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