JPH01193496A - Metal-ceramics composite slide member including lubricating oil - Google Patents

Metal-ceramics composite slide member including lubricating oil

Info

Publication number
JPH01193496A
JPH01193496A JP1554988A JP1554988A JPH01193496A JP H01193496 A JPH01193496 A JP H01193496A JP 1554988 A JP1554988 A JP 1554988A JP 1554988 A JP1554988 A JP 1554988A JP H01193496 A JPH01193496 A JP H01193496A
Authority
JP
Japan
Prior art keywords
metal
skeleton
molded body
lubricating oil
casting
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
Application number
JP1554988A
Other languages
Japanese (ja)
Inventor
Hiroaki Katayama
片山 博彰
Yoshihiro Nakagawa
中川 義弘
Takashi Hashimoto
隆 橋本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP1554988A priority Critical patent/JPH01193496A/en
Publication of JPH01193496A publication Critical patent/JPH01193496A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16NLUBRICATING
    • F16N15/00Lubrication with substances other than oil or grease; Lubrication characterised by the use of particular lubricants in particular apparatus or conditions

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

PURPOSE:To enable casting materials to be applied as a base material over a wide range by a molten bath of a metal casting material penetrating and solidifying in a cavity formed by a net skeleton of a ceramics molding. CONSTITUTION:A molten bath of a metal casting material 3 penetrates and solidifies in a cavity formed by a net skeleton 2 of a ceramics molding 1 consisting of said skeleton 2 so that lubricant oil penetrates in cracks produced in the net skeleton 2. Thus, components and other pulverulent grains are not restricted for the formation of perforated material so that casting materials can be applied as a base material over a wide range. Also, the antiwear property, heat resisting property and strength are improved.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、軸受、ライナー等に適用可能な潤滑油を含有
した金属−セラミックス複合摺動部材に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a metal-ceramic composite sliding member containing lubricating oil that can be applied to bearings, liners, etc.

(従来の技術) 従来より、潤滑油含有の摺動部材としては焼結含油軸受
がよく知られている。
(Prior Art) Sintered oil-impregnated bearings have been well known as sliding members containing lubricating oil.

しかして上記部材は、たとえばFe、 Cu、  Cの
粉末を混合し加圧成形して後焼結し、得た多孔質成形体
に潤滑油を含浸させたものであり、上記Fe −Cu−
C系以外に、Fe−C系、Cu −Sn系、Cu −S
n −C系などもよく使用されている。
The above-mentioned member is, for example, a porous molded body obtained by mixing powders of Fe, Cu, and C, pressure molding, and subsequent sintering, and impregnating the obtained porous molded body with lubricating oil.
In addition to C type, Fe-C type, Cu-Sn type, Cu-S type
n -C series etc. are also often used.

(発明が解決しようとする課題) 上記の従来部材は多孔質であると共に同気孔が連続して
いるため、強度面で問題を有していた。
(Problems to be Solved by the Invention) The above-mentioned conventional member is porous and has continuous pores, so it has a problem in terms of strength.

また混合金属粉末のうち一部成分の融点が低く、焼結時
に液相を生じる場合、多孔質となるためには同液相が未
融解の成分と反応して固相を生じ、前記液相の流出跡が
空孔として残るような成分の組合せが必要であり、成分
金属の組合せに制約がある。
In addition, if some components of the mixed metal powder have a low melting point and produce a liquid phase during sintering, in order to become porous, the liquid phase reacts with unmelted components to form a solid phase, and the liquid phase It is necessary to have a combination of components that leaves traces of the outflow as pores, and there are restrictions on the combination of component metals.

本発明は以上のような問題点に鑑みてなされたもので、
基材材質には広範囲のものが適用できると共に、優れた
強度、耐摩耗性を有するところの潤滑油含有摺動部材の
提供を目的とする。
The present invention was made in view of the above problems.
The object of the present invention is to provide a lubricating oil-containing sliding member that can be applied to a wide range of base materials and has excellent strength and wear resistance.

