JPH0872110A - Member for injection molding machine, screw for injection molding machine, and method for manufacturing the screw - Google Patents
Member for injection molding machine, screw for injection molding machine, and method for manufacturing the screwInfo
- Publication number
- JPH0872110A JPH0872110A JP23450294A JP23450294A JPH0872110A JP H0872110 A JPH0872110 A JP H0872110A JP 23450294 A JP23450294 A JP 23450294A JP 23450294 A JP23450294 A JP 23450294A JP H0872110 A JPH0872110 A JP H0872110A
- Authority
- JP
- Japan
- Prior art keywords
- injection molding
- molding machine
- screw
- base
- stellite
- 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
Landscapes
- Laminated Bodies (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
(57)【要約】
【目的】 溶融Ｍｇを射出成形することができる射出
成形機を提供する。
【構成】 射出成形機用部材の基材１をＮｉ基または
Ｆｅ基の耐熱性材料で構成するとともに、該基材１の射
出用溶融金属との接触部表面に、Ｃｏ基耐熱性材料２を
被覆する。
【効果】 溶融Ｍｇとの接触部は、耐溶損性の高いＣ
ｏ基耐熱性材料で保護され、材料としての強度は、基材
によって確保されており、耐久性に優れた、信頼性の高
いＭｇ用射出成形機を得ることができる。
(57) [Summary] [Object] To provide an injection molding machine capable of injection molding molten Mg. [Structure] The base material 1 of the member for an injection molding machine is composed of a Ni-base or Fe-base heat-resistant material, and a Co-base heat-resistant material 2 is formed on the surface of the contact part of the base material 1 with the molten metal for injection. To cover. [Effect] The contact portion with molten Mg has a high melting resistance C
The Mg-based injection molding machine is protected by the o-based heat-resistant material, and the strength of the material is ensured by the base material, and the Mg injection molding machine has excellent durability and high reliability.
Description
【０００１】[0001]
【産業上の利用分野】この発明はＭｇや低融点金属等を
射出成形する射出成形機のスクリュ、シリンダ等の部材
および前記スクリュの製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to members such as screws and cylinders of an injection molding machine for injection molding Mg and low melting point metals, and a method for manufacturing the screw.
【０００２】[0002]
【従来の技術】Ｍｇ合金の成形加工は現在ダイキャスト
法が幅広く普及しているが、最近の新技術として、作業
環境の改善や成形加工効率を高めるため、射出成形法の
適用が試みられている。ところで、信頼性の高いＭｇ射
出成形機を得るためには、射出成形機用スクリュやシリ
ンダ部材は、長期間安定して使用できるものでなければ
ならず、以下の条件が必要となる。2. Description of the Related Art The die-casting method is now widely used for forming Mg alloys. As a recent new technology, it has been attempted to apply the injection molding method in order to improve the working environment and increase the forming efficiency. There is. By the way, in order to obtain a highly reliable Mg injection molding machine, the screw and the cylinder member for the injection molding machine must be able to be used stably for a long period of time, and the following conditions are required.
【０００３】１）溶融Ｍｇとの接触において溶損の少な
い材料であること。 ２）溶融Ｍｇの射出成形温度６００〜６５０℃に加熱し
たときの高温硬さが高く摩耗傷がつきにくい材料である
こと。 ３）スクリュ、シリンダなどの構造部材として上記高温
で長時間加熱した場合でも焼戻軟化を受けにくい高温強
度を有する材料であること。 すなわち、溶融Ｍｇと激しく接触するスクリュやシリン
ダ部材は溶損（溶融Ｍｇによる腐食損傷）の少ないもの
で、高温強度や高温加熱時の軟化抵抗の優れたものであ
ることが必要条件である。上記した特性を持つ材料とし
て、ＪＩＳ規格ＳＫＤ６１などのＦｅ基工具鋼がほぼ安
定した性能を示している。1) A material that causes little melting loss in contact with molten Mg. 2) A material that has a high high-temperature hardness when heated to an injection molding temperature of 600 to 650 ° C. of molten Mg and is resistant to abrasion scratches. 3) As a structural member such as a screw or a cylinder, a material having a high temperature strength that is unlikely to be tempered and softened even when it is heated at the above high temperature for a long time. That is, it is a necessary condition that the screw and the cylinder member that are in heavy contact with the molten Mg have little melting loss (corrosion damage due to the molten Mg) and have excellent high temperature strength and softening resistance at high temperature heating. As a material having the above-mentioned characteristics, Fe-based tool steel such as JIS standard SKD61 shows almost stable performance.
