JPH01141230A - Manufacture of slidable member - Google Patents
Manufacture of slidable memberInfo
- Publication number
- JPH01141230A JPH01141230A JP29758187A JP29758187A JPH01141230A JP H01141230 A JPH01141230 A JP H01141230A JP 29758187 A JP29758187 A JP 29758187A JP 29758187 A JP29758187 A JP 29758187A JP H01141230 A JPH01141230 A JP H01141230A
- Authority
- JP
- Japan
- Prior art keywords
- solid lubricating
- layer
- sliding member
- polishing
- present
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000007787 solid Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 20
- 230000001050 lubricating effect Effects 0.000 claims abstract description 18
- 239000000314 lubricant Substances 0.000 claims abstract description 17
- 238000005498 polishing Methods 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 24
- 239000011247 coating layer Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 abstract description 6
- 238000000576 coating method Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract 3
- 229910000640 Fe alloy Inorganic materials 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 12
- 150000004767 nitrides Chemical class 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 4
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 238000007405 data analysis Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- CPSYWNLKRDURMG-UHFFFAOYSA-L hydron;manganese(2+);phosphate Chemical compound [Mn+2].OP([O-])([O-])=O CPSYWNLKRDURMG-UHFFFAOYSA-L 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 206010041235 Snoring Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Sliding-Contact Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、例えばエアコン用ロータリー圧縮機のクラン
クシャフトに代表される、高性能摺動部材の製造方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method of manufacturing a high-performance sliding member, typified by, for example, a crankshaft of a rotary compressor for an air conditioner.
最近、エアコン用圧縮機は、過酷な運転条件に曝される
ことが多くなり、二硫化モリブデン等、固体潤滑剤の利
用が一般化してきている。Recently, compressors for air conditioners are often exposed to harsh operating conditions, and the use of solid lubricants such as molybdenum disulfide has become commonplace.
なお、この種技術として関連するものには、例えば特開
昭６２−２３５９３号公報を挙げることができる。Note that related technology of this type includes, for example, Japanese Patent Application Laid-Open No. 62-23593.
また、従来、固体潤滑剤の潤滑特性については、例えば
金属表面技術ＶＯＬＩＩ （１９６０）Ｐ６４〜７０に
おいて論じられている。Furthermore, the lubricating properties of solid lubricants have been conventionally discussed in, for example, Metal Surface Technology VOL II (1960) P64-70.
しかしながら、従来にあっては、全屈母材表面にほどこ
す下地の作成ならびに固体潤滑剤のコーティングに起因
する寸法変化が避けられず、また、従来、下地である燐
酸マンガン皮膜は機械的強度が小さいため、なじみ過程
における摩耗が大きいという問題が指摘されており、こ
の点の改善が望まれていた。However, in the past, dimensional changes due to the preparation of the base material and coating with solid lubricant applied to the surface of the total bending base material were unavoidable, and the manganese phosphate film used as the base material had poor mechanical strength. It has been pointed out that because of the small size, there is a problem of large wear during the break-in process, and improvement in this point has been desired.
本発明は、前記した従来技術の問題点を解決すべく検討
の結果なされたものであって、その目的とするところは
、固体潤滑剤のコーティングに起因する寸法変化が少な
く、しかも金属母材表面にほどこす下地の機械的強度を
大きくして、なじみ過程における摩耗を小さくシ、耐摩
耗性にすぐれた摺動部材を得ようとするものである。The present invention was made as a result of studies to solve the problems of the prior art described above, and its purpose is to reduce dimensional changes caused by solid lubricant coating, and to reduce the dimensional change caused by solid lubricant coating. The purpose of this invention is to increase the mechanical strength of the base material applied to the surface, reduce wear during the breaking-in process, and obtain a sliding member with excellent wear resistance.
