A presentation on topic Plastics ceramics and glass processing, the all content based on GTU syllabus And ideal for gtu students. The PPT contains videos for clear understanding of concept.
Blow Molding Process on Manufacturing Technology .
Tackles about the definition of Blow molding process, its various types , advantages and disadvantages and the application of it on a manufacturing set-up.
Blow Molding Process on Manufacturing Technology .
Tackles about the definition of Blow molding process, its various types , advantages and disadvantages and the application of it on a manufacturing set-up.
this is my prsentation of Plastic Process and Processing Parameter in manufacturing process. here discussed moulding process for plastic, plastic injection moulding, machine parts and procedure, material used to making mould and blow moulding process, thermoforming process, vacuum forming process, and application
http://www.spiratex.com/ : Understand the complete process of custom plastic extrusion with step by step details of the process through this presentation. It also explains the various specialized forms of plastic extrusions.
this is my prsentation of Plastic Process and Processing Parameter in manufacturing process. here discussed moulding process for plastic, plastic injection moulding, machine parts and procedure, material used to making mould and blow moulding process, thermoforming process, vacuum forming process, and application
http://www.spiratex.com/ : Understand the complete process of custom plastic extrusion with step by step details of the process through this presentation. It also explains the various specialized forms of plastic extrusions.
PLASTIC MOULDING and Methods involving in itGaurav Tyagi
plastic moulding a topic with some less knowledges
but surely help out the masters as well as unger graduates in their assignments
no need to modify just go through it and take some innovative ideas and some will be making some more better ones
but for those who are in a hurry and want to minimise their time or wants to save their time its a copmlete package just go through it
Lecture notes on Structure and Properties of Engineering Polymers
Course Objectives:
The main objective is to introduce polymers as an engineering material and emphasize the basic concepts of their nature, production and properties. Polymers are introduced at three levels; namely, the molecular level, the micro level, and macro-level. Through knowledge of all three levels, student can understand and predict the properties of various polymers and their performance in different products. The course also aims at introducing the students to the principles of polymer processing techniques and considerations of design using engineering polymers.
This presentation includes basics of mold design, important aspects of molds and mold design that will be useful for understanding design, material aspects, and theoretical aspects of mold making and mold engineering. ProE mold design module known as Pro/MOLDESIGN is also briefly explained in the slide.
The inclined top mold is also known as the inclined tip. It is the mechanism used to mold the internal barbs of the product in the mold design. It is suitable for relatively simple barbs.
Plastic injection molding continues to advance as new technology emerges, and with its growth comes new opportunities for using parts made with this method in automotive manufacturing. The global industry continues to work a higher percentage of plastic injection molding parts into each new round of vehicle designs, and plastic injection molding is capable of keeping up with demand.
Mercedes benz service centre training reportPanchal Anand
Industrial training (Internship) Report.
Mercedes_benz Service centre.
Abstract: As a Mechanical Engineering Student I am very interested in automobile Engineering. I always keen to learn different mechanisms used in vehicles, I used to watch animated videos on YouTube about automobile mechanisms like Differential, Automatic transmission gearbox etc, but I never watched it in real. So, it was a great opportunity for me to do two weeks internship at Mercedes-benz Service centre, Ambli, Ahmedabad. The internship was concentrated on the car services. At the beginning of the internship I had several queries in my mind regarding the different technologies used in Mercedes-benz and what skills are needed in organization. During my internship several queries are cleared by doing some activities. The objective of this internship is to understand working of different mechanisms, to get knowledge of regular services and the major-minor problem that can be observed in day to day life. Apart from technical knowledge, I also learnt rules and safety instruction, Inventory management, Quality Control. I realize the responsibility of technicians working on the car. So, this internship was a great experience. I found out how much I am strong in automobile field. I gained new knowledge and skills and met many new people. Working together with people having different background and education was great experience. I also accompanied by other 2-3 students who were also on industrial training, so it was nice knowledge sharing. I achieved many of my learning goals. I got insight into the work of an organization. At last this internship has given me new insights and motivation to pursue a career in mechanical engineering.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
5. General properties: more durable, harder, tough, light.
Typical uses: automobile parts, construction materials.
