This document discusses heat treatment processes for glass. It begins by defining heat treatment of glass and heat treated glass. It then classifies the two main types of heat treated glass: heat-strengthened glass and fully tempered glass. Heat-strengthened glass is twice as strong as annealed glass, while fully tempered glass is approximately four times stronger. The document explains that heat treatment increases glass strength to resist stresses from wind, snow, sunlight, and meets safety standards. Finally, it outlines the two main heat treatment processes: annealing involves slow cooling to eliminate thermal stresses, while tempering involves rapid cooling after heating to high temperatures to strengthen the glass.
The desired to reach higher efficiencies, lower specific fuel consumption and reduced emission in modern engines has becomes the primary focus of engine researches and manufactures over the past three decades. Ceramic coating is a solution to such problem as they provide good thermal barrier properties for designers. In the design of adiabatic engines, reducing in cylinder heat rejection requires very special thermal barrier coatings on the engine combustion chamber. Partial Thermal barrier coatings (TBC) on the top surface of the piston is considered as a solution for reduction of unburned Hydrocarbon (HC) emission produce by incomplete combustion with respect to crevice volume when engines start. The TBC on the top piston surface decreases the thermal conductivity and increases the unburned charged oxidation, so that the metallic substrates will be exposed to lower peak temperature thereby reducing the thermal stress in engines components. Also thermal barrier coatings on other elements of combustion chamber of internal combustion engine offer advantages including fuel efficiency, multi fuel capacity and high power density. Therefore, thermal barrier coating (TBC) technology is successfully applied to the internal combustion engines, in particular to the combustion chamber.
Glass is an inorganic product of fusion that has cooled to a rigid condition without crystallizing. Glass is typically hard and brittle, and has a conchoidal fracture. A glass may be colorless or colored. It is usually transparent, but may be made translucent or opaque (such as in white, opal glass). Objects made of glass are loosely and popularly referred to as glass; such as glass for a tumbler, a barometer, a window, a magnifier, or a mirror. The subject of studying glass in materials science is an important part.
Mumbai University.
Mechanical Engineering
SEM III
Material Technology
Module 5
Effect of Alloying Elements in Steels:
Limitation of plain carbon steels, Significance of alloying elements, Effects of major and minor constituents, Effect of alloying elements on phase transformation Classification of tool steels and metallurgy of tool steels and stainless steel
Ceramic materials are inorganic, non-metallic materials made from compounds of a metal and a non metal. Ceramic materials may be crystalline or partly crystalline.
The word ceramic comes from the Greek word keramiko of pottery" or for pottery from keramos.
The desired to reach higher efficiencies, lower specific fuel consumption and reduced emission in modern engines has becomes the primary focus of engine researches and manufactures over the past three decades. Ceramic coating is a solution to such problem as they provide good thermal barrier properties for designers. In the design of adiabatic engines, reducing in cylinder heat rejection requires very special thermal barrier coatings on the engine combustion chamber. Partial Thermal barrier coatings (TBC) on the top surface of the piston is considered as a solution for reduction of unburned Hydrocarbon (HC) emission produce by incomplete combustion with respect to crevice volume when engines start. The TBC on the top piston surface decreases the thermal conductivity and increases the unburned charged oxidation, so that the metallic substrates will be exposed to lower peak temperature thereby reducing the thermal stress in engines components. Also thermal barrier coatings on other elements of combustion chamber of internal combustion engine offer advantages including fuel efficiency, multi fuel capacity and high power density. Therefore, thermal barrier coating (TBC) technology is successfully applied to the internal combustion engines, in particular to the combustion chamber.
Glass is an inorganic product of fusion that has cooled to a rigid condition without crystallizing. Glass is typically hard and brittle, and has a conchoidal fracture. A glass may be colorless or colored. It is usually transparent, but may be made translucent or opaque (such as in white, opal glass). Objects made of glass are loosely and popularly referred to as glass; such as glass for a tumbler, a barometer, a window, a magnifier, or a mirror. The subject of studying glass in materials science is an important part.
Mumbai University.
