JP2003293113A - Molding die and manufacturing method therefor - Google Patents
Molding die and manufacturing method thereforInfo
- Publication number
- JP2003293113A JP2003293113A JP2002101338A JP2002101338A JP2003293113A JP 2003293113 A JP2003293113 A JP 2003293113A JP 2002101338 A JP2002101338 A JP 2002101338A JP 2002101338 A JP2002101338 A JP 2002101338A JP 2003293113 A JP2003293113 A JP 2003293113A
- Authority
- JP
- Japan
- Prior art keywords
- molding die
- carbide
- molding
- thermal spray
- metal
- 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
Landscapes
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、金属の塑性加工、
樹脂・金属の射出成形、セラミックス・金属の粉末成形
等に使用される成形金型及びその製造方法に関する。TECHNICAL FIELD The present invention relates to plastic working of metal,
The present invention relates to a molding die used for resin / metal injection molding, ceramics / metal powder molding, and the like, and a manufacturing method thereof.
【０００２】[0002]
【従来の技術】耐摩耗性が要求される成形金型の成形面
に、減圧プラズマ溶射により、ＷＣ─Ｃo の超硬被膜を
形成することが知られている（特開平１０−８１９４９
号公報参照）。そして、成形面と超硬被膜との密着性を
強化するため、真空熱処理を行い、その後に所定の寸法
になるよう研削加工し、更に研磨加工を行うこととして
いる。2. Description of the Related Art It is known that a WC--Co cemented carbide film is formed on a molding surface of a molding die, which is required to have wear resistance, by reduced pressure plasma spraying (JP-A-10-81949).
(See Japanese Patent Publication). Then, in order to enhance the adhesion between the molding surface and the cemented carbide film, a vacuum heat treatment is performed, followed by grinding to a predetermined size and further polishing.
【０００３】高硬度・耐摩耗性が求められる成形金型の
成形面に、可燃性ガスの燃焼炎を熱源とする溶射法によ
って、炭化物サーメットの凝集粒子を秒速１８０ｍ以上
の飛行速度で衝突させ、溶射被膜を形成することも知ら
れている（特開２０００−１７６３号公報参照）。前記
炭化物サーメットの凝集粒子は、粒径が０．１〜３μｍ
のＷＣ，Ｃr3Ｃ2 ，Ｂ4 Ｃ，ＴｉＣ，Ｚr Ｃ，ＮｂＣか
ら選択された１種以上の炭化物の粒子、及びＮｉ，Ｃ
ｒ，Ｃｏ，Ｍｏから選択された１種以上の金属もしくは
これらの合金の粒子からなる炭化物系サーメットの一次
粒子を造粒した、粒径５〜６０μｍの粒子である。そし
て、成形金型の成形面の角部の丸みが５０μｍ以下とな
るように研磨してエッジ部を形成する。Agglomerated particles of carbide cermet are made to collide with a molding surface of a molding die, which is required to have high hardness and wear resistance, at a flight speed of 180 m / sec or more by a thermal spraying method using a combustion flame of a combustible gas as a heat source. It is also known to form a thermal spray coating (see Japanese Patent Laid-Open No. 2000-1763). The agglomerated particles of the carbide cermet have a particle size of 0.1 to 3 μm.
Particles of one or more carbides selected from WC, Cr 3 C 2 , B 4 C, TiC, Zr C, NbC, and Ni, C
It is a particle having a particle size of 5 to 60 μm obtained by granulating primary particles of a carbide-based cermet made of particles of at least one metal selected from r, Co and Mo or alloys thereof. Then, the edge portion is formed by polishing so that the roundness of the corner portion of the molding surface of the molding die is 50 μm or less.
