JP2001011599A - Die-casting member - Google Patents
Die-casting memberInfo
- Publication number
- JP2001011599A JP2001011599A JP18149599A JP18149599A JP2001011599A JP 2001011599 A JP2001011599 A JP 2001011599A JP 18149599 A JP18149599 A JP 18149599A JP 18149599 A JP18149599 A JP 18149599A JP 2001011599 A JP2001011599 A JP 2001011599A
- Authority
- JP
- Japan
- Prior art keywords
- crn
- erosion
- pin body
- thickness
- film
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、耐久性に優れた
ダイカスト用部材に関するものである。The present invention relates to a die-casting member having excellent durability.
【０００２】[0002]
【従来の技術】金型のキャビティや鋳抜きピン、あるい
は湯口、プランジャスリーブ、プランジャ先端部分（チ
ップ）等は、高温のＡｌ合金等の溶融金属と接触するこ
とから、耐溶損性に優れていることが要求される。この
対策として、例えば特開平８−２０９３３１号公報に開
示されているように、ＣｒＮ被膜を鋼母材表面にアーク
イオンプレーティング（ＡＩＰ）表面処理により形成す
ることで耐溶損性を確保するようにしたダイカスト用部
材が提案されている。上記アークイオンプレーティング
（ＡＩＰ）表面処理は、従来より一般に行われているタ
フトライド処理等に比べて耐久性の向上が認められる。
そして、上記提案例によれば、ＣｒＮ被膜の膜厚は７〜
２０μｍが最適であるとなされている。2. Description of the Related Art Mold cavities and cast pins, gates, plunger sleeves, plunger tip portions (tips), and the like come in contact with molten metal such as high-temperature Al alloy, and therefore have excellent erosion resistance. Is required. As a countermeasure, for example, as disclosed in JP-A-8-209331, a CrN film is formed on the surface of a steel base material by arc ion plating (AIP) to ensure erosion resistance. Die casting members have been proposed. The durability of the arc ion plating (AIP) surface treatment is recognized to be improved as compared with the conventional tufftrid treatment and the like.
Then, according to the above proposed example, the thickness of the CrN film is 7 to
20 μm is said to be optimal.
【０００３】[0003]
【発明が解決しようとする課題】しかし、本出願人が検
証試験したところ、溶湯と接触するダイカスト用部材の
ような過酷な冷熱サイクルを受ける部材においては、Ｃ
ｒＮ被膜の膜厚が上記の提案例のように厚すぎると密着
性が悪化してＣｒＮ被膜が剥離し易くなり、耐溶損性も
低下するという結果を得た。However, as a result of a verification test conducted by the present applicant, it has been found that a member subjected to a severe cooling / heating cycle such as a die casting member that comes into contact with a molten metal has a C value.
When the film thickness of the rN film is too thick as in the above-mentioned proposed example, the adhesion is deteriorated, the CrN film is easily peeled off, and the result that the erosion resistance is lowered is obtained.
【０００４】そこで、本出願人は、研究を重ねた結果、
ＣｒＮ被膜の耐剥離性及び耐溶損性は、ＣｒＮ被膜を形
成する前の鋼母材の表面粗さにきわめて深く関わってい
ることを見出した。さらには、ＣｒＮ被膜の組成配向も
耐溶損性に影響を及ぼすことも判った。[0004] Accordingly, the present applicant has made extensive studies and found that
It has been found that the peeling resistance and the erosion resistance of the CrN coating are extremely closely related to the surface roughness of the steel base material before the formation of the CrN coating. Furthermore, it was also found that the composition orientation of the CrN coating also affected the erosion resistance.
【０００５】この発明はかかる点に鑑みてなされたもの
であり、その目的とするところは、ダイカスト用部材の
耐剥離性及び耐溶損性を高めようとすることである。The present invention has been made in view of the foregoing, and an object of the present invention is to improve the peeling resistance and erosion resistance of a die casting member.
