نتایج جستجو برای: d3 die steel

تعداد نتایج: 221263  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی صنعتی کرمان - دانشکده علوم 1391

فرآیند نورد تجمعی (accumulative roll bonding (arb)) یکی از رایج ترین روش ها برای تولید مواد ورقه ای فوق ریزدانه شده می باشد. این روش شامل چرخه های مختلفی از نورد، برش و پشته سازی است و تا مرز امکان می تواند تکرار شود. در این تحقیق، کامپوزیت چندلایه al/steel با استفاده از ورق های 1100al- و 12st- به روش arb و تا سه چرخه تولید شد. میکروساختار و خواص مکانیکی کامپوزیت چندلایه al/steel در چرخه های مخ...

2007
Eduardo Batista Franco Leonardo Fernandes da Cunha Ana Raquel Benetti

AIMS To investigate the effect of the storage period on the accuracy of recently developed elastomeric materials. METHODS Simultaneous impressions of a steel die were taken using a polyether (I: Impregum Soft Heavy and Light body, 3M ESPE) and vinyl polysiloxane (P: Perfectim Blue Velvet and Flexi-Velvet, J.Morita). The trays were loaded with the heavy-bodied impression materials while the li...

Journal: :Tetsu-to-Hagane 1951

Journal: :Angewandte Chemie 2022

In 2- und 5-Position einer Phenylenbrücke eines schwach koppelnden gemischtvalenten [{Cp*(dppe)RuC≡C}2(μ-1,3-C6H4)]+ Komplexes hat ein OMe-Substituent nur geringen Einfluss auf dessen Elektronenstruktur. 4-Position hingegen erhöht dieser die elektronische Delokalisation im Grundzustand sowie Intensität des IVCT-Überganges. Schwingungsfrequenzen TDDFT-Berechnungen (LH20t-D3(BJ), def2-SVP, COSMO ...

2013
Babak Seyed Aghazadeh

Oxyhydrogen is a mixture of Hydrogen (H2) and Oxygen (O2) gases. Detonative mixtures of oxyhydrogens with various combinations of these two gases were used in Gas Detonation Forming (GDF) to form sheets of mild steel. In die forming experiments, three types of conical dies with apex angles of 60, 90 and 120 degrees were used. Pressure of mixtures inside the chamber before detonation was varied ...

2004
Tao Li Yogesh B. Gianchandani

While ceramics are important materials for electronic and microsystem packaging, they are difficult to pattern lithographically. LEEDUS, a fabrication process combining lithography, electroplating, batch mode micro electro-discharge machining (µEDM) and batch mode micro ultrasonic machining (µUSM), is presented in this paper. This technology provides die-scale pattern transfer capability from l...

Journal: :Development 2003
James Stallock Kathy Molyneaux Kyle Schaible C Michael Knudson Christopher Wylie

In the mouse embryo, significant numbers of primordial germ cells (PGCs) fail to migrate correctly to the genital ridges early in organogenesis. These usually die in ectopic locations. In humans, 50% of pediatric germ line tumors arise outside the gonads, and these are thought to arise from PGCs that fail to die in ectopic locations. We show that the pro-apoptotic gene Bax, previously shown to ...

2015
A. L. I. Moraes O. Balancin

Hot closed die forging is a regular process applied to manufacture metallic components used in supporting and fixing cable conductors in electric power transmission lines. In this forming process, the final microstructure of the workpiece depends on the control of several processing parameters. In this study, simulation of the industrial forging process of a ball hook component was performed us...

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