منابع مشابه
Wear Beahaviour of Nitrided Microstructures of Aisi H13 Dies for Hot Extrusion of Aluminium
Due to their lightness and good mechanical properties various Al-alloy products obtained by casting, rolling and hot extrusion are still gaining in importance. Hot extrusion of Al-alloys (Figure 1.a) enables the production of a very varied range of profi le shapes, which, due to the above mentioned excellent properties are used mainly in the automotive and electro-industries, in aeronautics, in...
متن کاملEvaluation of Ductile Damage Criteria in Hot Forming Processes
The process of ductile fracture which occurs due to the accumulation, growth and combination of defects or cracks of material is called ductile damage. Failure in materials can be predicted, using damage mechanics and damage criteria. On the other hand, most of the materials depended to the manufacturing process, are formed in warm or hot conditions so that; the temperature also affects on the ...
متن کاملModeling of Suspension Flows in Coating Dies
Coating of dispersions or suspensions of particles in a fluid is very common in the manufacturing of functional materials. Commonly, a uniform distribution of the suspended phase is required, but, in practice, agglomerates of the suspended particles appear in the final product. It has been shown experimentally that agglomeration takes place as the dispersion flows inside the coating die, before...
متن کاملPhotoelastic Investigation of Metal-forming Processes Using New Sapphire Dies
Sapphire dies (of single-crystal aluminum oxide) are used to obtain interfacial conditions along the contact surface of the die in a strip-drawing operation. Several solutions based on slip-line field analysis and upper-bound techniques are available for metal-forming problems. However, these solutions generally neglect elasticity and work-hardening and assume that friction is constant along th...
متن کاملInvestigation of hot metal gas forming process of square parts
Aluminum alloys are considered a lot in the automotive and aerospace industry because of their high strength to weight ratio. In this manuscript, the gas forming process of aluminum AA6063 tubes at high temperatures up to 500°C is investigated, through experimental and numerical tests. Therefore, an experimental setup is prepared and so, tube specimens are formed in a die with square cross sect...
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ژورنال
عنوان ژورنال: Mechanik
سال: 2015
ISSN: 0025-6552
DOI: 10.17814/mechanik.2015.5-6.198