JPH03193905A - Production of ceramic spinning nozzle - Google Patents
Production of ceramic spinning nozzleInfo
- Publication number
- JPH03193905A JPH03193905A JP33337489A JP33337489A JPH03193905A JP H03193905 A JPH03193905 A JP H03193905A JP 33337489 A JP33337489 A JP 33337489A JP 33337489 A JP33337489 A JP 33337489A JP H03193905 A JPH03193905 A JP H03193905A
- Authority
- JP
- Japan
- Prior art keywords
- ceramic
- spinning
- spinning nozzle
- nozzles
- injection molding
- 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
- 238000009987 spinning Methods 0.000 title claims abstract description 34
- 239000000919 ceramic Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 238000001746 injection moulding Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 5
- 229910052581 Si3N4 Inorganic materials 0.000 abstract description 7
- 238000000465 moulding Methods 0.000 abstract description 7
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 abstract description 7
- 239000000835 fiber Substances 0.000 abstract description 5
- 239000011230 binding agent Substances 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 229920001490 poly(butyl methacrylate) polymer Polymers 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- 229910010293 ceramic material Inorganic materials 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000011812 mixed powder Substances 0.000 description 4
- 238000012805 post-processing Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002166 wet spinning Methods 0.000 description 2
- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical group C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910001260 Pt alloy Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000000578 dry spinning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- JUWSSMXCCAMYGX-UHFFFAOYSA-N gold platinum Chemical compound [Pt].[Au] JUWSSMXCCAMYGX-UHFFFAOYSA-N 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Landscapes
- Producing Shaped Articles From Materials (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、化学繊維の紡糸に使用するセラミックス製紡
糸ノズルの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a ceramic spinning nozzle used for spinning chemical fibers.
化学繊維の紡糸方法としては、乾式紡糸、湿式紡糸、溶
融紡糸等がある。Examples of spinning methods for chemical fibers include dry spinning, wet spinning, and melt spinning.
これらの紡糸に用いられる紡糸ノズルは、一般に、ステ
ンレス鋼、白金、金−白金の合金等の金属によって作ら
れている。The spinning nozzles used in these spinning processes are generally made of metals such as stainless steel, platinum, and gold-platinum alloys.
しかし、金属製紡糸ノズルは、摩耗が激しいという欠点
があり、ノズル孔径がしだいに大きくなって均一な繊維
が得られない。又、湿式紡糸の場合、酸やアルカリに腐
食されやすい欠点がある。However, metal spinning nozzles have the disadvantage of severe wear, and the nozzle hole diameter gradually increases, making it impossible to obtain uniform fibers. In addition, wet spinning has the disadvantage that it is easily corroded by acids and alkalis.
このため、金属製紡糸ノズルは、寿命が短く、ノズル交
換頻度が多くなり生産性が悪くなる問題がある。For this reason, metal spinning nozzles have a short lifespan, have to be replaced frequently, and have a problem of poor productivity.
従来、かかる問題に対処するため、例えば第４図、第５
図及び第６図に示すように、カップ状の金属製紡糸バッ
ク１１の底部に設けた複数の孔１２に、プレス成形によ
って形成したセラミックス製紡糸ノズル１３をそれぞれ
嵌着した紡糸口金が知られている。Conventionally, in order to deal with such problems, for example, Figs.
As shown in FIG. 6 and FIG. 6, a spinneret is known in which ceramic spinning nozzles 13 formed by press molding are respectively fitted into a plurality of holes 12 provided at the bottom of a cup-shaped metal spinning bag 11. There is.
しかしながら、上記従来のセラミックス製紡糸ノズルは
、プレス成形によって形成されるため、放電加工による
ノズル孔の加工や研削加工による外周面の加工等の後加
工を多く必要とする。However, since the conventional ceramic spinning nozzle is formed by press molding, it requires a lot of post-processing, such as machining the nozzle hole by electrical discharge machining and machining the outer peripheral surface by grinding.
このため、製造コストが非常に高くなり、゛セラミック
ス製紡糸ノズルは、はとんど使用されていない。For this reason, manufacturing costs are extremely high, and ceramic spinning nozzles are rarely used.
