Mechanical Engineering - Production Engineering - Discussion

1. 

Segmental chips are formed during machining

[A]. mild steel
[B]. cast iron
[C]. high speed steel
[D]. high carbon steel

Answer: Option B

Explanation:

No answer description available for this question.

Chandu said: (Jan 20, 2013)  
The chip is produced in the form of small pieces. These types of chips are obtained while machining brittle material like cast iron.

Rabindu said: (Mar 5, 2013)  
Chips produce for hard and brittle material are known as discontinuous chips as cast iron is a hard and brittle material therefore chips are discontinuous.

Patel said: (Mar 17, 2013)  
What is meaning of Segmental chips ?

Anu said: (May 4, 2013)  
For the materials like cast iron and bronze, chips break up into small segments due to the property of having brittleness.

Prashant G said: (May 17, 2013)  
Since it is brittle material, so chips generated will not be continuous formation.

Vasu said: (Jul 29, 2013)  
Segmental chips are formed continuously.

Biswajit Ghosh said: (Aug 25, 2013)  
Cast iron is brittle material. For this reason it breaks quickly.

Rahul said: (Aug 29, 2013)  
Ferrous material critical structure properties Crystal structure not machine smooth at high speed machining for cast iron so during machine process chip form continuous Segment.

Mrutyunjay Mohanty said: (Sep 28, 2013)  
As cast iron is a brittle material the plastic deformation takes place quickly so it breaks.

S.Vikas said: (Nov 7, 2013)  
Segmental chips are the discontinuous chips. During machining of hard materials like cast iron, the chip formed doesn't have the energy (machining forces) absorbing capacity. So they immediately transfer the energy in the form of crack to the end of the chip thickness resulting in small/discontinuous/segmental chips.

G.S.Raj said: (Dec 12, 2013)  
Segmental chips are the discontinuous chips. Discontinuous chips are formed when we machining harder materials.

Sanjay said: (Dec 28, 2013)  
Segmental chips are the discontinuous chips. During machining process of brittle materials like cast iron get plastic deformation and results as a segmental chips.

Ajay said: (Jan 5, 2014)  
Cast iron is brittle material therefore during machining it produced discontinuous chips.

Bright said: (Jan 17, 2014)  
Segmental chips are discontinuous chips.

Kareem said: (Feb 11, 2014)  
During machining of hard and brittle work pieces the chip formation is discontinuous. And by using small rake angle, low speed machining.

Large uncut chip thickness we find discontinuous chips.

S N Adhikari said: (Mar 15, 2014)  
As cast iron is a brittle material, so segmental or discontinuous chips are produced.

Syed said: (Jul 23, 2014)  
Segmental chip are formed while machining Brittle material.

Explanation:

Brittle materials has high hardness and Fine Grain structure as compared to Ductile or Coarse Grain structure material.

Thus, Of above properties and grain structure size chips breaks up rapidly in the form of segmental or Dis-continuous chips.

Best example is CAST IRON (CI).

Sukhdeep Singh said: (Jul 24, 2014)  
During the machining of Cast Iron continuous chips are produced with built up edges.

Babai said: (Aug 22, 2014)  
Due to machining hard material, which have fine grain structure, it can not stored energy, and for hardness and brittleness, the segmental or discontinuous chips will be produce, and all of these properties are present in cast iron.

Manish Raygade said: (Aug 29, 2014)  
Segmental chip are formed while machining process from brittle material cast iron and bronze.

Hariprasad said: (Sep 2, 2014)  
Brittle materials like cast iron gives no continuous chips because cast iron contain carbon as flakes of graphite.

Sanjoy said: (Sep 8, 2014)  
Cast iron is a brittle materials so it is machining process smalls piece material produce or discontinuous chips form.

Sahid said: (Sep 12, 2014)  
Segmental chips are produced with brittle materials like cast iron but continuous chip can be produced with brittle material if the cutting speed is high.

Raj said: (Dec 9, 2014)  
Segment chip are formed during machining of hard and brittle like cast iron.

Suraj said: (Dec 14, 2014)  
Segmental means discontinuous either of regular shape or irregular shape. If irregular shape then sure brittle material. If regular shape-then ductile material on multipoint cutter.

Rome.Johnson said: (Dec 17, 2014)  
What about high speed steel and high speed carbon? They are not hard and brittle.

Pravinkumar K said: (Mar 2, 2015)  
Material which is having lower thermal conductivity in nature will produce segmented chips.

Ex: Cast iron, Wood.

Priya said: (Mar 24, 2015)  
What means Segmental?

Amit Kumar said: (Jun 25, 2015)  
Discontinuous chips are also known as segmented chips. It happens in the case of brittle material like cast iron etc.

Dharmendra K. Nivariya said: (Jul 2, 2015)  
Cast iron is a brittle material so segmental chips are formed during machining.

Alene said: (Aug 13, 2015)  
Brittle material machining chip is called segmental chip. So cast iron brittle material.

Maggiee said: (Sep 22, 2015)  
For Brittle material segmented chips are formed during machining.

