Sapphit is a single crystal sapphire material produced through a patented tempering process that minimizes internal tension and ensures material homogeneity. It offers superior properties to sintered alumina ceramics for high temperature and corrosive applications, including higher purity, no grain boundaries, and better strength, hardness, and thermal and chemical resistance. Potential uses discussed in the document include protective casings for thermocouples, heating elements for furnaces and heaters, and applications in material and structural analysis due to its strength and transparency.
REFRATHERM® Eco High-End Insulation for the Tunnel Kiln CarRefratechnik Group
For more than 50 years, Refratechnik has carried out research and development in the field of biogenic silica. First experiences in thermal processes have led to a continuous expansion of know-how and our own production of the material. The thermal insulating properties have been further developed and specialised for today’s applications.
The development of the special insulation REFRATHERM® Eco for use in the heavy clay industry opens up convincing new applications.
1.0Monitor Oxygen Content continuously to save time and prevent bad welds
2.0 Enclose the volume to be purged as tightly as possible
without prejudicing the materials chosen or the weld itself
3.0 Use the correct materials to enclose the volume around
the weld, for best purging results.
4.0 Introduce your purge gas slowly and at the bottom of the
purge zone created
5.0 Wait until the oxygen level has stabilized at the reading you need
before you start to weld. Usually less than 0.1%
6.0 Keep the purge gas flowing until the material being welded has fallen
below the oxidation temperature
7.0 Cleanliness is so critical in obtaining a good weld purge
8.0 Purge tack welds to stop contamination getting into the main weld pool
9.0 Use a high quality of purge gas
10.0 Avoid supply pipe leaks to prevent air getting into the purge lines
The fast and lasting solution for hot and cold repairs.
For conventional hot or cold repairs, e.g. on casting ladles and covers, a time of roughly one day is required, plus about 1 to 1,2 tons of repair material.
We have developed a monolithic line of products that cuts the repair times and improves the working conditions: REFRASPRAY®.
Our main goal is to cover our customer needs in terms of quality, performance and product lifetime. How important are the treatments and processes that our canopies suffer? Check it in this technical article.
REFRATHERM® Eco High-End Insulation for the Tunnel Kiln CarRefratechnik Group
For more than 50 years, Refratechnik has carried out research and development in the field of biogenic silica. First experiences in thermal processes have led to a continuous expansion of know-how and our own production of the material. The thermal insulating properties have been further developed and specialised for today’s applications.
The development of the special insulation REFRATHERM® Eco for use in the heavy clay industry opens up convincing new applications.
1.0Monitor Oxygen Content continuously to save time and prevent bad welds
2.0 Enclose the volume to be purged as tightly as possible
without prejudicing the materials chosen or the weld itself
3.0 Use the correct materials to enclose the volume around
the weld, for best purging results.
4.0 Introduce your purge gas slowly and at the bottom of the
purge zone created
5.0 Wait until the oxygen level has stabilized at the reading you need
before you start to weld. Usually less than 0.1%
6.0 Keep the purge gas flowing until the material being welded has fallen
below the oxidation temperature
7.0 Cleanliness is so critical in obtaining a good weld purge
8.0 Purge tack welds to stop contamination getting into the main weld pool
9.0 Use a high quality of purge gas
10.0 Avoid supply pipe leaks to prevent air getting into the purge lines
The fast and lasting solution for hot and cold repairs.
For conventional hot or cold repairs, e.g. on casting ladles and covers, a time of roughly one day is required, plus about 1 to 1,2 tons of repair material.
We have developed a monolithic line of products that cuts the repair times and improves the working conditions: REFRASPRAY®.
Our main goal is to cover our customer needs in terms of quality, performance and product lifetime. How important are the treatments and processes that our canopies suffer? Check it in this technical article.
REFRAWIRE® A new Technology for Prefabricated ComponentsRefratechnik Group
In applications subjected to fast temperature variations, severe abrasion, and high mechanical loads, standard concretes or refractory bricks are not always able to withstand these loads. Now, REFRAWIRE®, the latest generation of our prefabricated components is the ideal solution. Prefabricated REFRAWIRE® components were developed specifically to protect equipment linings from thermal shocks and mechanical influences.
