Global ETD Search
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Showing 1 to 12 of 12 for “"tool materials"”.
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Alloy design or three-dimensional printing of hardenable tool materials
… important applications is to fabricate the metal tooling for plastic injection molding. In order to achieve a fully dense 3DP metal tool, the current 3DP process involves five steps: printing, debinding, sintering, liquid metal infiltration and heat treatment. Due to the infiltration requirement, …
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The performance of ultra-hard cutting tool materials in maching aerospace alloy TA48
… (CBN) and polycrystalline diamond (PCD) cutting tool materials and compared to various coated and uncoated tungsten carbide grades when cutting titanium alloy workpieces. Two important experimental techniques were employed during the course of this work, firstly a quasi-static contact method was …
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Optimizing the economic efficiency by micro-drill life improvement during deep-hole drilling in the 212-Valve manufacturing process
… and removal during the process to improve the tool life. The effects of the tool materials, geometry and peck drilling procedures were investigated. Based on these studies, a new micro drill bit, TYl 30, was selected from the commercial market and the test results for drilling 0.2794 mm holes …
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Simultaneous machining of aerospace structural materials using poly-drills
… the growth of composites and other lightweight materials, aluminium alloys remain an attractive choice for the aerospace industry due to their distinct manufacturing processes, good resistance to fatigue crack growth and superior damage tolerance. In the aerospace industry, the drilling process …
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The application of the soft impression technique to evaluate flow stress, creep and frictional deformation of polycrystalline diamond and cubic boron nitride
… hard material is worn by a softer one - i.e. the tool and workpiece respectively. The soft impressor technique, introduced by Brookes and Green (1973), has proved valuable in measuring the relevant mechanical properties of tool materials - e.g. the measurement of the flow stress of diamond single …
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Visible Tools, Invisible Crafts: An analysis of textiles tools, textile production, and textile organisation along the south coast of Iron Age Britain
… Europe outside of some special conditions. Thus tools that produced textiles are the main source of information on textiles created and how these were made. Textile tools also provide evidence that textile fragments cannot: where production occurred and how it was organised. Identifying areas and …
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Fundamentals and Applications of Hot Stamping Technology for Producing Crash-Relevant Automotive Parts
… a library of material properties (for blank and tool materials) and other inputs (thermal boundary conditions, etc.) for simulation of hot stamping process is defined. Several approximations of hardness and tensile strength from phase transformations are investigated and validated with …
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Thermal Management In Friction Stir Welding of Aluminum Alloys
… that primary process control parameters like tool rotation and translation rate and forge axis force have complicated and interactive relationship to the process response variables such as peak temperature, time at temperature, torque and power and in-plane forces. </p> <p> Of primary …
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Finite element and experimental evaluation of injection forging for the forming of automotive fasteners
… force, forging energy, forming form-error, tool stress, etc. of conventional multistep forging and injection forging (single step forging). A ring test was also conducted to determine the coefficient of friction between the workpiece and the tools in order to define the contact conditions in …
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Identification of the Mandibular Nerve with CBCT Using a Nerve Marking Tool or Not
… a radiology technician utilizing nerve marking tool and compared to the same measurement by a clinician not utilizing a nerve marking tool. Materials and Methods: With ninety six consecutive CT scans taken by CB MercuRay for dental implants, the location of the nerve canal was marked with a …
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Investigating the influence of film formation on the machining performance in an atomization-based cutting fluid spray system
Titanium alloys are difficult to machine materials due to their poor thermal conductivity, high affinity to tool materials at cutting temperatures and production of thin chips during machining. Heat generated in the tool-chip contact region is not readily dissipated, leading to a shortened tool …
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Nástroje pro technologii soustružení
Tato bakalářská práce je zaměřena na současné soustružnické nástroje. V první části práce je krátká historie, kde je shrnut vývoj technologie soustružení. V další části je základní rozbor technologie soustružení. Třetí část se zabývá používanými soustružnickými nástroji, které jsou rozdělené dle …