(課題を解決するための手段) 以上の目的達成のために本発明の摺動部材は、網目状骨
格を有するセラミックス成形体の該骨格が形成する空隙
に金属鋳造材が浸透しており、かつ前記骨格に生ぜしめ
た多数のクランクに潤滑油が含まれてなることを発明の
構成としているのである。
(Means for Solving the Problems) In order to achieve the above object, the sliding member of the present invention has a ceramic molded body having a mesh skeleton, in which a metal casting material penetrates into the void formed by the skeleton, and The structure of the invention is that a large number of cranks formed in the skeleton contain lubricating oil.

(実施例) 以下本発明を第1図に示す実施例に基づいて説明する。(Example) The present invention will be explained below based on the embodiment shown in FIG.

同図は本発明一実施例の円筒形金属−セラミックス複合
摺動部材の部分断面図であり、1が円筒形セラミックス
成形体で、同成形体1は網目状骨格2から成り立ってい
る。そして同網目状骨格2の形成する空隙には金属鋳造
材3が浸透しており、金属−セラミックス複合体4を形
成している。
This figure is a partial sectional view of a cylindrical metal-ceramic composite sliding member according to an embodiment of the present invention, in which numeral 1 is a cylindrical ceramic molded body, and the molded body 1 is made up of a mesh skeleton 2. The metal casting material 3 is infiltrated into the voids formed by the mesh skeleton 2, forming a metal-ceramic composite 4.

5は前記骨格2に生じたクラックで、図示していないが
同クラック5には潤滑油が浸透しており、同部材の使用
に際してはこの浸透潤滑油が滲み出て自己潤滑作用をす
るのである。
Reference numeral 5 indicates a crack that has occurred in the skeleton 2. Although not shown, lubricating oil has penetrated into the crack 5, and when the member is used, this penetrating lubricating oil oozes out and has a self-lubricating effect. .

前記セラミックス成形体1の材質は、耐摩耗性、耐熱性
等の必要に応じて、AfzOx+ Zr0z+ Bed
、 TiC,SiC+ TiN+ SiJm  等の酸
化物、ケイ化物、窒化物、ホウ化物、金属炭化物を選定
する。
The material of the ceramic molded body 1 may be selected from AfzOx+ Zr0z+ Bed depending on requirements such as wear resistance and heat resistance.
, TiC, SiC+ TiN+ SiJm, and other oxides, silicides, nitrides, borides, and metal carbides are selected.

このセラミックス成形体1は一般にセラミックスフオー
ムと呼ばれているもので、その一般的な製造法は、次の
通りである。すなわち、ポリウレタンを発泡させて網目
状骨格としたポリウレタンフォームに、上記セラミック
ス材のスラリーを含浸させ、次いで余剰のスラリーを除
去し、網目状骨格にセラミックス材が均一に堆積させた
ものを得る。これを乾燥後焼成することにより、セラミ
ックス成形体が容易に得られるのであり、この成形体の
空隙は完全に外部と連絡して、金属溶湯の浸透に好都合
である。
This ceramic molded body 1 is generally called a ceramic foam, and its general manufacturing method is as follows. That is, a polyurethane foam formed by foaming polyurethane to form a mesh skeleton is impregnated with the slurry of the ceramic material, and then excess slurry is removed to obtain a polyurethane foam in which the ceramic material is uniformly deposited on the mesh skeleton. By drying and firing this, a ceramic molded body can be easily obtained, and the voids in this molded body are completely communicated with the outside, which is convenient for penetration of the molten metal.

なお、前記円筒形のセラミックス成形体1は円筒形ポリ
ウレタンフォームを使用することによって容易に得られ
る。
The cylindrical ceramic molded body 1 can be easily obtained by using cylindrical polyurethane foam.

ところで本発明におけるセラミックス成形体の空隙率は
80〜95%が好ましく、80%未満では金属鋳造材溶
湯が同成形体の骨格空隙に充分浸透しないおそれがある
ためで、一方95%を超えるとセラミックス成形体の形
成が困難であると共に潤滑油貯蔵部分が不足する。
By the way, the porosity of the ceramic molded body in the present invention is preferably 80 to 95%, because if it is less than 80%, the molten metal casting material may not sufficiently penetrate into the skeletal voids of the molded body, whereas if it exceeds 95%, the ceramic It is difficult to form a molded body and there is a shortage of lubricant storage area.