The new development: Hybrid technology With the development of REFRACAST®️ Hybrid castables, Refratechnik Steel has optimized the technology of Sol-Gel bonded, cement-free castables even further.
Low-Alpha Technology: The innovative refractory solution for steel devices su...Refratechnik Group
In modern steel production, plant reliability is playing an increasingly important role. Innovative and comprehensive refractory concepts are decisive when it comes to optimizing steel production processes in terms of performance and costs. In close cooperation with our customers, we develop, test, and supply perfect solutions.
Saving energy with insulation.
A decisive role in modern process guidance for reducing energy consumption is played by the insulating materials used in every refractory lining.
As invisible but important components in every refractory lining, high-temperature insulating materials reduce the lining's thermal profile and thereby protect the furnace's steel shell from excesive heating effects.
With our newly developed PROLITE®, we offer our customers a highly insulating material made of biogenic silicilic acid, which combines these factors in a sustainable way.
Refratechnik aimed at developing a range of refractory concretes that are insensitive to rapid heating.
The result of our research and development work is the Nanobond technology.
6 Guidelines to Select Right Refractory for your Furnace.Gita Gilada
Expert Says - "Picking the Right Refractory will not only Last Longer, it also Saves the Annual Fuel Cost". Type of Furnace & Type of Fuel matters most.
The insulating covering agent for ingots.
NERMAT® AF's excellent insulating properties guarantee a slow solidification of the ingot top and a higher amount of impurities can be eliminated from the steel.
REFRATHERM® | Refractory Insulating Products for the Cement and Lime IndustryRefratechnik Group
The use of refractory insulating products is absolutely indispensable for industrial high temperature processes that are economical and ecological.
Refratechnik Cement develops and constructs innovative refractory lining systems for the cement and lime industry, putting special emphasis on the heat-insulating properties.
Refractory insulating materials produced by Refratechnik Cement are amongst others supplied as plates, blankets, cords, wool or paper to cope with all demands that are made on advanced, high-grade refractory constructions.
Choosing the right PCB laminate is key to a quality product, You must consider application, assembly techniques, etc. But don't get caught by the "latest & greatest" fad. Make sensible decisions and save yourself money without compromising quality.
Perfect Insulating Materials for the Steel Industry.
For more than 40 years Refratechnik has been developing products with this natural raw material. With the foundation of Refratechnik Casting in 1997 a re-orientation of Refratechnik’s activities, in this field, took place.
The Casting experts have 25 years of experience in the production and application of biogenic silicas. This know-how has helped put Refratechnik Casting into a commanding position.
Intelligent solutions in the overall refractory concept.
Refratechnik has developed optimized solutions for the wide range of demands placed on prefabricated refractories in all industries. Based on our long-term experience in manufacturing high-quality prefabricated refractories, new methods have been found for drying, combustion, and compacting technology.
Intelligent refractory technology for the primary aluminium industryRefratechnik Group
With decades of experience in refractory technology for the aluminium industry, Refratechnik is one of the world's most innovative companies in this field.
For your activities in the aluminium industry, we offer comprehensive and customized refractory solutions. Our company's aim is to respond to the significantly increased demands made on refractory materials during recent years, by developing new and high-grade products.
REFRAWIRE® A new Technology for Prefabricated ComponentsRefratechnik Group
In applications subjected to fast temperature variations, severe abrasion, and high mechanical loads, standard concretes or refractory bricks are not always able to withstand these loads. Now, REFRAWIRE®, the latest generation of our prefabricated components is the ideal solution. Prefabricated REFRAWIRE® components were developed specifically to protect equipment linings from thermal shocks and mechanical influences.
The new development: Hybrid technology With the development of REFRACAST®️ Hybrid castables, Refratechnik Steel has optimized the technology of Sol-Gel bonded, cement-free castables even further.
Low-Alpha Technology: The innovative refractory solution for steel devices su...Refratechnik Group
In modern steel production, plant reliability is playing an increasingly important role. Innovative and comprehensive refractory concepts are decisive when it comes to optimizing steel production processes in terms of performance and costs. In close cooperation with our customers, we develop, test, and supply perfect solutions.