【０００４】[0004]
【発明が解決しようとする課題】しかし、前記した工具
鋼は、高温強度の点で必ずしも十分といえるものではな
く、さらには高温加熱での軟化の影響や固体Ｍｇに剪断
力を与えて溶融する迄の過程で摩耗傷がつき折損しやす
くなるなどの危険性もでてくることから長期使用には供
することができないという問題がある。このため、さら
に長い寿命を有する材料の開発が待たれている。However, the above-mentioned tool steel is not always sufficient in terms of high temperature strength, and further, it is melted by the effect of softening at high temperature heating and shearing force applied to solid Mg. There is a risk that it cannot be used for a long period of time because there is a risk that abrasion scratches will occur and it will be easily broken during the process. Therefore, the development of a material having a longer life is awaited.
【０００５】例えば高温強度に優れた材料としてインコ
ネル（商標名、以下同じ）７１８などが知られている
が、溶融Ｍｇによる溶損が著しく、射出成形機用材料と
して使用することは困難である。また、一般に工具材料
や弁材料として用いられるステライト（商標名、以下同
じ）や、その他のＣｏ基材は、高温強度に優れた材料で
あり、今回、研究の過程において、溶融Ｍｇによる溶損
が少ないことが判明したが、靱性がやや劣るのと高価で
あるため射出成形機用材料としては使用しづらいという
問題がある。For example, Inconel (trademark, the same applies hereinafter) 718 is known as a material having excellent high-temperature strength, but it is difficult to use it as a material for an injection molding machine due to remarkable melting loss due to molten Mg. In addition, Stellite (trademark name, the same applies hereinafter) and other Co base materials that are generally used as tool materials and valve materials are materials that have excellent high-temperature strength. Although it was found to be small, it has a problem that it is difficult to use as a material for an injection molding machine because it is slightly inferior in toughness and expensive.
【０００６】上記したように、単一の金属材料では、耐
溶損性、耐摩耗性、高温強度の全ての条件を満たすこと
は困難であり、Ｍｇ合金材料の射出成形をより困難なも
のとしている。本発明は、上記事情を背景としてなされ
たものであり、単独では射出成形機用部材の材料として
は用いることの出来ない、上記二種の材料を組み合わせ
ることによって射出成形機用部材の材料として使用する
ことを可能にし、その結果として互いの長所を活かした
長寿命の射出成形機用部材を提供することを目的とする
ものである。As described above, it is difficult for a single metal material to satisfy all the conditions of melting resistance, wear resistance and high temperature strength, which makes injection molding of Mg alloy material more difficult. . The present invention has been made in view of the above circumstances, and cannot be used alone as a material for an injection molding machine member. By combining the above two materials, the present invention can be used as a material for an injection molding machine member. Therefore, it is an object of the present invention to provide a long-life member for an injection molding machine, which makes the best use of each other's advantages.
【０００７】[0007]
【課題を解決するための手段】すなわち、本発明のう
ち、第１の発明の射出成形機用部材は、射出成形機用部
材の基材をＮｉ基またはＦｅ基の耐熱性材料で構成する
とともに、該基材の射出用溶融金属との接触部表面に、
Ｃｏ基耐熱性材料を被覆したことを特徴とする。また、
第２の発明の射出成形機用スクリュは、射出成形機用ス
クリュ芯材をＮｉ基またはＦｅ基の耐熱性材料で構成す
るとともに、該芯材のスクリュフライト山部表面にＣｏ
基耐熱性材料をライニングし、芯材の谷部表面には、硬
質金属皮膜を形成したことを特徴とする。That is, in the member for injection molding machine of the first invention of the present invention, the base material of the member for injection molding machine is made of a heat resistant material of Ni group or Fe group. , On the surface of the contact portion of the base material with the molten metal for injection,
It is characterized by being coated with a Co-based heat resistant material. Also,
In the screw for an injection molding machine of the second invention, the screw core material for the injection molding machine is made of a heat-resistant material of Ni-base or Fe-base, and Co is formed on the surface of the screw flight crest of the core material.
It is characterized in that a base heat resistant material is lined and a hard metal film is formed on the surface of the valley portion of the core material.
