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Cutting tool materials are materials that are used to make cutting tools which are used in machining (drill bits, tool bits, milling cutters, etc.) but not other cutting tools like knives or punches. Cutting tool materials must be harder than the material of the workpiece, even at high temperatures during the process. The following properties are required for cutting tool * hardness, hot hardness and * bending strength and toughness * inner bonding strength * wear resistance * oxidation resistance * small propensity for diffusion and adhesion * abrasion resistance * edge strength

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  • مواد أدوات القطع (ar)
  • Schneidstoff (de)
  • Cutting tool material (en)
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  • مواد أدوات القطع هي مواد تستخدم بشكل مخصص من أجل صناعة أدوات القطع، والتي بدورها مستخدمة في آلات التشغيل الصناعية (مثل لقم المثقب وأقلام القطع ومقاطع التفريز). يتطلب توفر الخواص التالية في مواد أدوات القطع عدة ميزات، من ضمنها: الصلادة Flexural strength ومقاومة فعل الاهتراء والأكسدة. (ar)
  • Cutting tool materials are materials that are used to make cutting tools which are used in machining (drill bits, tool bits, milling cutters, etc.) but not other cutting tools like knives or punches. Cutting tool materials must be harder than the material of the workpiece, even at high temperatures during the process. The following properties are required for cutting tool * hardness, hot hardness and * bending strength and toughness * inner bonding strength * wear resistance * oxidation resistance * small propensity for diffusion and adhesion * abrasion resistance * edge strength (en)
  • Als Schneidstoffe werden diejenigen Werkstoffe bezeichnet, aus denen der Schneidteil eines Zerspanungswerkzeugs mit geometrisch bestimmter Schneide besteht. Dazu zählen insbesondere Drehmeißel, Bohrer, Fräswerkzeuge, Sägen und Räumwerkzeuge. Schneidstoffe beeinflussen die Wirtschaftlichkeit spanender Prozesse wesentlich. Die heute noch anhaltende Entwicklung der Schneidstoffe geht auf die Mitte des 19. Jahrhunderts zurück und brachte eine Fülle verschiedener Materialien hervor. So gibt es fast für jeden Bearbeitungsfall einen besonders geeigneten Schneidstoff. (de)
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  • مواد أدوات القطع هي مواد تستخدم بشكل مخصص من أجل صناعة أدوات القطع، والتي بدورها مستخدمة في آلات التشغيل الصناعية (مثل لقم المثقب وأقلام القطع ومقاطع التفريز). يتطلب توفر الخواص التالية في مواد أدوات القطع عدة ميزات، من ضمنها: الصلادة Flexural strength ومقاومة فعل الاهتراء والأكسدة. أثناء عملية تشغيل المعادن تتولد ضغوط كبيرة و حرارة عالية و يؤدي احتكاك الرايش بسطح أداة القطع إلي تآكل كل الأسطح العاملة فيتغير شكل الجزء القاطع و زاوياه و تصبح أداة القطع بعد فترة من الزمن غير صالحة للعمل حتي يتم شحذها.و كي تعمل أداة القطع لمدة أطول دون اللجوء إلي شحذها، يجب أن تتحمل بشكل جيد التآكل الناتج من جراء ارتفاع درجة الحرارة وأن تكون صلادتها أكبر من صلادة المعدن المعرض للتشغيل حتي تستطيع أن تتغلغل فيه في كل الظروف. (ar)
  • Cutting tool materials are materials that are used to make cutting tools which are used in machining (drill bits, tool bits, milling cutters, etc.) but not other cutting tools like knives or punches. Cutting tool materials must be harder than the material of the workpiece, even at high temperatures during the process. The following properties are required for cutting tool * hardness, hot hardness and * bending strength and toughness * inner bonding strength * wear resistance * oxidation resistance * small propensity for diffusion and adhesion * abrasion resistance * edge strength There is no material that shows all of these properties at the same time. Very hard materials, have lower toughness and break more easily. The following cutting tool materials are used: * Tool steels. They are relatively cheap and tough. Their hardness is sufficient to machine other steels. * Carbon tool steels. They lose their hardness at 200 °C * High speed steels. They lose their hardness at 600 °C, and are widely used in machining. Due to their ability to retain hardness at higher temperature, higher cutting speeds are possible. * cemented carbides. Harder than tool steels, but less tough. Can be used up to 900 °C. There are many sort of cemented carbides like ones made of tungsten carbide and cobalt or cermets. * . They are even harder than cemented carbides but have lower toughness. Aluminium oxide and silicon nitride are used. The latter has higher toughness, but can't be used for machining Steel, due to very high wear. * "super hard materials": * cubic boron nitride. It is nearly as hard as diamond. * diamond. The hardest known material, but can only be used up to 600 °C and can't be used to machine steel. (en)
  • Als Schneidstoffe werden diejenigen Werkstoffe bezeichnet, aus denen der Schneidteil eines Zerspanungswerkzeugs mit geometrisch bestimmter Schneide besteht. Dazu zählen insbesondere Drehmeißel, Bohrer, Fräswerkzeuge, Sägen und Räumwerkzeuge. Schneidstoffe beeinflussen die Wirtschaftlichkeit spanender Prozesse wesentlich. Die heute noch anhaltende Entwicklung der Schneidstoffe geht auf die Mitte des 19. Jahrhunderts zurück und brachte eine Fülle verschiedener Materialien hervor. So gibt es fast für jeden Bearbeitungsfall einen besonders geeigneten Schneidstoff. Der für den Spanabtrag verantwortliche Werkstoff an Zerspanwerkzeugen mit geometrisch unbestimmter Schneide (bspw. Schleifscheiben) wird Schleifmittel genannt. Schneidstoffe werden zu Gruppen zusammengefasst. Sortiert nach aufsteigender Härte, Verschleißfestigkeit, Preis und erreichbarer Schnittgeschwindigkeit sowie abnehmender Bruchfestigkeit, handelt es sich um: * Werkzeugstahl (insbesondere Schnellarbeitsstahl (HSS)) * Hartmetalle * Schneidkeramiken * Bornitrid * Diamant (de)
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