Saving energy with insulation.
A decisive role in modern process guidance for reducing energy consumption is played by the insulating materials used in every refractory lining.
As invisible but important components in every refractory lining, high-temperature insulating materials reduce the lining's thermal profile and thereby protect the furnace's steel shell from excesive heating effects.
With our newly developed PROLITE®, we offer our customers a highly insulating material made of biogenic silicilic acid, which combines these factors in a sustainable way.
Refratechnik aimed at developing a range of refractory concretes that are insensitive to rapid heating.
The result of our research and development work is the Nanobond technology.
6 Guidelines to Select Right Refractory for your Furnace.Gita Gilada
Expert Says - "Picking the Right Refractory will not only Last Longer, it also Saves the Annual Fuel Cost". Type of Furnace & Type of Fuel matters most.
The insulating covering agent for ingots.
NERMAT® AF's excellent insulating properties guarantee a slow solidification of the ingot top and a higher amount of impurities can be eliminated from the steel.
REFRATHERM® | Refractory Insulating Products for the Cement and Lime IndustryRefratechnik Group
The use of refractory insulating products is absolutely indispensable for industrial high temperature processes that are economical and ecological.
Refratechnik Cement develops and constructs innovative refractory lining systems for the cement and lime industry, putting special emphasis on the heat-insulating properties.
Refractory insulating materials produced by Refratechnik Cement are amongst others supplied as plates, blankets, cords, wool or paper to cope with all demands that are made on advanced, high-grade refractory constructions.
Choosing the right PCB laminate is key to a quality product, You must consider application, assembly techniques, etc. But don't get caught by the "latest & greatest" fad. Make sensible decisions and save yourself money without compromising quality.
Perfect Insulating Materials for the Steel Industry.
For more than 40 years Refratechnik has been developing products with this natural raw material. With the foundation of Refratechnik Casting in 1997 a re-orientation of Refratechnik’s activities, in this field, took place.
The Casting experts have 25 years of experience in the production and application of biogenic silicas. This know-how has helped put Refratechnik Casting into a commanding position.
Intelligent solutions in the overall refractory concept.
Refratechnik has developed optimized solutions for the wide range of demands placed on prefabricated refractories in all industries. Based on our long-term experience in manufacturing high-quality prefabricated refractories, new methods have been found for drying, combustion, and compacting technology.
Intelligent refractory technology for the primary aluminium industryRefratechnik Group
With decades of experience in refractory technology for the aluminium industry, Refratechnik is one of the world's most innovative companies in this field.
For your activities in the aluminium industry, we offer comprehensive and customized refractory solutions. Our company's aim is to respond to the significantly increased demands made on refractory materials during recent years, by developing new and high-grade products.
Low Cost & High Performance “Refractories & Insulation Boards
manufacturing company many years of Expertise in manufacturing and supplying High Temperature Refractory Insulation Boards, Gaskets, Insulation Rollers, and Hitech Advanced Materials for Steel Industry, Aluminium Industry, Power Plant.
Steel Industry/Aluminium Industry/Cryogenic Application/Casting/Boiler/ Power Plant etc.
PAN INDIA / IMPORT/EXPORT
Ceramic and Hybrid bearings have been used widely throughout a host of nuclear, vacuum, cryogenic, high speed, insulating and non-magnetic applications. Please get in touch so that our team can help you select the right materials.
Visit: http://www.carterbearings.co.uk/unasis/hybrid-and-ceramic-bearings/
Do you have a requirement for heat shrink or cold shrink cable accessories for your running projects? Compaq International is among the industry leaders for power cable accessories such as cable joints and cable terminations. The company manufactures products that use both heat shrink and cold shrink technologies with highly precise measurements. We not only provide top-notch products, but also unparalleled after-sales service. To inquire about our products, get in touch with us here - https://www.compaqinternational.com/contact.php
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Korea Zinc Flake Coating - Zincotec Co., Ltd.Onplus
◈ About Zincotec Co., Ltd.
