JPH03155410A - Manufacture of composite hollow member by atomization forming - Google Patents
Manufacture of composite hollow member by atomization formingInfo
- Publication number
- JPH03155410A JPH03155410A JP1295266A JP29526689A JPH03155410A JP H03155410 A JPH03155410 A JP H03155410A JP 1295266 A JP1295266 A JP 1295266A JP 29526689 A JP29526689 A JP 29526689A JP H03155410 A JPH03155410 A JP H03155410A
- Authority
- JP
- Japan
- Prior art keywords
- collector
- resistant
- corrosion
- wear
- 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.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims description 11
- 238000000889 atomisation Methods 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 46
- 239000000956 alloy Substances 0.000 claims abstract description 46
- 238000005260 corrosion Methods 0.000 claims abstract description 37
- 230000007797 corrosion Effects 0.000 claims abstract description 37
- 239000011810 insulating material Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 34
- 239000002245 particle Substances 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 11
- 238000001746 injection moulding Methods 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 claims description 5
- 238000009689 gas atomisation Methods 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 20
- 238000000465 moulding Methods 0.000 description 9
- 239000007921 spray Substances 0.000 description 9
- 239000004033 plastic Substances 0.000 description 8
- 229920003023 plastic Polymers 0.000 description 8
- 238000009750 centrifugal casting Methods 0.000 description 6
- 238000007751 thermal spraying Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000012779 reinforcing material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 238000005204 segregation Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/58—Details
- B29C45/62—Barrels or cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Coating By Spraying Or Casting (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、プラスチックス等の可塑物やセラミックス粒
子、金属粉末等の射出成形機及び同押出機に用いられる
シリンダー、ノズル等の複雑形状中空部品の製造方法に
関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention is applicable to complex-shaped hollow molding machines such as cylinders and nozzles used in injection molding machines and extruders for plastics such as plastics, ceramic particles, metal powder, etc. The present invention relates to a method for manufacturing parts.
（従来の技術）
従来から、プラスチックス射出成形機用シリンダーとし
て、ＳＡＣＭやＳＣＭ等の窒化シリンダーが汎用されて
いる。(Prior Art) Nitrided cylinders such as SACM and SCM have been widely used as cylinders for plastic injection molding machines.
しかし１強化プラスチックスや難燃性プスチックス、或
いはふっ素樹脂系の成形用として用いる場合には、上記
材料では耐食性、耐摩耗性が不充分であるので、遠心鋳
造法により、シリンダー内面に耐食、耐摩耗合金をライ
ニングした複合シリンダーが使用されてきている。However, when used for molding 1-reinforced plastics, flame-retardant plastics, or fluororesin-based materials, the corrosion and wear resistance of the above materials is insufficient. Composite cylinders lined with wear alloys have been used.
しかしながら、遠心鋳造法による複合シリンダーの製造
法では、
■ 遠心鋳造法では製造上の制約からライニング合金の
融点に限界があり、１０００〜１１００℃以下の融点を
有する成分系に限定される。However, in the method of manufacturing a composite cylinder by centrifugal casting, (1) In centrifugal casting, there is a limit to the melting point of the lining alloy due to manufacturing constraints, and the composition is limited to a component system having a melting point of 1000 to 1100°C or less.
■ 遠心鋳造法では耐摩耗性改善のため、ＷＣ等の高硬
度物質を強化材として添加するが、これらの強化材はマ
トリックス層の内部へ偏析しやすく、摺動面となる内周
表面側の存在量は極めてわずかである。■ In the centrifugal casting method, high hardness substances such as WC are added as reinforcing materials in order to improve wear resistance, but these reinforcing materials tend to segregate inside the matrix layer, and the inner peripheral surface that becomes the sliding surface. The amount present is extremely small.
■ 遠心鋳造工程で溶融した合金は、当然のことながら
、バックメタル（シリンダー本体を構成する鋼材）と接
触するが、合金層にはパックメタルから相当量の鉄分が
混入してくるため、期待されるほどの耐食性は得られな
い。■ The alloy melted in the centrifugal casting process naturally comes into contact with the back metal (steel material that makes up the cylinder body), but a considerable amount of iron from the pack metal mixes into the alloy layer, so this is not expected. It is not possible to obtain sufficient corrosion resistance.
■ 小径シリンダーでは充分な遠心力が得られないため
、シリンダー本体に対するライニング材の接合性を充分
に高めることができない。■ Since sufficient centrifugal force cannot be obtained with small diameter cylinders, it is not possible to sufficiently improve the bonding of the lining material to the cylinder body.
■ 遠心鋳造工程では母材とも１０００℃程度の高温に
加熱されるため、母材の機械的性質が損われることがあ
る。■ In the centrifugal casting process, both the base material is heated to a high temperature of about 1000°C, so the mechanical properties of the base material may be impaired.
