Project ForgeManufacturing Engineering
Machining Processes
GATE 2016
Medium
In an ultrasonic machining (USM) process, the material removal rate (MRR) is plotted as a function of the feed force of the USM tool. With increasing feed force, the MRR exhibits the following behavior:
- Aincreases linearly
- Bdecreases linearly
- Cdoes not change
- first increases and then decreases
Explanation
In USM, MRR rises with feed force up to an optimum value (as the tool-work gap narrows to the ideal abrasive-grain size), then falls beyond that point because excessive force chokes the abrasive slurry flow into the cutting zone.
Source: GATE ME 2016 Set-2 (2016)
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