All products manufactured by Zincotec are water soluble, non-flammable and environmentally friendly. Zincotec products also meet any and all safety standards and codes related to the harmfulness against the human body and create a safe and comfortable work environment with convenient handling and low odor, a significant difference when compared with solvent based products.
For more information, visit our website !
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Refractory Concepts for Chemically and Mechanically Highly Stressed Industria...Refratechnik Group
Nowadays, topics such as recycling, waste disposal, energy recuperation, and energy balance are gaining in importance. Hereby, refractory materials can make decisive contributions. As a systems supplier, Refratechnik develops and manufactures refractory concepts for specific processing technologies to achieve optimum plant efficiency.
(http://www.rivieraglass.co.in) We are one of the topmost manufacturers, suppliers, distributors, importers and exporters of Laboratory Glassware & Equipment. Owing to their clear view, precise volume and light weight properties, our laboratory glassware range is much demanded.
Intelligent Refractory Technology for the Aluminium Industry. Casthouse. Refratechnik Group
High-performance products and intelligent refractory concepts.
Refratechnik is one of the most important companies in the refractory industry and, with its shaped and unshaped products, a global partner of the cement, steel and aluminium industry.
Monolithic products, soon to include pre-shaped products (bricks and prefabricated components), are playing an increasingly important part in Refratechnik's service spectrum, enjoying a notable increase in sales and commanding the highest of respect on the market.
Refratechnik Casting develops, produces, and supplies highgrade process materials for steel production.
The Casting experts have 25 years of experience in the production
and application of biogenic silicas. This know-how has helped put
Refratechnik Casting into a commanding position.
die and die materials are important in fixed partial dentures, to get the accuracy. this seminar describes die materials, its ideal requirements, and various die systems available.
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Various NEMA electrical enclosures are available based on the kind of protection required. In this PPT you will find how to select the right electrical enclosure
2. CONTENT
CRYTUR PROFILE
SAPPHIT™ - SAPPHIRE TEMPERED
SAPPHIT™ vs. ALUMINA CERAMICS
SAPPHIT™ FOR TEMPERATURE MEASSUREMENT
SAPPHIT™ HEATING ELEMENTS
SAPPHIT™ FOR MATERIAL ANALYSES
SAPPHIT™ FOR STRUCTURAL ANALYSES
SAPPHIT™ MATERIAL PROPERTIES DATA
3. CRYTUR – The Reliable
supplier
Crytur is one of the world leading companies in synthetic crystal
manufacturing and processing. With tradition reaching back to 1943,
Crytur is the manufacturer with long term expertise.
Crytur operates a modern 3850sqm facility where it uses sophisticated
proprietary crystal growing technologies and precise machining to meet
the highest production standards.
4. CRYTUR – The Reliable
supplier
Crytur‘s highly qualified engineers deliver tailored client oriented
solutions based on careful analyses of the clients needs.
Apart from its own research, Crytur and also closely cooperates with
science institutes and universities to introduce innovative solutions.
All crystal product undergo a very strict output examination and only
products perfectly matching the clients specification leave the company.
The company is
ISO 9001:2009 certified
5. - Sapphire Tempered
Natural saphire is known as a valued blue gemstone. The
blue color is caused by the presence of Ti and Fe or other
defects in the aluminium oxide matrix.
Natural sapphire
Synthetic sapphire is, on the contrary, extremely pure and
defect-free aluminium oxide single crystal.
Sapphire boule
6. - Sapphire Tempered
Sapphit™ - the true jewel of industrial and
scientific instruments
Sapphit™ is a single crystal of Al2O3 that is
forced to crystalize into the desired shape/profile
by Crytur‘s proprietary and patented technology.
Sapphit™ is the result of the state-of-the-art
manufacturing process involving material
tempering, which minimizes any inner tension
and guarantees perfect material homogeneity.