前記目的は、まず、ガス軟窒化等により、金属母材の表
面に、硬い微細な凹凸形状を有する窒化層（下地）を形
成し、次いで、前記窒化層の表面凹部に固体潤滑剤を付
着して、固体潤滑性被膜層を形成する工程と、摺動部材
の寸法精度を維持するために、前記窒化層の表面凸部を
研磨する工程とにより達成される。The purpose is to first form a nitrided layer (base) having a hard, finely uneven shape on the surface of the metal base material by gas nitrocarburizing or the like, and then apply a solid lubricant to the concavities on the surface of the nitrided layer. This is accomplished by forming a solid lubricating coating layer and polishing the surface convexities of the nitrided layer in order to maintain the dimensional accuracy of the sliding member.
なお、固体潤滑性被膜層を強固にするために、固体潤滑
剤とともにバインダーを使用することはもちろん可能で
ある。Incidentally, in order to strengthen the solid lubricant coating layer, it is of course possible to use a binder together with the solid lubricant.
また、窒化層の表面凸部を研磨するには、砥石のみでな
く、例えばパフや回転ブラシを使用することもできる。Furthermore, in order to polish the surface convex portions of the nitride layer, not only a grindstone but also a puff or a rotating brush, for example, can be used.
しかして、本発明方法によって製造された摺動部材の摺
動面は、基本的には、固体潤滑性被膜層からなる表面に
対し、強固な窒化層が露出している構造となるが、前記
窒化層の表面凸部は研磨され、固体潤滑性被膜層による
寸法増加がないため、慴動部材の寸法精度はよい。Therefore, the sliding surface of the sliding member manufactured by the method of the present invention basically has a structure in which a strong nitrided layer is exposed on the surface consisting of a solid lubricating film layer. The surface convexities of the nitrided layer are polished, and there is no increase in size due to the solid lubricating coating layer, so the dimensional accuracy of the sliding member is good.
また、本発明方法によって製造された摺動部材が相手材
と摺動した場合、当該摺動面にかかる面圧は、研磨され
た強固な窒化層が支え、かつ、固体潤滑性被膜層は、前
記露出窒化層に保持されて剥離し難いため、潤滑特性を
失うことがなく、大きな荷重に耐えることができ、なじ
み過程における摩耗を小さくすることができる。Furthermore, when the sliding member manufactured by the method of the present invention slides on a mating material, the surface pressure applied to the sliding surface is supported by the strong polished nitride layer, and the solid lubricating coating layer is Since it is held by the exposed nitrided layer and is difficult to peel off, it can withstand large loads without losing its lubricating properties, and can reduce wear during the break-in process.
なお、寸法精度、なじみ過程における摩耗が問題になら
ない場合には１表面研磨層の面部にさらに固体潤滑性被
膜層を厚く形成することもできるさらに、実験によれば
、下地である窒化層表面凸部の研磨面積を、部材全表面
積比で３％以下とした場合、クランクシャフトに代表さ
れる高性能摺動部材の外径寸法精度を維持するのが若干
難しくなり、他方、前記窒化層表面凸部の研磨面積を、
部材全表面積比で５０％以上とした場合は、初期のなじ
み性に若干欠けることが確認された。In addition, if dimensional accuracy and wear during the break-in process are not a problem, a solid lubricant coating layer may be formed thicker on the surface of the first surface polishing layer.Furthermore, according to experiments, the surface convexity of the underlying nitride layer If the polishing area of the part is less than 3% of the total surface area of the part, it becomes somewhat difficult to maintain the outer diameter dimensional accuracy of high-performance sliding parts such as crankshafts. The polishing area of
It was confirmed that when the total surface area ratio of the member was 50% or more, the initial conformability was slightly lacking.