Mechanical Engineering
SEM III
Material Technology
Module 5
Effect of Alloying Elements in Steels:
Limitation of plain carbon steels, Significance of alloying elements, Effects of major and minor constituents, Effect of alloying elements on phase transformation Classification of tool steels and metallurgy of tool steels and stainless steel
Ceramic materials are inorganic, non-metallic materials made from compounds of a metal and a non metal. Ceramic materials may be crystalline or partly crystalline.
The word ceramic comes from the Greek word keramiko of pottery" or for pottery from keramos.
One can get full description of metallic glasses which contains history, preparation methods, effects on metallic glasses, properties and application part is also there with diagrams, tables and graphs
A (brief) preview of Phase-change material as Thermal energy storage.
Energy demands vary on daily, weekly and seasonal bases. TES is helpful for balancing
between the supply and demand of energy.
Thermal energy storage (TES) is defined as the temporary holding of thermal energy in the form of hot or cold substances for later utilization.
TES systems deal with the storage of energy by cooling, heating, melting, solidifying or vaporizing a material and the thermal energy becomes available when the process is reversed.
TES system for a particular application depends on storage duration, economics, supply and utilization temperature requirements, storage capacity, heat losses and available
Space.
6.1 Annealing: Purposes of annealing, Annealing temperature range, Types and applications
6.2 Normalizing: Purposes of Normalizing, Temperature range, Broad applications of Normalizing
6.3 Hardening: Purposes of hardening, Hardening temperature range ,application
6.4 Tempering: Purpose of tempering, Types of tempering and its applications
6.5 Case hardening methods like Carburizing, Nitriding, and Cyaniding.
6.6 Heat treatment Furnaces – Muffle , Box type
Dispersion Hardening:
Hard particles:
Mixed with matrix powder
Consolidated
Processed by powder metallurgy techniques
Second phase – Very little solubility (Even at elevated temp.)
No coherency
So thermally Stable at very high temp.
Resists :
Grain growth
Over aging
Recrystallization
Mobility of dislocation
Different from particle Metallic Composites (Volume Fraction is 3 to 4% max.) (Does not affect stiffness)
Examples : Al2O3 in Al or Cu, ThO2 in Ni
Ceramics and Glass Technology (Silicate Glasses, Boric Oxide and Borate Glass...Ajjay Kumar Gupta
Ceramics and Glass Technology (Silicate Glasses, Boric Oxide and Borate Glasses, Phosphorus Pentoxide and Phosphate Glasses, Germanium Dioxide and Germanate Glasses, Nitrate Glasses, Halide Glasses, Chalcogenide Glasses, Modern Glass Working, Monax and Pyrex Glass)
Glass-ceramics are mostly produced in two steps: First, a glass is formed by a glass-manufacturing process. The glass is cooled down and is then reheated in a second step. In this heat treatment the glass partly crystallizes. In most cases nucleation agents are added to the base composition of the glass-ceramic. These nucleation agents aid and control the crystallization process.
See more
http://goo.gl/o2fHY4
http://goo.gl/45cRC2
http://goo.gl/PWr5dE
Email:
npcs.ei@gmail.com
info@entrepreneurindia.co
Tags
applications of Ceramics, Boric Oxide and Borate Glasses, Business guidance for glass ceramics, Business Plan for a Startup Business, Business start-up, Ceramic and glass business, ceramic business ideas, Ceramic forming techniques, Ceramic Industry, Ceramic Material Manufacturing Methods, Ceramic processing, Ceramics and Glass Technology, Ceramics Based Profitable Projects, Ceramics Based Small Scale Industries Projects, ceramics business plan, Ceramics Forming Processes, Ceramics pottery Manufacturing, Ceramics Processing Projects, Ceramics Production Industry in India, Chalcogenide Glasses, Germanium Dioxide and Germanate Glasses, Glass & ceramics Business, Glass & ceramics Small Business Manufacturing, Glass and Ceramics, glass and ceramics industry, Glass and Ceramics Technology, Glass Based Profitable Projects, Glass Based Small Scale Industries Projects, Glass Ceramic Products, Glass Ceramics Industry, glass ceramics properties, Glass Forming & Processing, glass forming process, Glass Forming Technology, Glass making - Industry process, Glass Manufacture and Processing, Glass Manufacturing Process, Glass Processing Projects, Glass production, Glass Production Industry in India, Glass-ceramic materials, Glass-ceramics: their production, properties and potential, Great Opportunity for Startup, Halide Glasses, How to Start a Ceramic Business, How to Start a Ceramics Production Business, How to start a glass & ceramics business?, How to Start a Glass Production Business, How to start a successful glass ceramics business, How to Start Ceramics Production Industry in India, How to Start Glass Production Industry in India, Modern Glass Working, Modern Small and Cottage Scale Industries, Monax and Pyrex Glass, Most Profitable Ceramics manufacturing Business Ideas, Most Profitable Glass manufacturing Business Ideas, New small scale ideas in Ceramics Production industry, New small scale ideas in Glass Production industry, Nitrate Glasses, Phosphorus Pentoxide and Phosphate Glasses, Processing Glass and Glass-Ceramics, Production of Glass Ceramic, Profitable Small and Cottage Scale Industries
One can get full description of metallic glasses which contains history, preparation methods, effects on metallic glasses, properties and application part is also there with diagrams, tables and graphs
A (brief) preview of Phase-change material as Thermal energy storage.