【０００８】さらに、第３の発明の射出成形機用スクリ
ュの製造方法は、射出成形機用スクリュ芯材をＮｉ基ま
たはＦｅ基の耐熱性材料で構成するとともに、該芯材の
スクリュフライト山部表面にＣｏ基耐熱性材料をライニ
ングし、さらに、芯材の谷部表面に、硬質金属皮膜を形
成した後、この硬質金属皮膜に対し、ヒュージングまた
は熱間静水圧加工による皮膜改善処理を行うことを特徴
とする。Further, in the method for manufacturing a screw for an injection molding machine of the third invention, the screw core material for the injection molding machine is made of a heat-resistant material of Ni-base or Fe-base, and the screw flight mountain portion of the core material is used. After lining the surface with a Co-based heat-resistant material, and further forming a hard metal film on the valley surface of the core material, the hard metal film is subjected to film improvement treatment by fusing or hot isostatic pressing. It is characterized by
【０００９】なお、本発明の射出成形機用部材として
は、溶融金属が常時接触するシリンダやスクリュが挙げ
られるが、この他に、シリンダヘッド、スクリュヘッ
ド、逆流防止リング、押し金、ノズルなどを挙げること
もできる。なお、本発明としては、射出成形機用部材の
全てに上記した基材を選定し、なおかつ、これに被覆を
施す必要はなく、適宜必要と思われる部材に適用するも
のであればよい。例えば、スクリュヘッドなどにＦｅ基
合金を消耗品的に使用することも可能であり、また、最
近では素材製造技術の発達によりステライト鍛造丸棒な
どの入手も可能であり、ステライトで中実のスクリュを
製造使用することも可能である。一方、シリンダヘッド
には、段付隅部に使用時５０kg/mm2を越える高応力が作
用することから、本発明を積極的に適用して、母材をＮ
ｉ基耐熱合金インコネルとし、溶融Ｍｇ接触部をステラ
イトライニングした構造のものを使用することが好まし
い。The members for the injection molding machine of the present invention include cylinders and screws with which molten metal is in constant contact, but in addition, cylinder heads, screw heads, backflow prevention rings, pushers, nozzles, etc. You can also list them. In the present invention, it is not necessary to select the above-mentioned base material for all of the members for the injection molding machine, and to apply a coating to the base material, as long as it is applied to a member considered necessary. For example, it is possible to use Fe-based alloys as consumables for screw heads, etc., and recently, due to the development of material manufacturing technology, it is possible to obtain stellite forged round bars, etc. It is also possible to manufacture and use. On the other hand, since a high stress exceeding 50 kg / mm 2 is applied to the stepped corners of the cylinder head when in use, the present invention is positively applied and the base material is N
It is preferable to use an i-based heat-resistant alloy Inconel having a structure in which the molten Mg contact portion is stellite lined.
【００１０】そして、本発明を適用する部材の基材とし
ては、インコネル７１８、インコネル７０６、インコネ
ルＸ−７５０、ティッセンＴ２８８８（ティッセン社製
商品名）に代表されるＮｉ、Ｆｅ基の耐熱合金を用いる
のが最も望ましい。例えば、インコネル７１８を成分比
（重量％）で示すと、 Ｎｉ Ｃｒ Ｍｏ Ｆｅ Ａｌ Ｔｉ Ｎｂ＋Ｔａ 残 １９％ ３％ １９％ ０.５％ ０.９％ ５.１％ で表される。As the base material of the member to which the present invention is applied, Ni-Fe heat-resistant alloys represented by Inconel 718, Inconel 706, Inconel X-750 and Thyssen T2888 (trade name of Thyssen) are used. Is most desirable. For example, when Inconel 718 is expressed as a component ratio (% by weight), it is represented by NiCrMoFeAlTiTiNb + Ta residue 19% 3% 19% 0.5% 0.9% 5.1%.
【００１１】また、上記基材の溶融金属接触部として
は、通常時に当然に溶融金属と接触する部位の他に、漏
れなどによって接触する可能性のあるシリンダ端面など
を対象とすることも可能である。したがっって、例えば
前述したシリンダヘッド端面にステライトをライニング
することも可能である。但し、このように漏れの可能性
のある部分は常時溶融金属が接触するものではないの
で、本発明のステライトでなく、比較的溶損の少ない工
具鋼などの材料で被覆したものであってもよい。なお、
本発明では溶融金属として主にＭｇを想定しているが、
これに限定されるものではなく、その他に、Ｚｎ、Ｐ
ｂ、Ａｌなどの低融点金属などを挙げることができる。Further, as the molten metal contact portion of the above-mentioned base material, in addition to a portion which naturally comes into contact with the molten metal at a normal time, it is also possible to target a cylinder end surface which may come into contact with the molten metal due to leakage or the like. is there. Therefore, for example, stellite can be lined on the end surface of the cylinder head described above. However, since the molten metal does not always come into contact with the portion that may leak as described above, even if it is coated with a material such as tool steel having relatively little melting loss, instead of the stellite of the present invention. Good. In addition,
Although Mg is mainly assumed as the molten metal in the present invention,
However, the present invention is not limited to this, and Zn, P
Examples thereof include low melting point metals such as b and Al.
