# CTE Resource Center - Verso - Precision Machining Technology I Task 2130873499

CTE Resource Center - Verso

Virginia’s CTE Resource Center

Calculate speeds and feeds.

Definition

Calculation should include

  • applying material properties theory (e.g., predicting speeds and feeds and tooling requirements based on known properties of a material, responding to cutting conditions imposed by material properties)
  • identifying common materials and their principal properties relevant to machining tasks
  • recognizing differences among ferrous and nonferrous, magnetic, and ductile materials
  • explaining the changes to materials caused by heat-treating
  • predicting the machinability of a part, based on its appearance, its call-out value on the blueprint, and its supplied hardness value.

Process/Skill Questions

  • What is the difference between ferrous and nonferrous materials?
  • What happens to steel when it is heat-treated?
  • How do materials affect speeds and feeds?
  • What is the difference between ductile and brittle materials?

Related Standards of Learning

Science

PH.4

The student will investigate and understand how applications of physics affect the world. Key concepts include
  1. examples from the real world; and
  2. exploration of the roles and contributions of science and technology.