【０００６】[0006]
【課題を解決するための手段】上記の目的を達成するた
め、この発明は、鋼母材の表面状態とＣｒＮ被膜の膜厚
とに工夫を凝らしたことを最大の特徴とし、さらには、
ＣｒＮ被膜の組成配向をも特定したことを特徴とする。Means for Solving the Problems In order to achieve the above-mentioned object, the present invention is characterized by devising the surface condition of the steel base material and the thickness of the CrN film.
The composition orientation of the CrN coating is also specified.
【０００７】具体的には、この発明は、ＣｒＮ被膜が鋼
母材表面に物理蒸着法による表面処理により形成された
ダイカスト用部材を対象とし、次のような解決手段を講
じた。More specifically, the present invention is directed to a die casting member in which a CrN coating is formed on a surface of a steel base material by a physical vapor deposition method, and has taken the following solution.
【０００８】すなわち、請求項１に記載の発明は、上記
鋼母材の表面粗さは、最大高さ（ＪＩＳ Ｂ ０６０１
に準拠）４．０μｍＲmax 以下であり、上記ＣｒＮ被膜
の膜厚は、１．０〜７．０μｍであることを特徴とす
る。That is, according to the first aspect of the present invention, the surface roughness of the steel base material is the maximum height (JIS B 0601).
The thickness of the CrN coating is 1.0 to 7.0 μm.
【０００９】上記の構成により、請求項１に記載の発明
では、鋼母材の表面精度が高まり、ＣｒＮ被膜が鋼母材
表面に良好に密着してＣｒＮ被膜が鋼母材表面から剥離
し難くなり、かつ耐溶損性も高まる。According to the above construction, in the first aspect of the present invention, the surface accuracy of the steel base material is enhanced, the CrN coating is in close contact with the steel base material surface, and the CrN coating is less likely to peel off from the steel base material surface. And the erosion resistance also increases.
【００１０】請求項２に記載の発明は、請求項１に記載
の発明において、ＣｒＮ被膜は、ミラー指数（１１１）
のＣｒＮ結晶面を少なくとも含んでいることを特徴とす
る。According to a second aspect of the present invention, in the first aspect, the CrN film has a Miller index (111).
Characterized in that at least the CrN crystal plane is included.
【００１１】上記の構成により、請求項２に記載の発明
では、耐溶損性が向上する。これは、ミラー指数（１１
１）のＣｒＮ結晶面は活性化エネルギーが高くて化学反
応に対して安定な構造を形成するため、溶損量が減少す
るものと推測される。[0011] With the above configuration, in the second aspect of the invention, the erosion resistance is improved. This is the Miller index (11
It is presumed that the CrN crystal plane of 1) has a high activation energy and forms a structure that is stable to chemical reactions, so that the amount of erosion decreases.
【００１２】[0012]
【発明の実施の形態】以下、この発明の実施の形態を図
面に基づいて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１３】図５はこの発明の実施の形態に係るダイカ
スト用部材としての鋳抜きピン１を示す。この鋳抜きピ
ン１は、例えば合金工具鋼（ＪＩＳ材質記号 ＳＫＤ６
１）製のピン本体２を備え、このピン本体２を鋼母材と
してその表面にＣｒＮ被膜３が物理蒸着法（ＰＶＤ）に
よる表面処理としてのアークイオンプレーティング（Ａ
ＩＰ）表面処理により形成されている。FIG. 5 shows a cast pin 1 as a die casting member according to an embodiment of the present invention. The cast pin 1 is made of, for example, alloy tool steel (JIS material code SKD6).
1) The pin body 2 is made of a steel material, and a CrN coating 3 is formed on the surface of the pin body 2 by a physical vapor deposition method (PVD).
IP) It is formed by surface treatment.
