Manufacturing Processes

Explain the following term:

(i) Fullering,

Describe with neat sketch, the various operations in casting process.What is the function of core in casting? Describe the elements of gating systems with neat sketch.

What is master pattern? Describe the various kinds of patterns are in use with neat sketch. What are the allowances provided, when making a pattern?

Define metal forming process and differentiate between hot working and cold working process. Write the minimum two examples of both processes.

(b) What are the methods of forging and compare forging with casting process?

What is the principle of gas welding? Explain with neat sketches the features and use of neutral, oxidizing and carburizing flames in case of oxy-acetylene gas welding.

Describe the various processes in sheet metal working and draw a neat sketch of die and punch assembly. 

Explain the following topic in brief and to the point:

(a) Classify the moulds used in casting. Describe the investment casting with neat sketch.

Explain the following topic in brief and to the point:

(b) Describe the operation of cupola furnace. 

Explain the following topic in brief and to the point:

(c) Differentiate between drop forging and press forging.

Explain the following topic in brief and to the point:

(d) What do you understand by press work? What is the working principle of press?

Explain the following topic in brief and to the point:

(e) Explain soldering process. How it differs from brazing? Write the uses of both.

Explain in brief:

f) Wire drawing & swaging

Explain the following term:

(ii) Upsetting,

Explain the following term:

(iii) Fitting and

Explain the following term:

(iv) Tapping.

Explain the following term:

(i) spinning,

Explain the following term:

(ii) bending,

Explain the following term:

(iii) embossing and

Explain the following term:

(iv) coining

Answer question:

a) Describe Properties of materials: strength, elasticity, stiffness, malleability and hardness.

b) Elaborate on composition and properties of moulding sand. 

a) What are permanent mould casting & Compare. centrifugal casting? 

b) What is Pattern? What are pattern materials? Explain all types of patterns in brief.

Explain Oxyacetylene Gas welding, its equipment and field of application?

Compare Brazing and soldering? How they are used in modern manufacturing process? 

a) Describe butt and percussion welding? Draw suitable diagram to elaborate. Also give its some applications. 

b) Discuss Flux, its composition, properties and function? Elaborate in brief. 

What is Powder metallurgy? Explain its all process: powder production blending, compaction, sintering. 

a) Explain types of sheet metal operations: shearing, drawing and bending. 

b)Compare embossing and coining with suitable diagram &  applications.

a) What are Carbon steels? How they are classified based on % of carbon? Describe their properties & applications.

Answer question:

b) Explain in brief all the elements of gating system. 

Answer question:

c) Compare Hot working and Cold working process.

Answer question:

d) Describe any five welding defects with proper nomenclature. 

 Answer question:

e) Compare TIG and MIG welding in detail. What are their applications?

Answer question:

f) Elaborate on any five fitting shop tools with proper diagrams.

Explain in brief:

a) Forging defects, Answer question

Explain in brief:

b) Drop forging

Explain in brief:

c) Press forging

Explain in brief:

d) Bench work and fitting operations 

Explain in brief:

e) Extrusion & its types