JPH08100228A - Valve spring retainer made of titanium alloy - Google Patents
Valve spring retainer made of titanium alloyInfo
- Publication number
- JPH08100228A JPH08100228A JP23910594A JP23910594A JPH08100228A JP H08100228 A JPH08100228 A JP H08100228A JP 23910594 A JP23910594 A JP 23910594A JP 23910594 A JP23910594 A JP 23910594A JP H08100228 A JPH08100228 A JP H08100228A
- Authority
- JP
- Japan
- Prior art keywords
- film
- valve spring
- spring retainer
- crn
- alloy
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
- C23C28/044—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material coatings specially adapted for cutting tools or wear applications
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、表面に処理膜が設けら
れたＴｉ合金製バルブスプリングリテーナに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve spring retainer made of Ti alloy having a treated film on its surface.
【０００２】[0002]
【従来の技術】IVＡ族金属元素であるＴｉは、高融点と
高い比強度を有し、またあらゆる環境に対して耐蝕性を
発揮する性質を持っている。従って、今日、Ｔｉ合金
は、高温での使用を余儀なくされ、また高強度を併せて
必要とされる航空宇宙産業の分野、あるいは内燃機関の
コンロッド、排気ガスバルブ、バルブスプリングリテー
ナ等の構造用材料として用いられている。2. Description of the Related Art Ti, which is a group IVA metal element, has a high melting point and a high specific strength, and has the property of exhibiting corrosion resistance in all environments. Therefore, today, Ti alloys are forced to be used at high temperatures and are also required to have high strength, in the field of aerospace industry, or as structural materials for connecting rods of internal combustion engines, exhaust gas valves, valve spring retainers, etc. It is used.
【０００３】ところで、バルブスプリングリテーナとし
てＴｉ合金が使用される場合、耐焼付性や耐磨耗性を確
保するために、その表面に種々の処理が施されている。
例えば、特開平４−１７１２０６号公報に開示されてい
るように、バルブスプリングリテーナのスプリングとの
摺動面やコッタとの摺接面に硬質イオンプレーティング
皮膜を形成したものが知られている。When a Ti alloy is used as a valve spring retainer, its surface is subjected to various treatments in order to secure seizure resistance and wear resistance.
For example, as disclosed in Japanese Patent Laid-Open No. 4-171206, there is known a valve spring retainer in which a hard ion plating film is formed on a sliding surface with a spring or a sliding contact surface with a cotter.
【０００４】[0004]
【発明が解決しようとする課題】この場合、上記の従来
技術では、硬質イオンプレーティング皮膜としてクロム
と窒素からなる皮膜、またはチタンと窒素からなる皮膜
が使用されている。しかしながら、バルブスプリングリ
テーナを構成するＴｉ合金にクロムと窒素からなる皮膜
が設けられると、耐磨耗性に優れるものの、この皮膜が
前記Ｔｉ合金から剥がれ易いという問題が指摘されてい
る。また、Ｔｉ合金にチタンと窒素からなる皮膜が設け
られると、この皮膜が前記Ｔｉ合金から剥がれ難いもの
の、耐磨耗性に劣るという問題が指摘されている。In this case, in the above-mentioned prior art, a film made of chromium and nitrogen or a film made of titanium and nitrogen is used as the hard ion plating film. However, it has been pointed out that when a Ti alloy constituting the valve spring retainer is provided with a film made of chromium and nitrogen, the film is easily peeled from the Ti alloy, although the film has excellent wear resistance. Further, it has been pointed out that when a Ti alloy is provided with a film made of titanium and nitrogen, the film is less likely to be peeled off from the Ti alloy, but has poor wear resistance.
【０００５】本発明は、この種の問題を解決するもので
あり、耐磨耗性および耐用性に優れたＴｉ合金製バルブ
スプリングリテーナを提供することを目的とする。The present invention solves this type of problem, and an object of the present invention is to provide a valve spring retainer made of Ti alloy which is excellent in wear resistance and durability.
【０００６】[0006]
【課題を解決するための手段】前記の課題を解決するた
めに、本発明は、エンジンに組み込まれ、弁ばねの一端
を支持するためのＴｉ合金製バルブスプリングリテーナ
であって、前記バルブスプリングリテーナは、前記弁ば
ねの一端が係合する面にＴｉＮ膜を下地にしたＣｒＮ膜
を設けることを特徴とする。In order to solve the above-mentioned problems, the present invention is a valve spring retainer made of Ti alloy, which is incorporated in an engine and supports one end of a valve spring. Is characterized in that a CrN film having a TiN film as a base is provided on a surface with which one end of the valve spring is engaged.