【００１４】この発明の特徴として、上記ピン本体２の
表面粗さは、最大高さ（ＪＩＳ Ｂ０６０１に準拠）
４．０μｍＲmax 以下であり、上記ＣｒＮ被膜３の膜厚
は、１．０〜７．０μｍである。また、上記ＣｒＮ被膜
３は、ミラー指数（１１１）のＣｒＮ結晶面を少なくと
も含んでいる。As a feature of the present invention, the surface roughness of the pin body 2 is a maximum height (based on JIS B0601).
The CrN film 3 has a thickness of 1.0 to 7.0 μm. The CrN coating 3 contains at least a CrN crystal plane having a Miller index (111).
【００１５】上記ピン本体２の表面粗さを最大高さ（Ｊ
ＩＳ Ｂ ０６０１に準拠）４．０μｍＲmax 以下にし
たのは、図１に示すピン本体２の表面粗さと溶損量との
関係を示すデータから明らかなように、最大高さ４．０
μｍＲmax を超えると、溶損量が急激に増加するからで
ある。因みに、溶損量は、最大高さが４．０μｍＲmax
未満では多くて約２５×１０-3ｍｇ／ｍｍ2 であった
が、最大高さが５．０μｍＲmax になると９０×１０-3
ｍｇ／ｍｍ2 近くまで急増していることがデータから判
る。そして、最大高さが１．０〜３．０μｍＲmax で
は、溶損量が５×１０-3ｍｇ／ｍｍ2 未満と最も少なく
かつ安定していることから、この範囲がより好ましいと
言える。最大高さが１．０μｍＲmax 未満の場合は、表
面精度を高めるのに手間が掛かってあまり経済的ではな
いが、経済性に目をつぶれば最大高さが１．０μｍＲma
x 未満であっても何ら問題はない。なお、このデータ
は、ＣｒＮ被膜３の膜厚が１．０〜７．０μｍであるこ
と、ＣｒＮ被膜３がミラー指数（１１１）のＣｒＮ結晶
面を少なくとも含んでいることを前提にしているもので
ある。The surface roughness of the pin body 2 is set to the maximum height (J
In accordance with IS B 0601), the maximum height of 4.0 μm Rmax or less was set to 4.0 μmRmax or less, as apparent from the data showing the relationship between the surface roughness of the pin body 2 and the amount of erosion shown in FIG.
If it exceeds μmRmax, the amount of erosion increases sharply. By the way, the maximum amount of erosion was 4.0 μm Rmax.
If the maximum height is less than 5.0 μmRmax, the maximum height is about 25 × 10 −3 mg / mm 2 , but 90 × 10 −3 mg / mm 2.
It can be seen from the data that the concentration has rapidly increased to around mg / mm 2 . When the maximum height is 1.0 to 3.0 μm Rmax, the erosion amount is less than 5 × 10 −3 mg / mm 2, which is the smallest and stable. Therefore, it can be said that this range is more preferable. When the maximum height is less than 1.0 μmRmax, it takes time and effort to increase the surface accuracy and is not very economical.
There is no problem even if it is less than x. This data is based on the assumption that the thickness of the CrN coating 3 is 1.0 to 7.0 μm and that the CrN coating 3 includes at least a CrN crystal plane having a Miller index (111). is there.
【００１６】上記ＣｒＮ被膜３の膜厚を１．０〜７．０
μｍにしたのは、図２に示すＣｒＮ被膜３の膜厚と溶損
量との関係を示すデータから明らかなように、膜厚が
１．０μｍ未満であったり、逆に７．０μｍを超える
と、溶損量が急激に増加するからである。このように膜
厚が１．０μｍ未満で溶損量が急増するのは、あまり薄
すぎるとＣｒＮ被膜３内の微欠陥や異物の部分を通して
溶融金属が浸入してくるようになるからであり、逆に膜
厚が７．０μｍを超えても溶損量が急増するのは、膜厚
の増大とともにＣｒＮ被膜３の内部応力が増加し、繰り
返しの熱膨張収縮により亀裂が発生しやすくなってＣｒ
Ｎ被膜３が剥離しやすくなるからである。因みに、膜厚
が０．７μｍでは溶損量は約５２×１０-3ｍｇ／ｍｍ2
になっており、膜厚が９．０μｍでは溶損量は約２５×
１０-3ｍｇ／ｍｍ2 になっている。そして、膜厚が２．
０〜６．０μｍの範囲では、溶損量が５×１０-3ｍｇ／
ｍｍ2未満と最も少なくかつ安定していることから、こ
の範囲がより好ましいと言える。なお、このデータは、
ピン本体２の表面粗さが最大高さ（ＪＩＳ Ｂ ０６０
１に準拠）４．０μｍＲmax 以下であること、ＣｒＮ被
膜３がミラー指数（１１１）のＣｒＮ結晶面を少なくと
も含んでいることを前提にしているものである。The thickness of the CrN coating 3 is set to 1.0 to 7.0.