Energy demands vary on daily, weekly and seasonal bases. TES is helpful for balancing
between the supply and demand of energy.
Thermal energy storage (TES) is defined as the temporary holding of thermal energy in the form of hot or cold substances for later utilization.
TES systems deal with the storage of energy by cooling, heating, melting, solidifying or vaporizing a material and the thermal energy becomes available when the process is reversed.
TES system for a particular application depends on storage duration, economics, supply and utilization temperature requirements, storage capacity, heat losses and available
Space.
6.1 Annealing: Purposes of annealing, Annealing temperature range, Types and applications
6.2 Normalizing: Purposes of Normalizing, Temperature range, Broad applications of Normalizing
6.3 Hardening: Purposes of hardening, Hardening temperature range ,application
6.4 Tempering: Purpose of tempering, Types of tempering and its applications
6.5 Case hardening methods like Carburizing, Nitriding, and Cyaniding.
6.6 Heat treatment Furnaces – Muffle , Box type
Dispersion Hardening:
Hard particles:
Mixed with matrix powder
Consolidated
Processed by powder metallurgy techniques
Second phase – Very little solubility (Even at elevated temp.)
No coherency
So thermally Stable at very high temp.
Resists :
Grain growth
Over aging
Recrystallization
Mobility of dislocation
Different from particle Metallic Composites (Volume Fraction is 3 to 4% max.) (Does not affect stiffness)
Examples : Al2O3 in Al or Cu, ThO2 in Ni
Ceramics and Glass Technology (Silicate Glasses, Boric Oxide and Borate Glass...Ajjay Kumar Gupta
Ceramics and Glass Technology (Silicate Glasses, Boric Oxide and Borate Glasses, Phosphorus Pentoxide and Phosphate Glasses, Germanium Dioxide and Germanate Glasses, Nitrate Glasses, Halide Glasses, Chalcogenide Glasses, Modern Glass Working, Monax and Pyrex Glass)
Glass-ceramics are mostly produced in two steps: First, a glass is formed by a glass-manufacturing process. The glass is cooled down and is then reheated in a second step. In this heat treatment the glass partly crystallizes. In most cases nucleation agents are added to the base composition of the glass-ceramic. These nucleation agents aid and control the crystallization process.
