scholarly journals Analysis of Deformation of Float Glass with Heat Treatment in Vehicle Windshield Applications

2020 ◽  
Vol 3 (3) ◽  
pp. 126-134
Author(s):  
Eko Julianto ◽  
Sunaryo Sunaryo ◽  
Elkana Bilak Lopo
Keyword(s):  
Heat Treatment ◽  
Glass Surface ◽  
Shape Change ◽  
Float Glass ◽  
Continuous Increase ◽  
Dimensional Changes ◽  
Curved Glass ◽  
Glass Type ◽  
Higher Temperature ◽  
Clear Change

The purpose of this study was to determine the shape change characteristics of float sheet glass using heat treatment experiments on its surface. This involved the use of a float glass type with a thickness of 5 mm, a width of 840 mm, and length of 1350 mm as the test specimen and the heat transfer experiments and treatment were conducted through conduction with the heat distribution recorded to be between 34 °C and 600 °C at every 5 minutes within 60 minutes in a heating furnace. The analysis focused on the characteristics of the glass surface exposed to fire with emphasis placed on the temperature during the deflection changes in the entire glass surface, the dimensional changes at the edges of the glass which follow the glass printing pattern, and the changes in temperature on the upper and lower surfaces of the curved glass mold. The results showed the existence of a very clear change in each temperature or conduction heat when the shape of the glass is changed to curve with the ideal shape observed to have changed at a temperature of 482.50 °C. Moreover, dimensional changes were 1.0427 m2 and the variations in the temperature were 107.55 °C and the continuous increase in the heat was to have led to a faster change in the glass shape by 11.2°. This, therefore, means a higher temperature or room temperature affects the firing rate of glass bending and also increases the rate of heat absorption.

Effect of copper incorporation on phase transformation behavior of electroless nickel–phosphorous coating and its effect on the tribological behavior

2020 ◽  
pp. 146442072098160
Author(s):  
Abhijit Biswas ◽  
Suman Kalyan Das ◽  
Prasanta Sahoo
Keyword(s):  
Heat Treatment ◽  
Phase Transformation ◽  
Tribological Behavior ◽  
Electroless Nickel ◽  
Two Phase ◽  
Microstructural Changes ◽  
Treatment Conditions ◽  
Heat Treated ◽  
Higher Temperature ◽  
Effect Of Copper

The microstructural changes of electroless Ni–P–Cu coating at various heat-treatment conditions are investigated to understand its implications on the tribological behavior of the coating. Coatings are heat-treated at temperatures ranging between 200°C and 800 °C and for 1–4 h duration. Ni–P–Cu coatings exhibit two-phase transformations in the temperature range of 350–450 °C and the resulting microstructural changes are found to significantly affect their thermal stability and tribological attributes. Hardness of the coating doubles when heat-treated at 452 °C, due to the formation of harder Ni3P phase and crystalline NiCu. Better friction and wear performance are also noted upon heat treatment of the coating at the phase transformation regime, particularly at 400 °C. Wear mechanism is characterized by a mixed adhesive cum abrasive wear phenomena. Heat treatment at higher temperature (600 °C and above) and longer duration (4 h) results in grain coarsening phenomenon, which negatively influences the hardness and tribological characteristics of the coating. Besides, diffusion of iron from the ferrous substrate as well as greater oxide formation are noticed when the coating is heat-treated at higher temperatures and for longer durations (4 h).

scholarly journals Designing a Quick Fix Shutter for Auto-Disinfecting Scan Glass Surface in Biometric Scanners

2020 ◽  
Author(s):  
Deepalekshmi Ponnamma ◽  
Mohammad Talal Houkan ◽  
Muni Raj Mourya ◽  
Noora Al-Thani
Keyword(s):  
Infectious Disease ◽  
Heat Treatment ◽  
Glass Surface ◽  
Universal Design ◽  
Professional Life ◽  
Cross Contamination ◽  
Finger Print ◽  
Potential Sources ◽  
Single Use ◽  
Short Time

Fingerprint scanners are significant devices in professional life, and its contamination can be potential sources of COVID-19 transmission. Manual disinfection of the fingerprint scanner after every single use is time consuming and even can adversely affect its electronics/functioning. Thus, with an aim to prevent the spread of infectious disease by cross contamination and implement the safe use of fingerprint scanner, we have developed a smart quick fix technology for automatic disinfection of finger print scanner glass after every single use. The smart portable top mount assembly uses two different disinfecting methods that ensures higher degree of disinfection. The disinfection is based on the simultaneous ultraviolet (UV) and heat treatment for a specific short time, and required to kill all the viruses on the scan glass surface. Moreover, developing this disinfecting technology with a universal design that can be fitted to any finger print scanner irrespective to its size makes it a novel idea.

