Hardening of agglutinant sands on lignosulphonate
binding agent is the result of two processes: oxidation-reduction in the system lignosulphonate acids — persulfuric
natrium in the early stages of hardening and hydration of
cement in the latter stages.
Новые поступления электронной библиотеки
2023-10-13
There are given the calculations, modifiers of
bindings for the unified foundry sands.
2023-10-13
The comparative analysis of operation
characteristics of cold heading female moulds, produced
from steels P6M5 and X12M, in relation with their
structure and stressed state, is carried out.
2023-10-12
In the article there are analyzed the different ways
of thermal treatment and melting of polydisperse
materials and there are presented the developed by
authors original coaxial-cylinder furnace settings,
allowing to increase considerably the efficiency and
productivity of technological process.
2023-10-12
In the article there is examined the influence of
loading speed, and also of the dynamic parameters of the
hydraulic testing presser and inflexibility of the test sample
on the results of statistic examinations of road fitment on
compression.
2023-10-12
There is shown that using of the compound
connecting system allows to carry out not only receiving
of the stable material but to provide equal distribution
along the whole mixture volume of all components,
forming part of a compound, as well.
2023-10-12
There is given the solution of linked problem of
heat conduction and thermoelasticity at heating of
prismatic substances by radiant convection current,
based on using of the method of equivalent sources.
2023-10-12
For the first time in the theory of counterflow heat
exchange there is solved the problem of heating of the
two-dimensional prismatic slug at its heating by convention
current. There are studied the regularities of dynamics of
the (gas) and metal heat carrier temperatures depending
on different parameters.
2023-10-12
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