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12. in machining, straight chips broken off the workpiece at an angle indicate what about the material properties?

Sagot :

Straight chips that are split off the workpiece during machining at an angle signify greater cutting pressures and result in shorter, broader chips. increased lead angles (30 to 45 degrees)

Smaller lead angles, like 90 degrees, abruptly approach the workpiece, demand more effort while cutting, and result in shorter, broader chips. In contrast, larger lead angles (30 to 45 degrees) provide softer, smoother chips, less chip curl, and lower cutting forces.

The chip creation process indicates that under various cutting pressures, angles, and temperatures, a fresh metal interface is continuously generated between the tool material and the workpiece. When a cutting edge cuts metal effectively, it pushes part of the workpiece material off after deforming it somewhat plastically. Chips can split in one of three ways: they can shatter on their own, against a tool, or against a workpiece.

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