■ 遠心鋳造法により形成されるライニング合金層は鋳
造組織であるため、成分偏析が著しく。■ The lining alloy layer formed by centrifugal casting has a cast structure, so there is significant component segregation.
かつ金属間化合物はかなり粗大化している。そのため、
ライニング層の強度及び靭性は良好とは言えず、耐食性
や耐摩耗性が不均一である。Moreover, the intermetallic compounds are considerably coarsened. Therefore,
The strength and toughness of the lining layer are not good, and the corrosion resistance and abrasion resistance are uneven.
等の問題がある。There are other problems.
一方、難燃性プラスチックス、硬質粒子添加プラスチッ
クス、セラミックス、磁性粉末及び金属粉末原料の混線
・押出成形装置に用いられるセグメントタイプ多軸シリ
ンダー内面には特に高度の耐食性、耐摩耗性が要求され
ている。このような要求特性を一応備えるものとして、
高Ｃ「系鋳鉄製スリーブシリンダーや、Ｃ０１Ｎｉ基自
溶性合金の溶射、肉盛によるスクリュウ孔内面のライニ
ング方式があるが、以下（Ａ）、（Ｂ）のような問題が
残されている。On the other hand, a particularly high degree of corrosion resistance and wear resistance is required for the inner surface of segment type multi-axis cylinders used in cross-wire and extrusion molding equipment for flame-retardant plastics, hard particle-added plastics, ceramics, magnetic powders, and metal powder raw materials. ing. Assuming that such required characteristics are provided,
There are methods of lining the inner surface of the screw hole with a sleeve cylinder made of high C type cast iron, thermal spraying with C01Ni base self-fluxing alloy, or overlay, but the following problems (A) and (B) remain.
（Ａ）高Ｃｒ系鋳鉄製スリーブの場合
■通常、よく用いられている成分系としてはＣ：２．３
〜３．０％、Ｃｒ：２３．Ｏ〜２８．０％。(A) In the case of high Cr cast iron sleeve ■The commonly used component system is C: 2.3
~3.0%, Cr:23. O~28.0%.
Ｍｏ：１．５％、 Ｃｕ： １ 、２％、Ｓｉ：１％、
Ｍｎ：０゜５〜１６５％、Ｎｉ： １ 、５％を含む合
金鋳鉄が耐食耐摩耗用に用いられているが、Ｃｏ、Ｎｉ
基出自溶性合金比べ、耐食、耐摩耗性に劣る。Mo: 1.5%, Cu: 1, 2%, Si: 1%,
Alloy cast iron containing Mn: 0°5 to 165% and Ni: 1.5% is used for corrosion and wear resistance, but Co, Ni
Inferior to corrosion and wear resistance compared to base self-fusing alloys.
■鋳造組織のため、（Ｆ６．Ｃｒ）Ｃ系の粗大炭化物及
び偏析により、機械的強度及び靭性が劣り、使用条件の
制約を受ける。■Since it is a cast structure, it has poor mechanical strength and toughness due to (F6.Cr)C-based coarse carbides and segregation, and is subject to restrictions on usage conditions.
（Ｂ）Ｃｏ、ＮＬ基自溶合金の溶射、肉盛ライニングの
場合
■小径スクリュウ孔の場合、溶射、肉盛できない等の施
工上の寸法制約がある。(B) In the case of thermal spraying and overlay lining of Co and NL-based self-fluxing alloys ■In the case of small-diameter screw holes, there are dimensional restrictions in construction, such as thermal spraying and overlay lining not being possible.
■溶射後のフェージング工程でのコントロール条件が多
く、ライニング層にバラツキが生じやすく、しかも鋳造
組織であるため、成分偏析が著しく、かつ晶出物は粗大
化する。そのため、ライニング層の強度及び靭性は良好
とは言えず、耐食、耐摩耗性も不均一である。■There are many control conditions in the fading process after thermal spraying, which tends to cause variations in the lining layer, and since it is a cast structure, component segregation is significant and crystallized substances become coarse. Therefore, the strength and toughness of the lining layer are not good, and the corrosion resistance and abrasion resistance are also uneven.
■溶融、凝固に伴うライニング部の収縮により過大な引
張応力が残留し、大型、複雑形状の場合、ライニング合
金が割れる場合がある。■ Excessive tensile stress remains due to shrinkage of the lining part due to melting and solidification, and in the case of large and complex shapes, the lining alloy may crack.
