Author: SQA Rizvi Publisher: ISBN: 9780803120969 Category : Fuel Languages : en Pages : 28
Book Description
METALWORKING IS THE PROCESS OF CONVERTING BULK METAL into a component or a part and primarily involves two types of operations: those that produce metal debris and those that produce no debris. The former type is classified as metal removal operations and the latter type is classified as metal forming operations. Cutting and grinding are examples of the first type and drawing, stamping, and bending are examples of the second type. All metalworking operations involve bringing two solids, a tool and a work piece, together to create a new part or a shape. The process involves high friction, high temperature, and tool wear; and it is a job of the lubricant, or the metalworking fluid, to control them. Metalworking fluids accomplish this by providing coolinf, lubrication, and protection against corrosion. Therefore, they improve the efficiency of the operation, and hence increase productivity.
Author: Jerry P. Byers Publisher: CRC Press ISBN: 1351230735 Category : Technology & Engineering Languages : en Pages : 524
Book Description
This revised and expanded Third Edition contains 21 chapters summarizing the latest thinking on various technologies relating to metalworking fluid development, laboratory evaluation, metallurgy, industrial application, fluid maintenance, recycling, waste treatment, health, government regulations, and cost/benefit analysis. All chapters of this uniquely comprehensive reference have been thoroughly updated, and two new chapters on rolling of metal flat sheets and nanoparticle lubricants in metalworking have been added. This must-have book for anyone in the field of metalworking includes new information on chemistries of the most common types of metalworking fluids, advances in recycling of metalworking fluids, and the latest government regulations, including EPA standards, the Globally Harmonized System being implemented for safety data sheets, and REACH legislation in Europe.
Author: Publisher: ISBN: 9780803170001 Category : Lubricating oils Languages : en Pages : 34
Book Description
DISCUSSION IN THIS CHAPTER PERTAINS TO fluids that facilitate metalworking and machining operations. The nature of the various working operations is examined, along with the properties of the lubricants needed for each. Discussion includes metalworking fluid classifications, composition, formulating, and testing. Representative examples of the various metalworking fluid formulations are also provided at the end of the chapter. Metalworking is the process of converting the bulk metal into a component, or a part, and primarily involves two types of operations: Those that produce metal debris and those that produce no debris. The former type is classified as the metal removal operations and the latter type is classified as the metal forming operations. Cutting and grinding are examples of the first type and drawing, stamping, and bending are examples of the second type. All metalworking operations involve bringing two solids, a tool and a work-piece, together to create a new part or a shape. The process involves high friction, high pressures, high temperatures, and tool wear, and it is the job of the lubricant, or the metalworking fluid, to control them. Metalworking fluids accomplish this by providing cooling, lubrication, and protection against corrosion. They, therefore, improve the efficiency of the operation, and hence increase productivity. Irrespective of the type of the metal cutting operation, whether it is turning, milling, drilling, planing, shaping, broaching, or sawing, the mechanism of action of all cutting tools is the same. That is, the cutting is performed by the tool either as it moves across the metal surface being machined, or the tool is stationary and the metal surface moves against it. In either case, the process is accompanied by plastic deformation of the metal surface at the front of the cutting edge of the tool and the rubbing of the formed chip with the tool surface, as shown in Fig. 11.1. The temperature estimates in the cutting zone are 900C on the tool's cutting edge, 500C on the chip, and 200C on the work-piece. As we move away from this zone, the temperature of the tool drops to 400C on the tool's outer edge and to 200C on the chip. About 75% of the heat generated is due to the deformation of the metal and the other 25% results from the friction due to sliding of the chip on the tool face. Metal deformation occurs due to shear or plastic flow along the shear plane that extends from the edge of the tool to the surface of the work-piece metal, see Fig. 11.1. Below the shear plane the metal is undisturbed; above it the metal is deformed and ultimately results in the formation of a chip. It is critical that the high temperatures in the cutting zone are decreased, otherwise extensive tool wear and rough finish of the work-piece will occur. In the case of the brittle materials, high temperatures in addition may cause the fracture of the metal along the shear plane, which will form a discontinuous or segmentai-type chip. This is undesired since it will interrupt the continuous cutting action. In the case of the ductile metals, high temperatures will also cause a built-up-edge on the nose of the tool, which will result in a severe plowing action and again poor finish of the work-piece surface will occur. The built-up edge is the stagnant mass of the metal that sheared away from the body of the chip by the high tool-face friction.
