Catalogue Search | MBRL
Are you sure you want to remove the book from the shelf?
{{itemTitle}}
75,908
result(s) for
"Cutting"
Sort by:
A comprehensive review on minimum quantity lubrication (MQL) in machining processes using nano-cutting fluids
The cutting fluid is significant in any metal cutting operation, for cooling the cutting tool and the surface of the workpiece, by lubricating the tool-workpiece interface and removing chips from the cutting zone. Recently, many researchers have been focusing on minimum quantity lubrication (MQL) among the numerous methods existing on the application of the coolant as it reduces the usage of coolant by spurting a mixture of compressed air and cutting fluid in an improved way instead of flood cooling. The MQL method has been demonstrated to be appropriate as it fulfills the necessities of ‘green’ machining. In the current study, firstly, various lubrication methods were introduced which are used in machining processes, and then, basic machining processes used in manufacturing industries such as grinding, milling, turning, and drilling have been discussed. The comprehensive review of various nanofluids (NFs) used as lubricants by different researchers for machining process is presented. Furthermore, some cases of utilizing NFs in machining operations have been reported briefly in a table. Based on the studies, it can be concluded that utilizing NFs as coolant and lubricant lead to lower tool temperature, tool wear, higher surface quality, and less environmental dangers. However, the high cost of nanoparticles, need for devices, clustering, and sediment are still challenges for the NF applications in metalworking operations. At last, the article identifies the opportunities for using NFs as lubricants in the future. It should be stated that this work offers a clear guideline for utilizing MQL and MQL-nanofluid approaches in machining processes. This guideline shows the physical, tribological, and heat transfer mechanisms associated with employing such cooling/lubrication approaches and their effects on different machining quality characteristics such as tool wear, surface integrity, and cutting forces.
Journal Article
Research status and development trend of tungsten alloy cutting
Tungsten alloy has excellent performance and has been widely used in military, aerospace and nuclear energy, and other cutting-edge industries. However, tungsten alloy has large hardness, high strength, and poor plastic deformation ability, which resulted in high cutting force and serious tool wear during the cutting process, leading to low surface quality of the workpiece after molding. Therefore, it is of great significance to strengthen the research on tungsten alloy cutting technology to promote the development of tungsten alloy application. Firstly, the research progress of tungsten alloy cutting process technology has been systematically reviewed, and the current status of cutting parameters optimization, new cutting methods and devices, and cutting fluid technology have been emphatically reviewed. Secondly, the types of tungsten alloy cutting tools, the relevant tool micro-texture, and tool coatings technology have been briefly described, and the composite cutting technology such as cryogenic cutting, electroplastically assisted cutting, and ultrasonic vibration assisted cutting and the effect of cutting performance prediction technology on tungsten alloy machining performance have been summarized. Finally, the development prospect of tungsten alloy cutting technology has been prospected.
Journal Article
Sharp : the definitive introduction to knives, sharpening, and cutting techniques, with recipes from great chefs
\"[This] is a knife skills class in book form and an introduction to the best knives you can buy from all over the world. From a premier knife purveyor and go-to knives expert, this comprehensive guide details the elements of buying and caring for good knives, including sharpening and knife skills\"--Amazon.com.