そこで、これらの問題点を解決するため、本出願人は、
耐食、耐摩耗合金を熱間静水圧加圧法（ＨＩＰ法）など
により内周面に形成したプラスチックス成形装置用複合
シリンダーを開発し、先に特公平１−２４６２０号にて
提案した。Therefore, in order to solve these problems, the applicant
We have developed a composite cylinder for plastic molding equipment in which a corrosion-resistant and wear-resistant alloy is formed on the inner circumferential surface by hot isostatic pressing (HIP method), etc., and previously proposed it in Japanese Patent Publication No. 1-24620.
（発明が解決しようとする課題）
しかし、本発明者らのその後の研究により、このような
複合材料においても、以下■〜■の問題点があることが
判明した。(Problems to be Solved by the Invention) However, subsequent research by the present inventors revealed that such composite materials also have the following problems (1) to (4).
■ ライニング合金を粉末状態でハンドリングするため
、酸素含有量が多くなる。■ Because the lining alloy is handled in powder form, the oxygen content increases.
■ 大型、長尺製品への対応が困難である。■ Difficult to handle large and long products.
■ ＷＣ等の高硬度物質を強化材として添加する場合、
これらの強化材粒子がマトリックス粒子と密度、粒径の
点で大きく異なると１強化材粒子の均一な分散が困難で
ある。■ When adding high hardness substances such as WC as reinforcing materials,
If these reinforcing material particles differ greatly from the matrix particles in terms of density and particle size, it is difficult to uniformly disperse each reinforcing material particle.
■ 工程数が多く、手間とコストがかかる。■ There are many steps, which is time-consuming and costly.
本発明は、かぎる問題点を解決でき、プラスティック材
の射出、押出成形等における過酷な条件にも十分耐える
耐食性、耐摩耗性及び靭性を備えた複合シリンダー、ノ
ズルを安価に製造できる方法を提供することを目的とす
るものである。The present invention solves the above problems and provides a method for inexpensively manufacturing composite cylinders and nozzles that have corrosion resistance, wear resistance, and toughness that can sufficiently withstand harsh conditions in injection molding, extrusion molding, etc. of plastic materials. The purpose is to
（課題を解決するための手段）
まず、本発明者らは、それらの問題点を解決し得る方法
として噴霧成形法に着目して鋭意研究を重ねた結果、耐
食、耐摩耗性合金の溶湯をガスアトマイズにより素材上
に噴霧積層することにより、密度の高い耐食、耐摩耗性
合金被覆層が得られるとの知見を得て、複雑形状部品本
体の表面上にそのような被覆層を形成する表面処理技術
を先に提案した（特願平１−９２４２号）。(Means for Solving the Problems) First, the inventors of the present invention focused on the spray molding method as a method that could solve these problems, and as a result of intensive research, they found that they We learned that a dense corrosion-resistant and wear-resistant alloy coating layer can be obtained by spraying and laminating layers on materials using gas atomization, and we developed a surface treatment to form such a coating layer on the surface of complex-shaped parts. The technology was first proposed (Patent Application No. 1-9242).
そこで１本発明者らは、この噴霧成形法を利用した表面
処理技術を複合シリンダー・ノズルの内面側に適用する
ことを試み、ここに本発明をなしたものである。Therefore, the present inventors attempted to apply a surface treatment technique using this spray molding method to the inner surface of a composite cylinder nozzle, and hereby, the present invention was accomplished.
すなわち、本発明は、射出、押出成形装置用シリンダー
、ノズルの内径面に耐食、耐摩耗性を付与するに当たり
、該内径面よりも小さな寸法の鋼製複雑形状棒材（コレ
クター）の表面に耐食耐摩耗性合金をガスアトマイズに
より被覆し、該コレクターを除去した後、被覆体を焼バ
メ、圧入等によってシリンダー・ノズル本体の内側に挿
入することを緩慢にする射出、押出成形装置用複合シリ
ンダー、ノズルの製造方法を要旨とするものである。That is, in imparting corrosion resistance and wear resistance to the inner diameter surface of cylinders and nozzles for injection and extrusion molding equipment, the present invention provides corrosion resistance to the surface of a complex-shaped steel bar (collector) having dimensions smaller than the inner diameter surface. A composite cylinder and nozzle for injection and extrusion molding equipment in which a wear-resistant alloy is coated by gas atomization, and after the collector is removed, the coated body is slowly inserted into the cylinder/nozzle body by shrink fitting, press fitting, etc. The gist is the manufacturing method.
以下に本発明を更に詳細に説明する。The present invention will be explained in more detail below.
