JP4346034B2 - Material evaluation test method and test apparatus for injection molding machine parts - Google Patents

Material evaluation test method and test apparatus for injection molding machine parts Download PDF

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JP4346034B2
JP4346034B2 JP2005146168A JP2005146168A JP4346034B2 JP 4346034 B2 JP4346034 B2 JP 4346034B2 JP 2005146168 A JP2005146168 A JP 2005146168A JP 2005146168 A JP2005146168 A JP 2005146168A JP 4346034 B2 JP4346034 B2 JP 4346034B2
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injection molding
molding machine
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metal crucible
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JP2006322808A (en
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正就 吉田
吉男 宮田
祐司 島谷
伸之 船平
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株式会社不二越
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本発明は、射出成形機の加熱シリンダ材料及びスクリュー材料を含む射出成形機部品用材料と、射出成形機の加熱シリンダ及びスクリューが射出する射出成形用エンジニアリングプラスチック及びMg合金又はAl合金を含む射出成形部材と、の適正を評価するにあたり行う、これら射出成形機部品用材料の射出成形時の腐食摩耗試験又は溶損摩耗試験方法及び試験装置に関する。   The present invention relates to an injection molding machine component material including a heating cylinder material and a screw material of an injection molding machine, an injection molding engineering plastic injected with a heating cylinder and a screw of the injection molding machine, and an injection molding including an Mg alloy or an Al alloy. The present invention relates to a corrosion wear test or erosion wear test method and test apparatus during injection molding of these materials for parts of an injection molding machine, which are performed when evaluating the appropriateness of the members.
射出成形機の射出成形部材としては、エンジニアリングプラスチック部材と、Mg合金やAl合金等の金属部材がある。従来これらの射出成形用のエンジニアリングプラスチックやMg合金やAl合金等の金属と、射出成形機のスクリュー材料やシリンダ材料との適正評価は、実際の射出成形機にて行われていた。特許文献1、2には、射出成形機の加熱シリンダ及びスクリューの金属材料の樹脂に対する耐摩耗性を試験評価する際に、金属材料テストピースにペレット状の固体樹脂を加圧ピストンで所定の圧力で押しつけた状態で所定の回転速度でテストピースを回転させて、耐摩耗性を試験評価するものが開示されている。
特開平8−219969号公報 特開平9−5224号公報
As injection molding members of an injection molding machine, there are engineering plastic members and metal members such as Mg alloys and Al alloys. Conventionally, the appropriate evaluation of these engineering plastics for injection molding, metals such as Mg alloys and Al alloys, and screw materials and cylinder materials of injection molding machines has been performed with actual injection molding machines. In Patent Documents 1 and 2, when test-evaluating the wear resistance of a metal material of a heating cylinder and screw of an injection molding machine to a resin, a pellet-shaped solid resin is applied to a metal material test piece with a pressure piston with a predetermined pressure. The test piece is rotated at a predetermined rotation speed in a state where the test piece is pressed and the wear resistance is tested and evaluated.
JP-A-8-219969 Japanese Patent Laid-Open No. 9-5224
しかしながら、特許文献1、2の耐摩耗性を試験評価は、常温で固体樹脂を加圧するものであり、実際の射出成形機の内部と同等環境、すなわち半溶融状態の射出成形部材の高温、高圧、摩擦及び腐食を含むすべての環境を再現して耐摩耗性を試験評価するものではない。近年、切削加工のために必要なコストを削減するため、射出成形による部品のネットシシェイプ化が進んでおり、このための射出成形機の需要は年々増加する傾向にある。そのため、様々な新たな要求特性に対応するため、毎年新しいエンジニアリングプラスチックが開発され、またより高強度な射出成形用金属としてMg合金やAl合金のチクソモールドの需要が伸びつつある。従来これらの射出成形用のエンジニアリングプラスチックやMg合金やAl合金等の金属と、射出成形機の加熱シリンダ材料やスクリュー材料との適正評価を、実際の射出成形機の内部と同等環境、すなわち半溶融状態の射出成形部材の高温、高圧、摩擦及び腐食を含むすべての環境を再現しながら、簡単にテストできる試験機はなく、実際の射出成形機を使わざるを得なかったため、耐久テストのために、射出成形機による生産を長期間にわたって止めたり、1回のテストで多量のエンジニアリングプラスチックやMg合金やAl合金等の金属を必要とするなどの課題があった。   However, the test and evaluation of the abrasion resistance of Patent Documents 1 and 2 pressurizes a solid resin at room temperature, and the environment equivalent to the inside of an actual injection molding machine, that is, the high temperature and high pressure of a semi-molten injection molded member It does not test and evaluate wear resistance by reproducing all environments including friction and corrosion. In recent years, in order to reduce the cost required for cutting, the net shape of parts by injection molding is progressing, and the demand for injection molding machines for this purpose tends to increase year by year. Therefore, new engineering plastics are developed every year in order to meet various new required characteristics, and demand for thixomolds of Mg alloy and Al alloy as a higher strength metal for injection molding is increasing. Conventionally, the appropriate evaluation of engineering plastics for injection molding, metals such as Mg alloys and Al alloys, and heating cylinder materials and screw materials for injection molding machines, is equivalent to the environment of actual injection molding machines, that is, semi-molten. For the durability test, there was no test machine that could easily be tested while reproducing all environments including high temperature, high pressure, friction and corrosion of the injection molded parts in the state, and there was no choice but to use an actual injection molding machine. There have been problems such as stopping production by injection molding machines over a long period of time and requiring a large amount of engineering plastics and metals such as Mg alloys and Al alloys in one test.