【０００４】これらの従来技術によって形成される被膜
は、炭化物系サーメットの溶射被膜であり、溶射被膜は
炭化物系サーメットの単相となり、炭化物の隙間に金属
が存在する均一組織であり、高硬度で耐摩耗性に優れて
いるが靱性がなく脆い。そのため、成形金型が高硬度の
異物を噛み込んだり、成形金型の組み合わせが不調のた
め、一方の金型の溶射被膜に相手の金型が接触したりす
ると、溶射被膜に亀裂や剥離が発生し、成形金型の寿命
を短くすることがあった。また、鍛造成形用の金型にお
いては、鍛造する材料の種類や鍛造形状によっては、成
形素材の滑りが良すぎて、形状が得にくい場合がある。
この場合には、塑性流れを抑制するために、成形面に凹
部又は凸部を形成することがあり、従来のサーメット被
膜では成形面の凹部又は凸部を起点として亀裂が生じ、
成形金型の寿命を短くしていた。そして、鍛造品の凹部
又は凸部を除去して製品にしていた。The coating formed by these conventional techniques is a thermal spray coating of a carbide cermet. The thermal spray coating is a single phase of the carbide cermet, has a uniform structure in which a metal is present in the interstices of the carbide, and has a high hardness. Has excellent wear resistance, but lacks toughness and is brittle. Therefore, if the molding die bites in high-hardness foreign matter, or the combination of the molding dies is unsuccessful, if the mating mold contacts the spray coating of one mold, cracks or peeling will occur in the spray coating. It may occur and shorten the life of the molding die. Further, in a die for forging molding, depending on the type of material to be forged and the forging shape, the molding material may slip too well and the shape may not be easily obtained.
In this case, in order to suppress the plastic flow, a concave portion or a convex portion may be formed on the molding surface, and in the conventional cermet coating, a crack is generated starting from the concave portion or the convex portion of the molding surface,
The life of the molding die was shortened. Then, the recesses or protrusions of the forged product were removed to obtain a product.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、溶射被膜が
形成された成形金型において、溶射被膜の靱性を高め、
成形金型の寿命を長くすることを第１の課題とし、成形
面に凹部や凸部を形成することなく、成形面の塑性流れ
を抑制することを第２の課題とする。DISCLOSURE OF THE INVENTION The present invention provides a molding die having a thermal spray coating formed thereon, which enhances the toughness of the thermal spray coating.
A first object is to prolong the life of the molding die, and a second object is to suppress the plastic flow on the molding surface without forming a concave portion or a convex portion on the molding surface.
【０００６】[0006]
【課題を解決するための手段】本発明は、成形金型の表
面に炭化物及び金属もしくはこれらの合金からなる溶射
材料が溶射されて、溶射被膜が形成された成形金型にお
いて、好適には粒径１〜１５μｍのＷＣ，Ｃr3Ｃ2 ，Ｂ
4 Ｃ，ＴｉＣ，Ｚr Ｃ，ＮｂＣから選択された１種以上
の炭化物、及びＮｉ，Ｃｒ，Ｃｏ，Ｍｏから選択された
１種以上の金属もしくはこれらの合金からなる炭化物系
サーメットの相、並びに好適には粒径５〜７０μｍのＮ
ｉ，Ｃｒ，Ｃｏ，Ｍｏから選択された１種以上の金属も
しくはこれらの合金の相の混合組織である溶射被膜が形
成されたことを特徴とする成形金型を第１構成とする。
本発明は、第１構成において、前記溶射被膜の面粗度が
１０〜１００μｍＲzであることを特徴とする成形金型
を第２構成とする。本発明は、成形金型の表面に炭化物
及び金属もしくはこれらの合金からなる溶射材料を溶射
して、溶射被膜を形成する成形金型の製造方法におい
て、ＷＣ，Ｃr3Ｃ2 ，Ｂ4 Ｃ，ＴｉＣ，Ｚr Ｃ，ＮｂＣ
から選択された１種以上の炭化物の粒子、及びＮｉ，Ｃ
ｒ，Ｃｏ，Ｍｏから選択された１種以上の金属もしくは
これらの合金の粒子からなる炭化物系サーメットの一次
粒子を造粒した二次粒子、並びにＮｉ，Ｃｒ，Ｃｏ，Ｍ
ｏから選択された１種以上の金属もしくはこれらの合金
の粒子を混合して溶射材料となし、この溶射材料を高速
フレーム溶射によって溶射被膜を形成することを特徴と
する成形金型の製造方法を第１製造方法とする。本発明
は、第１製造方法において炭化物系サーメットの一次粒
子の粒径を１〜１５μｍとなし、残部の金属もしくはこ
れらの合金の粒子の粒径を５〜７０μｍとなしたことを
特徴とする成形金型の製造方法を第２製造方法とする。
本発明は、第１及び第２製造方法において、前記溶射被
膜の面粗度を１０〜１００μｍＲz とすることを特徴と
する成形金型の製造方法を第３製造方法とする。DISCLOSURE OF THE INVENTION The present invention is a molding die in which a sprayed coating made of a carbide and a metal or an alloy thereof is sprayed on the surface of a molding die to form a sprayed coating, and preferably a grain is formed. WC, Cr 3 C 2 , B with a diameter of 1 to 15 μm