そこで、本発明は、後加工を不要とし、製造コストを低
減し得るセラミックス製紡糸ノズルの製造方法の提供を
目的とする。Therefore, an object of the present invention is to provide a method for manufacturing a ceramic spinning nozzle that does not require post-processing and can reduce manufacturing costs.
前記課題を解決するため、本発明のセラミックス製紡糸
ノズルの製造方法は、カップ状の金属製紡糸バックの底
部に設けた複数の孔にそれぞれ嵌着されるセラミックス
製紡糸ノズルを、射出成形により形成する方法である。In order to solve the above problems, the method for manufacturing a ceramic spinning nozzle of the present invention involves forming ceramic spinning nozzles by injection molding, each of which is fitted into a plurality of holes provided at the bottom of a cup-shaped metal spinning bag. This is the way to do it.
上記手段においては、複雑な形状のものの形成が可能と
なる。With the above means, it is possible to form a complex shape.
セラミックス材料としては、耐摩耗性に優れているアル
ミナ、ジルコニア、窒化けい素、炭化けい素、サイアロ
ン等が用いられる。As the ceramic material, alumina, zirconia, silicon nitride, silicon carbide, sialon, etc., which have excellent wear resistance, are used.
以下、本発明の実施例を詳細に説明する。 Examples of the present invention will be described in detail below.
実施例 １
平均粒径０，１−のジルコニア粉末に酸化イツトリウム
を３ ｓｏＮ％添加し、アセトンを使用して２４時時間
式混合した。その後、アセトンを蒸発乾燥させて混合粉
末を得た。Example 1 3 soN% of yttrium oxide was added to zirconia powder having an average particle size of 0.1-, and the mixture was mixed 24 hours a day using acetone. Thereafter, acetone was evaporated to dryness to obtain a mixed powder.
この混合粉末１００重量部に対して、ワックス５重量部
、ポリメタクリル酸ブチル８重量部、エチレン−酢酸ビ
ニル共重合体４重量部、及びフタル酸ジブチル（可塑剤
）１，５重量部を加えて加圧型混練機により１５０℃の
温度で３０分間混練し、混線物を造粒して射出成形の原
料とした。To 100 parts by weight of this mixed powder, 5 parts by weight of wax, 8 parts by weight of polybutyl methacrylate, 4 parts by weight of ethylene-vinyl acetate copolymer, and 1.5 parts by weight of dibutyl phthalate (plasticizer) were added. The mixture was kneaded for 30 minutes at a temperature of 150° C. using a pressure kneader, and the mixture was granulated and used as a raw material for injection molding.
この原料を用い、第１図、第２図に示す形状の金型で射
出成形した。両図において１はスプルー２はランナー、
３はゲートで、４は４個のキャビティであり、各キャビ
ティ４内には、ノズル孔を形成する中子５が配置されて
いる。成形条件は、射出温度１５０℃、射出圧カフ００
ｋｇ／ｃ−とした。Using this raw material, injection molding was performed using a mold having the shape shown in FIGS. 1 and 2. In both figures, 1 is the sprue 2 is the runner,
3 is a gate, 4 is four cavities, and inside each cavity 4, a core 5 forming a nozzle hole is arranged. The molding conditions were: injection temperature 150°C, injection pressure cuff 00
kg/c-.
得られた成形体は、昇温速度１０℃／ｈで４５０℃まで
昇温し、この温度の空気中で２時間保持して脱バインダ
ー処理した。得られた脱脂体を空気中において１５００
℃の温度で２時間焼成し、第３図に示すように、外径３
．ｈ＋ｍｓ長さ４．０ｍｍ、吐出孔径０．２ｍｍのジル
コニア質セラミックス製紡糸ノズル６を得た。The obtained molded body was heated to 450° C. at a heating rate of 10° C./h and held in air at this temperature for 2 hours to remove the binder. The obtained degreased body was heated in air at 1500
℃ temperature for 2 hours, as shown in Figure 3, the outer diameter is 3.
．． A spinning nozzle 6 made of zirconia ceramics having a h+ms length of 4.0 mm and a discharge hole diameter of 0.2 mm was obtained.
