Results 11 to 20 of about 22,871 (266)

TRIBOLOGICAL CONSIDERATIONS ON RWL 34 TOOLS STEEL [PDF]

open access: yesProceedings on Engineering Sciences, 2019
The paper presents an analyze of the tribological testing on the RWL 34 tools steels in diffrent stages: untreated, hardened and hardened and tempered. The wear tests were made by ball on disk, which is an oscilating sliding method.
Mihai DEMIAN   +2 more
doaj   +1 more source

Effect of Hollow Body Material on Mechanical Properties of Bubble Concrete

open access: yesCrystals, 2022
The bubble concrete (BC) produced by mixing high-strength hollow bodies into concrete has been proven to be effective in reducing density while maintaining strength.
Xiangdong Yan   +4 more
doaj   +1 more source

Preparation and evaluation of gypsum plaster composited with copper smelter slag

open access: yesCleaner Engineering and Technology, 2021
Copper smelter slag is a by-product of copper production at smelters. In this paper, the slag was combined with gypsum, and the physical properties and functionalities of the resulting composites were evaluated to explore new uses for copper smelter slag.
Masahide Hagiri, Kazufumi Honda
doaj   +1 more source

Characterization of cement composites based on recycled cellulosic waste paper fibres

open access: yesOpen Engineering, 2018
Nowadays, there is paying an attention to the utilization of natural, renewable and biodegradable resources of raw materials of lignocellulosic character, residues from agricultural crops and wood processing as well as waste from papermaking industry in ...
Stevulova Nadezda   +4 more
doaj   +1 more source

Comparison of Different Aerogel Granules for Use as Aggregate in Concrete

open access: yesGels, 2023
In previous work of this group, a structural lightweight concrete was developed by embedding silica aerogel granules in a high-strength cement matrix.
Torsten Welsch   +4 more
doaj   +1 more source

B-Scan Imaging and 3D Visualization of Hardened Layer Depth Profile in Linear Guide Rails Based on Ultrasonic Shear Wave Backscattering Technique

open access: yesAcoustics
In order to measure the depth profile of the heat-treated case-hardened layer of linear guides, this paper proposes a B-scan imaging and 3D visualization method for detecting the depth profile of the case-hardened layer of linear guides based on the ...
Peiqiang Chen   +3 more
doaj   +1 more source

Theoretical Studies of Laws Nanostructuring and Heterogeneous Hardening of Steel Samples by Wave Intensive Plastic Deformation [PDF]

open access: yesЖурнал нано- та електронної фізики, 2015
Theoretical studies and calculations, allowing to define the required parameters of the wave deformation hardening, are performed in order to obtain heterogeneous hardened surface layer in steel samples.
A.V. Kirichek   +3 more
doaj  

Geometrical shape improvement of steel moulds by robot polishing process for polymer optic replication

open access: yesProduction and Manufacturing Research: An Open Access Journal, 2018
The quality of injection-moulded polymer optic parts depends on the surface finish of the respective mould. In order to improve the surface finish of the mould, it is important to use a tactical material removal, which allows a controlled correction of ...
Rui Almeida   +4 more
doaj   +1 more source

Influence of laser hardening modes on the properties of 40X13 steel

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2023
We have studied the dependence of the characteristics, strength and plasticity, as well as the microhardness of specimens made of corrosion-resistant steel 40X13 on the modes of laser surface hardening by a fiber laser.
O. M. Mishchiruk   +4 more
doaj   +1 more source

The hardening behaviour of cementitious materials [PDF]

open access: yesMagazine of Concrete Research, 2001
Data from tests on samples of lime-pulverised fuel ash (PFA), lime–gypsum–PFA and cement–PFA mixtures have been analysed. In the case of the lime–PFA mixture, three phases of strength gain were identified, as follows. Phase 1—a rapid initial gain in strength, followed by an induction phase during which little or no strength gain was recorded. After an
M. Y. Abyaneh   +3 more
openaire   +1 more source

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