4 C, TiC, Zr C, NbC, one or more kinds of carbides, and Ni, Cr, Co, Mo, one or more kinds of metals or their alloys, and a carbide-based cermet phase, and preferred Has a particle size of 5-70 μm
A first aspect of the present invention is a molding die having a sprayed coating which is a mixed structure of phases of one or more metals selected from i, Cr, Co, and Mo or alloys thereof.
The present invention provides, in a second configuration, a molding die according to the first configuration, wherein the surface roughness of the thermal spray coating is 10 to 100 μmRz. The present invention relates to a method for producing a molding die in which a sprayed material consisting of a carbide and a metal or an alloy thereof is sprayed on the surface of the molding die to form a sprayed coating, and WC, Cr 3 C 2 , B 4 C, TiC, Zr C, NbC
Particles of one or more carbides selected from Ni, C
Secondary particles obtained by granulating primary particles of a carbide-based cermet composed of particles of one or more metals selected from r, Co, Mo or alloys thereof, and Ni, Cr, Co, M
A method for producing a molding die, which comprises mixing particles of one or more kinds of metals selected from o or their alloys to form a thermal spray material, and forming the thermal spray coating by high speed flame spraying of the thermal spray material. This is the first manufacturing method. The present invention is characterized in that in the first production method, the particle size of primary particles of the carbide-based cermet is set to 1 to 15 μm, and the particle size of the balance metal or these alloys is set to 5 to 70 μm. The mold manufacturing method is referred to as a second manufacturing method.
In the first and second manufacturing methods of the present invention, the third manufacturing method is a method for manufacturing a molding die, wherein the surface roughness of the thermal spray coating is 10 to 100 μmRz.
【０００７】本発明の製造方法で用いられた二次粒子
は、粒径１〜１５μｍの一次粒子を液状の有機高分子材
料のバインダーを介して造粒したものであり、二次粒子
の粒径は５〜７０μｍと考えられる。炭化物系サーメッ
トの二次粒子と同程度の粒径の金属・合金粒子とを混合
して溶射すると、溶射被膜は炭化物系サーメットの相
と、炭化物を含まない金属・合金（金属もしくはこれら
の合金）の相が混在する組織になる（後述の実施例の図
１を参照）。そのため、溶射被膜に外部から応力が掛か
ったときに、この金属・合金の相が弾性変形してそのエ
ネルギーを吸収するため、高い靱性を発揮すると考えら
れる。The secondary particles used in the production method of the present invention are obtained by granulating primary particles having a particle size of 1 to 15 μm through a binder of a liquid organic polymer material. Is considered to be 5 to 70 μm. When the secondary particles of the carbide-based cermet and the metal / alloy particles of the same particle size are mixed and sprayed, the sprayed coating is a phase of the carbide-based cermet and a metal / alloy (metal or alloy thereof) that does not contain carbide. (See FIG. 1 in the embodiment described later). Therefore, when stress is applied to the thermal spray coating from the outside, the metal / alloy phase elastically deforms and absorbs the energy, so that it is considered that high toughness is exhibited.
