Improvement of the dynamic thermocouple method

1980 ◽  
Vol 38 (2) ◽  
pp. 161-164
Author(s):  
S. P. Polyakov ◽  
G. A. Pozdeev
Keyword(s):  
Dynamic Thermocouple ◽  
Thermocouple Method

Surface Temperature and Scoring Resistance of Heavy-Duty Gears

1974 ◽  
Vol 96 (2) ◽  
pp. 385-390 ◽  
Author(s):  
Jiro Ishikawa ◽  
Kunikazu Hayashi ◽  
Masaaki Yokoyama
Keyword(s):  
Surface Temperature ◽  
Spur Gear ◽  
Heavy Duty ◽  
Gear Teeth ◽  
Dynamic Thermocouple ◽  
Thermocouple Method ◽  
Scoring Resistance ◽  
Experimental Equation

The surface temperature on spur gear teeth is measured by the newly developed dynamic thermocouple method. From a large number of the results an experimental equation for the surface temperature is obtained. The effect of tip relief on the surface tempera-perature rise is also studied.

On Temperature Transients at Sliding Interface

1969 ◽  
Vol 91 (3) ◽  
pp. 397-405 ◽  
Author(s):  
F. F. Ling
Keyword(s):  
Experimental Investigation ◽  
Theoretical Model ◽  
Stochastic Model ◽  
Sliding Contact ◽  
Interface Temperature ◽  
Temperature Level ◽  
Dynamic Thermocouple ◽  
Thermocouple Method ◽  
Two Temperatures ◽  
Simple Stochastic Model

A simple stochastic model of interface temperature of solids in sliding contact, introduced earlier, has been extended. An experimental investigation has also been carried out, the result of which seems to lend credence to the theoretical model. The model led to the observation that, statistically, there are two temperatures at the interface, both being transients. The first is the average over the geometric contact area at all times, the temperature that is most likely to be measured by dynamic thermocouple method. The second is the time and space average over the instantaneous contacts. It is suggested that, as often as not, it is the latter which should be the reference temperature level upon which activities at the interface depend.

Power Loss of Spur Gear Drive Lubricated With Traction Oil

2003 ◽  
Author(s):  
Kiyotaka Ikejo ◽  
Kazuteru Nagamura
Keyword(s):  
Surface Temperature ◽  
Electrical Resistance ◽  
Power Loss ◽  
Gear Tooth ◽  
Spur Gear ◽  
Resistance Method ◽  
Gear Drive ◽  
Dynamic Thermocouple ◽  
Thermocouple Method ◽  
Lubrication Condition

This paper describes the effect of traction oil on the power loss of spur gear drive. In this study, we measured the power loss of super gear drive using several traction oils. We separated the power loss into gear friction loss and oil churning loss. Furthermore, we measured the surface temperature on the gear tooth by the dynamic thermocouple method, and observed the lubrication condition between meshing teeth by the electrical resistance method. Then, we investigated the relationships between the power loss of the gear drive lubricated with the traction oil, the surface temperature on the gear tooth, and the lubrication condition.

Improvement of the Thermocouple Method for Testing Energy-Intensive Emulsions for Compatibility with the Sulfide Ores

2021 ◽  
pp. 58-63
Author(s):  
N.I. Akinin ◽  
◽  
A.S. Garmashov ◽  
V.V. Rudomazin ◽  
◽  
...  
Keyword(s):  
Ammonium Nitrate ◽  
Testing Temperature ◽  
Point Of View ◽  
Spontaneous Ignition ◽  
Sulfide Ores ◽  
Chemical Compatibility ◽  
Emulsion Explosives ◽  
Safety Testing ◽  
Sulphide Ores ◽  
Thermocouple Method