The reason why the thickness is set to μm is that the thickness is less than 1.0 μm or more than 7.0 μm as is clear from the data showing the relationship between the thickness of the CrN coating 3 and the amount of erosion shown in FIG. This is because the amount of erosion increases rapidly. The reason for the rapid increase in the amount of erosion when the film thickness is less than 1.0 μm is that if the film thickness is too small, the molten metal will penetrate through fine defects and foreign matter in the CrN coating 3, Conversely, the rapid increase in the amount of erosion even when the film thickness exceeds 7.0 μm is due to the fact that the internal stress of the CrN coating 3 increases as the film thickness increases, and cracks tend to occur due to repeated thermal expansion and contraction.
This is because the N coating 3 is easily peeled. Incidentally, when the film thickness is 0.7 μm, the amount of erosion is about 52 × 10 −3 mg / mm 2.
When the film thickness is 9.0 μm, the amount of erosion is about 25 ×
It is 10 −3 mg / mm 2 . Then, the film thickness is 2.
In the range of 0 to 6.0 μm, the amount of erosion is 5 × 10 −3 mg / mg.
This range is more preferable because it is the smallest and stable when it is less than mm 2 . This data is
The surface roughness of the pin body 2 is the maximum height (JIS B 060
It is assumed that the CrN coating 3 contains at least a CrN crystal plane having a Miller index (111).
【００１７】上記ＣｒＮ被膜３として、ミラー指数（１
１１）のＣｒＮ結晶面を少なくとも含んでいることを条
件にしたのは、図３に示すＣｒＮ被膜３の結晶面の組成
配向と溶損量との関係を示すデータから明らかなよう
に、ミラー指数（１１１）のＣｒＮ結晶面を含んでいる
場合は、溶損量が約８×１０-3ｍｇ／ｍｍ2 未満と少な
くなっているのに対し、ミラー指数（１１１）のＣｒＮ
結晶面を含んでいない場合は、溶損量が図３では１００
×１０-3ｍｇ／ｍｍ2 と約１４００×１０-3ｍｇ／ｍｍ
2 の２ポイントで示すように急激に増加するからであ
る。このことは、ミラー指数（１１１）のＣｒＮ結晶面
は活性化エネルギーが高くて化学反応が起こり難く安定
な構造を形成していることによるものであると推測され
る。なお、このデータは、ピン本体２の表面粗さが最大
高さ（ＪＩＳ Ｂ ０６０１に準拠）４．０μｍＲmax
以下であること、及びＣｒＮ被膜３の膜厚が１．０〜
７．０μｍであることを前提にしているものである。The CrN film 3 has a Miller index (1).
The condition that at least the CrN crystal plane of 11) is included is that the Miller index is apparent from the data showing the relationship between the composition orientation of the crystal plane of the CrN coating 3 and the amount of erosion shown in FIG. When a (111) CrN crystal plane is included, the amount of erosion is reduced to less than about 8 × 10 −3 mg / mm 2 , whereas the CrN of Miller index (111) is reduced.
When no crystal plane is included, the amount of erosion is 100 in FIG.
