fully automatic lines for chemical strengthening of glass
TRANSCRIPT
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Fully automatic lines for
chemical strengthening of glass
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Source: Tesla
Source: Mercedes
Source: Tata
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JSJ Jodeit, Jena 1991
(EFR, Glass activities) 2009
(IGM, Tube drawing) 2012
Glamaco, Coswig 2014
(founded in 1957)
JSJ Glass Technology 2018
(Shenyang), China
HISTORY of JSJ-Group
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Principle of chemical strengthening of glass:
Ion exchange in a salt bath at 380°C to 450°C
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gla
ss
salt
before after
Sodium
Oxygen
Silicon
Potassium
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100 80 60 20 20 0 40
TRACTION COMPRESSION Glass
surface
Glass
surface THERMAL TEMPERING
CHEMICAL TEMPERING
Energy
Joules
Glass
Thickness
(mm)
5 m
4 m
3 m
2 m
1 m
Drop ball
(225gr)
0 1 2 3 4 9 5 6 7 8 10
10
8
6
4
2
Characteristics
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Values of CS by
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Double ring bending strength Strength
[Mpa]
Temperature [°C]
Cycle
tim
e [h]
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Values of DOL by
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Layer thickness Layer
thickness [µm] C
ycle
tim
e [h]
Temperature [°C]
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Applications
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• Display and cover glass
• Car interior
• Automotive glazing (light weight)
• High speed trains and cars
• Boats and Yachting
• Military applications
• Security glass and fire protection
doors
• Architectural glass
• Aircraft industry
• Table ware
• Optical glass
Advantage of
chemical strengthening
• High resistance against
mechanical impact
• High resistance against
scratches
• No optical distortion
• Tempering of thin glass possible
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Technological process
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Glass preparation
Rack loading
Preheating
Ion exchange in a salt tank
Cooling
Washing
Drying
Unloading
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Cross section
1. Rack:
carry the glass sheets
clip solution (patent-registered)
2. Preheating / Cooling
chamber:
electric heated oven with
forced air convection
3. Door:
covers the tank and the
chamber
4. Tank:
includes the heating for the
molten salt KNO3
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Tank
Preheating
chamber
Rack
Door
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CHEMICAL STRENGTHENING OF GLASS
Our chemical strengthening lines
are noted for their
• functioning and robustness
• low energy consumption
• high degree of automation
• ease of operation
• low maintenance cost
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Fully automatic batch process
capable for single glass sheets and
small series of glass sheets
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Typical glass sheet size: up to 6m x 3.2m
Tanks are available in several design
sizes.
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Layout: fully automatic lines for mass production in automotive glass
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Typical glass sheet size: up to 2.5m x 1.8m
Tanks are available in 3 design sizes.
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Layout: full automatic lines for mass production
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Loading
of thin glass sheets
into the rack by robot
include tracking of
glass sheets
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Layout: full automatic lines for mass production
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Loading
of thin glass sheets
into the rack by robot
include tracking of
glass sheets
Chemical
strengthening
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Layout: full automatic lines for mass production
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Loading
of thin glass sheets
into the rack by robot
include tracking of
glass sheets
Chemical
strengthening
Washing and drying
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Layout: full automatic lines for mass production
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Loading
of thin glass sheets
into the rack by robot
include tracking of
glass sheets
Chemical
strengthening
Washing and drying
Post-IOX
treatment
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Layout: full automatic lines for mass production
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Loading / unloading
of thin glass sheets
into the rack by robot
include tracking of
glass sheets
Chemical
strengthening
Washing and drying
Post-IOX
treatment
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Robot handling for thin glass application with vision system
Glass thickness: 0.5mm to 1.6mm
Glass size: up to 2200mm x 1600mm
Cycle time: approx. 30 sec/ pc.
Options: de-pairing of glass sheets after bending
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Special clip design
(patented)
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Washing
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Shower tunnel Warm water Deionized water
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Salt handling
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Salt filling Salt drainage valve
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Forecast: Contiuous processing in salt bath
If the demand of automotive glass is increasing strongly then new concepts
are needed. We are ready to supply.
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Research and Development
• continuous processing in salt bath
• salt regeneration
• spray coating
new technology for mass production
• Test facilities for chemical strengthening
are available
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TECHNICAL CENTER in JSJ and GLAMACO
• Glass melting services
• Glass production on customer request
• Test facilities for chemical strengthening
• Tempering test facility
• Laser cutting test station LHC, LCC for table ware
• Laser supported bending
test facility
• Melting tests and raw material assessments
• Melting technology investigations
• Measurement of physical properties of glass melts
(el. conductivity, viscosity)
• Corrosion tests (refractory and electrode materials)
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Business Partner:
JSJ Jodeit GmbH
Am Nasstal 10
07751 Jena / Germany
Phone: +49 3641 6229-20
E-Mail: [email protected]
Internet: www.jsj.de
GLAMACO
DRESDEN / COSWIG
GERMANY
Berlin
GLAMACO GmbH
Prasseweg 1
01640 Coswig / Germany
Phone: +49 3523 646-00
E-Mail: [email protected]
Internet: www.glamaco.com
THANK YOU FOR YOUR ATTENTION.
See you at German Pavillion stand C43