以下、本発明を、図面の一実施例にもとづいて説明する
と、第１図は本発明方法によって製造された摺動部材の
拡大縦断面図、第２図は同じく本発明方法によって製造
された摺動部材表面の顕微鏡写真であり、なお、ここで
、第２図をさらに詳細に説明すると、同図は、ガス軟窒
化処理をほどこしたロータリー圧縮機用クランクシャフ
ト表面にフェノール樹脂を薄く塗布し、次いで、二硫化
モリブデン粉末を布パフでこすり付け、さらに、ワイヤ
ブラシで研磨して形成した固体潤滑性被膜店表面の顕微
鏡写真であり、第１図および第２図において、符号１は
鉄合金からなる金属母材、２は窒化層、３は固体潤滑性
被膜層を示し、本発明は、金属母材１の面上に、表面に
凹凸形状を有する窒化層２を形成し、前記窒化層２の表
面凹部に固体潤滑剤を付着して、固体潤滑性被膜層３を
形成し、かつ、前記窒化層２の表面凸部を研磨すること
を要旨とするものである。Hereinafter, the present invention will be explained based on one embodiment of the drawings. Fig. 1 is an enlarged vertical sectional view of a sliding member manufactured by the method of the present invention, and Fig. 2 is an enlarged longitudinal sectional view of a sliding member also manufactured by the method of the present invention. This is a microscopic photograph of the surface of a moving member. To explain Fig. 2 in more detail, this figure shows the surface of a crankshaft for a rotary compressor that has been subjected to gas nitrocarburizing treatment, with a thin coating of phenolic resin. Next, it is a microscopic photograph of the surface of a solid lubricating film formed by rubbing molybdenum disulfide powder with a cloth puff and polishing with a wire brush. 2 is a nitrided layer, and 3 is a solid lubricating film layer.The present invention forms a nitrided layer 2 having an uneven surface on the surface of the metal base material 1, and the nitrided layer 2 The gist of this method is to apply a solid lubricant to the concave portions of the surface of the nitrided layer 2 to form a solid lubricant coating layer 3, and to polish the convex portions of the surface of the nitrided layer 2.
しかして、前記のごとくして製造された摺動部材の摺動
面は、第１図に示すように、基本的には、固体潤滑性被
膜層３からなる表面に対し、強固な窒化層２が露出して
いる構造となるが、前記窒化Ｍ２の表面凸部は研磨され
、固体潤滑性被膜層３による寸法増加がないため、摺動
部材の寸法精度はよい。As shown in FIG. 1, the sliding surface of the sliding member manufactured as described above basically consists of a solid lubricating coating layer 3 and a strong nitrided layer 2. However, since the surface convex portions of the nitrided M2 are polished and there is no increase in size due to the solid lubricant coating layer 3, the dimensional accuracy of the sliding member is good.
また、本発明方法によって製造された摺動部材が相手材
と摺動した場合、当該摺動面にかかる面圧は、研磨され
た強固な窒化層２が支え、かつ固体潤滑性被膜層２は、
前記露出窒化層２に保持されて剥離し難いため、潤滑特
性を失うことがなく、大きな荷重に耐えることができ、
なじみ過程における摩耗を小さくすることができる。Furthermore, when the sliding member manufactured by the method of the present invention slides on a mating material, the surface pressure applied to the sliding surface is supported by the polished strong nitride layer 2, and the solid lubricating coating layer 2 ,
Since it is held by the exposed nitride layer 2 and is difficult to peel off, it can withstand large loads without losing its lubricating properties.
Wear during the break-in process can be reduced.
なお、実験においては、金属母材として、金型鋳造によ
る微細黒鉛鋳鉄を使用したため、第１図に示すように、
黒鉛４は、金属母材１にも窒化層２にも同様に分布して
いる。In addition, in the experiment, fine graphite cast iron made by die casting was used as the metal base material, so as shown in Figure 1,
The graphite 4 is distributed in the metal base material 1 and the nitrided layer 2 in the same manner.