× 10 −3 mg / mm 2 and about 1400 × 10 −3 mg / mm
This is because it increases sharply as shown by two points of 2. This is presumed to be due to the fact that the CrN crystal plane having a Miller index (111) has a high activation energy and does not easily cause a chemical reaction to form a stable structure. This data indicates that the surface roughness of the pin body 2 is 4.0 μm Rmax, which is the maximum height (based on JIS B 0601).
Or less, and the thickness of the CrN coating 3 is 1.0 to
It is assumed that the thickness is 7.0 μm.
【００１８】また、図４のデータはＣｒＮ被膜３の膜厚
と剥離面積率との関係を示したものである。このデータ
から明らかなように、膜厚が７．０μｍを超えると剥離
面積率が急激に増加していることが判る。因みに、剥離
面積率は、膜厚が７．０μｍでは約２２％と少なかった
が、膜厚が８．０μｍでは約３７％、膜厚が９．０μｍ
では約６０％と多くなっている。なお、このデータは、
ピン本体２の表面粗さが最大高さ（ＪＩＳ Ｂ ０６０
１に準拠）４．０μｍＲmax 以下であること、及びＣｒ
Ｎ被膜３がミラー指数（１１１）のＣｒＮ結晶面を少な
くとも含んでいることを条件にしているものである。FIG. 4 shows the relationship between the thickness of the CrN film 3 and the peeling area ratio. As is clear from this data, it can be seen that the peeling area ratio sharply increases when the film thickness exceeds 7.0 μm. Incidentally, the peeling area ratio was as small as about 22% when the film thickness was 7.0 μm, but was about 37% when the film thickness was 8.0 μm and the film thickness was 9.0 μm.
In this case, it is about 60%. This data is
The surface roughness of the pin body 2 is the maximum height (JIS B 060
1) 4.0 μm Rmax or less, and Cr
The condition is that the N film 3 contains at least a CrN crystal plane having a Miller index (111).
【００１９】上記の図１〜４に示すデータは下記の要領
にて得たものである。なお、図３の横軸に示すＣｒＮ被
膜の結晶組成配向は、Ｘ線回析装置で測定したものであ
る。The data shown in FIGS. 1 to 4 are obtained in the following manner. The crystal composition orientation of the CrN coating shown on the horizontal axis in FIG. 3 was measured by an X-ray diffraction apparatus.
【００２０】＜溶損試験＞６５０℃のＡｌ合金の溶融金
属中に試験片（直径：１０mm、長さ：１００mmの合金工
具鋼（ＪＩＳ材質記号 ＳＫＤ６１）にアークイオンプ
レーティング（ＡＩＰ）表面処理によりＣｒＮ表面処理
したもの）を６０分間浸漬し、浸漬前後の試験片の重量
差から溶損量を測定した。<Melting Test> A specimen (diameter: 10 mm, length: 100 mm) of an alloy tool steel (JIS material code: SKD61) in a molten metal of Al alloy at 650 ° C. was subjected to arc ion plating (AIP) surface treatment. CrN surface-treated) was immersed for 60 minutes, and the amount of erosion was measured from the weight difference of the test piece before and after immersion.
【００２１】＜剥離面積率の試験＞６５０℃のＡｌ合金
の溶融金属中に試験片（直径：１０mm、長さ：１００mm
の合金工具鋼（ＪＩＳ材質記号 ＳＫＤ６１）にアーク
イオンプレーティング（ＡＩＰ）表面処理によりＣｒＮ
表面処理したもの）を１０秒間浸漬した後、直ちに水中
に浸漬して冷却し、このサイクルを５０００回繰り返し
てＣｒＮ被膜の剥離面積率を顕微鏡により測定した。<Test of Peeling Area Ratio> A test piece (diameter: 10 mm, length: 100 mm) was placed in a molten metal of an Al alloy at 650 ° C.
Alloy tool steel (JIS material code SKD61) with CrN by arc ion plating (AIP) surface treatment
After immersion for 10 seconds, it was immediately immersed in water and cooled, and this cycle was repeated 5000 times, and the peeling area ratio of the CrN film was measured with a microscope.