【０００７】[0007]
【作用】本発明に係るＴｉ合金製バルブスプリングリテ
ーナでは、バルブスプリングリテーナの面に、まず、下
地としてＴｉＮ膜が設けられた後、このＴｉＮ膜にＣｒ
Ｎ膜が積層して設けられる。このため、ＣｒＮ膜は、Ｔ
ｉＮ膜を介しバルブスプリングリテーナに対して剥がれ
難い状態で強固に設けられるとともに、このバルブスプ
リングリテーナの表面は、前記ＣｒＮ膜によって耐磨耗
性が向上する。In the Ti alloy valve spring retainer according to the present invention, a TiN film is first provided as a base on the surface of the valve spring retainer, and then the TiN film is provided with Cr.
N films are stacked and provided. Therefore, the CrN film has a T
The valve spring retainer is firmly provided through the iN film in a state of being hard to be peeled off from the valve spring retainer, and the surface of the valve spring retainer is improved in abrasion resistance by the CrN film.
【０００８】[0008]
【実施例】本発明に係るＴｉ合金製バルブスプリングリ
テーナについて実施例を挙げ、添付の図面を参照しなが
ら以下詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A Ti alloy valve spring retainer according to the present invention will be described in detail below with reference to the accompanying drawings.
【０００９】図１において、参照数字１０は、本実施例
に係るバルブスプリングリテーナを組み込むシリンダヘ
ッドを示す。このシリンダヘッド１０には、回転される
一対のカムシャフト１２によって揺動する一対のロッカ
ーアームユニット１４が装着されており、このロッカー
アームユニット１４に、それぞれバルブ１６の端部が係
合する。In FIG. 1, reference numeral 10 indicates a cylinder head incorporating a valve spring retainer according to this embodiment. A pair of rocker arm units 14 swingable by a pair of rotated cam shafts 12 are mounted on the cylinder head 10, and the rocker arm units 14 are engaged with the ends of the valves 16, respectively.
【００１０】各バルブ１６は、バルブガイド１８に摺動
自在に挿入されており、それぞれの端部に本実施例に係
るバルブスプリングリテーナ２０が装着されるととも
に、前記バルブスプリングリテーナ２０に弁ばね２２の
一端が当接する。Each valve 16 is slidably inserted into a valve guide 18, and a valve spring retainer 20 according to this embodiment is attached to each end of the valve 16 and a valve spring 22 is attached to the valve spring retainer 20. Abut one end of.
【００１１】バルブスプリングリテーナ２０は、Ｔｉ合
金で形成されており、具体的には、２重量％以上６重量
％以下のＡｌと、２重量％以上６重量％以下のＶと、２
重量％以上８重量％以下のＣｏと、全体の重量に対して
０．０１重量％以上０．３重量％以下のＢが含有される
ＣｒＢ2 、ＣｒＢ、Ｃｒ2 Ｂ、Ｃｒ5 Ｂ2 からなる群の
いずれか一種類以上であるＣｒ−Ｂ系金属化合物とから
なる組成物を有し、その組成物の残部がＴｉおよび不可
避不純物である。The valve spring retainer 20 is made of a Ti alloy. Specifically, 2% by weight or more and 6% by weight or less of Al, 2% by weight or more and 6% by weight or less of V, and 2
It is composed of Co of 8 wt% or more and 8 wt% or less, and CrB 2 , CrB, Cr 2 B, or Cr 5 B 2 containing 0.01 wt% or more and 0.3 wt% or less of B with respect to the total weight. The composition comprises a Cr-B-based metal compound that is one or more of any one of the groups, and the balance of the composition is Ti and inevitable impurities.
【００１２】バルブスプリングリテーナ２０は、図２に
示すように、弁ばね２２が当接する座面２４を含む一面
側にＴｉＮ膜２６を下地にしたＣｒＮ膜２８が設けられ
る。ＴｉＮ膜２６およびＣｒＮ膜２８は、それぞれ１μ
ｍ以上の膜厚を有し、かつこのＴｉＮ膜２６とこのＣｒ
Ｎ膜２８を合わせた膜厚全体が１０μｍ以下に設定され
ている。バルブスプリングリテーナ２０の角部の中、応
力集中が発生し易い凹状角部には、ＴｉＮ膜２６および
ＣｒＮ膜２８が設けられない非処理部３０が形成され
る。As shown in FIG. 2, the valve spring retainer 20 is provided with a CrN film 28 having a TiN film 26 as an underlayer on one surface side including a seat surface 24 with which the valve spring 22 abuts. The TiN film 26 and the CrN film 28 each have a thickness of 1 μm.
