Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
90 views
in General by (239k points)
closed by
______ process induces compressive residual stresses on a component to nullify the residual stresses within a steel structure.
1. Welding
2. Heat treatment
3. Brazing
4. Shot peening

1 Answer

0 votes
by (237k points)
selected by
 
Best answer
Correct Answer - Option 4 : Shot peening

Explanation:

Shot peening

  • It is a cold work process used to finish metal parts to prevent fatigue and stress corrosion failures and prolong product life for the part.
  • In shot peening, a small spherical shot bombards the surface of the part to be finished.
  • The shot acts like a peen hammer, dimpling the surface and causing compression stresses under the dimple and nullify the residual stress with in the component.
  • The surface compression stress strengthens the metal, ensuring that the finished part will resist fatigue failures, corrosion fatigue and cracking, and galling and erosion from cavitation.

​Heat treatment:

  • The properties of metal depend upon its composition and its structure; These properties can be changed to a considerable extent, by changing either its composition or its structure
  • The structure of a metal can be changed by heating it to a particular temperature, and, then, allowing it to cool at a definite rate
  • The process of changing the structure and thus changing the properties of metal, by heating and cooling, is called heat treatment of the metal
  • So heat treatment helps in improving the strength of the meta

Welding:

It is a metal joining process in which two or more parts are joined or coalesced at their contacting surfaces by suitable application of heat or/and pressure.

Welding processes can be broadly classified into

i. Fusion welding

ii. Pressure welding/solid-state welding

In fusion-welding processes, heat is applied to melt the base metals. In many fusion welding processes, a filler metal is added to the molten pool during welding to facilitate the process and provide strength to the welded joint.

  • Types: Arc welding, Gas welding, Oxyfuel gas welding, electron beam welding, laser welding, Carbon arc welding

 

In solid-state welding, joining of materials is performed with the help of heat and pressure or pressure alone.

  • Types: Forge welding, Resistance welding processes (spot, seam, projection, flash butt, arc stud welding), Ultrasonic welding, Explosive welding

Brazing:

In brazing two metal items are joined together using a filler metal that flows to the joint by capillary action. The melting point of filler metal is lower than that of adjoining metal

Brazing uses higher temperatures than soldering for a process and involves the parts to be closely fitted.

In welding, the workpieces are also melted but in brazing, they are not.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...