【００２２】次に、ピン本体２の表面粗さが最大高さ
（ＪＩＳ Ｂ ０６０１に準拠）４．０μｍＲmax 以下
であること、ＣｒＮ被膜３の膜厚が１．０〜７．０μｍ
であること、及びＣｒＮ被膜３がミラー指数（１１１）
のＣｒＮ結晶面を少なくとも含んでいることを条件にし
て製作した鋳抜きピン１（本発明例）と、従来より一般
に行われているタフトライド処理した鋳抜きピン（比較
例）とを用いて各種のＡｌ合金製の製品を鋳造した。製
品の種類や鋳造条件、あるいは鋳抜きピンの形状等によ
って鋳抜きピンの耐久性は区々であるが、平均すると、
比較例では、ショット数（鋳造回数）が約４０００回位
までは使用に耐えたが、これを超えると溶損が激しくな
って使用に耐えなくなった。これに対し、本発明例で
は、ショット数（鋳造回数）が約４５０００回位までは
溶損が少なく十分に使用に耐え得ることができた。Next, the surface roughness of the pin body 2 is not more than 4.0 μm Rmax (according to JIS B0601), and the thickness of the CrN coating 3 is 1.0 to 7.0 μm.
And that the CrN coating 3 has a Miller index (111)
Various types of cast pin 1 (inventive example) manufactured under the condition that at least the CrN crystal plane is included and a tufftrided treated cast pin (comparative example) conventionally used in general are used. A product made of an Al alloy was cast. The durability of the cast pin varies depending on the type of product, casting conditions, shape of the cast pin, etc., but on average,
In the comparative example, use was endurable up to about 4000 shots (the number of times of casting). However, when the number of shots exceeded this, erosion was so severe that it was not endurable. On the other hand, in the example of the present invention, the number of shots (the number of times of casting) was about 45,000 times, the melting loss was small and it was possible to sufficiently endure use.
【００２３】このことは、本発明例では、ピン本体２の
表面粗さ及びＣｒＮ被膜３の膜厚を上述の如く設定して
いるので、ピン本体２の表面精度を高めることができ、
ＣｒＮ被膜３の密着性を良好にしてＣｒＮ被膜３を剥離
し難くすることができ、かつ耐溶損性も高めることがで
きるものである。また、ＣｒＮ被膜３の組成配向を上述
の如く設定することで、ＣｒＮ結晶面が活性化エネルギ
ーが高くて化学反応に対して安定な構造を形成し、これ
により溶損量を減少させることができるものと思われ
る。This is because the surface roughness of the pin body 2 and the thickness of the CrN coating 3 are set as described above in the present invention, so that the surface accuracy of the pin body 2 can be improved.
The adhesion of the CrN coating 3 can be improved to make the CrN coating 3 difficult to peel off, and the erosion resistance can be increased. In addition, by setting the composition orientation of the CrN coating 3 as described above, the CrN crystal surface forms a structure having a high activation energy and a structure stable to a chemical reaction, whereby the amount of erosion can be reduced. It seems to be.
【００２４】なお、本例では、ピン本体２表面にＣｒＮ
被膜３を直接に形成したが、ピン本体２表面に単層又は
多層の複合化合物層、展延性を有する層、本発明による
ＣｒＮ相と熱膨張係数が近似している相等を物理蒸着法
等による種々の表面処理により予め形成しておき、この
上に上述の如き特徴を有する本発明のＣｒＮ被膜３を形
成することも、耐久性の向上に寄与する限り何ら支障は
ない。In this embodiment, the surface of the pin body 2 is made of CrN.
Although the coating 3 was formed directly, a single-layer or multi-layer composite compound layer, a layer having spreadability, and a phase having a thermal expansion coefficient similar to that of the CrN phase according to the present invention were formed on the surface of the pin body 2 by physical vapor deposition or the like. There is no problem in forming the CrN film 3 of the present invention having the above-mentioned characteristics on the surface in advance by various surface treatments, as long as it contributes to improvement in durability.
