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    • Successful manufacturing requires mastery of a critical body of knowledge that includes essential concepts in applied mathematics, measurement and inspection, safety, and quality/lean.

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    • Machining best practices are specific to either the task or the device. For grinding, metal-cutting, or work holding, many tools can be used to complete the task.

    • Every workplace requires an understanding of the essential safety practices and topics that help employees to avoid potential hazards.

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1040 – 06 – Consider the Work Hardening Effect

Steel’s hardness and strength is usually the result of two things: carbon content inside of the material and work hardening. The more carbon in the steel, the harder steel will be. It is important to note, though, that many steels with low level of carbon can be hardened through cold working. When metal is shaped and deformed by cold working, its surface begins to harden.

Steel that has been case-hardened is usually much easier to machine. The metal itself forms a hard exterior surface with a softer material underneath. If the material is used in a cutting operation with a higher feed rate, the cutting tool will slice through this hardened exterior and remove the much softer interior metal. This makes it easier to remove material and improve its machinability.

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    Name two methods of strengthening steel.

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Class: 1040 - Elements of the Cutting Process - 12 Lessons
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