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About 20 years ago the imminent death of the three roll mill was being forecast by many authorities. Their arguments were good. For the previous 50 years the technology of the three roll mill was virtually unchanged and the new sand mills, high speed dissolvers etc, were opening a new dimension to pigment dispersion. It was this that caused roll mill manufacturers, who, up until that time had concentrated on bettering the engineering aspects of their mills to consider how they could improve their customers' products in the various fields of paint, ink, soap, cosmetic and chocolate dispersing. A new era dawned for three roll mills, instead of simply improving their old mills the manufacturers hired dispersion experts. Chemists and technicians from the ink, chocolate and other industries joined the mill manufacturers and it very soon became apparent that many improvements could be made, so much so that leading mill manufacturers set up complete research laboratories separated into the various industries involved. Improvements rapidly followed. One of the first was static hydraulic pressure in place of the mechanical screw system. This soon gave way, on the more expensive mills, to dynamic hydraulic pressure. The difference being that in the latter system a pump is continually operating to maintain a constant pressure on the hydraulic oil and thereby on the rolls. And so was born a three roll mill which for the first time did not need constant re‐adjustment to maintain steady pressure regardless of the temperature when working.

Analyses five major innovations in the flour milling industry and the variations in attitudes and adoption practices in group mills and individual plants. Advocates that it is important for research purposes that an industry is chosen in which technical innovation was high, and also where the total number of units in the country could be approached with regard to the very limited budget available for the research. The industry chosen was the flour milling industry. Discusses the choice of innovations and methodology. Sums up that much work still needs to be done with regard to sources of information and on the role of opinion leaders.

This paper aims to produce hybrid reinforcement for the development of aluminium matrix composites using ball-billing technique to avoid or reduce the problem of agglomeration of the reinforcement during casting.

In the present investigation, a mixture of silicon carbide (SiC) and rice husk ash (RHA) powder in equal weight percentage ratio 4:4 (1:1) was alloyed mechanically in a ball-mill at distinct milling times of 15, 30, 45, 60 and 75 h. Morphological Characterization and density measurements of the ball-milled powder were carried out after different intervals of milling times.

The results revealed that the process of ball milling is a novel technique for the conversion of two or more powders in to an integer powder and reduces the problem of agglomeration also. The density measurement results revealed that an increasing trend of density initially and reduction of the density with the increase of milling time. The density value of the combined particles became comparable to the density of aluminium at the milling time of 75 h for the equal weight percentage ratio 4:4 (1:1) of SiC and RHA.

The manuscript highlights the research work related to the development of the reinforcement for the aluminium hybrid composites by ball milling process. The use of this process for the development of the reinforcement not only reduces the problem of the agglomeration but reduces the density mismatch of the reinforcement and matrix material also.

This work aims to analyze the effect of mechanical activation on structural disordering (amorphization) in an alumina-silica ceramics system and formation of mullite most notably at a lower temperature using X-ray diffraction (XRD). Also, an objective of this work is to focus on a low-temperature fabrication route for the production of mullite powders.

A batch composition of kaolin, alumina and silica was manually pre-milled and then mechanically activated in a ball mill for 30 and 60 min. The activated samples were sintered at 1,150°C for a soaking period of 2 h. Mullite formation was characterized by XRD and scanning electron microscopy (SEM).

It was determined that the mechanical activation increased the quantity of the mullite phase. SEM results revealed that short milling times only helped in mixing of the precursor powders and caused partial agglomeration, while longer milling times, however, resulted in greater agglomeration.

It is noted that, a manual pre-milling of approximately 20 min and a ball milling approach of 60 min milling time can be suggested as the optimum milling time for the temperature decrease succeeded for the production of mullite from the specific stoichiometric batch formed.

Machine may bo defined as a machine tool which removes metal by causing the work, securely held in a vice or fixture, to be fed against a revolving cutting tool, called the milling cutter, having one or more cutting edges—usually several.

The purpose of this study is to reveal the friction reduction performance and mechanism of granular flow lubrication during the milling of difficult-to-machining materials and provide a high-performance lubrication method for the precision cutting of nickel-based alloys.

The milling tests for Inconel 718 superalloy under dry cutting, flood lubrication and granular flow lubrication were carried out, and the milling force and machined surface quality were used to evaluate their friction reduction effect. Furthermore, based on the energy dispersive spectrometer (EDS) spectrums and the topographical features of machined surface, the lubrication mechanism of different granular mediums was explored during granular flow lubrication.

Compared with flood lubrication, the granular flow lubrication had a significant force reduction effect, and the maximum milling force was reduced by about 30%. At the same time, the granular flow lubrication was more conducive to reducing the tool trace size, repressing surface damage and thus achieving better surface quality. The soft particles had better friction reduction performance than the hard particles with the same particle size, and the friction reduction performance of nanoscale hard particles was superior to that of microscale hard particles. The friction reduction mechanism of MoS₂ and WS₂ soft particles is the mending effect and adsorption film effect, whereas that of SiO₂ and Al₂O₃ hard particles is mainly manifested as the rolling and polishing effect.

Granular flow lubrication was applied in the precision milling of Inconel 718 superalloy, and a comparative study was conducted on the friction reduction performance of soft particles (MoS₂, WS₂) and hard particles (SiO₂, Al₂O₃). Based on the EDS spectrums and topographical features of machined surface, the friction reduction mechanism of soft and hard particles was explored.

The view of Karl Marx as “revolutionary” endorsing violent overturn of the capitalist system is standard textbook fare filtering through to popular and professional opinion. John Stuart Mill specialists frequently contrast their subject with Marx in this regard. The perspective on Marx as “revolutionary” is unconvincing, for Marx was no less “evolutionary” than Mill, his version of evolution reflecting concern that reformist measures to correct perceived injustices in the capitalist-exchange system might assure its permanence, and extending to the stage following a proletarian political takeover which might itself occur by way of democratic voting enabled by extensions of the franchise accorded by the capitalist state itself. Our demonstration prefaces a speculative evaluation of Mill’s stance regarding Marx – “speculative” since Mill apparently never read Capital. In particular, Mill would doubtless have welcomed Marx’s position, for to differentiate him from the continental “revolutionaries” makes excellent sense considering his principle that when it comes to prediction all depends on ruling circumstances coupled with his evolutionism including allowance after a proletarian takeover of a residual capitalist sector, income inequality, and compensation of expropriated property owners. By the same token he would have found unpalatable Marx’s vision for a more distant communism of a central-controlled system.