なお、上記空隙率はポリウレタンフォームの空隙率によ
って決まり、ポリウレタンフォームは種々の空隙率のも
のが容易に得られる。
The above porosity is determined by the porosity of the polyurethane foam, and polyurethane foams with various porosity can be easily obtained.

かくて得られたセラミックス成形体の骨格空隙へ浸透さ
せる金属鋳造材には要求される性質、強度等により高級
鋳鉄、ダクタイル鋳鉄、鋳鋼、その他の鉄系合金鋳造材
、それに銅やアルミニウム等の非鉄合金鋳造材等も適宜
使用できる。
The metal casting material to be infiltrated into the skeletal voids of the ceramic molded body obtained in this way may include high-grade cast iron, ductile cast iron, cast steel, other ferrous alloy casting materials, and non-ferrous materials such as copper and aluminum, depending on the required properties and strength. Alloy casting materials etc. can also be used as appropriate.

前記円筒形セラミックス成形体1の骨格2空隙への金属
鋳造材3溶湯の浸透には遠心力鋳造が好適である。たと
えば第2図に示すように、竪型遠心力鋳造材の金型7内
に前記セラミックス成形体1を耐火物8を介してセット
し、その上端をバンド9で固定した後、この状態で金型
7を回転させ前記鋳造材3の溶湯を注湯用樋10を用い
てセラミックス成形体1内へ注°渇するのである。同図
中11は回転台、12は金型7の砂型底面である。上記
注湯に際して注湯量を多くすれば第3図に示すように、
金属−セラミックス複合体4の内面に金属鋳造材の内層
6を形成することができる。
Centrifugal force casting is suitable for infiltrating the molten metal casting material 3 into the voids of the skeleton 2 of the cylindrical ceramic molded body 1. For example, as shown in FIG. 2, the ceramic molded body 1 is set in a vertical centrifugal casting mold 7 through a refractory 8, its upper end is fixed with a band 9, and then the molded body is The mold 7 is rotated and the molten metal of the casting material 3 is poured into the ceramic molded body 1 using the pouring gutter 10. In the figure, 11 is a rotary table, and 12 is a sand mold bottom surface of the mold 7. If the amount of poured molten metal is increased when pouring the molten metal, as shown in Figure 3,
An inner layer 6 of metal casting material can be formed on the inner surface of the metal-ceramic composite 4 .

なお、遠心力鋳造手段は例示の竪型のみならず水平型、
傾斜型等の遠心力鋳造によることも可能である。
Note that the centrifugal force casting means is not only the vertical type as illustrated, but also the horizontal type,
It is also possible to use centrifugal force casting such as an inclined type.

溶湯のセラミックス成形体1への浸透を助ける手段とし
て成形体1の予熱は有効であり、予熱時の酸化等により
変質のおそれのあるときは不活性ガス中で予熱を行えば
よい。
Preheating the molded body 1 is effective as a means to help the molten metal penetrate into the ceramic molded body 1, and if there is a risk of deterioration due to oxidation or the like during preheating, preheating may be performed in an inert gas.

前記遠心力鋳造の際の鋳型回転数については、G No
、が大きく、鋳込温度が高い方が浸透を助長する。一般
にG No、 は020〜G200程度であるが、勿論
0200以上でも浸透を大きくするのでよい。
Regarding the mold rotation speed during centrifugal force casting, G No.
, and the casting temperature is higher, the penetration is facilitated. Generally, G No. is about 020 to G200, but it is of course possible to set it to 0200 or more because it increases penetration.

特に、セラミックス成形体1の空隙率が小さく、浸透層
を厚くする必要のある場合はG No、を大き(すれば
よい。
In particular, when the porosity of the ceramic molded body 1 is small and it is necessary to thicken the permeation layer, G No. may be increased.

なお鋳造は遠心力鋳造に限られるべきものでなく、他の
鋳造法たとえば溶湯を鋳型中に圧入するなどの方法も可
能であり、鋳造品の形状も同筒形以外の種々の形状とす
ることもできる。
Casting should not be limited to centrifugal casting; other casting methods such as press-fitting molten metal into a mold are also possible, and the shape of the cast product may also be various shapes other than the same cylindrical shape. You can also do it.