The TiN film 26 and the Cr having a film thickness of m or more.
The total film thickness including the N film 28 is set to 10 μm or less. A non-processed portion 30 where the TiN film 26 and the CrN film 28 are not formed is formed in the concave corner portion where stress concentration is likely to occur in the corner portion of the valve spring retainer 20.
【００１３】次に、このように構成されるバルブスプリ
ングリテーナ２０において、ＴｉＮ膜２６およびＣｒＮ
膜２８の厚さを種々変化させた実施例１〜１１と、比較
例１〜１１を製造し、所定条件下におけるそれぞれの処
理膜の剥離状態および磨耗状態等を比較する実験を行っ
た。この実施例１〜１１と比較例１〜１１の実験結果を
表１および図６に示す。Next, in the valve spring retainer 20 thus constructed, the TiN film 26 and the CrN film are formed.
Examples 1 to 11 in which the thickness of the film 28 was variously changed and Comparative Examples 1 to 11 were manufactured, and an experiment was conducted to compare the peeled state and the worn state of each treated film under predetermined conditions. Experimental results of Examples 1 to 11 and Comparative Examples 1 to 11 are shown in Table 1 and FIG.
【００１４】[0014]
【表１】 [Table 1]
【００１５】ここで、実施例３を形成する際には、図３
に示すように、バルブスプリングリテーナ２０の非処理
部３０に防コーティングリング３２が配設された後、充
分洗浄したこのバルブスプリングリテーナ２０をプラズ
マアークイオンプレーティング装置（図示せず）にセッ
トした。なお、防コーティングリング３２に代替してマ
スキングテープを用いることができる。Here, in forming the third embodiment, as shown in FIG.
After the anti-coating ring 32 was disposed on the non-treatment portion 30 of the valve spring retainer 20, the valve spring retainer 20 thoroughly washed was set in a plasma arc ion plating device (not shown). A masking tape can be used instead of the anti-coating ring 32.
【００１６】次いで、Ｔｉボンバードによる清浄処理
が、−８００Ｖで１分間（１０-4Ｔｏｒｒ）の条件下で
行われた。そして、Ｎ2 ガスが導入されて（１０-3Ｔｏ
ｒｒ）、５分間だけＴｉＮのプレーティング処理（バイ
アス電圧が−１２０Ｖ）が施されることにより、バルブ
スプリングリテーナ２０上にＴｉＮ膜２６の下地処理が
遂行された。Then, a Ti bombardment cleaning treatment was performed at -800 V for 1 minute (10 -4 Torr). Then, N 2 gas is introduced (10 −3 To
rr) The TiN film 26 was ground on the valve spring retainer 20 by performing a TiN plating process (bias voltage of −120 V) for 5 minutes.
【００１７】さらに、ＣｒＮのプレーティング処理（バ
イアス電圧が−１２０Ｖ、Ｎ2 ガスが１０-3〜１０-2Ｔ
ｏｒｒ、電流が１００Ａ）が３０分間だけ施されること
により、バルブスプリングリテーナ２０のＴｉＮ膜２６
上にＣｒＮ膜２８が積層して設けられた。Further, CrN plating treatment (bias voltage is -120 V, N 2 gas is 10 -3 to 10 -2 T).
orr and current of 100 A) for 30 minutes, the TiN film 26 of the valve spring retainer 20 is applied.
A CrN film 28 was provided on top of it.
【００１８】なお、他の実施例１、２、４〜１１を形成
する際には、ＴｉＮのプレーティング処理時間やＣｒＮ
のプレーティング処理時間を変更するだけでよい。ま
た、比較例１〜１１は、ＴｉＮのプレーティング処理を
行わないもの（比較例１〜３）、ＣｒＮのプレーティン
グ処理を行わないもの（比較例４〜７）、バルブスプリ
ングリテーナ２０の非処理部３０に防コーティングリン
グ３２を配設しないもの（比較例１１）等の相違がある
ものの、基本的には上記実施例３と同様な条件で表面処
理が施された。When forming the other Examples 1, 2, 4 to 11, the TiN plating treatment time and CrN were used.
