molding method of ceramic component |
| CN103480675A (en) * | 2013-09-30 | 2014-01-01 | 苏州益群模具有限公司 | Usage method of thermal forming tool for wire-drawing die |
| CN103922747A (en) * | 2014-04-30 | 2014-07-16 | 郑州磨料磨具磨削研究所有限公司 | Injection molding formula and injection molding method for ceramic bond superhard material grinding tool |
-
2014
- 2014-10-30 CN CN201410595929.3A patent/CN104307902A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5087594A (en) * | 1988-12-24 | 1992-02-11 | Ngk Insulators, Ltd. | Ceramic material for injection molding and method of injection molding using the same |
| CN101733820A (en) * | 2008-11-13 | 2010-06-16 | 上海奇谋能源技术开发有限公司 | Die molding method for ceramic product |
| CN102009175A (en) * | 2010-10-08 | 2011-04-13 | 李亚东 | Manufacturing method of multilayer shell-core composite structural part |
| CN102153353A (en) * | 2010-12-15 | 2011-08-17 | 长沙理工大学 | Water-degreased adhesive system and injection molding method of ceramic component |
| CN103480675A (en) * | 2013-09-30 | 2014-01-01 | 苏州益群模具有限公司 | Usage method of thermal forming tool for wire-drawing die |
| CN103922747A (en) * | 2014-04-30 | 2014-07-16 | 郑州磨料磨具磨削研究所有限公司 | Injection molding formula and injection molding method for ceramic bond superhard material grinding tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10544294B2 (en) | Binder for injection moulding compositions | |
| CN104668565B (en) | Feedstock of Powder Injection Molding preparation method and powder injection-molded production method | |
| CN105131508B (en) | A kind of adhesive for powder injection forming, preparation method and applications method | |
| CN101844227B (en) | Application of adhesive for hard alloy injection molding | |
| WO2011087098A1 (en) | Sintering method | |
| CN101797645B (en) | Binder for micro-powder injection molding and application method thereof | |
| CN101643360A (en) | Method for manufacturing dentate special-shaped ceramic components by injection molding | |
| CN108676370A (en) | The non-photocuring modelling wax of 3D printing based on graphene and its synthetic method | |
| CN108607989A (en) | The ejection forming method of abnormal complex part | |
| CN102717081A (en) | Method for preparing miniature mold by powder micro injection forming method | |
| CN101564809B (en) | Preparation method of covered metal spare parts | |
| CN106670451A (en) | Formula and preparation method of copper alloy feed for powder injection molding | |
| CN104801706A (en) | Wax-based binder for metal powder injection molding | |
| WO2010135859A1 (en) | Accurate shaping method for metal ceramic material | |
| CN105062090A (en) | Special wax string for 3D printer as well as formula and production process thereof | |
| US11718736B2 (en) | Binder for injection moulding compositions | |
| CN109304461B (en) | High-hardness stainless steel feed and preparation method thereof, and high-hardness stainless steel blank and preparation method thereof | |
| CN104972129A (en) | Method for manufacturing iron-based alloy part | |
| JP2012161805A (en) | Ceramic core and method for manufacturing the same | |
| CN104307902A (en) | Injection molding method of ceramic die core of wire drawing die | |
| KR20150137172A (en) | Binder composition, feedstock for powder metallurgy and method of debinding the binder composition | |
| JP2021073341A (en) | Binder for injection moulding compositions | |
| Ibrahim et al. | Optimisation of processing condition using taguchi method on warpage for HDPE-clay composite | |
| Sotomayor et al. | Duplex stainless steel self-ligating Orthodontic Brackets by Micro-powder Injection Moulding | |
| JP2006257485A (en) | Composition to be injection-molded |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150128 |