（作用）
前述の如く本発明法は、まず、噴霧成形法を利用して耐
食耐摩耗性合金の溶湯をガスアトマイズによりコレクタ
ー上に噴霧積層することにより、密度の高い耐食耐摩耗
性合金波ｒｉｍを得て、次いでこの被覆体をシリンダー
・ノズル本体の内面側に利用するものである。(Function) As described above, the method of the present invention first utilizes a spray molding method to spray and layer a molten corrosion-resistant and wear-resistant alloy onto a collector by gas atomization, thereby forming a highly dense corrosion- and wear-resistant alloy corrugated rim. This coating is then used on the inner surface of the cylinder nozzle body.
このように噴霧成形法を利用するので、被覆体の密度が
高く、９８％以上の密度も可能であり、また被覆体の厚
さに制限がないという優れた効果が得られる。Since the spray molding method is utilized in this manner, the coating has a high density, and a density of 98% or more is possible, and there is no limit to the thickness of the coating, which is an excellent effect.
■ 鳳１」１η劃皇
本発明法では、噴霧成形法によりコレクター表面に耐食
耐摩耗性合金を被覆するので、溶射法に比べ、９０％以
上の密度の被覆体が得られる。最適条件では１００％、
を通でも９５〜９７％の密度が得られる。しかも、溶射
法の場合には残留空孔が外部と連通しオープンであるの
に対し１本発明法によれば残留空孔があっても外部に連
通しない閉空孔であるので、耐食耐摩耗性の向上に寄与
する。また、溶融状態で被覆されるので酸素含有量も少
なくできると共に、硬質粒子を混合する場合でも均一な
分散が可能となる。In the method of the present invention, since the collector surface is coated with a corrosion-resistant and wear-resistant alloy by spray molding, a coated body with a density of 90% or more can be obtained compared to the thermal spray method. 100% under optimal conditions,
A density of 95-97% can be obtained even through Moreover, in the case of the thermal spraying method, the residual pores are open and communicate with the outside, whereas in the method of the present invention, even if there are residual pores, they are closed pores that do not communicate with the outside, so it has excellent corrosion and wear resistance. Contribute to the improvement of Furthermore, since the coating is applied in a molten state, the oxygen content can be reduced, and even when hard particles are mixed, uniform dispersion is possible.
しかも、更にコレクターを保温し又は降温防止すれば、
従来の噴霧成形法の欠陥であったコレクター近傍の被覆
積層面密度を飛鑵的に向上させることが可能となり、安
定して９８％以上の密度が確保できる。Moreover, if you further keep the collector warm or prevent the temperature from dropping,
It is now possible to dramatically improve the surface density of the coating layer near the collector, which was a defect in the conventional spray molding method, and it is possible to stably secure a density of 98% or more.
したがって、この被覆体をシリンダーやノズルの内面に
用いた場合、ごく僅かの研削仕上のみで仕上内径面が確
保され、仕上加工費の削減１合金の歩留向上に多大な効
果がある。Therefore, when this coating is used on the inner surface of a cylinder or nozzle, a finished inner diameter surface can be secured with only a slight grinding process, which has a great effect on reducing finishing costs and improving the yield of Alloy 1.
積層させる耐食耐摩耗性合金としては、耐食性と耐摩耗
性を兼ね備えた合金であれば特にその成分組成は制限さ
れない。例えば、先に特開昭６１−１４３５４７号で提
案したＣｏ基合金があり。The composition of the corrosion-resistant and wear-resistant alloy to be laminated is not particularly limited as long as it has both corrosion resistance and wear resistance. For example, there is a Co-based alloy previously proposed in JP-A-61-143547.
これはＣ： ０．５〜１．５％、Ｓｉ： １．０〜２．
０％、Ｂ ： ０．５〜２．５％、Ｎｉ：１０〜２０％
、Ｃｒ：２０〜３０％、Ｗ：１０〜２０％及び残部が実
質的にＣｏからなる耐食耐摩耗性合金である。This is C: 0.5-1.5%, Si: 1.0-2.
0%, B: 0.5-2.5%, Ni: 10-20%
, Cr: 20-30%, W: 10-20%, and the balance is substantially Co.
更に耐摩耗性を向上させる場合には、硬質粒子を含む耐
食耐摩耗性合金を積層するのが望ましい。In order to further improve wear resistance, it is desirable to laminate a corrosion-resistant and wear-resistant alloy containing hard particles.
この場合には、耐食性と耐摩耗性を兼ね備えた合金を母
合金とし、これに炭化物、窒化物、硼化物。In this case, the mother alloy is an alloy that has both corrosion resistance and wear resistance, and carbides, nitrides, and borides are added to this alloy.
セラミックス等の硬質粒子を含有させればよく、それら
の組成、構成は特に制限されない。It is sufficient to contain hard particles such as ceramics, and their composition and configuration are not particularly limited.
例えば、Ｍ、Ｂ、相（Ｍ：Ｎｉ又はＣｏ、Ｃｒ、 Ｍ。For example, M, B, phase (M: Ni or Co, Cr, M.