Eg. Cast iron.

Ashu J said: (Sep 30, 2015)  
Segmented chips are nothing but discontinuous chips which are formed by the brittle material during machining, among the options the most favoured option is cast iron which is brittle material.

Bikash said: (Oct 5, 2015)  
Due to highest amount of carbon content the structure becomes brittle so cast iron gives discontinuous or segment chips.

Deepak said: (Oct 20, 2015)  
During machining, the brittle materials lack its density which is necessary for plastic chip formation. But, it should be less. This will result in formation of discontinuous chip or segmental chip.

Jay Kumar Dwivedi said: (Oct 22, 2015)  
Segmental chip are formed due to property of cast iron because cast iron content carbon 2.1% to 6.667% so high percentage of carbon its hardness or brittleness increases and segmental chip formed.

Babar said: (Apr 27, 2016)  
Segments mean smaller pieces. As in ductile material this condition is obtained only at very high speeds (because due to more heat the chips get attracted to the tool). Hence, the correct answer is cast iron.

Garima said: (Jul 5, 2016)  
Segmented chips are semi-continuous chips with zones of flow and high shear strain and metal with low thermal conductivity and strength that decreases sharply with temperature.

Eg. Titanium Chips have a sawtooth-like appearance.

Divya said: (Jul 12, 2016)  
Segmental chips mean chips become broken pieces before it departs from the cutter. It is often happened in high brittle materials, such as cast iron or bronze.

Because the chip forms then are broken off promptly, which won't have pressure on the tool surface, the remainder of the irregular surface, it's easy to be cut, so it can get a more flat surface.

And lower the pressure of the tool surface, less wear happened, so the tool life is longer. Such as discontinuous chip caused by higher friction coefficient or higher soft ductile materials, it means poor cutting conditions.

Hemant said: (Oct 13, 2016)  
Can it be generalised that higher the carbon content, higher will be the tendency of the material to form segmental chips?

Hareesh said: (Jan 2, 2017)  
B is correct in 90° Cases but when machining with less cutting speeds continuous chips can be formed.

Ps Yadav said: (Jan 5, 2017)  
Segmental chips are semicontinuous chips.

Mild steel is correct answer when,

Feed is large.
Depth of cut large.
Cutting fluid present.

Prashant Chaudhari said: (Jan 8, 2017)  
Nice answer. Thank you all.

Anoop Kumar said: (Feb 1, 2017)  
Segmental chips are semi-continuous. These are formed in those materials which have low thermal conductivity like titanium, cast iron etc.

Harshal said: (Feb 8, 2017)  
Continuous chips form during machining ductile material. Cast iron contain large % of carbon than steels hence it is harder than steel.

Mohit Varshney said: (Jun 4, 2017)  
This type of chips are produced during machining of hard and brittle metals like bronze, brass and cast-iron. Sometimes, cutting of ductile metals at very low feeds with small rake angle of the cutting tool and high speeds and high friction forces at the chip tool interface also result in the production of discontinuous chips.

Raman And Yadav said: (Sep 8, 2017)  
We have to just remember that brittle material produces discontinuous chips?

The more the carbon content the more the material is brittle incase of steel.

Nikunj said: (Sep 12, 2017)  
In which material Segmental with buil-up chip is possible?

Amahi Amit said: (Nov 15, 2017)  
What about high carbon steel. Won't that produce discontinuous chip?

Kumar Lk said: (Jan 15, 2018)  
It can resist compressive loads, the chips are discontinuous or segmented because it is mixed graphite. So the chips are discontinuous.

Narendra said: (Mar 8, 2018)  
Anyone give details of high carbon steel.

Anand Babu K said: (Mar 12, 2018)  
Segmental chips is known as discontinuous chips. Therefore discontinuous chips are formed during the machining of brittle materials like cast iron.

Md Nadeem Khan said: (Mar 28, 2018)  
Brittle material is stronger in compression and weak in tension.

Kunjan Modi said: (Aug 25, 2018)  
From Fe3C diagram we know that in all types of steels the carbon is up to 2% and from 2% to 6. 6% carbon content is found in cast iron. So if the carbon % is more then the brittleness of the substance will be more and the more brittle material will have more tendency to generate segmental chips during machining.

Nithya Nith said: (Sep 28, 2018)  
Segmental means discontinuous, breked chips are formed during machining, cast iron is brittle material so it formed segmental chips.

Naveen said: (Oct 21, 2018)  
It is Due the presence of carbon.

Pandu said: (Jun 21, 2019)  
Cast iron is not a brittle material, it is a harder material.

Sarvesh Kumar said: (Jun 27, 2019)  
Cast iron is a brittle and hard material. So very small parts or segmental form of chips are crated during machining of cast iron.

Mohit Sharma said: (Sep 18, 2019)  
It is a form when machining of brittle material like cast iron, brass etc. With slow cutting speed. Chips cut into small segment during cutting. This is formed during slow cutting speed with a small rack angle.

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