本発明の課題は、実際の射出成形機を使用することなく、射出成形機の加熱シリンダ材料及びスクリュー材料を含む射出成形機部品用材料と、射出成形機の加熱シリンダ及びスクリューが射出する射出成形用エンジニアリングプラスチック及びMg金属又はAl金属を含む射出成形部材との適性を評価するにあたり、実際の射出成形機の内部と同等環境、すなわち半溶融状態の射出成形部材の高温、高圧、摩擦及び腐食を含むすべての環境を再現しながら、射出成形時の腐食摩耗試験又は溶損摩耗試験方法及び試験装置を提供することにある。   An object of the present invention is to provide an injection molding machine part material including a heating cylinder material and a screw material of an injection molding machine, and an injection molding in which a heating cylinder and a screw of the injection molding machine are injected without using an actual injection molding machine. In evaluating the suitability of engineering plastics and injection molding parts containing Mg metal or Al metal, the high temperature, high pressure, friction and corrosion of the injection molding parts in the same environment as the actual injection molding machine, i.e. An object of the present invention is to provide a corrosion wear test or erosion wear test method and test apparatus at the time of injection molding while reproducing all the environments including the above.
本発明は、射出成形機の加熱シリンダ材料及びスクリュー材料を含む射出成形機部品用材料と、射出成形機の加熱シリンダ及びスクリューが射出する射出成形用エンジニアリングプラスチック及びMg合金又はAl合金を含む射出成形部材との適正を評価するにあたり、本体に固定した鉄を含む金属製るつぼと、前記金属製るつぼを加熱する加熱装置と、本体に固定した複数の柱に上下移動可能に支持された支持部材と、前記支持部材を上下移動させるよう前記複数の柱の上部に固定した油圧シリンダを含む駆動装置と、前記支持部材に設けた回転装置により回転可能に支持されかつ前記金属製るつぼ内周と密着嵌め合い可能なピストンと、を有し、前記射出成形機部品用材料からなる試験片を前記ピストン下端に固定し、前記金属製るつぼ内に前記射出成形部材を装填し、前記金属製るつぼ内の前記射出成形部材を前記加熱装置で射出成形時の温度まで半溶融状態に加熱した後、前記試験片を固定したピストンを前記金属製るつぼ内に嵌め合い挿入し、前記駆動装置により前記ピストンを半溶融状態の前記射出成形部材に対して加圧するとともに前記回転装置により前記ピストンを回転させて、射出成形機内部における前記半溶融状態の前記射出成形部材の高温、高圧、摩擦及び腐食を含む環境を再現し、所定時間経過後前記試験片を取り出し、腐食摩耗試験又は溶損摩耗試験を含む試験結果を得ることを特徴とする射出成形機部品用材料評価試験方法及び装置によって上記の本発明の課題を解決した。   The present invention relates to an injection molding machine component material including a heating cylinder material and a screw material of an injection molding machine, an injection molding engineering plastic injected with a heating cylinder and a screw of the injection molding machine, and an injection molding including an Mg alloy or an Al alloy. In evaluating the suitability of the member, a metal crucible containing iron fixed to the main body, a heating device for heating the metal crucible, and a support member supported by a plurality of columns fixed to the main body so as to be vertically movable A drive device including a hydraulic cylinder fixed to the upper part of the plurality of pillars so as to move the support member up and down, and rotatably supported by a rotation device provided on the support member and closely fitting with an inner periphery of the metal crucible A test piece made of the material for injection molding machine parts is fixed to the lower end of the piston, and the metal crucible The injection molded member is loaded, and the injection molded member in the metal crucible is heated in a semi-molten state to the temperature at the time of injection molding by the heating device, and then the piston on which the test piece is fixed is attached to the metal crucible. The piston is pressed against the injection molded member in a semi-molten state by the drive device and rotated by the rotating device, so that the piston in the semi-molten state in the injection molding machine is rotated. An injection molding machine characterized by reproducing an environment including high temperature, high pressure, friction and corrosion of an injection molded member, taking out the test piece after a predetermined time, and obtaining a test result including a corrosion wear test or a erosion wear test. The above-described problems of the present invention have been solved by a material evaluation test method and apparatus for parts.