又はＷ）よりなる硬質相をマトリックス中に１５〜９５
％含む硬質合金であって、該硬質合金全体における含有
量がＢ：０．５〜９．０％、Ｃｒ：１４゜Ｑ〜３５．０
％、Ｍｏ及びＷの１種又は２種：１４゜０〜５０．０％
、Ｓｉ：３．５％以下、 Ｃｕ、 Ａｇ、Ａｕ及びＰｔ
の１種又は２種以上：ｏ、ｓ 〜２０．０％を含み、必
要に応じてＦｅ： ５．０％以下を含み。or W) in the matrix with a hard phase of 15 to 95
%, the content of the entire hard alloy is B: 0.5 to 9.0%, Cr: 14°Q to 35.0%.
%, one or two of Mo and W: 14°0 to 50.0%
, Si: 3.5% or less, Cu, Ag, Au and Pt
One or more of: o, s - 20.0%, and if necessary, Fe: 5.0% or less.
残部がＮｉ及びＣｏの１種又は２種と不可避的不純物か
らなると共に、マトリックスが貴な腐食電位を有する耐
食耐摩耗性合金被覆が望ましい、この場合、Ｎ１（一部
又は全部をＣＯで置換）−Ｍｏ（一部又は全部をＷで置
換）−８ｉ−Ｃｕ（一部又は全部をＰｔ、Ａｇ及びＡｕ
の１種又は２種以上で置換）の母合金に、ＢとＮｉ又は
Ｃ０１Ｃｒ、Ｍｏ又はＷとのポライドを添加すればよい
。A corrosion-resistant and wear-resistant alloy coating in which the remainder consists of one or two of Ni and Co and unavoidable impurities and whose matrix has a noble corrosion potential is desirable; in this case, N1 (partially or fully replaced with CO) -Mo (partly or completely replaced with W) -8i-Cu (partly or completely replaced with Pt, Ag and Au)
A polide of B and Ni or C01Cr, Mo or W may be added to the mother alloy of (replaced with one or more of).
このような合金の被覆方法としては、例えば、耐食耐摩
耗性の母合金の溶湯をコレクターの表面にガスアトマイ
ズすると共に、該アトマイズ流中に別途供給される硬質
粒子を分散混合せしめる方法がある。これによれば、コ
レクター表面に硬質粒子を含む所定の厚さの耐食耐摩耗
性合金層を空隙率が２％以下で空孔が実質的に閉空孔で
あるように積層することができる。勿論、硬質粒子がマ
トリックス中に均一に分散される。As a method for coating such an alloy, for example, there is a method in which a molten metal of a corrosion-resistant and wear-resistant master alloy is gas-atomized onto the surface of the collector, and hard particles separately supplied are dispersed and mixed in the atomized flow. According to this, a corrosion-resistant and wear-resistant alloy layer of a predetermined thickness containing hard particles can be laminated on the collector surface so that the porosity is 2% or less and the pores are substantially closed. Of course, the hard particles are uniformly dispersed within the matrix.
なお、前述の効果は、コレクターを保温したり、或いは
コレクターの降温を防止することにより、−層大きくな
るが、コレクターを保温するには、予めコレクターを予
熱しておき、これを保温管内にアトマイズ瞬間まで挿入
しておくなどの方法がある。また、コレクターの降温を
防止するには。The above-mentioned effect can be achieved by keeping the collector warm or by preventing the collector from dropping in temperature.However, in order to keep the collector warm, it is necessary to preheat the collector in advance and atomize it in a heat-retaining tube. There is a method such as inserting it until the moment. Also, to prevent the collector from cooling down.
コレクター表面に予めセラミックス等の断熱剤を固着さ
せ被覆しておくのが良い。It is best to cover the collector surface with a heat insulating material such as ceramics.
■ 抜ｌ豊災亙工
溶射法の場合、積層厚さは５ｍｍが限度であり、これを
超えると接合強度が低下する。一方、本発明法では、積
層粉末が溶融状態で次々と飛来して積層していくため、
極めて高い密度を保ちながら、積層厚さを自由に増加さ
せることができる。■ In the case of the special thermal spraying method, the lamination thickness is limited to 5 mm, and if it exceeds this, the bonding strength will decrease. On the other hand, in the method of the present invention, the laminated powder is fused one after another and is laminated, so
Lamination thickness can be increased freely while maintaining extremely high density.
その他の利点として、コレクター上に被覆層を形成する
ので、大型、長尺の複合中空製品（シリンダー、ノズル
）への対応も十分できる。Another advantage is that since a coating layer is formed on the collector, it can be used for large and long composite hollow products (cylinders, nozzles).