【００１２】前記溶融金属接触部には、Ｃｏ基耐熱性材
料をライニングしたり、ライナー形状のＣｏ基耐熱性材
料を嵌合する（例えばシリンダ内面への嵌合）ことによ
ってＣｏ基耐熱性材料を被覆する。Ｃｏ基耐熱性材料と
しては、代表的にはステライト＃１，＃６，＃１２を挙
げることができるが、シリンダライニング材としてステ
ライト＃１２が、スクリュライニング材としてステライ
ト＃６が、それぞれ施工性や耐摩耗性の観点から相性が
良く好ましい材料である。 また、Ｃｏ基耐熱性合金と
しては、これらステライト以外に、ヘインズアロイ（商
品名）などのＣｏ基耐熱合金を挙げることもできる。こ
れらの成分（重量％）を一例として示すと、Ｃｏ：４０
〜６５％、Ｃｒ：２０〜３０％、Ｍｏ：最大６％、Ｗ：
最大１５％、Ｎｉ：最大３％、Ｆｅ：最大３％、Ｃ：最
大３％である。The molten metal contact portion is lined with a Co-based heat-resistant material, or a liner-shaped Co-based heat-resistant material is fitted (for example, fitted to the inner surface of the cylinder) to form a Co-based heat-resistant material. To cover. Typical examples of the Co-based heat-resistant material include Stellite # 1, # 6, and # 12. Stellite # 12 is used as the cylinder lining material and Stellite # 6 is used as the screw lining material. From the viewpoint of wear resistance, it is a material with good compatibility and is a preferable material. In addition to these stellites, examples of the Co-based heat-resistant alloy also include Co-based heat-resistant alloys such as Haynes Alloy (trade name). As an example of these components (% by weight), Co: 40
Up to 65%, Cr: 20 to 30%, Mo: up to 6%, W:
Maximum 15%, Ni: maximum 3%, Fe: maximum 3%, C: maximum 3%.
【００１３】さらに、スクリュにあっては、溶融金属接
触部である外表面を一様にステライトでライニングする
他に、第２の発明で示すようにフライトの山部と谷部で
表面処理を異ならせるのが望ましい。すなわち、フライ
トの山部では、上記と同様にＣｏ基耐熱性合金を被覆
し、谷部には、硬質クロムメッキ、ＴｉＣなどの化学蒸
着、Ｃｏ基耐熱性合金の金属溶射などによって硬質金属
皮膜を形成するのが望ましい。さらには、この金属皮膜
をフュージング、ＨＩＰなどによって皮膜改善処理を行
うのが望ましい。Further, in the screw, the outer surface, which is the molten metal contact portion, is uniformly lined with stellite, and the surface treatment is different between the peaks and troughs of the flight as shown in the second invention. It is desirable to let it. That is, the mountain portion of the flight is coated with the Co-based heat-resistant alloy in the same manner as described above, and the valley portion is coated with a hard metal film by hard chrome plating, chemical vapor deposition of TiC or the like, or metal spraying of the Co-based heat-resistant alloy. It is desirable to form. Further, it is desirable that the metal coating is subjected to coating improvement treatment by fusing, HIP or the like.
【００１４】[0014]
【作用】本発明によれば、溶融金属（例えばＭｇ）に接
触する射出成形機用部材（シリンダ内面やスクリュ外表
面など）は、溶損が少なく、高温硬さの高いＣｏ基耐熱
性材料（ステライトなど）で被覆されており、耐溶損
性、耐摩耗性が大幅に向上する。また、上記部材の基材
は、耐熱性に優れたＮｉ基またはＦｅ基の耐熱性材料で
構成されており、射出成形機用部材としての高温強度も
基材によって確保されている。したがって本発明によれ
ば、Ｍｇなどの溶融金属の射出成形機用部材として要求
される耐溶損性、耐摩耗性、高温強度の全ての条件を満
足することができ、射出成形機用部材の寿命が大幅に伸
びる。According to the present invention, a member for an injection molding machine (such as an inner surface of a cylinder or an outer surface of a screw) that comes into contact with a molten metal (for example, Mg) is a Co-based heat-resistant material having a low melting loss and a high temperature hardness ( It is coated with stellite, etc., and its erosion resistance and wear resistance are greatly improved. In addition, the base material of the above member is made of a heat resistant Ni-based or Fe-based material having excellent heat resistance, and the base material also secures high-temperature strength as a member for an injection molding machine. Therefore, according to the present invention, it is possible to satisfy all the conditions of melting loss resistance, wear resistance and high temperature strength required for a member for injection molding machine of molten metal such as Mg, and to improve the life of the injection molding machine member. Is greatly increased.