ここで１本発明方法によって二硫化モリブデンをコーテ
ィングしたテストピン、さらには、比較材として、リュ
ーブライ処理後、スプレー法により二硫化モリブデンを
コーティングした合金鋳鉄製のテストピンと、焼入れ鋳
鉄材で作成したＶブロックとを組み合せておこなったフ
ァビリー摩耗試験の結果を下記するものとし、なお、第
１表には、テストピンの被膜形成前後および摩耗試験前
後における外径寸法変化とＶブロックの摩耗量とを示し
た。また、■ブロックの摩耗量は、摩耗断面積で示した
。Here, 1 test pins were coated with molybdenum disulfide by the method of the present invention, and furthermore, as comparison materials, test pins made of alloyed cast iron were coated with molybdenum disulfide by a spray method after Lublei treatment, and Vs made of quenched cast iron material. The results of the Fabilly wear test conducted in combination with the block are shown below.Table 1 shows the change in the outer diameter dimension of the test pin before and after film formation and before and after the wear test, and the wear amount of the V block. Ta. In addition, the amount of wear of the (2) block was expressed as the wear cross-sectional area.
第１表 テストピンの分村性変化（１）とＶブロック
の摩Ｄｉ（■２）試ガ 機械加工後 処理！
変化量 試■ 摩耗量 Ｖブロック摩１大発明
品１ ６．４９３ ６．４９９ ．００６ ６．４９
６ ．００３ ０．００２５２ ６．４９３ ６．
４９６ ．００３ ６．４９２ ．００４ ０．００
２２３ ６．４９４ ６．４９ｇ 、００４ ６．
４９５ ．００３ ０．００１９志較＝ １ ６
．４９４ ６．５１５ ．０２１ ６．４９１ ．０２
４ ０．００４５２ ６．４９３ ６．５２０ ．
０２７ ６．４８８ ．０３２ ０．００４５３
６．４９４ ６．５１２ ．０１８ ６．４９１ ．０
２１ ０，００４６第３図は本発明方法によって製造
された摺動部材のファビリー摩耗試験結果を、従来方法
によって製造された摺動部材のそれと比較して示す特性
線図、第４図は第３図のデータ分析に供されたファビリ
ー摩耗試験法の説明図であり、第４図において、１１は
テストピン、１２はＶブロックを示し、試験中の摩擦速
度はＱ 、 １ ｍ／ ｓ ＋荷重増加速度は約２５ｋ
ｇ／ｓとした。Table 1 Change in separation property of test pin (1) and V-block machining Di (■2) Trial process After machining!
Amount of change Test ■ Amount of wear V-block friction, the greatest invention 1 6.493 6.499 . 006 6.49
6. 003 0.00252 6.493 6.
496. 003 6.492. 004 0.00
223 6.494 6.49g, 004 6.
495. 003 0.0019 comparison = 1 6
．． 494 6.515. 021 6.491. 02
4 0.00452 6.493 6.520 .
027 6.488. 032 0.00453
6.494 6.512. 018 6.491. 0
21 0,0046 Fig. 3 is a characteristic diagram showing the results of the Fabilly wear test of the sliding member manufactured by the method of the present invention in comparison with that of the sliding member manufactured by the conventional method. FIG. 4 is an explanatory diagram of the Fabilly wear test method used for the data analysis in FIG. Speed is about 25k
g/s.
そして、ノアビリーテスト中における荷重と摩擦係数と
の変化を示す第３図において、符号５は本発明品の荷重
、６は比較材の荷重、７は本発明品の摩擦係数、８は比
較材の摩擦係数、９は本発明品の面圧（ｋｇｆ／ｗｍ”
）、１０は比較材の面圧（ｋｇｆ／ＩＩｎ”）であり、
第３図から、本発明品は、摩擦係数が小さく、また、試
験片の摩耗が少ないため。In Fig. 3, which shows changes in load and friction coefficient during the noabilly test, 5 is the load of the present invention product, 6 is the load of the comparative material, 7 is the friction coefficient of the present invention product, and 8 is the comparative material. 9 is the surface pressure of the product of the present invention (kgf/wm”
), 10 is the surface pressure (kgf/IIn”) of the comparative material,
From FIG. 3, it can be seen that the product of the present invention has a small friction coefficient and less wear on the test piece.