（実施例） 次に本発明の実施例を示す。(Example) Next, examples of the present invention will be shown.
失庭五よ
まず、第１図に示すように、コレクター母材１として軟
鋼棒材を準備し、更に、コレクター母材１に直接接触す
るアトマイズ粉の過冷却を防止するために、コレクター
母材１の表面に断熱剤（例。First, as shown in Figure 1, a mild steel bar is prepared as the collector base material 1, and furthermore, in order to prevent the atomized powder that comes into direct contact with the collector base material 1 from overcooling, the collector base material is Insulating material (example) on the surface of 1.
ジルコニア）２を２０〜１００μｍの厚さでコーティン
グした。Zirconia) 2 was coated with a thickness of 20 to 100 μm.
一方、積層用の耐食耐摩耗合金として、Ｃ：０゜９８％
、Ｓｉ：１．３４％、Ｂ：１．７０％、Ｎｉ： １５．
５％、Ｃｒ：２４．８％、Ｗ：１３．５％、Ｃｕ：１゜
０９％、残部：ＣＯからなる組成のＣｏ基合金を準備し
た。On the other hand, as a corrosion-resistant and wear-resistant alloy for lamination, C: 0°98%
, Si: 1.34%, B: 1.70%, Ni: 15.
A Co-based alloy having a composition of 5% Cr: 24.8%, W: 13.5%, Cu: 1°09%, and the balance: CO was prepared.
次いで、第２図に示す装置を使用してコレクター表面に
耐食耐摩耗合金を噴霧積層した。この場合、上記合金を
溶解炉３にて溶解し、タンデイツシュ５に移す。タンデ
イツシュ底のノズル穴から落下する合金溶湯４はＮｔガ
スを用いたアトマイザ−６で噴霧化され、コレクター７
上に積層する。Next, a corrosion-resistant and wear-resistant alloy was sprayed and laminated on the collector surface using the apparatus shown in FIG. In this case, the above alloy is melted in the melting furnace 3 and transferred to the tundish 5. The molten alloy 4 falling from the nozzle hole at the bottom of the tundish is atomized by an atomizer 6 using Nt gas, and then transferred to a collector 7.
Layer on top.
この時、耐摩耗性を更に向上させるためには、インジェ
クター９によって炭化物、窒化物、硼化物。At this time, in order to further improve wear resistance, the injector 9 injects carbides, nitrides, and borides.
セラミックス等の硬質粒子１０を合金中に含有させても
よい。Hard particles 10 such as ceramics may be included in the alloy.
なお、コレクター７は、アトマイズ直前まで内側にヒー
ター１１を有する鋼製保温管１２にて３ｏＯ℃程に予熱
されており、アトマイズ直前に保温管１２はアトマイズ
エリア外へ移動する。The collector 7 is preheated to about 300° C. by a steel heat-retaining tube 12 having a heater 11 inside until just before atomization, and the heat-retaining tube 12 is moved out of the atomization area just before atomization.
コレクター７は所定厚さの被覆体８を得るために回転し
ながら、前進する動きを駆動装置１３によって与えられ
る。The collector 7 is given forward motion by a drive device 13 while rotating to obtain a coating 8 of a predetermined thickness.
こうして得られた被覆体８は、その外周面を機械加工仕
上げした後、第３図に示すように、予め内周面が機械加
工仕上げされているシリンダー本体１６に焼バメ、圧入
等により挿入し、その後、コレクター７を除去し、被覆
体の内周面を機械加工仕上げする。これにより、車軸シ
リンダーが得られる。After the outer circumferential surface of the thus obtained covering body 8 is machined and finished, as shown in FIG. 3, it is inserted into the cylinder body 16 whose inner circumferential surface has been machined and finished by shrink fitting, press fitting, etc. After that, the collector 7 is removed and the inner circumferential surface of the covering is finished by machining. This results in an axle cylinder.
去、１ｆＬｌん
実施例１において、コレクター母材として、第４図に示
すコレクターが得られる形状のものを使用した以外は同
様の条件により被覆体を得、第４図に示す断面形状の２
軸シリンダーを得た。A covering body was obtained under the same conditions as in Example 1, except that the collector base material having the shape that would yield the collector shown in FIG. 4 was used as the collector base material.
Obtained an axial cylinder.
去】１１走
実施例１と同様の要領にて、第５図に示す断面形状のノ
ズルを得た。但し、コレクターとしては軸方向に２分し
た分割型コレクターを使用した。11 In the same manner as in Example 1, a nozzle having the cross-sectional shape shown in FIG. 5 was obtained. However, the collector used was a split collector divided into two in the axial direction.
