An innovative new pouring design for steel castings" (2008). Retrospective Theses and Dissertations. Paper 14902.

The paper focuses on the research of influence chosen technological parameters die casting selected mechanical properties castings based Al-Si alloys. experiments conducted within frame practical part examined plunger pressing speed in mould cavity influencing a which were represented by ultimate tensile strength and percentage share porosity castings. Plunger is closely related to filling mode...

background: to establish a balance between work (physical exercise) and human, the aerobic capacity (vo2max) could be used as a measure. assessing heart rate in association to physiological symptoms is the most commonly used tools for the assessment of fatigue during physical exercise. this study aimed to investigate the association between the aerobic capacity and the heart rate of workers fro...

The publication describes modern methods of production fine plastic art castings. stage the smelted model and development casting technology is considered. theoretical basis for obtaining models a given quality given. review technologies standard castings presented.

The research conducted in the paper highlights importance of pressure or holding mold cavity as a critical production parameter high-pressure die casting process for Al-Si alloys. experiments revealed direct correlation between and mechanical properties castings, including ultimate tensile strength, percentage share porosity, structure results showed that increasing led to an increase strength ...

The purpose of this study was to evaluate the effect of changes in the tapering angle of inlay casting, adhesive gap and cavosurface margin on the cavity wall adaptability of the inlay made by the dental CAD/CAM CEREC 2 system. Designed inlay castings were fabricated at three different tapering angles: 0, 3, and 6 degrees. Adhesive gap of 0, -50, -100 microns and adhesive gap of 0 micron combin...

Ductile iron is one of the most important engineering materials, in view of its excellent castability, signifi cantly better mechanical properties and low cost [1, 2]. It represents the fastest growing segment of the iron market. In the medium term, it is to be expected that the market share of nodular iron will level off at 40 % to 45 % [3]. Achieving the full potential of ductile iron require...

STATEMENT OF PROBLEM It is not known whether different high-palladium alloys of similar composition possess comparable tensile strength properties associated with connector soldering. PURPOSE The purpose of this study was to evaluate the tensile strength properties of 2 high-palladium alloys on soldered connectors under simulated pre-ceramic and post-ceramic soldering conditions. MATERIAL A...

The effect of vibration (50 Hz) on the formation aluminum castings 99.5% purity at various cooling rates was studied. It found that presence leads to an increase in rate castings. higher speed without vibration, stronger increasing when applied. Apparently, this is associated with additional mixing melt by free-floating crystals.