Mechanical Engineering - Production Engineering - Discussion

Titanium produces non-homogenous chips. That's the reason option C is correct.

I think option B is correct.

Option B is correct. Reference - Kalpakijan and Schmidt.

Generally, titanium material having less thermal conductivity. Hence this material is difficult to cut.

Low modulus of elasticity tends it to move away from cutting tool easily. It makes it more springy and difficult to maintain proper contact with the tool.

Option given is one probable answer. And coming to reactivity, it satisfies both B and C.

What is the correct answer? Please tell me clearly.

Titanium alloys due to their high strength, low thermal conductivity and chemical re-activity with tool materials (at elevated temperatures), pose a hazard to the tool and significantly reduce the tool life.

In addition, a relatively low Young\'s modulus of titanium alloys leads to spring-back and chatter leading to poor surface quality of the finished product.

Finally, during turning and drilling, long continuous chips are produced; causing their entanglement with the cutting tool and making automated machining near impossible.

Titanium is very heavy in weight compare to other metal. And yes it is chemically reactive but challenging part is variation of chip thickness. Hence, I go with option C.

Yes I agree with both of you. You both are correct.

Titanium is highly chemically reactive and reacts with almost all tool materials. So its machining is generally done using water jet. That's why answer B is correct.