scholarly journals Fabrication and Performance Evaluation of Thin Film RTD Temperature Sensor Array on a Curved Glass Surface

2011 ◽  
Vol 9 (2) ◽  
pp. 34-39 ◽  
Author(s):  
Chul-Hee Ahn ◽  
Hyoung-Hoon Kim ◽  
Sang-Hu Park ◽  
Chang-Min Son ◽  
Jeung-Sang Go
Keyword(s):  
Thin Film ◽  
Performance Evaluation ◽  
Temperature Sensor ◽  
Glass Surface ◽  
Sensor Array ◽  
Curved Glass ◽  
And Performance

Effect of additional applied thermal/electric field on the float-glass surface

2009 ◽  
Vol 24 (2) ◽  
pp. 308-311 ◽  
Author(s):  
Zuwu Shen ◽  
Qiming Liu ◽  
Li Meng ◽  
Hongcheng Wang
Keyword(s):  
Electric Field ◽  
Glass Surface ◽  
Float Glass

Effect of composition of the tin melt tank atmosphere on microhardness of float glass surface

1999 ◽  
Vol 56 (5-6) ◽  
pp. 170-171
Author(s):  
A. V. Gorokhovskii ◽  
K. N. Matazov ◽  
E. N. Plekhanova ◽  
E. V. German
Keyword(s):  
Glass Surface ◽  
Float Glass

Screening for drugs of abuse: effect of heat-treating urine for safe handling of samples

1990 ◽  
Vol 36 (6) ◽  
pp. 908-910 ◽  
Author(s):  
K Wolff ◽  
M A Shanab ◽  
M J Sanderson ◽  
A W Hay
Keyword(s):  
Heat Treatment ◽  
Human Immunodeficiency Virus ◽  
Drugs Of Abuse ◽  
Heat Treating ◽  
Immunodeficiency Virus ◽  
Aids Virus ◽  
Risk Patients ◽  
Higher Temperature ◽  
Abused Drugs ◽  
The Stability

Abstract Heating urine samples from high-risk patients for 1 h at 56 degrees C is no longer believed to completely inactivate human immunodeficiency virus (HIV; AIDS virus). To protect staff who are handling infectious samples such as those from drug-addiction units, heating at a higher temperature may be necessary. We report the stability to heat treatment (at 60, 70, and 100 degrees C) at pH 5.1 and 7.6 of some commonly abused drugs, namely, methadone, pethidine, amphetamine, the cocaine metabolite, benzoylecgonine, and the dextropropoxyphene metabolite nordextropropoxyphene. Heat-treating urine at 60 degrees C for 1.5 h or 70 degrees C for 1 h did not significantly affect the measured concentrations of these drugs. However, heat treatment at 100 degrees C for 1 h reduced the recovery of all the drugs. Benzoylecgonine and amphetamine were most susceptible to the different forms of heat treatment.

532 nm Nanosecond laser cutting solar float glass: Surface quality evaluation with different laser spot positions in field lens

Optik ◽  
2020 ◽  
Vol 223 ◽  
pp. 165620
Author(s):  
Haoyu Dong ◽  
Yu Huang ◽  
Youmin Rong ◽  
Chunmeng Chen ◽  
Wenyuan Li ◽  
...  
Keyword(s):  
Surface Quality ◽  
Glass Surface ◽  
Laser Cutting ◽  
Quality Evaluation ◽  
Float Glass ◽  
Laser Spot ◽  
Nanosecond Laser ◽  
532 Nm

Preparation of Butadiene

1928 ◽  
Vol 1 (2) ◽  
pp. 208-210
Author(s):  
Stanley Francis Birch
Keyword(s):  
Heat Treatment ◽  
High Temperature ◽  
Liquid Phase ◽  
High Temperatures ◽  
Vapor Phase ◽  
Complex Mixture ◽  
Higher Temperature ◽  
Oil Gas

Abstract OF THE numerous methods available for the preparation of butadiene in the laboratory, those described by Thiele and by Ostromuislenskii are probably the most convenient. Both, however, suffer from the disadvantages which usually characterize operations at comparatively high temperatures; the exact conditions are difficult to find, the process is long and tedious, and finally involves the separation of the required material from a complex mixture. It has long been known that butadiene occurs in the various products obtained when oils are heated to a high temperature. Caventou first isolated butadiene in the form of its tetrabromide from illuminating gas, and Armstrong and Miller definitely established the presence of butadiene in the liquid obtained by compressing oil gas. The work of numerous later investigators has confirmed their results and has shown that the more drastic the heat treatment to which the oil is submitted the greater is the tendency for butadiene to be formed. For this reason vapor-phase cracking of petroleum, which is carried out at a much higher temperature than liquid-phase cracking, yields products specially rich in butadiene.

Sign in / Sign up

Export Citation Format

Share Document