All you have to do is change the plating process time. Further, in Comparative Examples 1 to 11, those not subjected to the TiN plating treatment (Comparative Examples 1 to 3), those not subjected to CrN plating treatment (Comparative Examples 4 to 7), and the non-treatment of the valve spring retainer 20. The surface treatment was basically carried out under the same conditions as in Example 3 above, although there were differences such as those in which the anti-coating ring 32 was not provided in the portion 30 (Comparative Example 11).
【００１９】次に、このように形成された実施例１〜１
１と比較例１〜１１をリテーナ用モータリングベンチ耐
久テストに供した。その条件は、ばね荷重が２００ｋ
ｇ、ばね繰り返し振動が２００回／ｓｅｃ、時間が４時
間、さらにオイル温度が１２５°Ｃであった。Next, Examples 1 to 1 thus formed
1 and Comparative Examples 1 to 11 were subjected to a retainer motoring bench durability test. The condition is that the spring load is 200k.
g, repetitive vibration of spring was 200 times / sec, time was 4 hours, and oil temperature was 125 ° C.
【００２０】この結果、表１および図６に示すように、
ＴｉＮ膜２６が設けられないものでは（比較例１〜
３）、ＣｒＮ膜２８が容易に剥離してしまう一方、Ｃｒ
Ｎ膜２８が設けられないものでは（比較例４〜７）、皮
膜表面の磨耗が大きくなってしまった。Ｔｉ合金製のバ
ルブスプリングリテーナ２０にＣｒＮ膜２８が直接設け
られると、このＣｒＮ膜２８が剥がれ易くなる一方、Ｔ
ｉＮ膜２６が皮膜表面となると、この皮膜の耐磨耗性が
劣るからである。As a result, as shown in Table 1 and FIG.
If the TiN film 26 is not provided (Comparative Examples 1 to 1)
3), while the CrN film 28 is easily peeled off, Cr
In the case where the N film 28 was not provided (Comparative Examples 4 to 7), the abrasion of the film surface was large. When the CrN film 28 is directly provided on the valve spring retainer 20 made of Ti alloy, the CrN film 28 is easily peeled off, while T
This is because if the iN film 26 becomes the surface of the film, the abrasion resistance of this film becomes poor.
【００２１】これに対して、実施例１〜１１では、下地
にＴｉＮ膜２６が形成された後、このＴｉＮ膜２６上に
ＣｒＮ膜２８が積層して設けられている。このため、Ｃ
ｒＮ膜２８は、下地であるＴｉＮ膜２６を介しバルブス
プリングリテーナ２０に対して剥がれ難い状態で強固に
設けられるとともに、皮膜表面であるＣｒＮ膜２８によ
ってこのバルブスプリングリテーナ２０の耐磨耗性が向
上するという効果が得られた。On the other hand, in Examples 1 to 11, after the TiN film 26 is formed on the base, the CrN film 28 is laminated on the TiN film 26. Therefore, C
The rN film 28 is firmly provided to the valve spring retainer 20 via the underlying TiN film 26 so as not to be easily peeled off, and the CrN film 28, which is the film surface, improves the wear resistance of the valve spring retainer 20. The effect of doing is obtained.
【００２２】さらに、比較例８では、ＴｉＮ膜２６およ
びＣｒＮ膜２８の厚さがそれぞれ１μｍ未満であり、こ
のＴｉＮ膜２６およびＣｒＮ膜２８の特性を発揮させる
ことができなかった。また、比較例９、１０では、Ｔｉ
Ｎ膜２６およびＣｒＮ膜２８の全体の厚さが１１μｍで
あり、膜厚が厚すぎるために皮膜表面にクラックや剥離
が発生してしまった。Further, in Comparative Example 8, the thickness of each of the TiN film 26 and the CrN film 28 was less than 1 μm, and the characteristics of the TiN film 26 and the CrN film 28 could not be exhibited. Further, in Comparative Examples 9 and 10, Ti
The total thickness of the N film 26 and the CrN film 28 was 11 μm, and the film thickness was too thick, so cracks and peeling occurred on the film surface.
【００２３】従って、ＴｉＮ膜２６およびＣｒＮ膜２８
は、それぞれ１μｍ以上の膜厚を有し、かつこのＴｉＮ
膜２６とこのＣｒＮ膜２８を合わせた膜厚全体が１０μ
ｍ以下に設定されることにより、耐用性並びに耐磨耗性
に優れるという結果が得られた。Therefore, the TiN film 26 and the CrN film 28 are formed.