かくて鋳造により得られた金属−セラミックス複合体の
セラミックス骨格2にクラックを生ぜしめるには、該複
合体を急熱や急冷する熱処理に依ることができる。たと
えば、前記鋳造後高温で型ハラシを行なって後、急冷す
ることによって目的を達することができ、生じたクラッ
タへの潤滑油の浸透は、前記熱処理後の複合体を加圧下
で潤滑油に浸漬することによって容易に達成できる。
In order to generate cracks in the ceramic skeleton 2 of the metal-ceramic composite obtained by casting, the composite can be subjected to heat treatment in which the composite is rapidly heated or rapidly cooled. For example, the purpose can be achieved by performing mold milling at a high temperature after casting, followed by rapid cooling, and the penetration of lubricating oil into the resulting clutter can be achieved by immersing the heat-treated composite in lubricating oil under pressure. This can be easily achieved by

次に本発明の具体的実施例を掲げて説明する。Next, specific examples of the present invention will be described.

成分がAf、03.  空隙率が85%の円筒形セラミ
ックス成形体(外径230m、内径100m、長さ10
0[11111)を900°Cに予熱し、これを竪型遠
心力鋳造機の金型(外径240m、長さ100 mm 
)の内部に耐火物を介しセットして固定し、G140で
回転させこれに1200°Cの鋳鉄溶湯5kgを注湯し
たところ、この鋳鉄溶湯は前記セラミックス成形体の骨
格空隙中に100%浸透して金属−セラミックス複合体
を形成凝固した。
The component is Af, 03. Cylindrical ceramic molded body with a porosity of 85% (outer diameter 230 m, inner diameter 100 m, length 10
0[11111] to 900°C, and put it into a vertical centrifugal casting machine mold (outer diameter 240 m, length 100 mm).
) was set and fixed inside the ceramic molded body through a refractory, rotated at G140, and 5 kg of molten cast iron at 1200°C was poured into it, and this molten cast iron penetrated 100% into the skeletal voids of the ceramic molded body. A metal-ceramic composite was formed and solidified.

次いで該複合体を高温時に金型から取り出し、800°
Cの炉中で2分間保持の後水冷した。これによって前記
骨格部分に無数のクラックが生じた。
The composite was then removed from the mold at high temperature and heated to 800°
After being held in a furnace at C for 2 minutes, it was cooled with water. This caused numerous cracks in the skeleton.

次いで上記複合体を10気圧下で潤滑油プールに浸漬し
たところ潤滑油はセラミックス骨格の前記クラックに浸
透した。
Next, the composite was immersed in a lubricating oil pool under 10 atmospheres, and the lubricating oil penetrated into the cracks in the ceramic skeleton.

か(て得た潤滑油含有の複合体を機械仕上により軸受部
材とし、使用したところ順調に自己潤滑作用を発揮した
The lubricating oil-containing composite thus obtained was mechanically finished into a bearing member, and when used, it successfully exhibited self-lubricating action.