See more
http://goo.gl/o2fHY4
http://goo.gl/45cRC2
http://goo.gl/PWr5dE
Email:
npcs.ei@gmail.com
info@entrepreneurindia.co
Tags
applications of Ceramics, Boric Oxide and Borate Glasses, Business guidance for glass ceramics, Business Plan for a Startup Business, Business start-up, Ceramic and glass business, ceramic business ideas, Ceramic forming techniques, Ceramic Industry, Ceramic Material Manufacturing Methods, Ceramic processing, Ceramics and Glass Technology, Ceramics Based Profitable Projects, Ceramics Based Small Scale Industries Projects, ceramics business plan, Ceramics Forming Processes, Ceramics pottery Manufacturing, Ceramics Processing Projects, Ceramics Production Industry in India, Chalcogenide Glasses, Germanium Dioxide and Germanate Glasses, Glass & ceramics Business, Glass & ceramics Small Business Manufacturing, Glass and Ceramics, glass and ceramics industry, Glass and Ceramics Technology, Glass Based Profitable Projects, Glass Based Small Scale Industries Projects, Glass Ceramic Products, Glass Ceramics Industry, glass ceramics properties, Glass Forming & Processing, glass forming process, Glass Forming Technology, Glass making - Industry process, Glass Manufacture and Processing, Glass Manufacturing Process, Glass Processing Projects, Glass production, Glass Production Industry in India, Glass-ceramic materials, Glass-ceramics: their production, properties and potential, Great Opportunity for Startup, Halide Glasses, How to Start a Ceramic Business, How to Start a Ceramics Production Business, How to start a glass & ceramics business?, How to Start a Glass Production Business, How to start a successful glass ceramics business, How to Start Ceramics Production Industry in India, How to Start Glass Production Industry in India, Modern Glass Working, Modern Small and Cottage Scale Industries, Monax and Pyrex Glass, Most Profitable Ceramics manufacturing Business Ideas, Most Profitable Glass manufacturing Business Ideas, New small scale ideas in Ceramics Production industry, New small scale ideas in Glass Production industry, Nitrate Glasses, Phosphorus Pentoxide and Phosphate Glasses, Processing Glass and Glass-Ceramics, Production of Glass Ceramic, Profitable Small and Cottage Scale Industries
This presentation gives complete detail about the production, construction and applications with examples of different types of glass and polymers used in buildings
toughened glass/tempered glass sheet introduction、properties.
Steps involved in manufacturing of toughened glass;
Specifications & sizes of toughened glass;
toughened glass Uses and Advantages;
Matters needing attention;
Other type of glass;
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
1. HeatTreatment Of Glass
PRESENTED BY
MohammadTarequl Islam
M.S.(Inorganic Chemistry)
Session: 2018-2019
Department Of Chemistry
University Of Chittagong
3. What is HeatTreatment of Glass?
Answer: HeatTreatment of Glass is a group of industrial and metalworking
processes used to alter the physical, and sometimes chemical, properties
of glass. Heat treatment techniques include annealing, case hardening,
precipitation strengthening, tempering, carburizing, normalizing and
quenching.
What is heat treated glass?
Answer: Heat-treated glass is a term used to describe glass that has
been processed through a tempering furnace to alter its strength
characteristics, provide greater resistance to thermal and mechanical
stresses and achieve specific break patterns for safety glazing
4. CLASSIFICATION OF HEATTREATED GLASSES
Heat-Strengthened Glass:
Heat-strengthened (HS) glass has been
subjected to a specifically controlled heating
and cooling cycle, and is generally twice as
strong as annealed glass of the same
thickness and configuration.
FullyTempered Glass:
Tempered glass is approximately four times
stronger than regular annealed glass of the
same thickness and configuration.Tempered
glass is often referred to as ‘safety glass’ .
There are two different types of
heat treated glasses.
Heat-Strengthened(HS)
FullyTempered(FT)
6. Purpose of HeatTreatment of Glass
Why HeatTreatment of Glass is done?
Answer: HeatTreatment of Glass is done to-
• Increase its strength to resist external stresses such as wind and snow
loads, or thermal loads caused by the sun’s energy.
• Temper glass so that it meets safety glazing requirements defined by
applicable codes or federal standards.
7. HeatTreatment Process Of Glass
ANNEALING :
• When glass cools from the forming range to room temperature , thermal
stresses develop that adversely affect strength properties.
• Annealing is done to eliminate this stress.
• Involves heating the glass to annealing range, holding it there for a period
of time, and then cooling it slowly to room temperature.
TEMPERING :
• Involves heating glass to around the softening point and then cooling it
rapidly with blasts of air or by quenching it in oil.
• Heat tempered glass is 3 to 5 times stronger than annealed glass while still
retaining its initial clarity, hardness, and expansion co-efficient.