Sapphire crystallization
7. - Key characteristics
Single crystal
Thermal resistance - melting point 2053°C
High thermal conductivity
Enormous pressure resistance
Hardness - Mohs 9
Pure Al2O3
Transparent, UV to IR transmitive
Outstanding chemical resistance
High strenght
Electrical resistivity
100% Gas-tight
Bio compatibility
* for exact values see the technical data sheet at the end of presentation
8. vs. Sintered ceramic
Alumina ceramics – sintered
microscopic grains of Al2O3
Sapphit™ - single Al2O3
crystal
Sapphit™ structure is perfectly
homogenous with molecules
arranged into a perfect crystal
lattice throuhout the whole
product leaving no weak points
to be attacked.
Magnification 560x
Ceramic materials compose of
microscopic grains. Grain
boundaries represent structural
weak points and source of impurity
due to the residue of sintering
material.
Magnification 560x
9. vs. Sintered ceramic
Even high purity translucent ceramic
show more than 100x more impurities
in chemical analyses!
Comparison based on material analyses of Sapphit™ and
composition data by different manufacturers of sintered ceramics.
100x less impurities
Not only by structure but also by
chemical purity is Sapphit™ a far
superior product to alumina ceramic.
10. vs. Sintered ceramic
Sapphit™ exceeds the performance of sintered alumina ceramics in many parameters.
SAPPHIT™
Corrosion resistence
Perfect
No signs od corrosion after 2 years in the
corrosive environment
Shape stability
Durability
Perfect
No changes in shape until reaching the metling
point
High
Hardness just below diamond guarantees that
the material is not weared
Temperature resistence
Gas tightness
Up to 2000°C (3632°F)
100% gas-tight, very
high pressure resistance
Ceramics
Low
Destroyed after 5 month in the same
environment
Limited
High temperatures may
cause deformation
Limited
Some corrosive oxides can even penetrate
through the sintered ceramics.
Up to 1800°C (3272°F)
Limited and
dependable on
manufacturer/model
11. FOR TEMPERATURE
MEASUREMENT
Sapphit™ is the material of choice for the protective casing of
thermocouple probes.
For its material characteristics Sapphit™ protective sheaths present an
efficient alternative or combination to commonly used materials - large
variety of corundum ceramics or platinum coated sheaths
To ceramics, Sapphit™ is a far
more durable product
Patented solution – Patent No.
CZ302212 (2006)
12. FOR TEMPERATURE
MEASUREMENT
Benefits of of Sapphit™ protective sheaths
Outstanding physical properties - high temperature and pressure resistance
together with perfect chemical stability delivers the best performance in heavy
duty operations
Longer service life – compared to sintered ceramics, Sapphit™ casings survive
much longer in identical conditions
Handling comfort – no extra handling once mounted, long service of Sapphit™
termocouples reduces handling to minimum
Higher safety – low manipulation frequency also significantly decreases the risk of
injuries in production processes with intensive heat environments.
Less shutdowns – longer service life of Sapphit™ casings leads to a reduced
amount of process shutdowns due to thermocouple malfunction, in some processes
Sapphit™ thermocouples outlast the service life of the device in which they are
mounted
13. FOR TEMPERATURE
MEASUREMENT
Sapphire thermocouples deliver the best performance
in harsh processes:
•
•
•
•
•
•
•
•
•
Concentrated or boiling mineral acids
Reactive oxides at high temperatures
Ammonia synthesis
Claus process
Gasification
Desulphurization
NOx removal
Flying ash attachments
Floating non-metal melts
19. FOR TEMPERATURE
MEASUREMENT
Thermocouple components
Our long term experience and cooperation with
partners throughout different industrial segments
result in a wide range of Sapphit™ thermocouple
components specific to the application conditions.
Pre-sales support provided:
•consultancy and careful analyses prior to process
implementation
•product development and testing for specific
applications
20. FOR TEMPERATURE
MEASUREMENT
Custom design
To achieve a reliable and cost effective solution we will help you chose:
•optimium diameter/thickness
•ideal profile combination
•supplemental material combination
Sapphit™ + Metal
Platinum reinforcement in
critical part
Example of reinforced stressed part –
STILL SINGLE CRYSTAL!
