scholarly journals AN ELECTRICAL RESISTANCE FURNACE FOR THE MEASUREMENT OF HIGHER TEMPERATURES WITH THE OPTICAL PYROMETER.

1906 ◽  
Vol 28 (7) ◽  
pp. 846-853 ◽  
Author(s):  
Alexander Lampen
Keyword(s):  
Electrical Resistance ◽  
Optical Pyrometer ◽  
Resistance Furnace ◽  
Electrical Resistance Furnace

A Study on the Temperature Calibration for a Small Electrical Resistance Furnace

2010 ◽  
Author(s):  
Un Bong Baek ◽  
Hae Moo Lee ◽  
Yun-Hee Lee ◽  
Seung Hoon Nahm
Keyword(s):  
Electrical Resistance ◽  
Power Plants ◽  
Low Cycle Fatigue ◽  
Small Scale ◽  
Temperature Calibration ◽  
Cycle Fatigue ◽  
Resistance Furnace ◽  
Small Space ◽  
Start Up ◽  
Electrical Resistance Furnace

A severe thermal stress occurs during start up/shutdown transients in thick walled components of high temperature power plants. Thus, a precise consideration of this issue is very important. Many researchers have studied low-cycle fatigue at high temperatures and small box-type electrical resistance furnaces have been developed for small-sized fatigue specimens. However, these small-scale electrical resistance furnaces need precise temperature calibrations because temperature control is difficult in a small space. Thus, a method for the temperature calibration of a box-type electrical resistance furnace is investigated and calibration procedures are proposed in this study.

Effect of Cryogenic Treatments on Mechanical Properties of 2A11 Aluminum Alloy

2010 ◽  
Vol 146-147 ◽  
pp. 1646-1650 ◽  
Author(s):  
Jun Jie Wang ◽  
Xiao Dai Xue ◽  
Zhen Qiang Yang ◽  
Hong Zhang ◽  
Yuan Zhou
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Electrical Resistance ◽  
Cryogenic Treatment ◽  
Resistance Furnace ◽  
Treatment Processes ◽  
Tensile Tester ◽  
Impact Tester ◽  
Measuring Machine ◽  
Electrical Resistance Furnace

Effect of cryogenic treatments on mechanical properties of 2A11 aluminum alloy were studied. Cryogenic box with program control and electrical resistance furnace were employed to perform cryogenic treatment processes as well as heat treatment processes. Impact tester, tensile tester, three-coordinates measuring machine, high precision caliper and standard metallography were used to carry out tests. The influences of different process parameters on mechanical properties of 2A11 aluminum alloy were compared, and the results showed that cryogenic treatment could improve mechanical properties of 2A11 aluminum alloy. The dimensional stability increases after cryogenic treatment once, and increases further after cryogenic treatment again.

scholarly journals Design and Development of Portable Electrical Resistance Furnace

2021 ◽  
Vol 1065 (1) ◽  
pp. 012016
Author(s):  
Anand K. Hosamani ◽  
Bharat Naik ◽  
Shirish M. Kerur ◽  
Vinayak Ratan ◽  
Chandra Bhushan ◽  
...  
Keyword(s):  
Electrical Resistance ◽  
Resistance Furnace ◽  
Design And Development ◽  
Electrical Resistance Furnace

Oxidation and Melting Characterizations of AZ91D Granules during In Situ Melting

2011 ◽  
Vol 311-313 ◽  
pp. 631-634 ◽  
Author(s):  
Hassan Jafari ◽  
Mohd Hasbullah Idris ◽  
Ali Ourdjini ◽  
Saeed Farahany
Keyword(s):  
Electrical Resistance ◽  
Heating Process ◽  
Resistance Furnace ◽  
X Ray ◽  
Characteristic Temperatures ◽  
Az91d Magnesium Alloy ◽  
Melting Technique ◽  
Different Temperatures ◽  
Electrical Resistance Furnace

In this research, the oxidation and melting behaviour of AZ91D magnesium alloy granules was investigated throughout using in-situ melting technique when the granules were covered by flux. The granules were heated inside an electrical resistance furnace at four different temperatures of 650, 700, 750 and 800 °C for 30 min. Thermal analysis was used to detect the granules characteristic temperatures during the technique. The products of the heating process were examined visually and characterized by scanning electron microscopy and energy dispersive X-ray spectroscopy. The results showed that due to occurrence of severe oxidation and combustion, particularly at 800 °C, a significant amount of the granules transformed to a powdered state. The presence of the mould materials within the oxidation residue was detected indicating that severe mould-magnesium reaction occurred during heating. It was found that the granules melted during the heating process. However, the presence of oxides on the granules prevented them from fusing to form a single melt.

Study on Non-Isothermal Crystallization Kinetic of Tundish Covering Fluxes

2011 ◽  
Vol 266 ◽  
pp. 102-105
Author(s):  
Li Feng Sun ◽  
Hong Po Wang ◽  
Chun Lai Liu ◽  
Yong Zou ◽  
Mao Fa Jiang
Keyword(s):  
Isothermal Crystallization ◽  
Heat Insulation ◽  
Crystallization Kinetic ◽  
Avrami Equation ◽  
Crystallization Time ◽  
Resistance Furnace ◽  
Crystallization Behaviors ◽  
Good Heat ◽  
Casting Production ◽  
Electrical Resistance Furnace

Basic tundish covering flux is widely used in continuous casting production of high quality steel because of good heat insulation function and the properties of absorbing inclusions. However, there is a serious problem of incrustation caused by basic tundish covering flux in process of pouring and it could be dramatically influenced by the crystallization behaviors of covering flux. In the paper, the crystallization time and ratio of basic tundish covering fluxes were investigated by high temperature electrical resistance furnace and single hot thermocouple apparatus. Based on the crystallization kinetic knowledge and experimental results, Avrami equation was modified, the non-isothermal crystallization equation that could quantitatively describe the crystallization behaviors of basic tundish covering fluxes was established.

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