【００２５】また、本例では、ダイカスト用部材が鋳抜
きピン１である場合を示したが、これに限らず、金型の
キャビティ、湯口、プランジャスリーブ、プランジャ先
端部分（チップ）等、溶融金属が接触する部材であれば
よい。In this embodiment, the case where the die-casting member is the cast pin 1 has been described. However, the present invention is not limited to this, and the molten metal such as a mold cavity, a gate, a plunger sleeve, a plunger tip (chip), etc. Any member may be used as long as it is a member that contacts.
【００２６】さらに、本例では、ＣｒＮ被膜３をアーク
イオンプレーティング（ＡＩＰ）表面処理により形成し
たが、真空蒸着やスパッタリング等の他の物理蒸着法
（ＰＶＤ）による表面処理により形成してもよい。Further, in this embodiment, the CrN coating 3 is formed by arc ion plating (AIP) surface treatment, but may be formed by other physical vapor deposition (PVD) such as vacuum evaporation or sputtering. .
【００２７】[0027]
【発明の効果】以上説明したように、請求項１に係る発
明によれば、膜厚１．０〜７．０μｍのＣｒＮ被膜を表
面粗さが最大高さ（ＪＩＳ Ｂ ０６０１に準拠）４．
０μｍＲmax 以下の鋼母材表面に物理蒸着法による表面
処理により形成したので、ＣｒＮ被膜の耐剥離性及び耐
溶損性を共に高めることができる。As described above, according to the first aspect of the present invention, a CrN film having a film thickness of 1.0 to 7.0 μm has a maximum surface roughness (according to JIS B0601).
Since the steel base material having a thickness of 0 μm Rmax or less is formed by surface treatment using a physical vapor deposition method, both the peeling resistance and the erosion resistance of the CrN film can be improved.
【００２８】請求項２に係る発明によれば、ＣｒＮ被膜
にミラー指数（１１１）のＣｒＮ結晶面を少なくとも含
むようにしたので、活性化エネルギーが高いＣｒＮ結晶
面により溶融金属との化学反応が抑制されるため耐溶損
性を確保することができる。According to the second aspect of the present invention, since the CrN film contains at least a CrN crystal plane having a Miller index (111), a chemical reaction with the molten metal is suppressed by the CrN crystal plane having a high activation energy. Therefore, erosion resistance can be ensured.
【図１】鋳抜きピンのピン本体の表面粗さと溶損量との
関係を示すデータである。FIG. 1 is data showing the relationship between the surface roughness of a pin body of a cast pin and the amount of erosion.
【図２】鋳抜きピンのＣｒＮ被膜の膜厚と溶損量との関
係を示すデータである。FIG. 2 is data showing the relationship between the thickness of a CrN coating on a cast pin and the amount of erosion.
【図３】鋳抜きピンのＣｒＮ被膜結晶面の組成配向と溶
損量との関係を示すデータである。FIG. 3 is data showing the relationship between the composition orientation of the crystal face of the CrN coating of the blanked pin and the amount of erosion.
【図４】鋳抜きピンのＣｒＮ被膜の膜厚と剥離面積率と
の関係を示すデータである。FIG. 4 is data showing the relationship between the thickness of the CrN film of the cast pin and the peeling area ratio.
【図５】鋳抜きピンの先端部分を破断して示す拡大図で
ある。FIG. 5 is an enlarged view showing a cut end of a cast pin.