Sapphit™ + Ceramics
Probe reinforcement
21. FOR TEMPERATURE
MEASUREMENT
Custom design
Single profile
Profile combination
- for measuring at
differnet levels
Sealed
single
profile
Thickened profile
- reinforced critical
part
Most commonly used thermocouple profile: outer diameter 8 mm, 1,5 mm
thick
- cost/durability compromise proven by experience
1,5 mm
8 mm
22. FOR TEMPERATURE
MEASUREMENT
Custom design – examples of different customized solutions
Gas-tight probe
for measuring
in chemical
industry
Probe for heavy
duty chemical
ractors
Probes for
glass melt
insertion
Waste
gasification
probe
23. FOR TEMPERATURE
MEASUREMENT
Probe durability testing
Moving stream of
lead crystal at
1170°C after 25
month
Glass furnace
at 1250°C for
20 month
Furnace crown at 1500°C for
11 month
26. Heating elements
Furnaces…
Sapphire’s strength, temperature stability, purity and 100% gas-tightness as a single crystal guarantees
that this material can be used as an inert construction material to insulate furnace heated zones at
temperatures as high as 1900 °C. Sapphire tube furnaces can be designed as an ideal cost-effective
solution for reaching high vacuum or to perform annealing in inert, oxidizing or even reducing (hydrogen
containing) atmospheres at high temperatures.
Heaters…
Flexibility and contamination-free operation are yet further advantages of this solution. Its
composition (4N Al2O3) means that it finds applications even in semiconductor manufacture. Most
importantly, sapphire tubes can be easily taken out and if necessary, easily cleaned with strong
oxidizing solutions or, for example, with boiling mineral acids like aqua regia or hydrofluoric acid.
Several sapphire tubes can be employed and exchanged where flexible clean annealing of various
components is required. As such, this solution is also ideal for small laboratory set-ups.
Sapphire can effectively encapsulate any metal or ceramic heating element in such a way that no
contamination occurs, as well as having the heating wire covered with protective atmosphere. The
heating element can be in the shape of a single wire closed within a sapphire tube, or in the form of
a metal spiral in between two sapphire tubes, effectively creating a tube furnace.
Sapphire is and ideal material for protection of heating elements against harsh environment and
extending them life-time. Sapphire tubes can be used up to 1900°C and can keep heating element
under innert or reductive atmosphere. Sapphire allows to enclosure tungsten or molybdenum
heating elements and use them under oxygen. Sapphire is pure Al2O3 (99,995%)
Sapphire tubes are offered in standard diameters from 1,0 mm up to 44 mm with length up to 2 m.
Sapphire’s strength
that this material
temperatures as h
solution for reachin
containing) atmosp
27. Heating elements
Furnaces…
Sapphire’s strength, temperature stability, purity and 100% gas-tightness as a single crystal guarantees
that this material can be used as an inert construction material to insulate furnace heated zones at
temperatures as high as 1900 °C. Sapphire tube furnaces can be designed as an ideal cost-effective
solution for reaching high vacuum or to perform annealing in inert, oxidizing or even reducing (hydrogen
containing) atmospheres at high temperatures.
Heaters…
Flexibility and contamination-free operation are yet further advantages of this solution. Its
composition (4N Al2O3) means that it finds applications even in semiconductor manufacture. Most
importantly, sapphire tubes can be easily taken out and if necessary, easily cleaned with strong
oxidizing solutions or, for example, with boiling mineral acids like aqua regia or hydrofluoric acid.
Several sapphire tubes can be employed and exchanged where flexible clean annealing of various
components is required. As such, this solution is also ideal for small laboratory set-ups.
Sapphire can effectively encapsulate any metal or ceramic heating element in such a way that no
contamination occurs, as well as having the heating wire covered with protective atmosphere. The
heating element can be in the shape of a single wire closed within a sapphire tube, or in the form of
a metal spiral in between two sapphire tubes, effectively creating a tube furnace.
Sapphire is and ideal material for protection of heating elements against harsh environment and
extending them life-time. Sapphire tubes can be used up to 1900°C and can keep heating element
under innert or reductive atmosphere. Sapphire allows to enclosure tungsten or molybdenum
heating elements and use them under oxygen. Sapphire is pure Al2O3 (99,995%)
Sapphire tubes are offered in standard diameters from 1,0 mm up to 44 mm with length up to 2 m.