【０００８】本発明では、炭化物系サーメットの一次粒
子の粒径を１〜１５μｍとしている。この粒径が１μｍ
未満では微細過ぎて耐摩耗性が得られず、１５μｍを超
えると相手攻撃性が強くなり、成形品の面粗度の悪化や
成形時の焼き付きが発生し易くなる。また、本発明で
は、残部の金属・合金の相の粒径を５〜７０μｍとして
いる。この粒径が５μｍ未満では弾性変形能力が不足
し、７０μｍを超えると成形面表面に現れる金属の相の
粒子が大きくなり耐摩耗性が低下する。なお、被膜組成
上は炭化物系サーメットの金属・合金部分と残部の金属
・合金粒子との組成は類似しており、炭化物系サーメッ
トの金属・合金組成を増やすことも考えられる。しか
し、高い耐摩耗性と靱性を付与するためには、本発明の
とおり、炭化物系サーメット粒子と残部の金属・合金粒
子とを混合した溶射材料を溶射し、５〜７０μｍの粒径
の金属・合金の相を得ることが有効である。In the present invention, the particle size of the primary particles of the carbide cermet is 1 to 15 μm. This particle size is 1 μm
If it is less than the above range, it is too fine to obtain abrasion resistance, and if it exceeds 15 μm, the opponent attack property becomes strong, and the surface roughness of the molded product is deteriorated and seizure during molding is likely to occur. Further, in the present invention, the grain size of the balance metal / alloy phase is set to 5 to 70 μm. If this particle size is less than 5 μm, the elastic deformation ability is insufficient, and if it exceeds 70 μm, the particles of the metal phase appearing on the surface of the molding surface become large and wear resistance is reduced. In terms of coating composition, the composition of the metal / alloy portion of the carbide-based cermet is similar to that of the remaining metal / alloy particles, and it is conceivable to increase the metal / alloy composition of the carbide-based cermet. However, in order to impart high wear resistance and toughness, as in the present invention, a thermal spray material obtained by mixing carbide-based cermet particles with the rest of the metal / alloy particles is sprayed to form a metal / metal having a particle diameter of 5 to 70 μm. It is effective to obtain an alloy phase.
【０００９】溶射方法については、２０００°Ｃ〜３０
００°Ｃの可燃性ガスの燃焼炎により、粒子が４００ｍ
／秒以上の飛行速度の高速フレーム溶射で溶射被膜を形
成する。この溶射方法は、プラズマ溶射と比べ、溶射粉
末の加熱温度が低いので、炭化物系サーメット中の炭化
物の分解が少ない。金属・合金の相を含有していても、
従来の金属・合金の相を含有しないサーメット溶射被膜
と同等の耐摩耗性を有する。Regarding the thermal spraying method, 2000 ° C to 30
Particles 400m due to combustion flame of combustible gas at 00 ° C
The thermal spray coating is formed by high-speed flame spraying with a flight speed of at least 1 second. In this thermal spraying method, the heating temperature of the thermal spraying powder is lower than that in plasma thermal spraying, so that the decomposition of carbides in the carbide-based cermet is small. Even if it contains a metal / alloy phase,
Has the same wear resistance as conventional cermet sprayed coatings that do not contain metal / alloy phases.
