Surface roughness is one of the most important requirements in the cutting process. In this paper, advantages of Taguchi’s experimental design technique, experimental measurements, and analysis of variance (ANOVA) are integrated to statistically investigate surface roughness in hard milling H13 steel (HRc50±1) with coated round inserts under dry cutting conditions. A 12-parameter cubic regression model for surface roughness is developed, which simultaneously takes into consideration the main effects and the interactions of four cutting parameters. A good correlation is observed between the predictive values and the experimental data.
There is a great potential market for biodegradable materials products and process equipment, long time molding, lower heat transfer efficiency, uniform temperature distribution and other issues have been studied focused, combined with biomass biodegradable food boxes forming technology research. The die temperature distribution and the temperature difference between upper and lower template have been analyzed by simulation model in this paper. According to analyzing, the die structure has been changed, so as to meet the requirements of the upper and lower temperature.
A series of the blending membranes comprised of the different mass ratio of silk fibroin peptide (SFP) power, silver nanoparticles (NanoAg) and polyurethane (PU) were prepared with mixing the SFP power, silver nitrate and PU, and the silver nitrate was reduced to NanoAg by SFP in this mixing process. UV spectrum was used to detect the nanoAg. The experimental results confirmed the formation of NanoAg. The dissolution of the obtained membranes in simulated body fluid (SBF) were determined, and showed that the membranes had good stability. Their mechanical properties were also determined. The results revealed that the mass ratio of SFP to PU was an important influence factor, and the mass ratio 30/70 (SFP/PU) of the membrane was the optimum. The Antibacterial properties against Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa, were examined, the results of which indicated that the membranes containing NanoAg had a good bactericidal effect. The SFP/PU/NanoAg membranes also showed good cell and blood compatibility, and then they have application prospect as an antibacterial materials using for medical catheters.
An alloy cast iron has special properties by adding some alloying elements to the ordinary cast iron ASTMNo35A. Diffusion wear is one of the main cutting tool wear mechanisms in machining of the alloy cast irons. The diffusion of tungsten (W) and iron (Fe) between the alloy cast iron and the WC/Co cemented carbides was investigated in this paper by means of heating diffusion couple. It has be proved from the experiment that Fe in the alloy cast iron diffused a deeper distance in the WC/Co cemented carbides with the higher Co content; while the diffusion of W element in the WC/Co cemented carbides the alloy cast iron was not serious. The Vickers-hardness analysis of the alloy cast iron and K20 cemented carbide couple was determined. The elements diffusion impaired the hardness of the alloy cast iron and WC/Co cemented carbide cutting tool.
Biodegradable material is a kind of green material, which is easily reclaimed and reused, and does not pollute the environment and can decompose quickly, there is not insurant produce after trash. This study aims to looking for new material and low price to produce dishware. Food dishware we produced using different biodegradable material cooperating with Jiufa Group Company, the main material is pure plant fiber and starch, additive edible material, and degradable material. (1) The mix of the dishware material technology and the spark technology has been studied. (2) The test of biodegradable of the dishware has been studied, and the result shows this packaging material can be separated to carbon and water finally after disused by the action of animalcule, in the water and air. The energy sources and resource can more reduce for this degradable material to produce dishware, so as to green and keep environment friendly, safe to use.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.