【００１５】次に、本発明における耐溶損性の向上効果
を図６に基づいて説明すると、本発明で被覆材として用
いるＣｏ基耐熱性材料（ステライト）は、他の比較材料
と比べて明らかに耐溶損性が優れている。また、本発明
で基材として用いられるＮｉ基耐熱性材料の一つである
インコネルは、溶融Ｍｇに直接接触させると著しく溶損
が起こることも示されている。Next, the effect of improving the corrosion resistance in the present invention will be described with reference to FIG. 6. The Co-based heat-resistant material (stellite) used as the coating material in the present invention is clearly compared with other comparative materials. Excellent melt resistance. It has also been shown that Inconel, which is one of the Ni-based heat-resistant materials used as the base material in the present invention, causes significant melting loss when it is brought into direct contact with molten Mg.
【００１６】また本発明のうち、第２の発明によれば、
スクリュフライトの谷部に、硬質クロムメッキ、ＴｉＣ
やＴｉＮなどの蒸着膜、１ｍｍ以下のＣｏ基耐熱合金の
金属溶射皮膜等の硬質金属皮膜を形成したので、Ｍｇや
その他の低融点金属によってスクリュウ母材が溶損や摩
耗損傷を受けるのを防止することができ、第１の発明よ
り安価にスクリュウを製造することができる。さらに第
３の発明によれば、スクリュフライトの谷部に形成した
硬質金属皮膜に、皮膜改善処理を施したので、皮膜が緻
密化され、またフライト谷部への密着性も大幅に向上
し、膜厚も１〜２ｍｍの範囲まで厚くすることが可能な
ので皮膜の耐久性も向上する。According to the second aspect of the present invention,
Hard chromium plating, TiC on the bottom of the screw flight
Since a hard metal film such as a vapor-deposited film of TiN or TiN, a metal sprayed film of a Co-based heat-resistant alloy of 1 mm or less is formed, it is possible to prevent the screw base material from being melted or worn by Mg or other low melting point metals. Therefore, the screw can be manufactured at a lower cost than the first invention. Further, according to the third invention, since the hard metal film formed on the valley portion of the screw flight is subjected to the film improving treatment, the film is densified, and the adhesion to the flight valley part is significantly improved, Since the film thickness can be increased to the range of 1 to 2 mm, the durability of the film is also improved.
【００１７】[0017]
【実施例】Ｍｇ射出成形機用スクリュおよびシリンダと
して次のものを製作使用した。 シリンダ； (C-1)インコネル７１８を用いて肉厚５０ｍｍで内径５
０ｍｍのシリンダ母材（基材）１を製作し、一方、ステ
ライト＃１２を用いて肉厚１０ｍｍのライナー２を遠心
鋳造により製作した。なお、このライナー２はＨＩＰ法
により製造することもできる。次いで前記ライナー２を
シリンダ母材１の内面に焼嵌めして射出成形機用シリン
ダを製造した。 (C-2)上記(C-1)と同様のシリンダ母材（図示しない）を
用意し、このシリンダ母材の内面にＨＩＰ法により上記
(C-1)と同様のステライト合金（以下同じ）を５ｍｍ厚
でライニングして射出成形機用シリンダを製造した。 (C-3)上記(C-2)のＨＩＰ法に代えて遠心鋳造法によりシ
リンダ母材の内面にステライト合金をライニングして射
出成形機用シリンダを製造した。EXAMPLES The following were manufactured and used as screws and cylinders for a Mg injection molding machine. Cylinder; (C-1) Inconel 718 with wall thickness of 50 mm and inner diameter of 5
A cylinder base material (base material) 1 having a thickness of 0 mm was manufactured, while a liner 2 having a thickness of 10 mm was manufactured by centrifugal casting using Stellite # 12. The liner 2 can also be manufactured by the HIP method. Then, the liner 2 was shrink-fitted onto the inner surface of the cylinder base material 1 to manufacture a cylinder for an injection molding machine. (C-2) Prepare a cylinder base material (not shown) similar to the above (C-1), and use the HIP method to apply the above to the inner surface of this cylinder base material.
A cylinder for an injection molding machine was manufactured by lining a stellite alloy similar to (C-1) (hereinafter the same) with a thickness of 5 mm. (C-3) A cylinder for an injection molding machine was manufactured by lining a cylinder base material with a stellite alloy by a centrifugal casting method instead of the HIP method of the above (C-2).
