Contact Systems for Thermoelements with Operating Temperatures up to 1200 K

2021 ◽  
Author(s):  
Maxim Shtern ◽  
Maxim Rogachev ◽  
Yury Shtern ◽  
Alexander Kozlov ◽  
Alexey Sherchenkov ◽  
...  
Keyword(s):  
Operating Temperatures

Optimization of the time the chromatograph thermostats exit to a given temperature

2020 ◽  
pp. 40-45
Author(s):  
Nadezhda O. Vzduleva ◽  
Valery B. Gitlin
Keyword(s):  
Heating Rate ◽  
Entire Range ◽  
Gas Chromatograph ◽  
Heating And Cooling ◽  
Operating Temperatures ◽  
The Stability

The problems of ensuring the stability of the temperature of the chromatographic experiment carried out using a serial gas chromatograph LGH-3000 are considered. Limiting the permissible heating rate of the chromatograph thermostats does not allow a quick transition to the new conditions of the chromatographic experiment in accordance with the requirements of the technical conditions. The processes of heating and cooling the thermostat are analyzed. It is shown that the ratio of the duration of the interval equal to the sum of the durations of the heating and cooling intervals to the duration of the heating interval is inversely proportional to the temperature of the chromatographic experiment. Based on this situation, an empirical algorithm is proposed for heating the thermostat to a given temperature, which made it possible to reduce the time it takes to reach a given temperature in the entire range of operating temperatures.

Truck Tire Operating Temperatures on Flat and Curved Test Surfaces

2005 ◽  
Vol 33 (3) ◽  
pp. 156-178 ◽  
Author(s):  
T. J. LaClair ◽  
C. Zarak
Keyword(s):  
Flat Surface ◽  
Operating Temperature ◽  
Operating Conditions ◽  
Load Pressure ◽  
Truck Tire ◽  
Endurance Testing ◽  
Operating Temperatures ◽  
The Impact ◽  
Tread Rubber ◽  
Cylindrical Test

Abstract Operating temperature is critical to the endurance life of a tire. Fundamental differences between operations of a tire on a flat surface, as experienced in normal highway use, and on a cylindrical test drum may result in a substantially higher tire temperature in the latter case. Nonetheless, cylindrical road wheels are widely used in the industry for tire endurance testing. This paper discusses the important effects of surface curvature on truck tire endurance testing and highlights the impact that curvature has on tire operating temperature. Temperature measurements made during testing on flat and curved surfaces under a range of load, pressure and speed conditions are presented. New tires and re-treaded tires of the same casing construction were evaluated to determine the effect that the tread rubber and pattern have on operating temperatures on the flat and curved test surfaces. The results of this study are used to suggest conditions on a road wheel that provide highway-equivalent operating conditions for truck tire endurance testing.

ALUCHROM O, ALUCHROM I, ALUCHROM S, ALUCHROM W

Alloy Digest ◽  
1992 ◽  
Vol 41 (9) ◽  
Keyword(s):  
Physical Properties ◽  
Tensile Properties ◽  
High Resistance ◽  
Resistance To Oxidation ◽  
Operating Temperatures

Abstract Aluchrom O, Aluchrom I, Aluchrom S and Aluchrom W are ferritic stainless alloys of high resistance to oxidation at high operating temperatures with a range of resistivity values. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. Filing Code: SS-534. Producer or source: VDM Technologies Corporation.

SENECA

Alloy Digest ◽  
1954 ◽  
Vol 3 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Heat Treating ◽  
Type Iv ◽  
Hot Work Steel ◽  
Operating Temperatures ◽  
Red Hardness

Abstract SENECA is a tungsten-chromium type of hot work steel having good red hardness and resistance to abrasion. It will withstand high operating temperatures up to 1000 deg. F for long periods. It is a SAE type IV F-2 alloy. This datasheet provides information on composition and hardness as well as fracture toughness. It also includes information on forming, heat treating, and machining. Filing Code: TS-25. Producer or source: Atlas Steels Company.

NITRODUR 8524

Alloy Digest ◽  
2017 ◽  
Vol 66 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Fatigue Strength ◽  
Tensile Properties ◽  
High Temperatures ◽  
High Surface ◽  
Surface Hardness ◽  
Operating Temperatures

Abstract NITRODUR 8524 (8CrMo16, 1.8524) is one of the Nitrodur family of nitriding steels that are used where high surface hardness and good fatigue strength are required and the material is also subjected to high temperatures. Nitrided surfaces maintain their hardness and strength at operating temperatures of up to approximately 500–550 deg C (932–1022 deg F). This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness. It also includes information on surface qualities as well as casting and forming. Filing Code: SA-807. Producer or source: Schmolz + Bickenbach Group.

FINKL WF-XTRA

Alloy Digest ◽  
2000 ◽  
Vol 49 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Wear Resistance ◽  
Optimum Diameter ◽  
High Production ◽  
Operating Temperatures

Abstract Finkl WF-XTRA has high wear resistance while retaining moderate fracture toughness. The alloy is recommended for larger die blocks. The optimum diameter for hardenability is 838 mm (33 in.). It is appropriate for use in high-production hammers where die temperatures may be above average or in presses with moderately high operating temperatures. This datasheet provides information on composition, microstructure, hardness, and tensile properties as well as fracture toughness. It also includes information on heat treating, machining, and joining. Filing Code: TS-570. Producer or source: A. Finkl & Sons Company.

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