【００１０】本発明では、溶射被膜の面粗度を１０〜１
００μｍＲz （十点平均粗さ）に制御している。溶射被
膜の面粗度は溶射粉末の粒径と相関があり、一般的には
溶射しただけの被膜面粗度は、粉末粒径と同程度にな
る。炭化物系サーメットを造粒した二次粒子を溶射する
と、造粒粉末は溶射時にその造粒が砕け、付着するとき
には粒径が１〜１５μｍの一次粒子の状態になる。この
炭化物系サーメットの二次粒子と粒径５μｍの金属・合
金粒子を混合して溶射すると、面粗度は１０μｍＲz と
なる。そして、粒径の大きい粉末を溶射した場合、表面
の粒子間の気孔も大きくなるため、この炭化物系サーメ
ットの二次粒子と粒径７０μｍの金属・合金粒子を混合
して溶射すると、面粗度は１００μｍＲz となる。この
ようにして、溶射被膜の面粗度を１０〜１００μｍＲz
に制御している。In the present invention, the surface roughness of the thermal spray coating is 10 to 1
It is controlled to 00 μmRz (10-point average roughness). The surface roughness of the sprayed coating has a correlation with the particle size of the sprayed powder, and in general, the surface roughness of the sprayed film is about the same as the powder particle size. When the secondary particles obtained by granulating the carbide-based cermet are sprayed, the granulated powder is crushed during the spraying, and when adhering, the particles are in the state of primary particles having a particle size of 1 to 15 μm. When the secondary particles of the carbide cermet and the metal / alloy particles having a particle size of 5 μm are mixed and sprayed, the surface roughness becomes 10 μm Rz. Further, when the powder having a large particle size is sprayed, the pores between the particles on the surface also become large. Therefore, when the secondary particles of the carbide-based cermet and the metal / alloy particles having a particle size of 70 μm are mixed and sprayed, the surface roughness is increased. Is 100 μm Rz. In this way, the surface roughness of the sprayed coating is 10 to 100 μmRz.
Have control over.
【００１１】溶射後の溶射被膜の面粗度を１０〜１００
μｍＲz （十点平均粗さ）に制御することにより、成形
面の塑性流れを抑制することができる。そのため、成形
金型の成形面に凹部もしくは凸部を成形する必要がなく
なり、成形後に成形品の凹部・凸部の除去加工が不要と
なる。ここで、面粗度が１０μｍＲz 以下では塑性流れ
の抑制効果がなく、面粗度が１００μｍＲz を超える
と、成形途中に成形体に転写された凹部が起点となって
成形終了段階で最大の塑性流れが起きた時に亀裂発生が
繋がる。After the thermal spraying, the surface roughness of the thermal spray coating is 10-100.
By controlling to μmRz (10-point average roughness), the plastic flow on the molding surface can be suppressed. Therefore, it is not necessary to form the concave portion or the convex portion on the molding surface of the molding die, and it is not necessary to remove the concave portion and the convex portion of the molded product after the molding. Here, when the surface roughness is 10 μmRz or less, there is no effect of suppressing the plastic flow, and when the surface roughness exceeds 100 μmRz, the concave portion transferred to the molded body during molding becomes the starting point and the maximum plastic flow at the end stage of molding. When it occurs, cracking will occur.
【００１２】[0012]
【発明の実施の形態】図２は、本発明をエンジンバルブ
の傘部の鍛造金型の上型に適用した実施の形態を示す。
エンジンバルブの成形中間体３には、軸部３Ｂと傘部を
形成するための軸部３Ｂよりも径が太い傘部成形部３Ａ
とがある。鍛造金型は、傘部の首形状を形成するための
下型（ダイ）２と、傘部の平面を成形するための上型
（パンチ）１とにより構成されている。発明の実施の形
態のその他の点は、発明の説明において記載したとおり
である。FIG. 2 shows an embodiment in which the present invention is applied to an upper die of a forging die for an umbrella portion of an engine valve.
In the engine valve molding intermediate 3, the umbrella portion molding portion 3A having a larger diameter than the shaft portion 3B and the shaft portion 3B for forming the umbrella portion.
There is. The forging die is composed of a lower die (die) 2 for forming a neck shape of the umbrella portion and an upper die (punch) 1 for forming a flat surface of the umbrella portion. Other points of the embodiment of the invention are as described in the description of the invention.