荷重の上昇が速いことが判り、データ分析によれば、本
発明方法によって製造された摺動部材は。It was found that the load increased quickly, and according to data analysis, the sliding member manufactured by the method of the present invention.
下地に燐酸マンガン被膜を利用する従来の摺動部材に比
較して、固体潤滑性被膜形成時の寸法変化は１７３以下
、初期摩耗量は１７８以下、相手材の摩耗は約１７２、
また、耐荷重性は３０％太きいといったように、極めて
良好なデータ分析評価を得ることができた。Compared to conventional sliding members that use a manganese phosphate film as the base, the dimensional change when forming the solid lubricating film is less than 173, the initial wear amount is less than 178, and the wear of the mating material is about 172,
In addition, we were able to obtain extremely favorable data analysis evaluations, such as the load capacity being 30% higher.
なお、実験においては、本発明品、比較材共に、■ブロ
ック（第４図の符号１２参照）が破壊する試験荷重約８
００ｋｇまで耐えたので、前記破壊時におけろ荷重とＶ
ブロックの摩耗痕中とから、面圧を算出して第３図に図
示した。In addition, in the experiment, both the invention product and the comparative material were tested at a test load of approximately 8 at which the block (see reference numeral 12 in Figure 4) breaks.
Since it withstood up to 00 kg, the load and V
The surface pressure was calculated from the wear marks on the block and is shown in FIG.
本発明は以上のごときであり、前記実施例の説明からも
明らかなように、本発明によれば、固体潤滑剤のコーテ
ィングに起因する寸法変化が少なく、しかも金属母材表
面にほどこす下地の機械的強度を大きくして、なじみ過
程における摩耗を小さくし、耐摩耗性にすぐれた摺動部
材を得ることができる。The present invention is as described above, and as is clear from the description of the above embodiments, according to the present invention, there is little dimensional change due to solid lubricant coating, and moreover, A sliding member with excellent wear resistance can be obtained by increasing mechanical strength and reducing wear during the breaking-in process.
図面は本発明の一実施例を示し、第１図は本発明方法に
よって製造された摺動部材の拡大縦断面図、第２図は同
じく本発明方法によって製造された摺動部材表面の顕微
鏡写真、第３図は本発明方法によって製造された摺動部
材のファビリー摩耗試験結果を、従来方法によって製造
された摺動部材のそれと比較して示す特性線図、第４図
は第３図のデータ分析に供されたファビリー摩耗試験法
の説明図である。
１・・・金属母材、２・・・窒化層、３・・・固体潤滑
性皮膜層。
代理人 弁理士 小 川 勝 男
第 １ 口
５イ・・−・・・６≦ノイ≧トニＵ琶１シク７り往楼８
３七し１５を箋 ２圀
第３ 図
３ ９ １５ ２７ ２’７ ３３ ３９日？
ｌｆｌ Ｃ３ｅＣ）
第 ４ 口
手続補正書（方Ｎ）
昭和 ６２年特許願第 ２９７５８１、発明の名称 摺
動部材の製造方法
補正をする者
１Ｆ鼾の■ 特許出願人
名 称 ４５１０１株式会袢 日 立 製
作 新式 理 人
居 所 〒ｔｏｏ東京都千代田区丸の内−丁目５
番１号株式会社日立製作所内 電話す「≦’ ２１２−
１１１１伏代ａ）氏 名 （６１１５０＋ 弁
理 士 小 川 勝 男補正命令の日付
Ｍｉ織を示すｗ４１＋１１訛Ｊと補正よる。The drawings show an embodiment of the present invention, and FIG. 1 is an enlarged longitudinal cross-sectional view of a sliding member manufactured by the method of the present invention, and FIG. 2 is a microscopic photograph of the surface of a sliding member also manufactured by the method of the present invention. , FIG. 3 is a characteristic diagram showing the results of the Fabilly wear test of the sliding member manufactured by the method of the present invention compared with that of the sliding member manufactured by the conventional method, and FIG. 4 shows the data of FIG. 3. FIG. 2 is an explanatory diagram of the Fabry wear test method used for analysis. DESCRIPTION OF SYMBOLS 1... Metal base material, 2... Nitride layer, 3... Solid lubricating film layer. Agent Patent Attorney Masaru Ogawa Male No. 1 5 I...6 ≦ Noi ≧ Toni Uwa 1 Shiku 7 Ri Orou 8
37 and 15 on paper 2 Kuni No. 3 Figure 3 9 15 27 2'7 33 39th?