本発明では、射出成形機部品用材料からなる試験片をピストン下端に固定し、金属製るつぼ内に射出成形部材を装填し、金属製るつぼ内の射出成形部材を加熱装置で射出成形時の温度まで半溶融状態に加熱した後、試験片を固定したピストンを金属製るつぼ内に嵌め合い挿入し、駆動装置によりピストンを半溶融状態の射出成形部材に対して加圧するとともに回転装置によりピストンを回転させて、射出成形機内部における半溶融状態の射出成形部材の高温、高圧、摩擦及び腐食を含む環境を再現し、所定時間経過後試験片を取り出し、腐食摩耗試験又は溶損摩耗試験を含む試験結果を得ることにより、実際の射出成形機を使用することなく、射出成形機の加熱シリンダ材料及びスクリュー材料を含む射出成形機部品用材料と、射出成形機の加熱シリンダ及びスクリューが射出する射出成形用エンジニアリングプラスチック及びMg金属又はAl金属を含む射出成形部材との適正を評価するにあたり、実際の射出成形機の内部と同等環境、すなわち半溶融状態の射出成形部材の高温、高圧、摩擦及び腐食を含むすべての環境を再現しながら、射出成形時の腐食摩耗試験又は溶損摩耗試験方法及び試験装置を提供するものとなった。   In the present invention, a test piece made of a material for injection molding machine parts is fixed to the lower end of the piston, an injection molded member is loaded into a metal crucible, and the temperature at the time of injection molding of the injection molded member in the metal crucible with a heating device. After heating to a semi-molten state, the piston with the test piece fixed is fitted and inserted into a metal crucible, and the piston is pressed against the injection-molded member in the semi-molten state by a driving device and the piston is rotated by a rotating device. To reproduce the environment including high temperature, high pressure, friction and corrosion of the semi-molten injection molded part inside the injection molding machine, take out the test piece after a predetermined time, and test including corrosion wear test or erosion wear test By obtaining the result, without using an actual injection molding machine, the injection molding machine parts material including the heating cylinder material and screw material of the injection molding machine, and the injection molding machine In evaluating the suitability of engineering plastics for injection molding injected by thermal cylinders and screws, and injection molding members containing Mg metal or Al metal, the same environment as the inside of an actual injection molding machine, that is, an injection molding member in a semi-molten state The present invention provides a corrosion wear test or melt wear test method and test apparatus during injection molding while reproducing all environments including high temperature, high pressure, friction and corrosion.
発明を実施するための最良の形態につき、図面を参照して説明する。図1は本発明の実施形態の射出成形時の腐食摩耗試験又は溶損摩耗試験装置の構成を示すブロック図、図2は図1の装置の試験時の状態を示す要部拡大図である。図1に示すように本発明の試験装置は、本体 1に台座 2を介して固定した鉄を含む金属製るつぼ 3と、金属製るつぼ 3を加熱する加熱装置 4と、本体 1に固定した複数の柱 5に上下移動可能に支持された支持部材 6と、支持部材 6を上下移動させるよう複数の柱 5の上部に支持台 7を介して固定した主軸加圧用油圧シリンダ 8である駆動装置 8と、支持部材 6に設けた主軸回転用油圧モータ 9である回転装置 9により回転可能に支持されかつ金属製るつぼ 3内周31と密着嵌め合い可能なピストン10と、を有する。13は支持部材延長部14に設けた軸受である。   The best mode for carrying out the invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a corrosion wear test or erosion wear test apparatus during injection molding according to an embodiment of the present invention, and FIG. 2 is an enlarged view of a main part showing a state during the test of the apparatus of FIG. As shown in FIG. 1, the test apparatus of the present invention includes a metal crucible 3 containing iron fixed to a main body 1 via a base 2, a heating device 4 for heating the metal crucible 3, and a plurality of fixed to the main body 1. A support member 6 supported by the column 5 so as to be movable up and down, and a driving device 8 which is a main shaft pressurizing hydraulic cylinder 8 fixed to the upper part of the plurality of columns 5 via a support base 7 so as to move the support member 6 up and down. And a piston 10 that is rotatably supported by a rotating device 9 that is a main shaft rotating hydraulic motor 9 provided on the support member 6 and that can be closely fitted to the inner periphery 31 of the metal crucible 3. Reference numeral 13 denotes a bearing provided in the support member extension 14.