【００１３】[0013]
【実施例】粒径１〜１５μｍの炭化物系サーメットＷＣ
−Ｃr3Ｃ2 −Ｎｉの造粒粒子と、粒径５〜７０μｍのＮ
ｉ・Ｃｒ合金粒子の粉末を体積割合で１０〜２０％混合
して溶射材料とする。この溶射材料を高速フレーム溶射
により、上型１の合金工具鋼製の母材の成形面５に対し
て溶射し、溶射被膜４の厚みが０．４ｍｍ以上で、面粗
度４０μｍＲｚの被膜を形成した。図１は、実施例の溶
射被膜の断面組織の顕微鏡写真であり、大きく黒い部分
ＡはＮｉＣr の金属相であり、丸く白い部分ＢはＷ
Ｃ、小さく黒い部分Ｃは気孔であり、それ以外の部分は
Ｃr3Ｃ2とＮｉの混合相である。[Example] Carbide cermet WC having a particle size of 1 to 15 μm
-Cr 3 C 2 -Ni granulated particles and N having a particle size of 5 to 70 μm
A powder of i.Cr alloy particles is mixed in a volume ratio of 10 to 20% to obtain a thermal spray material. This spray material is sprayed onto the forming surface 5 of the base material made of alloy tool steel of the upper die 1 by high-speed flame spraying to form a spray coating 4 having a thickness of 0.4 mm or more and a surface roughness of 40 μmRz. did. FIG. 1 is a photomicrograph of the cross-sectional structure of the thermal spray coating of the example, where the large black portion A is the NiCr metallic phase and the round white portion B is W.
C, a small black portion C is a pore, and the other portion is a mixed phase of Cr 3 C 2 and Ni.
【００１４】図３はエンジンバルブの傘部の鍛造金型の
上型の比較例を示す。図３の上型１は、母材の下面に塑
性流れ抑制用の凹部６が形成され、上型１の成形面５に
炭化物系サーメットＷＣ−１２Ｃｏの溶射被膜が形成さ
れている。図３において、下型２は実施例の下型２と同
じであり、エンジンバルブの成形中間体３も実施例の成
形中間体３と同一である。FIG. 3 shows a comparative example of the upper die of the forging die for the umbrella portion of the engine valve. In the upper mold 1 of FIG. 3, a concave portion 6 for suppressing plastic flow is formed on the lower surface of the base material, and a sprayed coating of carbide cermet WC-12Co is formed on the molding surface 5 of the upper mold 1. In FIG. 3, the lower mold 2 is the same as the lower mold 2 of the embodiment, and the molding intermediate 3 of the engine valve is also the same as the molding intermediate 3 of the embodiment.
【００１５】[0015]
【表１】 [Table 1]
【００１６】表１は、実施例と比較例Ａ，Ｂ，Ｃの成形
金型により鍛造したエンジンバルブの試験結果を示す。
実施例のエンジンバルブは、炭化物系サーメットの相に
金属の相が混合した組織の溶射被膜に靱性があるため
に、１５０００回以上のショットを行っても亀裂が生ず
ることなく、長寿命であることが判明した。これに対し
て、炭化物系サーメットＷＣ−１２Ｃｏの溶射被膜が形
成された比較例Ａ、及び凹部が形成されたＷＣ−１２Ｃ
ｏの焼結体の比較例Ｂは、鍛造時の引張応力に耐えるこ
とができず、１回目のショットで亀裂が発生した。合金
工具鋼ＳＫＤ６１製の比較例Ｃは、摩耗が進行して十分
な寿命が得られなかった。Table 1 shows the test results of the engine valves forged by the molding dies of Examples and Comparative Examples A, B and C.
The engine valves of the examples have a long life without cracking even after performing 15,000 or more shots because the thermal spray coating of the structure in which the metal phase is mixed with the carbide cermet phase has toughness. There was found. On the other hand, Comparative Example A in which a thermal spray coating of carbide-based cermet WC-12Co was formed, and WC-12C in which a recess was formed.
Comparative Example B of the sintered body of No. o could not withstand the tensile stress at the time of forging, and a crack was generated in the first shot. In Comparative Example C made of alloy tool steel SKD61, wear progressed and a sufficient life could not be obtained.