The results are presented concerning improving the thermostatic method for studying the chemical compatibility of modern industrial emulsion explosives based on the ammonium nitrate with surrounding materials, the increased reactivity of which can lead to spontaneous ignition and even explosion. An assessment of the compatibility of emulsion explosives with sulphide ores was conducted using an original thermocouple methodology developed at the D. Mendeleyev University of Chemical Technology of Russia, fixation of the thermal effects of the interaction of shell-free explosives based on the ammonium nitrate with sulfide minerals. Improved thermocouple method allows to determine chemical compatibility of the industrial explosives with the reactive rocks. It is distinguished by the possibility of continuous recording of the thermocouple measurements during tests using an oscilloscope and combines the reliability of the results with small laboratory weights of the test samples (no more than 20 g, which ensures safety testing). Temperature measurement accuracy is ± 2 °С. It is concluded that the method used is able to identify the cases of the most dangerous interaction from the practice point of view using the emulsion explosives when the pyrite content in the ore exceeds 85 %. The results of experiments on the applicability of thermocouple measurements to testing low-activity rocks, highly reactive pyrite ores, mixed sulfide ores of medium activity, as well as on the identification of the main regularities of heat release during the interaction of emulsion explosives with the sulfide ores are considered.

Moving dynamic thermocouple

1983 ◽  
Vol 45 (1) ◽  
pp. 801-806
Author(s):  
S. P. Polyakov
Keyword(s):  
Dynamic Thermocouple

Influence of Tool Holder Material on Interfacial, Insert and Tool Holder Temperatures During Turning Operation of Gray Iron

2012 ◽  
Author(s):  
Almir K. Kaminise ◽  
Gilmar Guimaraes ◽  
Marcio B. Da Silva
Keyword(s):  
Temperature Distribution ◽  
Carbon Steel ◽  
Cutting Tool ◽  
Gray Iron ◽  
Cutting Fluid ◽  
Interface Temperature ◽  
Turning Operation ◽  
Tool Holder ◽  
Cutting Insert ◽  
Thermocouple Method

Usually studies related to machining temperature consider a system comprised of workpiece, chip and cutting tool, the effect of tool holder material is not taken in account. However, due to its physical properties, the tool holder material, usually carbon steel, has effect in the dissipation of the heat generated. This work studies the effect of the tool holder material on the temperature distribution during the turning operation of gray iron using cemented carbide cutting tool and without cutting fluid. Five tool holders were manufactured from materials with different heat conductivity: carbon steel, stainless steel, titanium, copper and bronze. Temperatures in eight different positions in the tool holder and cutting insert were measured. The average temperature at the chip tool interface was also measured using the tool-work thermocouple method. The results showed that the measured chip tool interface temperature was less affected by the tool holder material, although the temperature distribution at the cutting tool is highly affected.

Experimental Temperature Studies on Two Dimensional Ultrasonic Vibration Grinding the Nano-ZrO2 Ceramics

2009 ◽  
Vol 416 ◽  
pp. 540-545
Author(s):  
Ping Yan Bian ◽  
Bo Zhao ◽  
Yu Li
Keyword(s):  
Surface Temperature ◽  
Ultrasonic Vibration ◽  
High Surface ◽  
Grinding Wheel ◽  
Grinding Temperature ◽  
Two Dimensional ◽  
Workpiece Surface ◽  
Grinding Parameters ◽  
Thermocouple Method ◽  
The Relationship

In processing of engineering ceramics materials with diamond grinding wheel, grinding heat is one of vital factors influencing workpiece surface quality. Grinding parameters have important influences on workpiece surface temperature distributions. Contrast experiments on grinding temperature of nanoZrO2 under common and two dimensional ultrasonic vibration grinding(TDUVG) were carried out in this paper by manual thermocouple method. The relationship between grinding parameters and grinding temperature was clarified through theoretical analysis and experiment confirmation. The research results show that with the increases of grinding depth, grinding speed, and decrease of working table speed, the workpiece’s surface temperature would heighten accordingly. Furthermore, comparing with high surface layer temperature in common grinding, which often results in grinding burn, TDUVG can reduce grinding temperature effectively.

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