نتایج جستجو برای: forging is an important process
تعداد نتایج: 9465866 فیلتر نتایج به سال:
The paper presents an investigation on the effect of process variables and material condition on forgeability of magnesium wrought alloys of Mg-Al-Zn group, AZ31, AZ61 and AZ91. The experimental work includes studies of forging capabilities of the alloys in closed-die forging at hot and warm-working temperatures. Forging tests are performed for material both in as-cast and asworked condition, f...
Abstract— Forging is a very complex process and the measurement of actual forces for real material is difficult and cumbersome. The main objective of this document is to use the analytical methods for measuring parameters such as load, and stress distribution of forging process and use them to make simple, reliable, fast and non-expensive simulation tools, contrary to the commercial software’s ...
A widely used method for hot forming steels and alloys, especially heavy forging, is the process of multistage forging with pauses between stages. The well-known effect which accompanies multistage hot forging is metal plasticity recovery in comparison with monotonic deformation. A method which takes into consideration the recovery of plasticity in pauses between hot deformations of a billet un...
efl/esl textbooks have been regarded as essential language teaching materials with which the learners spend about 70 up to 90 percent of their class time. the important role they play and their vast use make them not only influential in learning the language but also in shaping values and attitudes. put it another way, textbooks socialize learners using their contents (i.e. texts, illustrations...
Recent developments in sensing and computer technology have resulted in most manufacturing processes becoming a data-rich environment. A cycle-based signal refers to an analog or digital signal that is obtained during each repetition of an operation cycle in a manufacturing process. It is a very important class of in-process sensing signals for manufacturing processes because it contains extens...
چکیده اساسی ترین منبع استراتژیک هر سازمان یا جامعه،منابع انسانی می باشد.جوامع موفق،جوامعی هستند که بتوانند منابع انسانی خود را به طور صحیح پرورش و توسعه دهند. در اقتصاد امروز، دانش به عنوان مهمترین سرمایه، جایگزین سرمایه مالی و فیزیکی شده است . دانش و اطلاعات به رشد اقتصادی کمک می کند.این امر موجب افزایش اهمیّت سرمایه فکری به عنوان مقوله ای پژوهشی شده است. مدیریت منابع انسانی یعنی مدیریت و ادار...
this research aims at answering the questions about translation problems and strategies applied by translators when translating cultural concepts. in order to address this issue, qualitative and quantitative study were conducted on two groups of subjects at imam reza international university of mashhad. these two groups were assigned as beginner and advanced translation students (10 students). ...
Organisms living on the earth may undergo inevitable toxification by biological 'garbage', a variety of bio-metabolites. Such garbage includes a particularly large number of toxic carbonyls, such as alpha,beta-unsaturated carbonyls created by free radicals, glycation, and other post-translational side-reactions during various stresses and diseases. The accumulation of these toxic substances and...
abstract there is not much sources about ancient carnival and ceremonies , but some information can be gain from documents . as a matter of fact the ceremonies were a part of zarartiyan principles which zartosht had taken them to his religion . it should be mentioned that the oldest ceremonies are about poster and agriculture principles this seasonal ceremonies were very important for agri...
A majority of high-strength constructional elements of titanium alloys are manufactured by hot plastic working methods, chiefly by open die forging or die forging. Most often, β α + two-phase titanium alloys are used, which are characterized by high relative strength, good hightemperature creep resistance (up to 450°C), high fatigue strength under corrosive conditions, corrosion resistance in m...
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