Obtaining environmentally friendly cable PVC composites

Polyvinyl chloride compositions are very popular in the cable industry. The range of domestic fireproof cable PVC plastics is limited to several manufactured brands that were developed more than 30 years ago and do not meet modern international standards. The creation of new environmentally friendly formulations of fireproof cable plastics with improved operational properties is an urgent task. This paper describes a method of synthesizing a novel ester compound of phenyl dixylenyl phosphate. The conditions for its production with maximum yield are selected. Physicochemical properties of the new flame retardant are studied. A non-toxic biodegradable PVC composition based on a plasticizer of dibutoxyethyl adipate and a novel flame retardant is formulated. The results of tests of the developed PVC-composite on the main indicators for cable products of the I40-13 brand are presented.

An Integrated Fuzzy Goal Programming—Theory of Constraints Model for Production Planning and Optimization

Manufacturing companies are under constant pressure to optimize the economic sustainability of their production systems. Production planning and optimization is a well-established strategy for considering resource constraints and improving economic productivity. This study proposes an integrated fuzzy goal planning and the theory of constraints for production planning and optimization. To this end, a hybrid Delphi–Buckley method was used to identify the relevant goals and a paired matrix questionnaire was used to determine the fuzzy weights of the goals. Furthermore, a fuzzy bottleneck detection algorithm was used to deal with the bottlenecks. A case study in the cable industry is presented to demonstrate the applicability and exhibit the efficiency of the proposed model. The results indicate that production planning in the cable industry could experience less deviation, almost 11% less, from the goals by applying the fuzzy goal programming under the theory of constraints, compared to the traditional method or crisp-goal programming.

Measurement of geometric parameters of extended objects based on the four-coordinate method with a displacement

The paper states that the diameter control in the cable industry is one of the fundamental factors in the final product quality. Such control takes place under the condition that data on the diameter of the electrical insulating sheath of the electric cable will be received continuously. It is possible to evaluate the surface quality of the cable insulation coating, to track thinning, thickening, and some other local surface defects when we receive and process data on the object of control in real time. Modern production facilities are focused on resource efficiency. It means that reducing the consumption of expensive cable materials (non-ferrous metals, alloys, glass, polymers) and insulating materials (plastic compounds, PVC, rubber, etc.) will be one of the main factors in setting up a production complex. The continuous control of the diameter has the ability to provide for such a factor, and also makes it possible to automate the adjustment of the diameter as well as the thickness of the insulation coating using the meter as a part of automatic control systems.

Regional super power grids face political obstacles

Significance Its proponents argue that interconnecting the world’s power grids would make it easier for renewable energy, however remotely it is generated, to replace most fossil fuels in electricity generation. Implementation remains a distant, and politically fraught, possibility but regional super-grids look increasingly feasible and could boost the submarine cable industry. Impacts Load-balancing on a global scale could reduce peak load generation needs by an estimated 5-10%, saving billions in investment. Power grids require estimated investment of USD14tn by 2050, nearly as much as projected spending on new renewables capacity. International rules on carbon pricing and taxing would be a prerequisite for a global power grid.

Features of Mechanical Treatment of Zirconia Crystals when Manufacturing Dies

Materials based on partially stabilized zirconia (ceramics and crystals) are distinguished by high values of mechanical strength, crack resistance, hardness, corrosion resistance, low coefficient of friction when operating in tandem with most metals, which makes them promising materials for a wide tribotechnical application in highly loaded friction units. An example of such a unit is the die mechanism, which is an integral part of the drawing die tool in the cable industry. These hard precision tools (drawing dies or wire dies) actually determine the ultimate success in the wire drawing process.

On Rough Set Theory on Achieving High Quality Cable Material Production by Green Low Carbon Technology

As the second largest machinery industry, the energy-intensive cable industry not only creates a lot of economic value but also consumes a lot of energy. It is an inevitable requirement to promote the technological development of the industry in the new era to improve the quality and efficiency and realise industrial energy-saving and consumption reduction. In order to obtain good strength and conductivity, the metal rods of cable are usually heat-treated for several hours or even several days after the rods are extruded, this is a major energy consuming process in traditional production. Based on the background, this study adopted the energy-saving equal-channel angular pressing (ECAP) technology to replace the traditional heating treatment process, and converted the simple heat conduction with thermo-mechanical energy transfer, so as to realise the good strength and conductivity matching of the cable aluminum alloy material. In this study, energy-saving ECAP technology is used to replace the traditional heat treatment process, and heat-mechanical energy transfer is used to replace the simple heat conduction, so as to achieve good strength and conductivity matching of cable aluminum alloy material. The results show that the suitable ECAP process routes can improve the microstructure of aluminum alloy with higher strength and conductivity than the traditional heating process. The research results can be used for technology upgrading and low carbon production in cable industry due to the significantly time reduction of the energy-consuming heat treatment and the high-efficient obtainment of high-quality production.