【００１７】[0017]
【発明の効果】請求項１の成形金型は、溶射被膜が炭化
物サーメットの相と金属・合金の相との混合組織であ
る。そのため、耐摩耗性は炭化物サーメットの相の硬さ
によって確保され、また成形時の応力に対しては、金属
・合金の相が弾性変形して高い靱性を発揮し、亀裂の発
生を抑制する。従って、成形金型の寿命が長くなる。請
求項２の成形金型は、溶射被膜の面粗度が１０〜１００
μｍＲz であるので、この溶射被膜により、成形面の塑
性流れを抑制することができる。そのため、成形品の研
磨加工が不要となって、成形金型及び成形品のコストが
低減する。請求項３〜５の成形金型の成形方法により請
求項１，２の成形金型を容易に製造することができる。According to the molding die of claim 1, the sprayed coating has a mixed structure of a carbide cermet phase and a metal / alloy phase. Therefore, the wear resistance is ensured by the hardness of the phase of the carbide cermet, and the metal / alloy phase elastically deforms and exhibits high toughness against stress during molding, and suppresses the occurrence of cracks. Therefore, the life of the molding die is extended. In the molding die according to claim 2, the surface roughness of the thermal spray coating is 10 to 100.
Since it is μmRz, this thermal spray coating can suppress the plastic flow on the molding surface. Therefore, the polishing of the molded product is unnecessary, and the cost of the molding die and the molded product is reduced. The molding die according to claims 1 and 2 can be easily manufactured by the molding die molding method according to claims 3 to 5.
【図１】本発明の溶射被膜の断面組織の図面代用写真で
ある。FIG. 1 is a drawing-substituting photograph of a cross-sectional structure of a thermal spray coating of the present invention.
【図２】本発明の実施の形態を示す断面図である。FIG. 2 is a sectional view showing an embodiment of the present invention.
【図３】比較例の断面図である。FIG. 3 is a cross-sectional view of a comparative example.
Claims (5)
はこれらの合金からなる溶射材料が溶射されて、溶射被
膜が形成された成形金型において、 ＷＣ，Ｃr3Ｃ2 ，Ｂ4 Ｃ，ＴｉＣ，Ｚr Ｃ，ＮｂＣから
選択された１種以上の炭化物、及びＮｉ，Ｃｒ，Ｃｏ，
Ｍｏから選択された１種以上の金属もしくはこれらの合
金からなる炭化物系サーメットの相、並びにＮｉ，Ｃ
ｒ，Ｃｏ，Ｍｏから選択された１種以上の金属もしくは
これらの合金の相の混合組織である溶射被膜が形成され
たことを特徴とする成形金型。1. A molding die in which a sprayed material consisting of a carbide and a metal or an alloy thereof is sprayed on the surface of the molding die to form a sprayed coating, which comprises: WC, Cr 3 C 2 , B 4 C, TiC. , Zr C, NbC, one or more carbides, and Ni, Cr, Co,
Phases of carbide-based cermets composed of one or more metals selected from Mo or alloys thereof, and Ni, C
A molding die, wherein a sprayed coating having a mixed structure of phases of one or more metals selected from r, Co, and Mo or alloys thereof is formed.
ｍＲz であることを特徴とする請求項１の成形金型。2. The surface roughness of the thermal spray coating is 10 to 100 μm.
The molding die according to claim 1, which is mRz.