Have a film thickness of 1 μm or more, and
The total thickness of the film 26 and the CrN film 28 is 10μ
When the thickness was set to m or less, the result was excellent in durability and abrasion resistance.
【００２４】さらにまた、比較例１１では、ＴｉＮ膜２
６およびＣｒＮ膜２８の厚さが実施例３と同じであるも
のの、バルブスプリングリテーナ２０の座面２４を含む
一面側全面にＴｉＮ膜２６を下地にしたＣｒＮ膜２８が
設けられている。従って、比較例１１では、バルブスプ
リングリテーナ２０の非処理部３０に相当する角部に発
生する集中応力により、この角部皮膜部分からＣｒＮ膜
２８が容易に剥離してしまった。Furthermore, in Comparative Example 11, the TiN film 2 was used.
6 and the thickness of the CrN film 28 are the same as those in the third embodiment, the CrN film 28 on which the TiN film 26 is a base is provided on the entire one surface side including the seat surface 24 of the valve spring retainer 20. Therefore, in Comparative Example 11, the CrN film 28 was easily peeled from the corner film portion due to the concentrated stress generated at the corner portion corresponding to the non-processed portion 30 of the valve spring retainer 20.
【００２５】これに対して、実施例１〜１１では、集中
応力が発生し易い角部に防コーティングリング３２を配
設して皮膜を設けない非処理部３０が形成されている。
このため、集中応力によりＣｒＮ膜２８が剥離すること
がなく、耐用性が一挙に向上するという利点が得られ
た。On the other hand, in the first to eleventh embodiments, the non-processed portion 30 is formed in which the anti-coating ring 32 is provided at the corner where concentrated stress is likely to occur and the coating is not provided.
Therefore, the CrN film 28 is not peeled off due to the concentrated stress, and there is an advantage that the durability is improved all at once.
【００２６】[0026]
【発明の効果】以上のように本発明に係るＴｉ合金製バ
ルブスプリングリテーナによれば、以下の効果が得られ
る。As described above, the Ti alloy valve spring retainer according to the present invention has the following effects.
【００２７】バルブスプリングリテーナの面にＴｉＮ膜
とＣｒＮ膜が積層して設けられている。このため、Ｃｒ
Ｎ膜がＴｉＮ膜を介しバルブスプリングリテーナに対し
て剥がれ難い状態で強固に設けられるとともに、このバ
ルブスプリングリテーナの表面は、耐磨耗性に優れる前
記ＣｒＮ膜によって覆われている。従って、バルブスプ
リングリテーナは、耐用性および耐磨耗性が一挙に向上
するという効果が得られる。A TiN film and a CrN film are laminated on the surface of the valve spring retainer. Therefore, Cr
The N film is firmly provided in the valve spring retainer via the TiN film in a state of being hard to be peeled off, and the surface of the valve spring retainer is covered with the CrN film having excellent wear resistance. Therefore, the valve spring retainer has an effect that the durability and the abrasion resistance are improved at once.
【図１】本発明に係るＴｉ合金製バルブスプリングリテ
ーナが組み込まれたシリンダヘッドの概略構成図であ
る。FIG. 1 is a schematic configuration diagram of a cylinder head in which a valve spring retainer made of Ti alloy according to the present invention is incorporated.
【図２】前記バルブスプリングリテーナの縦断説明図で
ある。FIG. 2 is a vertical cross sectional view of the valve spring retainer.
【図３】表面処理前のバルブスプリングリテーナに防コ
ーティングリングが配設された状態を示す縦断説明図で
ある。FIG. 3 is a vertical cross-sectional explanatory view showing a state in which an anti-coating ring is arranged on a valve spring retainer before surface treatment.
【図４】前記バルブスプリングリテーナにＴｉＮ膜が設
けられた状態を示す縦断説明図である。FIG. 4 is a vertical cross-sectional explanatory view showing a state in which a TiN film is provided on the valve spring retainer.
【図５】前記バルブスプリングリテーナにＣｒＮ膜が設
けられた状態を示す縦断説明図である。FIG. 5 is a vertical cross-sectional explanatory view showing a state in which a CrN film is provided on the valve spring retainer.
【図６】ＴｉＮ膜およびＣｒＮ膜の厚さと耐久テスト結
果の関係図である。FIG. 6 is a diagram showing the relationship between the thickness of a TiN film and a CrN film and the result of a durability test.
