Heats of mixing and contact interaction of hydrocarbons with n-alkyl acetates

1981 ◽  
Vol 85 (9) ◽  
pp. 1261-1264 ◽  
Author(s):  
D. D. Deshpande ◽  
C. S. Prabhu
Keyword(s):  
Contact Interaction ◽  
Heats Of Mixing ◽  
Alkyl Acetates

INVESTIGATION OF DEPENDENCE IMPACT OF TOOL GEOMETRICAL PARAMETERS AND CUTTING SPEED UPON SHAPING EFFORT AT HELICAL GROOVE CUTTING ON INTERNAL SURFACE OF CYLINDRICAL SHELL

2020 ◽  
Vol 2020 (10) ◽  
pp. 22-28
Author(s):  
Vadim Kuc ◽  
Dmitriy Gridin
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Cylindrical Shell ◽  
Contact Interaction ◽  
Cutting Speed ◽  
Internal Surface ◽  
Geometrical Parameters ◽  
Software Complex ◽  
Helical Groove ◽  
Groove Cutting

The work purpose was the investigation of dependence impact of tool geometrical parameters upon shaping effort during internal groove cutting. As a realization for the fulfillment of the helical groove processing investigation there was used a software complex based on a finite element method and a computer mathematic system. As a result of the investigations carried out there was obtained a regression equation manifesting the dependence of factors impact upon axial force falling on one tooth of the tool in the set scale of factor parameters. The scientific novelty consists in that in the paper there is considered a new method for helical groove cutting in which a shaping motion is carried out at the expense of the contact interaction of a tool and a billet performing free cutting. The investigation results obtained allowed determining the number of teeth operating simultaneously, that can be used further at cutting mode setting, and also as recommendations during designing tool design.

Improving the service life of coatings during running-in

2019 ◽  
pp. 58-64
Author(s):  
I. R. Aslanyan
Keyword(s):  
Mathematical Modeling ◽  
Service Life ◽  
Contact Interaction ◽  
Phosphate Coatings ◽  
The Way

In work researches of phosphate coatings are conducted. By means of methods of mathematical modeling of contact interaction it is established that on wear of phosphate coatings the greatest influence renders their roughness. For decrease in wear of the running-in coverings applied to protection of steel products, the way on increase in service life of phosphate coatings is offered.

Heats of mixing of butanone and chloroform with alkanes: Ternary systems

1978 ◽  
Vol 43 (3) ◽  
pp. 837-847 ◽  
Author(s):  
Julius Pouchlý ◽  
Antonín Živný ◽  
Ján Biroš
Keyword(s):  
Ternary Systems ◽  
Heats Of Mixing

Heats of mixing of butanone and chloroform with alkanes: Binary systems

1978 ◽  
Vol 43 (3) ◽  
pp. 829-836 ◽  
Author(s):  
Ján Biroš ◽  
Antonín Živný ◽  
Julius Pouchlý
Keyword(s):  
Binary Systems ◽  
Heats Of Mixing

Interpretation of heats of mixing of 1-butanol, 2-butanol and 2-methyl-2-propanol with cyclohexane in terms of some models of continuously associated solution

1984 ◽  
Vol 49 (6) ◽  
pp. 1334-1341 ◽  
Author(s):  
František Veselý ◽  
Vladimír Dohnal ◽  
Miriam Valentová ◽  
Jiří Pick
Keyword(s):  
Temperature Dependence ◽  
Interaction Parameters ◽  
Heats Of Mixing ◽  
Linear Association ◽  
Two Systems ◽  
Associated Solution

Three models of continuously associated solution complemented by an assumption of polynomial temperature dependence of corresponding interaction parameters were used for simultaneous description of the concentration and temperature dependence of heats of mixing of 1-butanol, 2-butanol and 2-methyl-2-propanol with cyclohexane. Very good results were reached for the first two systems where the Liebermann and Wilhelm model has proved to be the most suitable. With respect to the probable existence of cyclic associates in solutions of 2-methyl-2-propanol, none of the used models which assume only linear association satisfied to the extent required.

Sign in / Sign up

Export Citation Format

Share Document