【００１８】スクリュ； (S-1)インコネル７１８を用いて円柱状にスクリュ芯材
用粗材を製造し、この粗材の表面に均一な外径で、ステ
ライト合金４をＨＩＰ法にて約１０ｍｍ厚にライニング
し、その後、ステライト合金部分を機械加工してスクリ
ュ形状にすることによってスクリュ芯材３にステライト
合金４がライニングされた射出成形機用スクリュを製造
した。 (S-2)インコネル７１８をスクリュウ形状に加工してス
クリュ芯材５を製作し、このスクリュ芯材５の外周部表
面に、ステライト合金を用いてＨＩＰ法によって３ｍｍ
厚のライニング６を形成して射出成形機用スクリュを製
作した。なお、このスクリュウでは、芯材のスクリュの
ネジ起点とステライトライニング層のネジ起点を合わせ
ることにより均一厚みのステライトを残し、スクリュフ
ライト部に母材の機械的バックアップ強度を高めた。Screw: (S-1) A cylindrical core material for a screw core is manufactured using Inconel 718, and a stellite alloy 4 having a uniform outer diameter is formed on the surface of the coarse material by the HIP method to a thickness of about 10 mm. After thickly lining, the Stellite alloy portion was machined into a screw shape to manufacture a screw for injection molding machine in which the Stellite alloy 4 was lined on the screw core material 3. (S-2) The Inconel 718 is processed into a screw shape to manufacture the screw core material 5, and the outer peripheral surface of the screw core material 5 is made to 3 mm by the HIP method using a stellite alloy.
A thick lining 6 was formed to manufacture a screw for an injection molding machine. In this screw, the screw starting point of the screw of the core material and the screw starting point of the stellite lining layer were matched to leave stellite of uniform thickness, and the mechanical backup strength of the base material was increased in the screw flight part.
【００１９】(S-3)インコネル７１８を用いてスクリュ
ウ形状に加工したスクリュ芯材５のフライト山部のみを
ステライト合金を用いてＰＴＡ溶接法により約２ｍｍ厚
のライニング８を形成し、一方、フライトの谷部にはプ
ラズマ溶射法によりＣｏ合金を約１．５ｍｍ厚みにライ
ニングして、加熱炉で約１０００〜１１００℃でヒュー
ジング処理した後、ＨＩＰ処理して密着力の優れた耐摩
耗コーティングを施した射出成形機用スクリュを製造し
た。 (他-1)シリンダヘッド１０を上記と同様のインコネル７
１８で構成し、このシリンダヘッド１０の内面に約３ｍ
ｍ厚でステライトライニング１１を形成し、またシリン
ダヘッド１０の両端面には、Ｆｅ基合金としてＪＩＳ
ＳＵＳ６３０を用いてライニング１２を形成してシリン
ダヘッドを製作した。(S-3) A lining 8 having a thickness of about 2 mm is formed by a PTA welding method using a stellite alloy only on the flight crest portion of the screw core material 5 processed into a screw shape by using Inconel 718. The valley portion of is coated with a Co alloy to a thickness of about 1.5 mm by the plasma spraying method, and is subjected to fusing treatment at about 1000 to 1100 ° C. in a heating furnace, and then subjected to HIP treatment to provide a wear-resistant coating having excellent adhesion. The applied injection molding machine screw was manufactured. (Other-1) The cylinder head 10 is replaced with the same Inconel 7 as above.
18 cylinders, and the inner surface of this cylinder head 10 is approximately 3 m
The stellite lining 11 is formed with a thickness of m, and the both ends of the cylinder head 10 are made of a Fe-based alloy according to JIS
A cylinder head was manufactured by forming the lining 12 using SUS630.
【００２０】上記したシリンダ（Ｃ−１〜３）、スクリ
ュ（Ｓ−１〜３）、シリンダヘッド（他−１）を適宜組
み合わせ、温度約６５０℃のＭｇの射出成形を実機試験
したところ、いずれの組み合わせにおいても、長期間使
用において溶損、摩耗の発生は認められず、優れた耐久
性を示した。また、比較のため、ＡＳＴＭ Ａ２８８合
金、ＪＩＳ ＳＫＤ６１工具鋼でスクリュウを構成し、
このスクリュウにステライトライニングを施したものに
ついて同様の実機試験を行ったところ、溶損は殆ど生じ
なかったが、長期間の使用において母材の材力が焼戻軟
化により低下し、曲り、変形のため耐久性に劣ってい
た。これら材料については、母材を安価に製造するメリ
ットと耐久性の兼ね合いで経済性を考慮し適用を図るこ
とができる。When the above-mentioned cylinders (C-1 to 3), screws (S-1 to 3), and cylinder head (other -1) were appropriately combined and injection molding of Mg at a temperature of about 650 ° C. was carried out as a real machine test, Even in the combination of Nos. 1 and 2, no melting loss or wear was observed after long-term use, and excellent durability was exhibited. For comparison, the screw is made of ASTM A288 alloy and JIS SKD61 tool steel,
A similar actual machine test was performed on this screw with stellite lining, but almost no melting loss occurred, but the strength of the base material decreased due to temper softening during long-term use, and bending and deformation Therefore, it was inferior in durability. It is possible to apply these materials in consideration of economical efficiency by combining the merit of manufacturing the base material at low cost and the durability.
