Search results

The anode bulk density which has a closely relation with porosity, oxidation resistance, resistivity, thermal conductivity and mechanical property.
High density laboratory-scale carbon anodes were produced by a new method of high-temperature mould pressing, and their physico-chemical properties were studied.
The carbon brick had a very good quality with high density, low porosity and permeability, high thermal conductivity and excellent mechanical property.
Kneading temperature is one of the main factors affecting kneading process.
Table 1 gives the results and physical properties of industrial prebaked carbon anodes.

The effect of the factors and the interation between them upon the increase of interstitials was determined using a 33 factorial design with two replicates [11].
Factors and levels Factor Levels -1 0 1 2.4 Milling time (M) [h] 1 6 - 18 Sintering temperature (T) [ºC] 1000 1200 1400 - Holding time (H) [h] 1 3 5 - Results Table 2 shows the design matrix with the average results of the response variables O, N and C.
The significant factors were identified by the F test performed for a confidence interval of 95 %.
Other factors and interactions had negligible or no effects in the process.
During sintering at temperatures above 1000 ºC this oxygen is dissolved into solution thus affecting mechanical properties of the final parts (yield, strength, ductility, fatigue, hardness, etc.) [10].

Domestic and overseas studies have shown that the gradation and asphalt are two key factors for asphalt mixture.
Material property Basic properties of raw materials The experiment uses 90# asphalt, the results of each test index is shown in Table 1, all meet specification requirements.
Fig1 Graph of grading curve Performance-related properties of asphalt mixture Preparation of specimens Mix design employed the Superpave analysis system to determine the optimum asphalt content.
Table 4 Passing percentage of three types graded asphalt mixture Type of gradation Passing percentage of sieve ,% 25 19 13.2 9.5 4.75 2.36 1.18 0.6 0.3 0.15 0.075 AG 100 95 80 68 45 36 29 22 15 9 4 ZG 100 95 80 68 45 35 25 19 14 9 4 BG 100 95 80 68 45 29 19 14 11 9 4 High-temperature stability of asphalt mixture Asphalt mixture is a kind of viscoelastic material, physical and mechanical properties are closely related to the temperature and loading time.
Table 5 Summary of rutting test results Type of gradation Dynamic stability, times/mm Rut depth in 45 minutes, mm Rut depth in 60 minutes, mm Relative deformation,% AG 2072 2.932 3.254 6.5 ZG 1457 4.943 5.409 10.8 BG 2704 3.071 3.333 6.7 Many factors affect the high temperature stability of asphalt mixture; mainly include varieties and properties of asphalt, asphalt content, aggregate particle shape, aggregate gradation, voids, traffic volume and temperature etc.

In many cases, it’s only possible to use a certain portion of the recycled material, which depends on numerous factors, mostly on the type of processing.
Before the use of the concrete, the factors of fraction, impact on load-bearing values, water absorption and icing must be taken in mind.
The key elements of the decision-making process for the use of recycled materials include the properties and the possibilities of recycling.
Waste has different properties and the recycling differs as well.
All these factors must be considered when deciding on the use of recycled material.

Introduction In processes of fusion welding the crystal structure of metal in the welding bead is one of the major factors influencing the quality and properties of the welding joint.
Mechanical properties of the weld joint can be improved [4] by introducing high-melting particles to the molten metal which increases the number of induced crystallization centers reducing the grain size during hardening [1, 2].
It has been known that one of the most important applications of WEE powders is modification of material properties.
The structure of the melting border and the arc heat-affected zone, A - Sample 1, B – Sample 2, C – Sample 3 The heat-affected zone in the samples cannot be precisely identified but it has a similar width for all the samples.
The influence of nanodispersed WC and nickel carbides on the structure and properties of deposited metal, Welding and diagnostics (Rus.

The factorial portion of CCD is a full factorial design with all combinations of the factors at two levels (high, +1 and low, -1) and composed of the eight star points, and six central points (coded level 0) which is the midpoint between the high and low levels.
In the present study, the processing parameters affecting the magnetic abrasive material loss rate (MALR) and surface roughness (Ra) such as abrasive size (), spindle speed (), tool and workpiece gap () and feed speed () were considered for experimentation and analysis.
Table 2 shows the identified factors and their levels which the experimental matrix that was adopted in this study in both coded and actual factors.
This means that regression model provides an excellent explanation of the relationship between the factors and the response of magnetic abrasive loss rate.
This means that regression model provides an excellent explanation of the relationship between the factors and the response of Ra.

The chemical and physical composition and mechanical properties of the hard slate of WCo8 grade are presented in Table 1.
Composition and physical and mechanical properties of hard alloy, grade WCo8.
[4] Zhixing Guo, Ji Xiong, Mei Yang, Cijin Jiang, WC–TiC–Ni cemented carbide with enhanced properties, J.
[6] V.S.Panov, Technology and properties of sintered hard alloys and their products, М., MISIS, Moscow, 2001
Zaytsev, Improved mechanical and tribological properties of metal-matrix composites dispersion-strengthened by nanoparticles, Materials. 3 (2010) 97–109

Secondly, from the position of regulating their properties [2, 4, 6].
Enrichment allows you to purposefully form the properties of building compositions - cement, concrete, ceramic, silicate.
Studies of the dependence of the properties of the modified cement stone with the ash product were carried out using a two-factor experiment (tabl. 4).
The introduction of an aluminosilicate ash product affects the physical and mechanical properties of the modified cement stone not only in terms of its mechanical role.
Abdelgader, Palm Oil Fuel Ash-Based Eco-Efficient Concrete: A Critical Review of the Short-Term Properties, MDPI 14(2) (2021) 332

And compound the insulation properties of materials to the exterior wall outside is called Exterior wall insulation.
XPS board exterior insulation system.XPS board system instead of EPS board system has low thermal conductivity, good insulation properties, but the XPS plate surface adhesion and permeability should be further studied. 3.
Big deviation of dual distribution ratio affects the product quality.
These relate to slurry’s rheological properties, construction people’s correct operation and the overall balance of skills and experience.
The quality of the construction organization directly affects project progress and quality.

In addition, due to limitations in computing power as well as the complexity of temperature dependent material properties, several assumptions were required to allow for the FE model to converge.
The strain gauges were placed on the side arm and middle arm (see Figure 1) to determine how the varying wall thickness would affect the development of residual strain.
Although the results presented in the current study and in [18] provide valuable data regarding stress development in castings, the studies are limited by the precision of the applied techniques (i.e. strain gauges and thermal imaging) as well as the accuracy of the temperature dependent material properties.
Dong, Influence of quenching cooling rate on residual stress and tensile properties of 2A14 aluminum alloy forgings, Materials Science & Engineering A, 674 (2016) 658-665 [20] J.
Byczynski, The effects of solidification cooling rates on the mechanical properties of an aluminum inline-6 engine block, Light Metals Aluminum Alloys, Processing and Characterization - Microstructures and Mechanical Properties of Aluminum Alloys, (2019) 505–512