（発明の効果）
以上詳述したように、本発明によれば、噴霧成形法によ
り耐食耐摩耗性合金被覆体を得て、この被覆体をシリン
ダー、ノズル本体に焼バメ、圧入等により挿入し、その
後、コレクターを除去する工程によるので、被覆体は９
８％以上の如く高い密度を有し、したがって、プラスチ
ックス材の射出、押出成形等における過酷な条件にも十
分耐える耐食性、耐摩耗性及び靭性を備えた複合シリン
ダー、ノズルを安価に提供することができる。(Effects of the Invention) As detailed above, according to the present invention, a corrosion-resistant and wear-resistant alloy coating is obtained by a spray molding method, and this coating is inserted into a cylinder or a nozzle body by shrink fitting, press fitting, etc. , and then the collector is removed, so the covering is 9
To provide a composite cylinder and a nozzle at low cost that have a high density such as 8% or more and therefore have corrosion resistance, wear resistance, and toughness sufficient to withstand severe conditions in injection molding, extrusion molding, etc. of plastic materials. Can be done.
第１図はコレクター母材を示す断面図、第２図は本発明
法の実施に用いる装置の一例を示す概略説明図、
第３図は車軸シリンダーを示す図で、（ａ）は横断面図
、（ｂ）は縦断面図であり。
第４図は２軸シリンダーを示す図で、（ａ）は横断面図
、（ｂ）は（ａ）のＡ−Ａ断面図であり、第５図はノズ
ルを示す断面図である。
１・・・コレクター母材、２・・・断熱剤、３・・・溶
解炉。
４・・・溶湯、５・・・タンデイツシュ、６・・・アト
マイザ７・・・コレクター、８・・・被覆体、９・・・
インジェクター １０・・・硬質粒子、１１・・・ヒー
ター １２・・・保温管、１３・・・駆動装置、１４・
・・チャンバー１５・・・排気管、１６・・・シリンダ
ー母材、１７・・・分割型コレクター １８・・・ノズ
ル母材。Fig. 1 is a cross-sectional view showing the collector base material, Fig. 2 is a schematic explanatory drawing showing an example of the device used to carry out the method of the present invention, Fig. 3 is a view showing the axle cylinder, and (a) is a cross-sectional view. , (b) is a longitudinal sectional view. FIG. 4 is a diagram showing a two-axis cylinder, (a) is a cross-sectional view, (b) is a cross-sectional view taken along line AA in (a), and FIG. 5 is a cross-sectional view showing a nozzle. 1... Collector base material, 2... Heat insulating agent, 3... Melting furnace. 4... Molten metal, 5... Tundish, 6... Atomizer 7... Collector, 8... Covering body, 9...
Injector 10... Hard particles, 11... Heater 12... Heat retention tube, 13... Drive device, 14...
...Chamber 15...Exhaust pipe, 16...Cylinder base material, 17...Divided collector 18...Nozzle base material.
Claims (6)
面に耐食、耐摩耗性を付与するに当たり、該内径面より
も小さな寸法の鋼製複雑形状棒材（以下、「コレクター
」と称する）の表面に耐食耐摩耗性合金をガスアトマイ
ズにより被覆し、該コレクターを除去した後、被覆体を
焼バメ、圧入等によってシリンダー・ノズル本体の内側
に挿入することを特徴とする射出、押出成形装置用複合
シリンダー、ノズルの製造方法。(1) In order to impart corrosion resistance and wear resistance to the inner diameter surface of cylinders and nozzles for injection and extrusion molding equipment, complex-shaped steel bars (hereinafter referred to as "collectors") with dimensions smaller than the inner diameter surface are used. A composite for injection and extrusion molding equipment, characterized in that the surface is coated with a corrosion-resistant and wear-resistant alloy by gas atomization, and after removing the collector, the coating is inserted inside the cylinder/nozzle body by shrink fitting, press fitting, etc. Manufacturing method for cylinders and nozzles.
記載の方法。(2) The method according to claim 1, wherein the density of the covering is 98% or more.
（Ｍ：Ｎｉ又はＣｏ、Ｃｒ、Ｍｏ又はＷ）よりなる硬質
相をマトリックス中に１５〜９５％含む硬質合金であっ
て、該硬質合金全体における含有量（ｗｔ％、以下同じ
）がＢ：０．５〜９．０％、Ｃｒ：１４．０〜３５．０
％、Ｍｏ及びＷの１種又は２種：１４．０〜５０．０％
、Ｓｉ：３．５％以下、Ｃｕ、Ａｇ、Ａｕ及びＰｔの１
種又は２種以上：０．５〜２０．０％を含み、残部がＮ
ｉ及びＣｏの１種又は２種と不可避的不純物からなると
共に、マトリックスが貴な腐食電位を有するものである
請求項１に記載の方法。(3) The corrosion-resistant and wear-resistant alloy coating layer is a hard alloy containing 15 to 95% of a hard phase consisting of M_3B_2 phase (M: Ni or Co, Cr, Mo or W) in the matrix, and the hard alloy The total content (wt%, same below) is B: 0.5 to 9.0%, Cr: 14.0 to 35.0
%, one or two of Mo and W: 14.0 to 50.0%
, Si: 3.5% or less, 1 of Cu, Ag, Au and Pt
Species or two or more species: Contains 0.5 to 20.0%, the remainder being N
2. The method according to claim 1, wherein the matrix comprises one or two of i and Co and unavoidable impurities and has a noble corrosion potential.