lfl C3eC) No. 4 Written Amendment of Oral Proceedings (Direction N) 1988 Patent Application No. 297581, Title of the Invention Person who amends the manufacturing method of sliding members 1F Snoring■ Patent Applicant Name Name 45101 Stock Company Made by Hitachi
Created by Shinshiki Process of residence Address: Too 5 Marunouchi-chome, Chiyoda-ku, Tokyo
Number 1: Inside Hitachi, Ltd. Telephone: ``≦' 212-
1111 Fushiro a) Name (61150+ Dialect)
Masaru Ogawa, a Physician.
Claims (1)
を形成し、前記窒化層の表面凹部に固体潤滑剤を付着し
て、固体潤滑性被膜層を形成し、かつ、前記窒化層の表
面凸部を研磨することを特徴とする摺動部材の製造方法
。 ２、特許請求の範囲第１項記載の発明において、窒化層
表面凸部の研磨面積を、部材全表面積比で３〜５０％研
磨する摺動部材の製造方法。 ３、特許請求の範囲第１項記載の発明において、窒化層
の表面凸部を研磨した後、さらに、その表面研磨層の面
部に固体潤滑性被膜層を形成する摺動部材の製造方法。[Claims] 1. A nitrided layer having an uneven surface is formed on the surface of a metal base material, and a solid lubricant is attached to the concave portions of the surface of the nitrided layer to form a solid lubricating coating layer. A method for manufacturing a sliding member, further comprising polishing the surface convex portions of the nitrided layer. 2. A method for manufacturing a sliding member according to the invention as set forth in claim 1, in which the polishing area of the convex portions on the surface of the nitrided layer is polished by 3 to 50% in terms of the total surface area of the member. 3. A method for manufacturing a sliding member according to the invention as set forth in claim 1, in which after polishing the surface convex portions of the nitrided layer, a solid lubricating coating layer is further formed on the surface portion of the surface polishing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29758187A JPH01141230A (en) | 1987-11-27 | 1987-11-27 | Manufacture of slidable member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29758187A JPH01141230A (en) | 1987-11-27 | 1987-11-27 | Manufacture of slidable member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01141230A true JPH01141230A (en) | 1989-06-02 |
Family
ID=17848405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29758187A Pending JPH01141230A (en) | 1987-11-27 | 1987-11-27 | Manufacture of slidable member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01141230A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100750485B1 (en) * | 1999-11-16 | 2007-08-22 | 주식회사 케이티 | Method of web-server log-in through diskette certificate |
| JP2019098268A (en) * | 2017-12-05 | 2019-06-24 | 株式会社サタケ | Rice grain transport device and method for manufacturing rice grain transport device |
-
1987
- 1987-11-27 JP JP29758187A patent/JPH01141230A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100750485B1 (en) * | 1999-11-16 | 2007-08-22 | 주식회사 케이티 | Method of web-server log-in through diskette certificate |
| JP2019098268A (en) * | 2017-12-05 | 2019-06-24 | 株式会社サタケ | Rice grain transport device and method for manufacturing rice grain transport device |
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