Author: Jerry P. Byers Publisher: CRC Press ISBN: 1498722237 Category : Technology & Engineering Languages : en Pages : 515
Book Description
This revised and expanded Third Edition contains 21 chapters summarizing the latest thinking on various technologies relating to metalworking fluid development, laboratory evaluation, metallurgy, industrial application, fluid maintenance, recycling, waste treatment, health, government regulations, and cost/benefit analysis. All chapters of this uniquely comprehensive reference have been thoroughly updated, and two new chapters on rolling of metal flat sheets and nanoparticle lubricants in metalworking have been added. This must-have book for anyone in the field of metalworking includes new information on chemistries of the most common types of metalworking fluids, advances in recycling of metalworking fluids, and the latest government regulations, including EPA standards, the Globally Harmonized System being implemented for safety data sheets, and REACH legislation in Europe.
Author: Jerry P. Byers Publisher: ISBN: 9781523114368 Category : Metal-working lubricants Languages : en Pages :
Book Description
"This revised and expanded Third Edition contains 21 chapters summarizing the latest thinking on various technologies relating to metalworking fluid development, laboratory evaluation, metallurgy, industrial application, fluid maintenance, recycling, waste treatment, health, government regulations, and cost/benefit analysis. All chapters of this uniquely comprehensive reference have been thoroughly updated, and two new chapters on rolling of metal flat sheets and nanoparticle lubricants in metalworking have been added. This must-have book for anyone in the field of metalworking includes new information on chemistries of the most common types of metalworking fluids, advances in recycling of metalworking fluids, and the latest government regulations, including EPA standards, the Globally Harmonized System being implemented for safety data sheets, and REACH legislation in Europe."--Provided by publisher.
Author: V P Astakhov Publisher: Elsevier ISBN: 0857095307 Category : Technology & Engineering Languages : en Pages : 424
Book Description
Metal working fluids (MWFs) provide important functions such as lubrication and cooling in the machining of metals. This book reviews the issues surrounding the use of fluids for cutting and grinding throughout the metal working process, from selection and testing to disposal.The book opens with chapters considering the mechanism and action, selection and delivery of MWFs to the machining zone before moving onto discuss the many issues surrounding MWFs during machining such as selection of the proper MWF, environmental concerns, supply methods, circulation and monitoring. The final chapters discuss the maintenance, replacement and disposal of MWFs.With its distinguished editors and international team of expert contributors, Metalworking fluids (MWFs) for cutting and grinding is an invaluable reference tool for engineers and organizations using metal cutting/machining in the manufacturing process as well as machine designers/manufacturers and machining fluid/chemical suppliers. - Chapters consider the mechanism and action, selection and delivery of MWFs to the machining zone - Environmental concerns, supply methods, circulation and monitoring are also discussed - Written by distinguished editors and international team of expert contributors
Author: Institute of Petroleum (Great Britain) Publisher: John Wiley & Sons ISBN: 9780471926108 Category : Metal-work Languages : en Pages : 26
Book Description
A Code of Practice giving general recommendations covering all aspects of handling fluids used as lubricants or coolants in metalworking processes. These processes may be metal removal by cutting or abrasion, or metal forming by punching, deep drawing, ironing, power spinning, wire drawing, forging, extrusion, stamping and rolling.
Author: SQA Rizvi
Author: Jerry P. Byers
Author: 
Author: 
Author: Jerry P. Byers
Author: Jerry P. Byers
Author: 
Author: V P Astakhov
Author: Surinder Parkash
Author: Institute of Petroleum (Great Britain)