図1の装置を使用して、射出成形機の加熱シリンダ材料及びスクリュー材料を含む射出成形機部品用材料と、射出成形機の加熱シリンダ及びスクリューが射出する射出成形用エンジニアリングプラスチック及びMg合金又はAl合金を含む射出成形部材との適正を評価するにあたり、射出成形時の腐食摩耗試験及び溶損摩耗試験を含む試験をおこなうときは、射出成形機部品用材料からなる試験片11をピストン10下端に固定し、金属製るつぼ 3内に射出成形部材12を装填し、金属製るつぼ 3内の射出成形部材12を加熱装置 4で射出成形時の温度まで半溶融状態に加熱した後、試験片11を固定したピストン10を金属製るつぼ 3内に嵌め合い挿入し、駆動装置である主軸加圧用油圧シリンダ 8によりピストン10を半溶融状態の射出成形部材12に対して加圧するとともに回転装置である主軸回転用油圧モータ 9によりピストン10を回転させて、射出成形機内部における半溶融状態の射出成形部材の高温、高圧、摩擦及び腐食を含む環境を再現し、所定時間経過後前記試験片11を取り出し、腐食摩耗試験又は溶損摩耗試験を含む試験結果を得るものである。   1. Using the apparatus of FIG. 1, injection molding machine parts material including heating cylinder material and screw material of injection molding machine, engineering plastic for injection molding and Mg alloy or Al injected by heating cylinder and screw of injection molding machine When evaluating the suitability with injection molded parts containing alloys, when performing tests including corrosion wear test and melt wear test during injection molding, place a test piece 11 made of injection molding machine parts material on the lower end of the piston 10. After fixing, the injection molding member 12 is loaded in the metal crucible 3, and the injection molding member 12 in the metal crucible 3 is heated to a semi-molten state by the heating device 4 to the temperature at the time of injection molding. The fixed piston 10 is fitted into the metal crucible 3 and inserted, and the piston 10 is pressed against the semi-molten injection molded member 12 by the spindle pressurizing hydraulic cylinder 8 which is a driving device. At the same time, the piston 10 is rotated by the main shaft rotating hydraulic motor 9 which is a rotating device to reproduce the environment including high temperature, high pressure, friction and corrosion of the semi-molten injection molded part inside the injection molding machine, and a predetermined time has passed. Thereafter, the test piece 11 is taken out and test results including a corrosion wear test or a melt wear test are obtained.
図1の装置を使用し、主軸加圧用油圧シリンダ 8の圧力:20 MPa、主軸回転用油圧モータ 9の回転数:100rpm、金属製るつぼ 3内の温度: 300°C、にそれぞれ設定し、射出成形機部品用材料からなる試験片11として、材料A、材料B及び材料Cの3種の試験片を製作し、射出成形部材として PPS樹脂を選定して腐食摩耗試験を行った。
結果を図3に腐食摩耗減量(%)と試験時間(hr)との関係として示す。試験時間が進むにつれて、各3種の試験片の腐食摩耗減量が増えているが、試験片の材料により腐食摩耗減量が異なっていることが分かる。この試験結果より、射出成形機により PPS樹脂製品を成形する場合の加熱シリンダ材料及びスクリュー材料としては、材料Aが適していると判断することができる。
Using the device shown in Fig. 1, set the pressure of the hydraulic cylinder for pressurizing the spindle 8 to 20 MPa, the rotational speed of the hydraulic motor 9 for rotating the spindle to 100 rpm, and the temperature in the metal crucible 3 to 300 ° C, respectively. Three types of test pieces, material A, material B, and material C, were manufactured as test pieces 11 made of molding machine parts materials, and PPS resin was selected as an injection-molded member to conduct a corrosion wear test.