BOOK
The Influence of Surface Texturing of Ceramic and Superhard Cutting Tools on the Machining Process—A Review
Machining is an indispensable manufacturing process for a wide range of engineering materials, such as metals, ceramics, and composite materials, in which the tool wear is a serious problem, which affects not only the costs and productivity but also the quality of the machined components. Thus, the modification of the cutting tool surface by application of textures on their surfaces is proposed as a very promising method for improving tool life. Surface texturing is a relatively new surface engineering technology, where microscale or nanoscale surface textures are generated on the cutting tool through a variety of techniques in order to improve tribological properties of cutting tool surfaces by reducing the coefficient of friction and increasing wear resistance. In this paper, the studies carried out to date on the texturing of ceramic and superhard cutting tools have been reviewed. Furthermore, the most common methods for creating textures on the surfaces of different materials have been summarized. Moreover, the parameters that are generally used in surface texturing, which should be indicated in all future studies of textured cutting tools in order to have a better understanding of its effects in the cutting process, are described. In addition, this paper proposes a way in which to classify the texture surfaces used in the cutting tools according to their geometric parameters. This paper highlights the effect of ceramic and superhard textured cutting tools in improving the machining performance of difficult-to-cut materials, such as coefficient of friction, tool wear, cutting forces, cutting temperature, and machined workpiece roughness. Finally, a conclusion of the analyzed papers is given.
Journal Article
Pattern magic 2
Presents step-by-step instructions on creating patterns for a variety of sculptural garments.
Book
Cutting performance and tool wear mechanism of corrugated helical PCD tool in milling Cf/SiC composites
Cf/SiC composites are widely utilized in the aerospace industry due to their excellent properties. However, Cf/SiC composites are notoriously challenging to machine. The substantial cutting force and severe tool wear during machining often result in poor surface quality and low machining efficiency. This paper presented a corrugated helical PCD (polycrystalline diamond) tool, featuring a helical structure and an arc array micro-groove on the primary cutting edge, and these micro-groove structures are staggered, facilitating continuous material removal during the machining of Cf/SiC composites. The study investigated the milling force variations of the corrugated helical PCD tool when machining Cf/SiC composites under different milling parameters. A comparative study was conducted on the milling force, surface quality, and tool wear of corrugated helical PCD tool and commercial PCD tools. The experiment revealed that the milling force initially decreases and then increases with rising spindle speed and increases with higher feed rates per tooth, milling depth, and width. The newly designed tool exhibited lower milling force, superior machining surface quality, and extended tool life, approximately 0.7 times that of commercial PCD tools. The cutting performance of the corrugated helical PCD tool proved superior. Additionally, it was confirmed that the primary wear mechanism for the corrugated helical PCD tool cutting Cf/SiC composites was abrasive wear.
Journal Article
Stencil type
\"As one of the oldest ways of printing type, stencils are a ubiquitous means of mass communication, appearing on everything from construction hoardings to shipping containers, and often employed by populist, rebellious and art movements. With a broad range of historical examples, Stencil Type presents an intriguing and invaluable collection of this essential typographic art.\" From back cover.
Book
Performance Evaluation of Vegetable Oil-Based Nano-Cutting Fluids in Environmentally Friendly Machining of Inconel-800 Alloy
Recently, the application of nano-cutting fluids has gained much attention in the machining of nickel-based super alloys due their good lubricating/cooling properties including thermal conductivity, viscosity, and tribological characteristics. In this study, a set of turning experiments on new nickel-based alloy i.e., Inconel-800 alloy, was performed to explore the characteristics of different nano-cutting fluids (aluminum oxide (Al2O3), molybdenum disulfide (MoS2), and graphite) under minimum quantity lubrication (MQL) conditions. The performance of each nano-cutting fluid was deliberated in terms of machining characteristics such as surface roughness, cutting forces, and tool wear. Further, the data generated through experiments were statistically examined through Box Cox transformation, normal probability plots, and analysis of variance (ANOVA) tests. Then, an in-depth analysis of each process parameter was conducted through line plots and the results were compared with the existing literature. In the end, the composite desirability approach (CDA) was successfully implemented to determine the ideal machining parameters under different nano-cutting cooling conditions. The results demonstrate that the MoS2 and graphite-based nanofluids give promising results at high cutting speed values, but the overall performance of graphite-based nanofluids is better in terms of good lubrication and cooling properties. It is worth mentioning that the presence of small quantities of graphite in vegetable oil significantly improves the machining characteristics of Inconel-800 alloy as compared with the two other nanofluids.
Journal Article