Plastic types: Thermosets
Examples:
Unsaturated Polyesters: lacquers, varnishes, boat hulls, furniture
Epoxies and Resins: glues, coating of electrical circuits,
composites: fiberglass in helicopter blades, boats, …
6. Plastic types: Elastomers
General properties: these are thermosets, and have rubber-like properties.
Typical uses: medical masks, gloves, rubber-substitutes
Examples:
Polyurethanes: mattress, cushion, insulation, toys
Silicones: surgical gloves, oxygen masks in medical applications
joint seals
7. General properties: low melting point, softer, flexible.
Typical uses: bottles, food wrappers, toys, …
Examples:
Polyethylene: packaging, electrical insulation, milk and water bottles, packaging film
Polypropylene: carpet fibers, automotive bumpers, microwave containers, prosthetics
Polyvinyl chloride (PVC): electrical cables cover, credit cards, car instrument panels
Polystyrene: disposable spoons, forks, Styrofoam™
Acrylics (PMMA: polymethyl methacrylate): paints, fake fur, plexiglass
Polyamide (nylon): textiles and fabrics, gears, bushing and washers, bearings
PET (polyethylene terephthalate): bottles for acidic foods like juices, food trays
PTFE (polytetrafluoroethylene): non-stick coating, Gore-Tex™ (raincoats), dental floss
Plastic types: Thermoplastics
10. Plastics Processing: Blow molding
heated glass
3-piece mold
(a) The hollow piece of heated glass (parison)
is first created by a blow mold
(see text-book Fig 17.25)
(b) The mold is put together
(c) Plunger and hot air push the
glass up
(d) Hot air blows the glass out towards
the mold surface
(e) Mold comes apart, bottle is removed
heated glass
3-piece mold
(a) The hollow piece of heated glass (parison)
is first created by a blow mold
(see text-book Fig 17.25)
(b) The mold is put together
(c) Plunger and hot air push the
glass up
(d) Hot air blows the glass out towards
the mold surface
(e) Mold comes apart, bottle is removed
- similar to glass blow-molding -
15. Plastics Processing: Compression and Transfer Molding
• used mostly for thermosetting polymers
• mold is heated and closed using pressure
• plastic flows to fills the cavity
• flash must be trimmed by finishing
dishes, handles for cooking pots
skis, housing for high-voltage switches
some rubber parts like shoe soles
and even composites such as fiber-reinforced parts
20. Injection Molding: geometry of the mold
Basic components:
mold pieces (define the geometry of the part), AND
sprue, gates, runners, vents, ejection pins, cooling system
21. Injection Molding: designing injection molds
1. molding directions number of inserts/cams required, if any
2. parting lines
3. parting planes by extending the parting line outwards
4. gating design where to locate the gate(s) ?
5. multiple cavity mold fix relative positions of the multiple parts
6. runners: flow of plastic into the cavity
7. sprue located:
8. functional parts of the mold
- ejection system: to eject the molded part
- systems to eject the solidified runners
- alignment rods: to keep all mold components aligned
22. Injection Molding: designing injection molds
1. molding directions number of inserts/cams required, if any
2. parting lines
3. parting planes by extending the parting line outwards
4. gating design where to locate the gate(s) ?
5. multiple cavity mold fix relative positions of the multiple parts
6. runners: flow of plastic into the cavity
7. sprue located:
8. functional parts of the mold
- ejection system: to eject the molded part
- systems to eject the solidified runners
- alignment rods: to keep all mold components aligned
cup
parting line
parting plane
core
cavity
ejection
plate
runner
core
cavity
nozzle knob
cavity
core
(a) (b) (c) (d)
core
cavity
part
core
cavity
ejection
plate
core
cavity
ejection
plate
runner
core
cavity
runner
core
cavity
nozzle knob
cavity
core
nozzle knob
cavity
core
(a) (b) (c) (d)
core
cavity
part
core
cavity
core
cavity
part
gate
26. • Properties:
-- Tm for glass is moderate, but large for other ceramics.
-- Small toughness, ductility; large moduli & creep resist.
• Applications:
-- High T, wear resistant, novel uses from charge neutrality.
• Fabrication
-- some glasses can be easily formed
-- other ceramics can not be formed or cast.