The results are shown in FIG. 3 as the relationship between corrosion wear loss (%) and test time (hr). As the test time progresses, the corrosion wear loss of each of the three types of test pieces increases, but it can be seen that the corrosion wear loss varies depending on the material of the test piece. From this test result, it can be judged that the material A is suitable as the heating cylinder material and the screw material when the PPS resin product is molded by the injection molding machine.
以上述べた通り、本発明では、実際の射出成形機を使用することなく、射出成形機の加熱シリンダ材料及びスクリュー材料を含む射出成形機部品用材料と、射出成形機の加熱シリンダ及びスクリューが射出する射出成形用エンジニアリングプラスチック及びMg金属又はAl金属を含む射出成形部材との、適性を評価するにあたり、実際の射出成形機の内部と同等環境、すなわち半溶融状態の射出成形部材の高温、高圧、摩擦及び腐食を含むすべての環境を再現しながら、射出成形時の腐食摩耗又は溶損摩耗を含む状況を調査するための試験方法及び試験装置を提供するものとなった。
本発明の試験方法及び試験装置は、射出成形機における加熱シリンダ材料及びスクリュー材料の適性評価において、極めて優れた性能を発揮するものとなった。
As described above, in the present invention, the injection molding machine parts material including the heating cylinder material and screw material of the injection molding machine and the heating cylinder and screw of the injection molding machine are injected without using an actual injection molding machine. In evaluating the suitability of the engineering plastic for injection molding and the injection molding member containing Mg metal or Al metal, the environment equivalent to the inside of the actual injection molding machine, that is, the high temperature, high pressure of the injection molded member in a semi-molten state, The present invention provides a test method and a test apparatus for investigating a situation including corrosion wear or melt wear during injection molding while reproducing all environments including friction and corrosion.
The test method and test apparatus of the present invention exhibited extremely excellent performance in evaluating the suitability of heating cylinder materials and screw materials in an injection molding machine.
本発明の実施形態の射出成形時の腐食摩耗試験又は溶損摩耗試験装置の構成を示すブロック図である。It is a block diagram which shows the structure of the corrosion wear test or the erosion wear test apparatus at the time of injection molding of embodiment of this invention. 図1の装置の試験時の状態を示す要部拡大図である。It is a principal part enlarged view which shows the state at the time of the test of the apparatus of FIG. 本発明の実施例1の腐食摩耗試験結果を示すグラフである。It is a graph which shows the corrosion wear test result of Example 1 of this invention.
符号の説明Explanation of symbols
3:金属製るつぼ 4:加熱装置 8:主軸加圧用油圧シリンダ(駆動装置)
9:主軸回転用油圧モータ(回転装置)10: ピストン 11: 試験片 12:射出成形部材
3: Metal crucible 4: Heating device 8: Hydraulic cylinder for pressurizing spindle (drive device)
9: Hydraulic motor for rotating the spindle (rotating device) 10: Piston 11: Test piece 12: Injection molding member

Claims (2)

  1. 射出成形機の加熱シリンダ材料及びスクリュー材料を含む射出成形機部品用材料と、射出成形機の加熱シリンダ及びスクリューが射出する射出成形用エンジニアリングプラスチック及びMg合金又はAl合金を含む射出成形部材との適正を評価するにあたり、本体に固定した鉄を含む金属製るつぼと、前記金属製るつぼを加熱する加熱装置と、本体に固定した複数の柱に上下移動可能に支持された支持部材と、前記支持部材を上下移動させるよう前記複数の柱の上部に固定した油圧シリンダを含む駆動装置と、前記支持部材に設けた回転装置により回転可能に支持されかつ前記金属製るつぼ内周と密着嵌め合い可能なピストンと、を有し、前記射出成形機部品用材料からなる試験片を前記ピストン下端に固定し、前記金属製るつぼ内に前記射出成形部材を装填し、前記金属製るつぼ内の前記射出成形部材を前記加熱装置で射出成形時の温度まで半溶融状態に加熱した後、前記試験片を固定したピストンを前記金属製るつぼ内に嵌め合い挿入し、前記駆動装置により前記ピストンを半溶融状態の前記射出成形部材に対して加圧するとともに前記回転装置により前記ピストンを回転させて、射出成形機内部における前記半溶融状態の前記射出成形部材の高温、高圧、摩擦及び腐食を含む環境を再現し、所定時間経過後前記試験片を取り出し、腐食摩耗試験又は溶損摩耗試験を含む試験結果を得ることを特徴とする射出成形機部品用材料評価試験方法。   