metal casting processes mine.pptx
TRANSCRIPT
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Course Title
Manufacturing Process (MP)
Instructor Name: Muhammad Amjad
Designation: Assistant Professor
Email: [email protected]
mailto:[email protected]:[email protected] -
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Manufacturing Processes-Course Outline
1. Casting Processes
2. Bulk Deformation Processes
3. Joining Processes
4. Plastic Shaping Processes
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Recommended Books
1. Fundamentals of Modern Manufacturing, Materials,
Processes and Systems by Groover.
2. Manufacturing Engineering and Technology by
Kalpakjian, Shmid
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What is manufacturing???
Manus-hand
Factus-make
Technologic definition
Economic definition
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What is manufacturing???....
Technologic definition manufacturing is the application of physical and
chemical processes to alter the geometry, properties,
and/or appearance of a given starting material to make
parts or products; manufacturing also includes
assembly of multiple parts to make products.
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What is manufacturing???...
Economic definition
manufacturing is the transformation of materials into
items of greater value by means of one or more
processing and/or assembly operations
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Manufacturing & Production
production has a broader meaning thanmanufacturing.
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Review
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Manufacturing Industries
Primary Industries
Secondary Industries
Tertiary Industries
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Manufacturing Products
Consumer Goods
Capital Goods
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Production Quantity
Low volume production
Medium volume production
High volume production
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Product Quality
Soft product variety
Hard product variety
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Materials in Manufacturing
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Manufacturing Processes
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Production Systems
Production Facilities
Production Support Systems
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Production Layouts
Fixed position layout-job shop production
Process Layout-batch production
Cellular Layout-cellular manufacturing
Production Layout-mass production
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Production Layouts.
Fixed position layout-job shop production
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Production Layouts.
Process Layout-batch production
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Production Layouts.
Cellular Layout-cellular manufacturing
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Production Layouts.
Product Layout-mass production
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Manufacturing Support Systems
Manufacturing Engineering
Production Planning and Control
Quality Control
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Overview
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Introduction to CASTING
1. Suitability of casting process
2. Casting terminology
3. Types of Moulds and Moulding Processes
4. Desirable Mould Properties
5. Types of patterns
6. Pattern Allowances
7. Defects in Casting
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1. Suitability of casting process
Complex shapes with internal cavities and hollowsections
Surface finish
Size
Cost
Production rate
Simple process---single piece objects
Important engineering properties
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2 Casting terminology
Moulding flask Cope
Drag
Parting line or parting surface
Pattern
Mould
Poring basin
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2 Casting terminology contd
Sprue Runner
Gates
Gating system
Riser---------1. Blind 2. Open
Vents
Core
Core box Core prints
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2 Casting terminology contd
Chills External chills
Internal chills
Castability
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Sand Casting Process
Click here for video
http://localhost/var/www/apps/conversion/tmp/scratch_3/ppts%20linked%20vids%20n%20sub%20ppts/sand%20casting%20animation.FLVhttp://localhost/var/www/apps/conversion/tmp/scratch_3/ppts%20linked%20vids%20n%20sub%20ppts/sand%20casting%20animation.FLV -
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3. Types of Moulds
Expendable moulds Permanent moulds
Sand moulding
Green-sand molds - mixture of sand, clay, and water;
Green" means mold contains moisture at time of
pouring
Dry-sand mold - organic binders rather than clay
And mold is baked to improve strength
Skin-dried mold - drying mold cavity surface of agreen-sand mold to a depth of 10 to 25 mm, using
torches or heating lamps
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4. Desirable Mold Properties
Strength (Cohesiveness)- to maintain shape andresist erosion
Permeability- to allow hot air and gases to pass
through voids in sand
Thermal stability (Refractoriness) - to withstandhigh temperatures and to resist cracking on contact
with molten metal
Collapsibility- ability to give way and allow casting
to shrink without cracking the casting Reusability- can sand from broken mold be reused
to make other molds?
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5. Types of patterns &6. Pattern Allowances
Click here to go to pattern slides
http://localhost/var/www/apps/conversion/tmp/scratch_3/ppts%20linked%20vids%20n%20sub%20ppts/casting%20patterns%20[Repaired].pptxhttp://localhost/var/www/apps/conversion/tmp/scratch_3/ppts%20linked%20vids%20n%20sub%20ppts/casting%20patterns%20[Repaired].pptx -
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6. Defects in Casting
Click Here for Casting Defects
http://localhost/var/www/apps/conversion/tmp/scratch_3/ppts%20linked%20vids%20n%20sub%20ppts/Casting%20Defects.ppthttp://localhost/var/www/apps/conversion/tmp/scratch_3/ppts%20linked%20vids%20n%20sub%20ppts/Casting%20Defects.ppt -
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Casting Processes
Click Here for Casting Processes
http://localhost/var/www/apps/conversion/tmp/scratch_3/ppts%20linked%20vids%20n%20sub%20ppts/Types%20Casting%20Processes.pptxhttp://localhost/var/www/apps/conversion/tmp/scratch_3/ppts%20linked%20vids%20n%20sub%20ppts/Types%20Casting%20Processes.pptx