Glasses Clay
products
Refractories Abrasives Cements Advanced
ceramics
-optical
-composite
reinforce
-containers/
household
-whiteware
-bricks
-bricks for
high T
(furnaces)
-sandpaper
-cutting
-polishing
-composites
-structural
engine
-rotors
-valves
-bearings
-sensors
Taxonomy of Ceramics
27. Shaping of Ceramics
1- First, the raw materials must be ground or crushed down into fine
particles.
2- Next, the particles must be mixed with additives, which include:
binder- to hold particles together
lubricant- to reduce friction and aid in removing from mold
wetting agent- to improve mixing process (commonly water)
plasticizer- to improve ease of forming mixture
agents- control of foaming and sintering
deflocculent- to create uniform mixture by applying like
charges to all particles, causing them to repel
each other
3- Finally, the material must be shaped, dried, and fired.
28. Crushing is typically done in a ball mill, in either wet or dry conditions.
Wet milling is preferred because it strengthens particle bonds and
limits dust.
For correct sizing, the crushed particles are passed through a
sieve.
• Mixing
Particles are then mixed with one of the additives listed and described on the
previous slide.
Crushing
29. Casting
Slip Casting (Drain Casting)-The crushed particles are first mixed with
water, then are poured into a mold.
Pouring must be done properly to avoid air
pockets.
When some of the water has been absorbed, the
remainder of the mixture is poured out of
the top of the mold.
The top of the part can then be trimmed.
Advantages- inexpensive components
Disadvantages- limited control of dimensions & low production rate
Doctor-Blade Process- Used to produce ceramic sheets thinner than 1.5mm.
Ceramic mixture is forced under a blade to create a film, which is then dried in a
drying chamber (usually attached to the same machine).
30. Forming and Shaping of Glass
Flat Sheet and Plate Glass
Float Method- Molten glass is floated over
a “bath” of molten tin before it is solidified
in a separate chamber.
No additional finishing is necessary.
Drawing Process- Molten glass is
squeezed through two rolls, then
moves on o two smaller rolls.
Rolling Process- Similar to drawing
process, but patterns are commonly
imprinted from the rolls onto the glass,
leaving a rough finish.
Molten Glass
31. Glass Tubing and Rods
Tubing- Molten glass is wrapped around a mandrel and taken out by two rolls.
Air is blown through the mandrel to prevent the tube from collapsing
into itself.
Some machines manufacture 2000 fluorescent light bulbs per minute
using this method.
Rods- Rods are made in exactly the same way,
but without the air blown through
the mandrel.
This allows the glass to collapse and
become solid.
32. Processes used to make discrete glass objects
• Blowing
• Pressing
• Centrifugal casting
• Sagging
Discrete glass products
33. • Blowing process: Blown air
expands a hollow gob of
heated glass against the inner
walls of a mold.
• A parting agent (such as oil
or emulsion) is usually used
to prevent the glass from
sticking to the mold.
Blowing
34. • Applications:
Hollow and thin-
walled glass items
(bottles, vases, and
flasks)
• Surface finish:
Acceptable for
most applications
Blowing
35. • Pressing process: A gob of molten glass is placed
into a mold and pressed by a plunger into a
confined shape.
• Molds may be one piece or split. Solidifying glass
acquires the shape of the mold-plunger cavity.
• Similar to closed-die forging.
Pressing
36. • One-piece molds cannot be used in pressing if the plunger
cannot be retracted.
• One-piece molds cannot be used for thin-walled items
• Split molds can accommodate thin-walled products
Pressing
37. Pressing
• Pressing can produce higher dimensional
accuracy than blowing.
Press and blow process
• After a part is pressed, it is blown to further
expand the glass into the mold.
38. • Centrifugal casting
process: The centrifugal
force pushes the molten
glass against the wall.
• TV picture tubes and
missile nose cones can be
made with centrifugal
casting.
Centrifugal Casting (Spinning)
39. • Sagging process: A sheet of glass is placed over a mold
and heated. The glass sags by its own weight and takes
the shape of the mold.
• Typical applications include dishes, sunglass lenses,
mirrors for telescopes, and lighting panels.
Sagging