１０…シリンダヘッド ２０…バルブス
プリングリテーナ ２２…弁ばね ２４…座面 ２６…ＴｉＮ膜 ２８…ＣｒＮ膜 ３０…非処理部 ３２…防コーテ
ィングリング10 ... Cylinder head 20 ... Valve spring retainer 22 ... Valve spring 24 ... Seat surface 26 ... TiN film 28 ... CrN film 30 ... Untreated part 32 ... Anti-coating ring
Claims (4)
持するためのＴｉ合金製バルブスプリングリテーナであ
って、 前記バルブスプリングリテーナは、前記弁ばねの一端が
係合する面にＴｉＮ膜を下地にしたＣｒＮ膜を設けるこ
とを特徴とするＴｉ合金製バルブスプリングリテーナ。1. A valve spring retainer made of a Ti alloy, which is built in an engine and supports one end of a valve spring, wherein the valve spring retainer has a TiN film as a base on a surface to which one end of the valve spring engages. A valve spring retainer made of a Ti alloy, characterized in that a CrN film is formed.
において、前記ＴｉＮ膜および前記ＣｒＮ膜が、それぞ
れ１μｍ以上の膜厚を有し、かつ該ＴｉＮ膜と該ＣｒＮ
膜を合わせた膜厚全体が１０μｍ以下であることを特徴
とするＴｉ合金製バルブスプリングリテーナ。2. The valve spring retainer according to claim 1, wherein the TiN film and the CrN film each have a film thickness of 1 μm or more, and the TiN film and the CrN film have a film thickness of 1 μm or more.
A valve spring retainer made of Ti alloy, wherein the total thickness of the combined films is 10 μm or less.
リテーナにおいて、前記Ｔｉ合金は、２重量％以上６重
量％以下のＡｌと、 ２重量％以上６重量％以下のＶと、 ２重量％以上８重量％以下のＣｏと、 全体の重量に対して０．０１重量％以上０．３重量％以
下のＢが含有されるＣｒ−Ｂ系金属化合物と、 からなる組成物を有し、 前記組成物の残部がＴｉおよび不可避不純物であること
を特徴とするＴｉ合金製バルブスプリングリテーナ。3. The valve spring retainer according to claim 1, wherein the Ti alloy is 2 wt% to 6 wt% Al, 2 wt% to 6 wt% V, and 2 wt% or more. 8% by weight or less of Co, and a Cr-B-based metal compound containing 0.01% by weight or more and 0.3% by weight or less of B with respect to the total weight of the composition. A valve spring retainer made of Ti alloy, characterized in that the balance of the material is Ti and inevitable impurities.
において、前記バルブスプリングリテーナの凹状角部
は、前記ＴｉＮ膜および前記ＣｒＮ膜が設けられない非
処理部を有することを特徴とするＴｉ合金製バルブスプ
リングリテーナ。4. The valve made of Ti alloy according to claim 1, wherein the concave corner portion of the valve spring retainer has an unprocessed portion where the TiN film and the CrN film are not provided. Spring retainer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23910594A JP3372369B2 (en) | 1994-10-03 | 1994-10-03 | Ti alloy valve spring retainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23910594A JP3372369B2 (en) | 1994-10-03 | 1994-10-03 | Ti alloy valve spring retainer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08100228A true JPH08100228A (en) | 1996-04-16 |
| JP3372369B2 JP3372369B2 (en) | 2003-02-04 |
Family
ID=17039887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23910594A Expired - Fee Related JP3372369B2 (en) | 1994-10-03 | 1994-10-03 | Ti alloy valve spring retainer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3372369B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6966539B2 (en) * | 2003-10-31 | 2005-11-22 | Orchid Orthopedic Solutions, Llc | Valve spring retainer |
| GB2567886A (en) * | 2017-10-31 | 2019-05-01 | I Holland Ltd | Tablet tools |
-
1994
- 1994-10-03 JP JP23910594A patent/JP3372369B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6966539B2 (en) * | 2003-10-31 | 2005-11-22 | Orchid Orthopedic Solutions, Llc | Valve spring retainer |
| GB2567886A (en) * | 2017-10-31 | 2019-05-01 | I Holland Ltd | Tablet tools |
| GB2567886B (en) * | 2017-10-31 | 2022-11-23 | I Holland Ltd | Tablet tools |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3372369B2 (en) | 2003-02-04 |
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