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Tool Materials and Carbide Inserts

Tool Materials and Carbide Inserts. Tool materials. - high carbon steels - high speed steel - carbide - ceramic - diamond. High carbon tool steels. used for hand tools such as files and chisels sometimes for drilling and turning etc. High speed steels.

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Tool Materials and Carbide Inserts

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  1. Tool Materials and Carbide Inserts

  2. Tool materials - high carbon steels - high speed steel - carbide - ceramic - diamond

  3. High carbon tool steels • used for hand tools such as files and chisels • sometimes for drilling and turning etc.

  4. High speed steels • may be used at higher speeds (100 sfpm - in mild steel)

  5. Cemented carbides • products of the powder metallurgy process • small particles of tungsten and carbon powders mixed together with a metal of lower melting point (usually cobalt)

  6. Cemented carbides (Cont.) • mixture is compressed • heated to around 2600 deg F. to complete the sintering process where the cobalt melts and forms a binder or matrix around the tungsten and carbon particles

  7. Carbide tools • most widely used tool materials in the machining industry • insert is normally brazed or clamped to the tool holder • or the entire tool is made of carbide (small mill cutters)

  8. Tool setup • cutting tool should be exactly on center • use heaviest depth of cut possible • never stop the machine while feed is engaged

  9. Insert uses

  10. Insert wear and damage

  11. Identification and selection of indexible inserts and tool holders

  12. ANSI Standard identification system • Indexible Inserts

  13. Insert Shape (Position 1)

  14. Clearance Angle (Position 2)

  15. Dimensional Tolerances (Position 3) • inscribed circle • thickness

  16. Chip Breaker and Type (Position 4)

  17. Inscribed Circle Size (Position 5)

  18. Insert Thickness (Position 6)

  19. Tool Nose Radius (Position 7)

  20. ANSI Standard identification system • Tool Holders (Lathe)

  21. Clamping Method (Position 1)

  22. Insert Shape (Position 2)

  23. Holder Style (Position 3)

  24. holder styles

  25. holder styles • continued

  26. Rake Angle (Position 4)

  27. Hand of Tool (Position 5) • Right, Neutral (Straight), Left

  28. Shank Size (Positions 6 & 7) • in 16ths of an inch

  29. Insert I.C. Size (Position 8) • in 1/8ths of an inch

  30. Qualified Condition (Position 9)

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