【００２１】[0021]
【発明の効果】以上説明したように本発明によれば、Ｍ
ｇなどの溶融金属の射出成形機用部材として要求される
耐溶損性、耐摩耗性、高温強度の全ての条件を満足する
ことができ、溶損による寿命低下や折損、破損などの損
傷を防ぐことができ、信頼性あるＭｇなどの射出成形機
を提供するることができる。As described above, according to the present invention, M
It is possible to satisfy all the conditions such as melting loss resistance, wear resistance, high temperature strength required for injection molding machine members of molten metal such as g, and prevent damage such as life shortening, breakage, damage due to melting loss. Therefore, it is possible to provide a reliable injection molding machine for Mg or the like.
【図１】 図１は本発明の一実施例を示すシリンダの断
面図である。FIG. 1 is a sectional view of a cylinder showing an embodiment of the present invention.
【図２】 図２は本発明の一実施例を示すスクリュの一
部断面図である。FIG. 2 is a partial cross-sectional view of a screw showing an embodiment of the present invention.
【図３】 図３は本発明の一実施例を示すスクリュの正
面図である。FIG. 3 is a front view of a screw showing an embodiment of the present invention.
【図４】 図４は本発明の一実施例を示すスクリュの正
面図である。FIG. 4 is a front view of a screw showing an embodiment of the present invention.
【図５】 図５は本発明の一実施例を示すシリンダヘッ
ドの断面図である。FIG. 5 is a sectional view of a cylinder head showing an embodiment of the present invention.
【図６】 図６は溶融Ｍｇによる各種材料の溶損量と温
度との関係を示すグラフである。FIG. 6 is a graph showing the relationship between the melting loss amount of various materials due to molten Mg and the temperature.
１ シリンダ母材 ２ ステライトライナー ３ スクリュ芯材 ４ ステライトライニング ５ スクリュ芯材 ６ ステライトライニング ８ ステライトライニング ９ 硬質クロムメッキ １０ シリンダヘッド母材 １１ ステライトライニング １２ Ｆｅ基合金ライニング 1 Cylinder Base Material 2 Stellite Liner 3 Screw Core Material 4 Stellite Lining 5 Screw Core Material 6 Stellite Lining 8 Stellite Lining 9 Hard Chrome Plating 10 Cylinder Head Base Material 11 Stellite Lining 12 Fe-based Alloy Lining
Claims (3)
Ｆｅ基の耐熱性材料で構成するとともに、該基材の射出
用溶融金属との接触部表面に、Ｃｏ基耐熱性材料を被覆
したことを特徴とする射出成形機用部材1. A base material of a member for an injection molding machine is made of a Ni-base or Fe-base heat-resistant material, and a surface of a contact portion of the base material with a molten metal for injection is coated with a Co-base heat-resistant material. Member for injection molding machine characterized by
はＦｅ基の耐熱性材料で構成するとともに、該芯材のス
クリュフライト山部表面にＣｏ基耐熱性材料をライニン
グし、芯材の谷部表面には、硬質金属皮膜を形成したこ
とを特徴とする射出成形機用スクリュ2. A screw core material for an injection molding machine is made of a Ni-base or Fe-base heat-resistant material, and a Co-base heat-resistant material is lined on the screw flight peak surface of the core material to form a valley of the core material. A screw for an injection molding machine, characterized in that a hard metal film is formed on the surface of the part.