１ 鋳抜きピン（ダイカスト用部材） ２ ピン本体（鋼母材） ３ ＣｒＮ被膜 DESCRIPTION OF SYMBOLS 1 Casting pin (member for die casting) 2 Pin body (steel base material) 3 CrN coating
───────────────────────────────────────────────────── フロントページの続き (72)発明者 古賀 克司 広島県広島市安佐南区長束３丁目44番17− ８号 広島アルミニウム工業株式会社内 Ｆターム(参考） 4K029 AA00 AA02 BA58 BB07 BD03 BD05 CA03 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Katsushi Koga 3-44-17-8 Nagatsuka, Asaminami-ku, Hiroshima-shi, Hiroshima F-term in Hiroshima Aluminum Industry Co., Ltd. 4K029 AA00 AA02 BA58 BB07 BD03 BD05 CA03
Claims (2)
よる表面処理により形成されたダイカスト用部材であっ
て、 上記鋼母材の表面粗さは、最大高さ（ＪＩＳ Ｂ ０６
０１に準拠）４．０μｍＲmax 以下であり、 上記ＣｒＮ被膜の膜厚は、１．０〜７．０μｍであるこ
とを特徴とするダイカスト用部材。1. A die casting member in which a CrN film is formed on a surface of a steel base material by a surface treatment using a physical vapor deposition method, wherein the surface roughness of the steel base material is a maximum height (JIS B06).
Die-casting member, wherein the CrN film has a thickness of 1.0 to 7.0 μm.
て、 ＣｒＮ被膜は、ミラー指数（１１１）のＣｒＮ結晶面を
少なくとも含んでいることを特徴とするダイカスト用部
材。2. The die casting member according to claim 1, wherein the CrN coating includes at least a CrN crystal plane having a Miller index (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18149599A JP2001011599A (en) | 1999-06-28 | 1999-06-28 | Die-casting member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18149599A JP2001011599A (en) | 1999-06-28 | 1999-06-28 | Die-casting member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001011599A true JP2001011599A (en) | 2001-01-16 |
Family
ID=16101767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18149599A Pending JP2001011599A (en) | 1999-06-28 | 1999-06-28 | Die-casting member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001011599A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003300227A (en) * | 2002-04-08 | 2003-10-21 | Seikoh Giken Co Ltd | Mold for molding disc |
| GB2408712B (en) * | 2002-10-30 | 2006-02-01 | Honda Motor Co Ltd | Mold for casting and method of surface treatment thereof |
| EP1626104A1 (en) | 2004-08-10 | 2006-02-15 | Hitachi Metals, Ltd. | Member with coating layers used for casting |
| US7744056B2 (en) | 2006-09-27 | 2010-06-29 | Hitachi Metals, Ltd. | Hard-material-coated member excellent in durability |
| JP2011156549A (en) * | 2010-01-29 | 2011-08-18 | Toyota Motor Corp | Plunger device and plunger tip |
| JP2012183548A (en) * | 2011-03-04 | 2012-09-27 | Daido Steel Co Ltd | Die for die casting |
-
1999
- 1999-06-28 JP JP18149599A patent/JP2001011599A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003300227A (en) * | 2002-04-08 | 2003-10-21 | Seikoh Giken Co Ltd | Mold for molding disc |
| GB2408712B (en) * | 2002-10-30 | 2006-02-01 | Honda Motor Co Ltd | Mold for casting and method of surface treatment thereof |
| US7600556B2 (en) | 2002-10-30 | 2009-10-13 | Honda Motor Co., Ltd. | Mold for casting and method of surface treatment thereof |
| EP1626104A1 (en) | 2004-08-10 | 2006-02-15 | Hitachi Metals, Ltd. | Member with coating layers used for casting |
| US7159640B2 (en) | 2004-08-10 | 2007-01-09 | Hitachi Metals, Ltd. | Member used for casting |
| CN100335674C (en) * | 2004-08-10 | 2007-09-05 | 日立金属株式会社 | Member with coating layers used for casting |
| US7744056B2 (en) | 2006-09-27 | 2010-06-29 | Hitachi Metals, Ltd. | Hard-material-coated member excellent in durability |
| JP2011156549A (en) * | 2010-01-29 | 2011-08-18 | Toyota Motor Corp | Plunger device and plunger tip |
| JP2012183548A (en) * | 2011-03-04 | 2012-09-27 | Daido Steel Co Ltd | Die for die casting |
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