Casting Process : Pattern And Core Making

A pattern is a model or the replica of the object to be casted.It is embedded in molding sand and suitable ramming of molding sand around the pattern is made. The pattern is then withdrawn for generating cavity.

Pattern can be said as a model or the replica of the object to be cast.

A pattern prepares a mold cavity for the purpose of making a casting. It may also possess projections known as core prints for producing extra recess in the mould for placement of core to produce hollowness in casting. It may help in establishing seat for placement of core at locating points on the mould in form of extra recess. It establishes the parting line and parting surfaces in the mold. It may help to position a core in case a part of mold cavity is made with cores, before the molding sand is rammed. It should have finished and smooth surfaces for reducing casting defects. Runner, gates and risers used for introducing and feeding molten metal to the mold cavity may sometimes form the parts of the pattern. The first step in casting is pattern making. The pattern is a made of suitable material and is used for making cavity called mould in molding sand or other suitable mould materials. When this mould is filled with molten metal and it is allowed to solidify, it forms a reproduction of the, pattern which is known as casting.

Mechanical Project: Free GTU Mechanical Project List

MACHINE TOOL/PRODUCTION/FABRICATION

1. Fabrication of Waste chill recovery heat exchanger
2. Fabrication of Three axis hydraulic modern trailer
3. Automatic boring mechanism for foundries
4. Fabrication of friction Welding Machine
5. Fabrication of Remote operated weapon system
6. Fabrication of shot blasting machine
7. Electronic assisted hydraulic braking system
8. Fabrication of double drum wet grinder
9. Fabrication of mantles defense
10. Fabrication of sewage water treatment plant
11. Automatic pneumatic vice and jack
12. Fabrication of bucket wheel escalator
13. D & F of Automatic Embossing Drilling Machine
14. Fabrication of water cooler cum air conditioner
15. Remote controlled motorized zip crane
16. Fabrication of transformer heat reduction system
17. Fabrication of furnace using infrared Lamp
18. Fabrication of Soar Air conditioner
19. Fabrication of Automatic multi point grease gun
20. Fabrication of Turbo Super Charger for two wheeler
21. Fabrication of Double axis Pneumatic JCB
22. Compressed air production using Vehicle Suspensor
23. Solar Powered Auto charging grinding machine
24. Remote controlled tilting wheel chair for physically disable
25. Fabrication of Abrasive Jet Machine
26. Fully automated chapathi making machine
27. Fabrication of Coin Separator Machine
28. Fabrication of magneto-bearing system
29. Automatic rotating table with sequence operating machine
30. Automatic Double Axis Welding Machine

Engineering Thermodynamics By pk nag

Book Detail:

Publisher: McGraw Hill Education (India) Private Limited

ISBN-10 : 1259062562

ISBN-13 : 9781259062568

Number of Pages : 944 Pages

Language : English

Used By : Mechanical Engineering

P. K. Nag’s Engineering Thermodynamics 5th Edition is a comprehensive book for engineering students. The book comprises of property tables, charts, multiple choice questions and miscellaneous solved problems for the students. In addition, there are multiple chapters that help in making a clear understanding of thermodynamics, thermal energy and heat engines. This book is essential mechanical engineering students.

Important Book List For GATE Mechanical

Following are various reference book list for GATE Mechanical. 

ENGINEERING Thermodynamics     


P.K. Nag
Cengel and Boles

I.C. Engine

R.P. Sharma

M. L. Mathur

 R. P. Sharma

Gas Turbine and Propulsive Systems

PR Khajuria & SP Dubey

V ganesan

Fluid Mechanics

D.S. Kumar 

k.l.kumar

Cengel & cimbala

Frank m. white

Theory Of Machine By R.S. Khurmi

Book Detail:

Publisher: S. CHAND & COMPANY LTD-NEW DELHI

ISBN-10 : 812192524X

ISBN-13 :978-8121925242

Number of Pages : 1071 Pages

Language : English

Used By : Mechanical Engineering

Content Of Book:

1. Introduction

2. Kinematics Of Machine

3. Kinematic Of Motion 

4. Simple Harmonic Motion

5. Simple Mechanism 

6. Velocity In Mechanism (Instantaneous centre Method)

7. Velocity In Mechanism (Relative Velocity Method)

8. Acceleration In Mechanism  

9. Mechanism With Lower Pair

10. Friction

11. Belt, Rope And Chain Drive

12. Toothed Gear

13. Gear Train

14. Gyroscopic Couple and precessional Motion 

15. Inertia Force In Reciprocating Part

16. Turning Moment Diagram and Flywheel

17. Steam Engine Valve And Receiving Valve

18. Governor

19. Break And Dynamometer

20. Cam

21. Balancing Of Rotating Mass

22. Balancing Of Reciprocating  Mass

23. Longitudinal And Transverse 

24. Torsional Vibration

25. Computer aided analysis

26. Automatic Control

Stress Analysis Of Leaf Spring IN Ansys

Title: Stress Analysis Of Leaf Spring IN Ansys

Guided By: Jaimin B Patel

Prepared By: Vinu Saji

Location : Vadodara institute Of Engineering 

Stress Analysis Of Corner Bracket

Title: Stress Analysis Of Corner Bracket

Guided By: Jaimin B Patel

Prepared By: Gilani Sanjay

Location : Vadodara institute Of Engineering 

Analysis of critical thickness of insulation of copper wire

Title: Analysis of critical thickness of insulation of copper wire

Guided By: Jaimin B Patel

Prepared By: Priyam Patel

Location : Vadodara institute Of Engineering 

FRICTION STIR WELDING OF EDGE JOINT OF ALUMINUM ALLOY AND ANALYSIS ON HYPERWORKS

Title:FRICTION STIR WELDING OF EDGE JOINT OF ALUMINUM ALLOY AND ANALYSIS ON                             HYPERWORKS

Guided By: Jaimin B Patel

Prepared By: Bhavik Darji

Location : Vadodara institute Of Engineering 

Stress Strain Analyssi Of Bicycle Frame In Ansys

Title: Stress Strain Analyssi Of Bicycle Frame In Ansys

Guided By: Jaimin B Patel

Prepared By: Vishvajit Daiya

Location : Vadodara institute Of Engineering 

EXPLICIT DYNAMIC ANALYSIS OF IMPACT OF BULLET ON PLATE

Title: EXPLICIT DYNAMIC ANALYSIS OF IMPACT OF BULLET ON PLATE

Guided By: Jaimin B Patel

Prepared By: Patel Hardik

Location : Vadodara institute Of Engineering 

STRESS, STRAIN , DEFORMATION AND TEMPERATURE ANALYSIS OF FLANGE

Title: STRESS, STRAIN , DEFORMATION AND TEMPERATURE  ANALYSIS OF   FLANGE

Guided By: Jaimin B Patel

Prepared By: Tandel Magnesh

Location : Vadodara institute Of Engineering 

Simulation Of Temp. Variation in Steady state Heat transfer in Composite Cylinder

Title: Simulation Of Temp. Variation in Steady state Heat transfer in  Composite Cylinder

Guided By: Jaimin B Patel

Prepared By: Meet Vadgama

Location : Vadodara institute Of Engineering 

CFD Analysis Of Readucer

Title: CFD Analysis Of Readucer

Guided By: Jaimin B Patel

Prepared By: Tarak Doshi

Location : Vadodara institute Of Engineering 

Casting Process Introduction

Casting Definition:

Casting is a manufacturing process by which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify. The solidified part is also known as a casting, which is ejected or broken out of the mold to complete the process.

There Are Different Types Of Casting Process:

1. PERMANENT MOLD OR GRAVITY DIE CASTING

This process is commonly known as permanent mold casting in U.S.A and gravity die casting in England.

A permanent mold casting makes use of a mold or metallic die which is permanent.

Molten metal is poured into the mold under gravity only and no external pressure is applied to force the liquid metal into the mold cavity. However, the liquid metal solidifies under pressure of metal in the risers, etc.

2. SLUSH CASTING

Slush casting is an extension of permanent mold casting or metallic mold casting.It is used widely for production of hollow casting without the use of core.The process is similar to metallic mold casting only with the difference that mold is allowed to open at an early stage and some un-solidified molten metal fall down leaving hollowness in the cast object.

3. PRESSURE DIE CASTING

Unlike permanent mold or gravity die casting, molten metal is forced into metallic mold or die under pressure in pressure die casting.The application of high pressure is associated with the high velocity with which the liquid metal is injected into the die to provide a unique capacity for the production of intricate components at a relatively low cost.

Die casting is widely used for mass production and is most suitable for non-ferrous metals and al1oys of low fusion temperature. The casting process is economic and rapid. The

surface achieved in casting is so smooth that it does not require any finishing operation.

4. Hot chamber die-casting

Hot chamber die-casting machine is the oldest of die-casting machines which is simplest to operate.

5. SHELL MOLD CASTING

Shell mold casting process is recent invention in casting techniques for mass production and smooth surface finish.It consists of making a mold that possesses two or more thin shells thermosetting resin bonded sands.

6. CENTRIFUGAL CASTING

In centrifugal casting process, molten metal is poured into a revolving mold and allowed to solidify molten metal by pressure of centrifugal force.Due to centrifugal force, the castings produced will be of high density type and of good strength.

6. CONTINUOUS CASTING

In this process the molten metal is continuously poured in to a mold cavity around which a facility for quick cooling the molten metal to the point of solidification. The solidified metal is then continuously extracted from the mold at predetermined rate.