はＦｅ基の耐熱性材料で構成するとともに、該芯材のス
クリュフライト山部表面にＣｏ基耐熱性材料をライニン
グし、さらに、芯材の谷部表面に、硬質金属皮膜を形成
した後、この硬質金属皮膜に対し、ヒュージングまたは
熱間静水圧加工による皮膜改善処理を行うことを特徴と
する射出成形機用スクリュの製造方法3. A screw core material for an injection molding machine is made of a Ni-base or Fe-base heat-resistant material, and a Co-base heat-resistant material is lined on the surface of a screw flight of the core material. A method for manufacturing a screw for an injection molding machine, which comprises forming a hard metal film on the surface of a valley portion of the steel and then performing a film improving treatment on the hard metal film by fusing or hot isostatic pressing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23450294A JP2862799B2 (en) | 1994-09-05 | 1994-09-05 | Injection molding machine components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23450294A JP2862799B2 (en) | 1994-09-05 | 1994-09-05 | Injection molding machine components |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10262594A Division JP3113234B2 (en) | 1998-09-17 | 1998-09-17 | Screw for injection molding machine and method of manufacturing the screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0872110A true JPH0872110A (en) | 1996-03-19 |
| JP2862799B2 JP2862799B2 (en) | 1999-03-03 |
Family
ID=16972038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23450294A Expired - Fee Related JP2862799B2 (en) | 1994-09-05 | 1994-09-05 | Injection molding machine components |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2862799B2 (en) |
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|---|---|---|---|---|
| US5983976A (en) * | 1998-03-31 | 1999-11-16 | Takata Corporation | Method and apparatus for manufacturing metallic parts by fine die casting |
| US6065526A (en) * | 1995-09-01 | 2000-05-23 | Takata Corporation | Method and apparatus for manufacturing light metal alloy |
| US6135196A (en) * | 1998-03-31 | 2000-10-24 | Takata Corporation | Method and apparatus for manufacturing metallic parts by injection molding from the semi-solid state |
| US6474399B2 (en) | 1998-03-31 | 2002-11-05 | Takata Corporation | Injection molding method and apparatus with reduced piston leakage |
| US6540006B2 (en) | 1998-03-31 | 2003-04-01 | Takata Corporation | Method and apparatus for manufacturing metallic parts by fine die casting |
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| US6945310B2 (en) | 2003-05-19 | 2005-09-20 | Takata Corporation | Method and apparatus for manufacturing metallic parts by die casting |
| US6951238B2 (en) | 2003-05-19 | 2005-10-04 | Takata Corporation | Vertical injection machine using gravity feed |
| EP2899297A4 (en) * | 2012-09-24 | 2016-07-13 | Japan Steel Works Ltd | COATING STRUCTURE MATERIAL |
| CN109530649A (en) * | 2017-09-22 | 2019-03-29 | 株式会社日本制钢所 | The screw rod of metal injection molded molding machine |
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-
1994
- 1994-09-05 JP JP23450294A patent/JP2862799B2/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6065526A (en) * | 1995-09-01 | 2000-05-23 | Takata Corporation | Method and apparatus for manufacturing light metal alloy |
| US6241001B1 (en) | 1995-09-01 | 2001-06-05 | Takata Corporation | Method and apparatus for manufacturing light metal alloy |
| US6942006B2 (en) | 1998-03-31 | 2005-09-13 | Takata Corporation | Injection molding method and apparatus with reduced piston leakage |
| US6135196A (en) * | 1998-03-31 | 2000-10-24 | Takata Corporation | Method and apparatus for manufacturing metallic parts by injection molding from the semi-solid state |
| US6276434B1 (en) | 1998-03-31 | 2001-08-21 | Takata Corporation | Method and apparatus for manufacturing metallic parts by ink injection molding from the semi-solid state |
| US6283197B1 (en) | 1998-03-31 | 2001-09-04 | Takata Corporation | Method and apparatus for manufacturing metallic parts by fine die casting |
| US6474399B2 (en) | 1998-03-31 | 2002-11-05 | Takata Corporation | Injection molding method and apparatus with reduced piston leakage |
| US6540006B2 (en) | 1998-03-31 | 2003-04-01 | Takata Corporation | Method and apparatus for manufacturing metallic parts by fine die casting |
| US5983976A (en) * | 1998-03-31 | 1999-11-16 | Takata Corporation | Method and apparatus for manufacturing metallic parts by fine die casting |
| US6880614B2 (en) | 2003-05-19 | 2005-04-19 | Takata Corporation | Vertical injection machine using three chambers |
| US6945310B2 (en) | 2003-05-19 | 2005-09-20 | Takata Corporation | Method and apparatus for manufacturing metallic parts by die casting |
| US6951238B2 (en) | 2003-05-19 | 2005-10-04 | Takata Corporation | Vertical injection machine using gravity feed |
| US7150308B2 (en) | 2003-05-19 | 2006-12-19 | Takata Corporation | Method and apparatus for manufacturing metallic parts by die casting |
| US7296611B2 (en) | 2003-05-19 | 2007-11-20 | Advanced Technologies, Inc. | Method and apparatus for manufacturing metallic parts by die casting |
| EP2899297A4 (en) * | 2012-09-24 | 2016-07-13 | Japan Steel Works Ltd | COATING STRUCTURE MATERIAL |
| CN109530649A (en) * | 2017-09-22 | 2019-03-29 | 株式会社日本制钢所 | The screw rod of metal injection molded molding machine |
| CN113102722A (en) * | 2021-04-06 | 2021-07-13 | 辽宁工程技术大学 | Injection chamber with novel fused coating |
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