Which of the following interactions is expected to produce chip during a grinding process?

This question was previously asked in
RRB JE CBT 2 (Mechanical Engineering) ReExam Official Paper (Held On: 04 Jun, 2025)
View all RRB JE Papers >
  1. Chip-bond
  2. Bond-workpiece 
  3. Chip-workpiece
  4. Grit-workpiece

Answer (Detailed Solution Below)

Option 4 : Grit-workpiece
Free
General Science for All Railway Exams Mock Test
2.2 Lakh Users
20 Questions 20 Marks 15 Mins

Detailed Solution

Download Solution PDF

Explanation:

Grinding Process:

  • Grinding is a machining process that uses an abrasive wheel as the cutting tool to remove material from a workpiece surface. The abrasive grains on the grinding wheel's surface act as cutting edges, interacting with the workpiece to produce chips. This process is widely used in manufacturing for precision machining, finishing surfaces, and achieving tight tolerances. The interaction that primarily produces chips during grinding involves the abrasive grit and the workpiece material.

Grit-workpiece

  • The interaction between the grit and the workpiece is responsible for the removal of material in the form of chips during the grinding process. The abrasive grits embedded in the grinding wheel's surface serve as cutting tools. When the grinding wheel rotates and comes into contact with the workpiece, the abrasive grits cut into the material, shearing off tiny chips. This cutting mechanism is similar to conventional machining processes, where a cutting tool removes material to shape the workpiece. The following steps outline how this interaction produces chips:
    • Contact between Grit and Workpiece: As the grinding wheel rotates, individual abrasive grits come into contact with the workpiece surface. The pressure exerted by the wheel forces the grits into the material.
    • Material Penetration: The sharp edges of the abrasive grits penetrate the workpiece surface, removing material in the form of chips. The depth of penetration depends on factors such as grit size, wheel speed, feed rate, and the material properties of the workpiece.
    • Chip Formation: The material undergoes plastic deformation and shearing due to the high-pressure and high-speed interaction between the grit and the workpiece. This results in the formation of small chips, which are carried away by the grinding wheel or coolant.
    • Surface Finish: The continuous engagement of abrasive grits with the workpiece surface generates a smooth and precise finish. The size and distribution of the grits significantly influence the surface quality and material removal rate.
Latest RRB JE Updates

Last updated on Jul 2, 2025

-> The RRB JE CBT 2 Result 2025 has been released for 9 RRBs Zones (Ahmedabad, Bengaluru, Jammu-Srinagar, Kolkata, Malda, Mumbai, Ranchi, Secunderabad, and Thiruvananthapuram).

-> RRB JE CBT 2 Scorecard 2025 has been released along with cut off Marks.

-> RRB JE CBT 2 answer key 2025 for June 4 exam has been released at the official website.

-> Check Your Marks via RRB JE CBT 2 Rank Calculator 2025

-> RRB JE CBT 2 admit card 2025 has been released. 

-> RRB JE CBT 2 city intimation slip 2025 for June 4 exam has been released at the official website.

-> RRB JE CBT 2 Cancelled Shift Exam 2025 will be conducted on June 4, 2025 in offline mode. 

-> RRB JE CBT 2 Exam Analysis 2025 is Out, Candidates analysis their exam according to Shift 1 and 2 Questions and Answers.

-> The RRB JE Notification 2024 was released for 7951 vacancies for various posts of Junior Engineer, Depot Material Superintendent, Chemical & Metallurgical Assistant, Chemical Supervisor (Research) and Metallurgical Supervisor (Research). 

-> The selection process includes CBT 1, CBT 2, and Document Verification & Medical Test.

-> The candidates who will be selected will get an approximate salary range between Rs. 13,500 to Rs. 38,425.

-> Attempt RRB JE Free Current Affairs Mock Test here

-> Enhance your preparation with the RRB JE Previous Year Papers

Get Free Access Now
Hot Links: teen patti mastar teen patti master purana teen patti club apk teen patti real