Appropriateness of injection molding machine parts material including heating cylinder material and screw material of injection molding machine, and injection molding engineering plastic and injection molding member including Mg alloy or Al alloy injected by heating cylinder and screw of injection molding machine A metal crucible containing iron fixed to the main body, a heating device for heating the metal crucible, a support member supported by a plurality of columns fixed to the main body so as to be vertically movable, and the support member A driving device including a hydraulic cylinder fixed to the upper part of the plurality of pillars so as to vertically move, and a piston that is rotatably supported by a rotating device provided on the support member and can be closely fitted to the inner periphery of the metal crucible A test piece made of the material for injection molding machine parts is fixed to the lower end of the piston, and the shot is placed in the metal crucible. A molded member is loaded, and the injection molded member in the metal crucible is heated in a semi-molten state to the temperature at the time of injection molding by the heating device, and then a piston to which the test piece is fixed is fitted into the metal crucible. The injection device presses the piston against the injection molded member in a semi-molten state by the driving device and rotates the piston by the rotating device, so that the injection molded member in the semi-molten state inside the injection molding machine A material for an injection molding machine part, which reproduces an environment including high temperature, high pressure, friction and corrosion, and takes out the test piece after a predetermined time and obtains a test result including a corrosion wear test or a erosion wear test. Evaluation test method.
  2. 射出成形機の加熱シリンダ材料及びスクリュー材料を含む射出成形機部品用材料と、射出成形機の加熱シリンダ及びスクリューが射出する射出成形用エンジニアリングプラスチック及びMg合金又はAl合金を含む射出成形部材との適正を評価するにあたり、本体に固定した鉄を含む金属製るつぼと、前記金属製るつぼを加熱する加熱装置と、本体に固定した複数の柱に上下移動可能に支持された支持部材と、前記支持部材を上下移動させるよう前記複数の柱の上部に固定した油圧シリンダを含む駆動装置と、前記支持部材に設けた回転装置により回転可能に支持されかつ前記金属製るつぼ内周と密着嵌め合い可能なピストンと、を有し、前記射出成形機部品用材料からなる試験片を前記ピストン下端に固定し、前記金属製るつぼ内に前記射出成形部材を装填し、前記金属製るつぼ内の前記射出成形部材を前記加熱装置で射出成形時の温度まで半溶融状態に加熱した後、前記試験片を固定したピストンを前記金属製るつぼ内に嵌め合い挿入し、前記駆動装置により前記ピストンを半溶融状態の前記射出成形部材に対して加圧するとともに前記回転装置により前記ピストンを回転させて、射出成形機内部における前記半溶融状態の前記射出成形部材の高温、高圧、摩擦及び腐食を含む環境を再現し、所定時間経過後前記試験片を取り出し、腐食摩耗試験又は溶損摩耗試験を含む試験結果を得るようにしたことを特徴とする射出成形機部品用材料評価試験装置。   Appropriateness of injection molding machine parts material including heating cylinder material and screw material of injection molding machine, and injection molding engineering plastic and injection molding member including Mg alloy or Al alloy injected by heating cylinder and screw of injection molding machine A metal crucible containing iron fixed to the main body, a heating device for heating the metal crucible, a support member supported by a plurality of columns fixed to the main body so as to be vertically movable, and the support member A driving device including a hydraulic cylinder fixed to the upper part of the plurality of pillars so as to vertically move, and a piston that is rotatably supported by a rotating device provided on the support member and can be closely fitted to the inner periphery of the metal crucible A test piece made of the material for injection molding machine parts is fixed to the lower end of the piston, and the shot is placed in the metal crucible. A molded member is loaded, and the injection molded member in the metal crucible is heated in a semi-molten state to the temperature at the time of injection molding by the heating device, and then a piston to which the test piece is fixed is fitted into the metal crucible. The injection device presses the piston against the injection molded member in a semi-molten state by the driving device and rotates the piston by the rotating device, so that the injection molded member in the semi-molten state inside the injection molding machine An injection molding machine which reproduces the environment including high temperature, high pressure, friction and corrosion of the steel, and takes out the test piece after a predetermined time and obtains a test result including a corrosion wear test or a erosion wear test. Material evaluation test equipment for parts.
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