(発明の効果) 本発明は以上の説明のように、網目状骨格を有するセラ
ミックス成形体の該骨格が形成する空隙に、金属鋳造材
溶湯を浸透凝固させたものであるから、従来の焼結多孔
体の含油摺動部材におけるような多孔質形成上の成分そ
の他粉末粒子等に対する制約もなく、基材として広い範
囲の鋳造材が適用でき、従って必要特性の付与範囲も拡
大できるのであり、加えてセラミックスの特性である耐
摩耗性、耐熱性等の付加向上効果もある。また、従来の
焼結多孔体の含油摺動部材は、多数の気孔の存在と共に
同気孔のほとんどが連続して強度的にも問題があったの
に対して、本発明では前記連続気孔に対応する部分はセ
ラミックスで充填されている。すなわち、網目状骨格を
形成しており、油溜りはその骨格に生じた多数のクラッ
クであり同クラックは必ずしも連続一体化したものでな
く強度的に有利である。それに前記のように基材材質に
よる強度向上も可能であって大型の自己潤滑摺動部材等
にも適し、本発明の工業的価値は著大である。
(Effects of the Invention) As described above, the present invention is a ceramic molded body having a mesh-like skeleton, in which a molten metal casting material is infiltrated and solidified into the voids formed by the skeleton. Unlike oil-impregnated sliding members of porous bodies, there are no restrictions on the ingredients for forming pores or on powder particles, and a wide range of cast materials can be used as the base material. It also has the effect of improving the characteristics of ceramics, such as wear resistance and heat resistance. In addition, conventional oil-impregnated sliding members made of sintered porous materials had many pores and most of the pores were continuous, which caused problems in terms of strength, whereas the present invention deals with the continuous pores. The parts are filled with ceramics. In other words, it forms a mesh-like skeleton, and the oil pools are many cracks that occur in the skeleton, and the cracks are not necessarily continuous and integrated, which is advantageous in terms of strength. In addition, as mentioned above, it is possible to improve the strength by changing the base material, and it is suitable for large-sized self-lubricating sliding members, etc., and the industrial value of the present invention is enormous.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明一実施例の円筒形金属−セラミックス複
合摺動部材の部分断面図、第2図は円筒形金属−セラミ
ックス複合体の製造過程における竪型遠心力鋳造機の概
要部断面図、第3図は金属鋳造材の内層を有する円筒形
金属−セラミックス複合体の断面図。 1−セラミックス成形体、2−・網目状骨格、3−・−
金属鋳造材、4−金属−セラミックス複合体、5・−・
クラック、6−内層、7−金型。 特許出願人 久保田鉄工株式会社
FIG. 1 is a partial sectional view of a cylindrical metal-ceramic composite sliding member according to an embodiment of the present invention, and FIG. 2 is a schematic partial sectional view of a vertical centrifugal casting machine in the process of manufacturing a cylindrical metal-ceramic composite. , FIG. 3 is a cross-sectional view of a cylindrical metal-ceramic composite having an inner layer of metal casting. 1- Ceramic molded body, 2-・Mesh skeleton, 3-・-
Metal casting material, 4-metal-ceramic composite, 5...
Cracks, 6-inner layer, 7-mold. Patent applicant Kubota Iron Works Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] (1)網目状骨格を有するセラミックス成形体の該骨格
が形成する空隙に、金属鋳造材が浸透していると共に、
前記骨格に生ぜしめた多数のクラック中に潤滑油が含ま
れてなることを特徴とする潤滑油を含有した金属−セラ
ミックス複合摺動部材。
(1) The metal casting material penetrates into the voids formed by the skeleton of the ceramic molded body having a mesh skeleton, and
A metal-ceramic composite sliding member containing lubricating oil, characterized in that lubricating oil is contained in a large number of cracks formed in the skeleton.
JP1554988A 1988-01-25 1988-01-25 Metal-ceramics composite slide member including lubricating oil Pending JPH01193496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1554988A JPH01193496A (en) 1988-01-25 1988-01-25 Metal-ceramics composite slide member including lubricating oil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1554988A JPH01193496A (en) 1988-01-25 1988-01-25 Metal-ceramics composite slide member including lubricating oil

Publications (1)

Publication Number Publication Date
JPH01193496A true JPH01193496A (en) 1989-08-03

Family

ID=11891857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1554988A Pending JPH01193496A (en) 1988-01-25 1988-01-25 Metal-ceramics composite slide member including lubricating oil

Country Status (1)

Country Link
JP (1) JPH01193496A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006126351A1 (en) * 2005-05-25 2006-11-30 Kabushiki Kaisha Toyota Jidoshokki Process for production of aluminum composite material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006126351A1 (en) * 2005-05-25 2006-11-30 Kabushiki Kaisha Toyota Jidoshokki Process for production of aluminum composite material
EP1886747A1 (en) * 2005-05-25 2008-02-13 Kabushiki Kaisha Toyota Jidoshokki Process for producing aluminum composite material
EP1886747A4 (en) * 2005-05-25 2009-04-22 Toyota Jidoshokki Kk Process for production of aluminum composite material

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