実施例 ２
平均粒径０．７−の窒化けい素粉末１００重量部に対し
て焼結助剤である酸化イツトリウム５重量部と酸化アル
ミニウム３重量部を添加し、アセトンを使用して湿式混
合した。その後アトセンを乾燥蒸発させて混合粉末を得
た。Example 2 5 parts by weight of yttrium oxide and 3 parts by weight of aluminum oxide, which are sintering aids, were added to 100 parts by weight of silicon nitride powder with an average particle size of 0.7-, and wet-mixed using acetone. . Thereafter, atocene was dried and evaporated to obtain a mixed powder.
この混合粉末１００重量部に対して、ワックス４重量部
、ポリメタクリル酸ブチル１２重量部、ポリスチレン８
重量部、及びフタル酸ジブチル（可塑剤）２重量部を加
えて加圧型混練機により１６０℃の温度で３０分間混練
し、混線物を造粒して射出成形の原料とした。To 100 parts by weight of this mixed powder, 4 parts by weight of wax, 12 parts by weight of polybutyl methacrylate, 8 parts by weight of polystyrene.
parts by weight and 2 parts by weight of dibutyl phthalate (plasticizer) were added and kneaded for 30 minutes at a temperature of 160° C. using a pressure kneader, and the mixed wire material was granulated and used as a raw material for injection molding.
この原料を用い、第１図、第２図に示す形状とほぼ同様
の４個取りの金型で射出成形した。成形条件は、射出温
度１６０℃、射出圧力８００ｋｇ／ｃｊとした。Using this raw material, injection molding was carried out in a four-cavity mold having a shape substantially similar to that shown in FIGS. 1 and 2. The molding conditions were an injection temperature of 160° C. and an injection pressure of 800 kg/cj.
得られた成形体は、昇温速度７℃／ｈで６００℃まで昇
温し、この温度の窒化ガス雰囲気中で２吟間保持して脱
バインダー処理した。得られた脱脂体を窒素ガス雰囲気
中において１７８０℃の温度で２時間常圧焼成し、外径
２．５ｍｍ５長さ３．０龍、吐出孔径０．Ｌ＋ａｍの窒
化けい素セラミックス製紡糸ノズルを得た。The obtained molded body was heated to 600° C. at a heating rate of 7° C./h and held in a nitriding gas atmosphere at this temperature for 2 minutes to perform a binder removal treatment. The obtained degreased body was fired in a nitrogen gas atmosphere at a temperature of 1,780° C. for 2 hours under normal pressure to obtain an outer diameter of 2.5 mm, a length of 3.0 mm, and a discharge hole diameter of 0.5 mm. A silicon nitride ceramic spinning nozzle of L+am was obtained.
実施例１，２で得られたジルコニア質セラミックス製紡
糸ノズル６、窒化けい素質セラミックス製紡糸ノズルを
、それぞれカップ状の金属製紡糸パック（図示せず）の
底部に設けた複数の孔に、接合あるいは焼き嵌め等によ
って嵌着し、化学繊維の紡糸に使用したところ、耐摩耗
性、耐腐食性、寿命、製造コスト等は、他のセラミック
ス製のもの並びに金属製のものを併記する第１表に示す
ようになった。The zirconia ceramic spinning nozzle 6 and the silicon nitride ceramic spinning nozzle obtained in Examples 1 and 2 were each bonded to a plurality of holes provided at the bottom of a cup-shaped metal spinning pack (not shown). Alternatively, when it is fitted by shrink fitting etc. and used for spinning chemical fibers, the wear resistance, corrosion resistance, lifespan, manufacturing cost, etc. are as shown in Table 1, which also lists other ceramic products and metal products. It is now shown in
第 １ 表 ＊ 寿命は、金属の寿命を１とした場合の割合を示す。No. 1 table * Lifespan indicates the ratio when the lifespan of metal is taken as 1.
＊ 製造コストは、金属の製造コストを１とした場合の
割合を示し、（）内は、プレス成形の場合の割合を示す
。*The manufacturing cost indicates the ratio when the metal manufacturing cost is set to 1, and the numbers in parentheses indicate the ratio in the case of press molding.