はこれらの合金からなる溶射材料を溶射して、溶射被膜
を形成する成形金型の製造方法において、 ＷＣ，Ｃr3Ｃ2 ，Ｂ4 Ｃ，ＴｉＣ，Ｚr Ｃ，ＮｂＣから
選択された１種以上の炭化物の粒子、及びＮｉ，Ｃｒ，
Ｃｏ，Ｍｏから選択された１種以上の金属もしくはこれ
らの合金の粒子からなる炭化物系サーメットの一次粒子
を造粒した二次粒子、並びにＮｉ，Ｃｒ，Ｃｏ，Ｍｏか
ら選択された１種以上の金属もしくはこれらの合金の粒
子を混合して溶射材料となし、この溶射材料を高速フレ
ーム溶射によって溶射被膜を形成することを特徴とする
成形金型の製造方法。3. A method for producing a molding die, which comprises spraying a thermal spray material composed of a carbide and a metal or an alloy thereof on the surface of the molding die to form a thermal spray coating, comprising: WC, Cr 3 C 2 , B 4 C , TiC, Zr C, NbC, one or more carbide particles, and Ni, Cr,
Secondary particles obtained by granulating primary particles of a carbide-based cermet composed of particles of one or more kinds of metals selected from Co and Mo or alloys thereof, and one or more kinds selected from Ni, Cr, Co and Mo. A method for producing a molding die, which comprises mixing particles of a metal or an alloy thereof to form a thermal spray material, and forming a thermal spray coating by high speed flame spraying of the thermal spray material.
１〜１５μｍとなし、残部の金属もしくはこれらの合金
の粒子の粒径を５〜７０μｍとなしたことを特徴とする
請求項３の成形金型の製造方法。4. The molding according to claim 3, wherein the primary particle size of the carbide-based cermet is 1 to 15 μm, and the particle size of the balance metal or alloy thereof is 5 to 70 μm. Mold manufacturing method.
ｍＲz とすることを特徴とする請求項３又は４の成形金
型の製造方法。5. The surface roughness of the thermal spray coating is 10 to 100 μm.
mRz is set, The manufacturing method of the shaping die of Claim 3 or 4 characterized by the above-mentioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002101338A JP2003293113A (en) | 2002-04-03 | 2002-04-03 | Molding die and manufacturing method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002101338A JP2003293113A (en) | 2002-04-03 | 2002-04-03 | Molding die and manufacturing method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003293113A true JP2003293113A (en) | 2003-10-15 |
Family
ID=29241754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002101338A Pending JP2003293113A (en) | 2002-04-03 | 2002-04-03 | Molding die and manufacturing method therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003293113A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1296314C (en) * | 2005-08-30 | 2007-01-24 | 武汉理工大学 | Nickel-picotite type infrared radiation ceramic powdered material for thermal spraying and preparation method |
| JP2008502804A (en) * | 2004-06-18 | 2008-01-31 | ゼネラル・エレクトリック・カンパニイ | Smooth outer coating for combustor components and method for coating the same |
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2002
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008502804A (en) * | 2004-06-18 | 2008-01-31 | ゼネラル・エレクトリック・カンパニイ | Smooth outer coating for combustor components and method for coating the same |
| CN1296314C (en) * | 2005-08-30 | 2007-01-24 | 武汉理工大学 | Nickel-picotite type infrared radiation ceramic powdered material for thermal spraying and preparation method |
| CN100381397C (en) * | 2006-10-12 | 2008-04-16 | 沈阳大陆激光成套设备有限公司 | Paint for laser nanometer cermet alloying of metallurgical hot roller |
| JP2011031247A (en) * | 2009-07-29 | 2011-02-17 | Mishima Kosan Co Ltd | Mold for continuous casting and method for manufacturing the same |
| CN102952986A (en) * | 2012-11-21 | 2013-03-06 | 邓湘凌 | Corrosion resistant high temperature resistant bearing material |
| CN102952985A (en) * | 2012-11-21 | 2013-03-06 | 邓湘凌 | High-hardness and high-toughness metal ceramic composition and preparation method thereof |
| CN102952987A (en) * | 2012-11-21 | 2013-03-06 | 邓湘凌 | High-hardness and high-toughness metal ceramic composition and preparation method thereof |
| JP2015183203A (en) * | 2014-03-20 | 2015-10-22 | 三島光産株式会社 | Continuous casting mold and method for manufacturing the same |
| KR102366085B1 (en) * | 2021-09-08 | 2022-02-23 | 이종진 | Corner processing and cutting system for steel sheet |
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