母合金の溶湯をコレクターの表面にガスアトマイズする
と共に、該アトマイズ流中に別途供給される硬質粒子を
分散混合せしめ、コレクター表面に硬質粒子を含む所定
の厚さの耐食耐摩耗性合金層を空隙率が２％以下で空孔
が実質的に閉空孔であるように積層することを特徴とす
る方法。(4) In the method according to claim 1, the molten metal of the corrosion-resistant and wear-resistant master alloy is gas-atomized onto the surface of the collector, and hard particles separately supplied in the atomized flow are dispersed and mixed to form hard particles on the collector surface. A method characterized by laminating a corrosion-resistant and wear-resistant alloy layer of a predetermined thickness containing particles so that the porosity is 2% or less and the pores are substantially closed.
ターに被覆するに当たり、コレクターを予め別ゾーンに
て予熱し、かつアトマイズゾーンに挿入する時、コレク
ターの外周面に保温管を同時に挿入し、該保温管は鋼製
で内側にヒーターを有し、アトマイズ瞬間までコレクタ
ーを保温し、アトマイズの瞬間に保温管をコレクターの
アトマイズエリア外に移動し、アトマイズガスによるコ
レクター表面の冷却を防止する請求項１に記載の方法。(5) When coating the collector with the corrosion-resistant and wear-resistant alloy by gas atomization, the collector is preheated in a separate zone, and when inserted into the atomization zone, a heat-retaining tube is simultaneously inserted into the outer peripheral surface of the collector, and the heat-retaining tube is inserted into the outer peripheral surface of the collector. The tube is made of steel and has a heater inside to keep the collector warm until the moment of atomization, and at the moment of atomization, the heat preservation tube is moved outside the atomization area of the collector to prevent the collector surface from being cooled by the atomization gas. Method described.
剤を固着させ、コレクター上に最初のアトマイズ粉末が
被覆された瞬間の熱伝達を緩慢にする請求項１に記載の
方法。(6) The method according to claim 1, wherein the collector has a heat insulating material such as ceramic adhered to its surface to slow heat transfer at the moment the collector is coated with the first atomized powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1295266A JPH03155410A (en) | 1989-11-14 | 1989-11-14 | Manufacture of composite hollow member by atomization forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1295266A JPH03155410A (en) | 1989-11-14 | 1989-11-14 | Manufacture of composite hollow member by atomization forming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03155410A true JPH03155410A (en) | 1991-07-03 |
Family
ID=17818368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1295266A Pending JPH03155410A (en) | 1989-11-14 | 1989-11-14 | Manufacture of composite hollow member by atomization forming |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03155410A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0644016A1 (en) * | 1993-09-16 | 1995-03-22 | Praxair S.T. Technology, Inc. | Process for coating the internal surface of hollow bodies |
| CN103381539A (en) * | 2012-05-01 | 2013-11-06 | 福特全球技术公司 | Cylinder bore with selective surface treatment and method of making the same |
| WO2017035919A1 (en) * | 2015-08-28 | 2017-03-09 | 南通高欣耐磨科技股份有限公司 | Preparation method for highly wear-resistant, repairable conical double machine barrel |
| US10220453B2 (en) | 2015-10-30 | 2019-03-05 | Ford Motor Company | Milling tool with insert compensation |
-
1989
- 1989-11-14 JP JP1295266A patent/JPH03155410A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0644016A1 (en) * | 1993-09-16 | 1995-03-22 | Praxair S.T. Technology, Inc. | Process for coating the internal surface of hollow bodies |
| CN103381539A (en) * | 2012-05-01 | 2013-11-06 | 福特全球技术公司 | Cylinder bore with selective surface treatment and method of making the same |
| WO2017035919A1 (en) * | 2015-08-28 | 2017-03-09 | 南通高欣耐磨科技股份有限公司 | Preparation method for highly wear-resistant, repairable conical double machine barrel |
| US10220453B2 (en) | 2015-10-30 | 2019-03-05 | Ford Motor Company | Milling tool with insert compensation |
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