従って、紡糸ノズルをセラミックス製とすることにより
、金属に比して耐摩耗性、耐腐食性に優れているため、
寿命を延ばし得、特に、窒化けい素質のもの及び炭化け
い素質のものは、優れた特性を示すことがわかった。Therefore, by making the spinning nozzle made of ceramics, it has superior wear resistance and corrosion resistance compared to metal.
It has been found that those made of silicon nitride and silicon carbide exhibit excellent properties, particularly those made of silicon nitride and silicon carbide.
又、射出成形で形成することにより、複雑形状のものの
形成が可能となり、プレス成形の場合のように、穿孔加
工や外周研削等の後加工を施す必要がなくなり、製造コ
ストを金属製のものに近づけ得ることがわかった。In addition, by injection molding, it is possible to form complex shapes, and unlike press molding, there is no need for post-processing such as drilling or grinding the outer periphery, reducing manufacturing costs to metal products. I found out that I can get close.
以上のように本発明によれば、複雑な形状のものの形成
が可能となるので、従来のように穿孔加工や外周研削等
の後加工が不要となり、ひいては製造コストの低減を図
ることができる。As described above, according to the present invention, it is possible to form a product with a complicated shape, so that post-processing such as drilling and peripheral grinding, which is conventional, is no longer necessary, and manufacturing costs can be reduced.
第１図〜第３図は本発明の一実施例を示し、第１図及び
第２図はセラミックス製紡糸ノズルの射出成形に供した
金型のスプルーやキャビティ等の形状を示す平面図及び
側面図、第３図は本発明に係るセラミックス製紡糸ノズ
ルを拡大して示す半裁縦断正面図、第４図及び第５図は
従来のセラミックス製紡糸ノズルを用いた紡糸口金の半
裁縦断正面図及び底面図で、第６図は第４図における■
部分の拡大図である。
１・・・スプルー ２・・・ランナー３・・
・ゲート
４・・・キャビティ
５・・・中 子
第１図
第２図Figures 1 to 3 show an embodiment of the present invention, and Figures 1 and 2 are a plan view and a side view showing the shapes of the sprue, cavity, etc. of a mold used for injection molding of a ceramic spinning nozzle. 3 is an enlarged half-cut longitudinal sectional front view showing a ceramic spinning nozzle according to the present invention, and FIGS. 4 and 5 are half-cut longitudinal sectional front views and bottom views of a spinneret using a conventional ceramic spinning nozzle. Figure 6 shows ■ in Figure 4.
It is an enlarged view of a part. 1... Sprue 2... Runner 3...
・Gate 4... Cavity 5... Core Figure 1 Figure 2
Claims (1)
の孔にそれぞれ嵌着されるセラミックス製紡糸ノズルを
、射出成形により形成することを特徴とするセラミック
ス製紡糸ノズルの製造方法。(1) A method for manufacturing a ceramic spinning nozzle, which comprises forming ceramic spinning nozzles by injection molding, each of which is fitted into a plurality of holes provided at the bottom of a cup-shaped metal spinning pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33337489A JPH03193905A (en) | 1989-12-22 | 1989-12-22 | Production of ceramic spinning nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33337489A JPH03193905A (en) | 1989-12-22 | 1989-12-22 | Production of ceramic spinning nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03193905A true JPH03193905A (en) | 1991-08-23 |
Family
ID=18265396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33337489A Pending JPH03193905A (en) | 1989-12-22 | 1989-12-22 | Production of ceramic spinning nozzle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03193905A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7752723B2 (en) | 2003-05-27 | 2010-07-13 | Oerlikon Heberlein Temco Wattwil Ag | Nozzle core for a device used for producing loop yarn as well as method for the production of a nozzle core |
-
1989
- 1989-12-22 JP JP33337489A patent/JPH03193905A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7752723B2 (en) | 2003-05-27 | 2010-07-13 | Oerlikon Heberlein Temco Wattwil Ag | Nozzle core for a device used for producing loop yarn as well as method for the production of a nozzle core |
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