Diffusion bonding or welding is a solid state joining process wherein coalescence of the faying surfaces is produced by the application of pressure and elevated temperature to carefully cleaned and mated metal surfaces so that they actually grow together by atomic diffusion. Diffusion welding takes longer welding time.
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CO2 sand casting or Hobby Aluminum casting is suitable for urgent and heavy orders with high accuracy and good surface finish on castings required. Hobby mould casters used this method because in this method elimination of core drying machine, but it is not an economical process. The only expense hobby mould caster encounters are the cost of the CO2 cylinder, regulator, and hoses and hand held applicator gun or nozzle. The operation is fast and the possibility of rejections is less. CO2 is a sand molding technique and it uses grain sand which is mixed with a solution of sodium silicate that acts as binding agent. CO2 gas is used to harden the mass of sand after the mould has been made.
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Rocket propulsion Systems A rocket engine is defined as an engine that expands thrust by ejecting a stream of matter (i.e. exhaust gas) backwards. Since the reaction (i.e. thrust force) principle involved assumes a self enclosed supply of energy. A rocket engine can operate in any medium including space (i.e. Outside the earth’s atmosphere), where there is no oxygen to
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Objective Question and Answers for UPSC / GATE Exams: UPSC | GATE Exam for Mechanical | Objective Question and Answers | Tamilnadu Teachers Recruitment Board The common soldering method used for soldering circuit components to their boards is known as: WAVE soldering Reflow soldering Furnace soldering Infrared soldering Answer: WAVE soldering Hint: Wave soldering is a large-scale soldering process by which electronic components
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ANSYS Mechanical Workbench | ANSYS Design Space Design Modeler (DM) is a component of ANSYS workbench. A cad like parametric modeler with analysis modeling goals: 2D, 3D, Line and Surface modeling capability Performs unique geometry modification capabilities for simulation such as Feature simplification Spot welds Split surfaces Surface Model Extraction Planer Body Extraction Beam Modeling Enclosure Operation The topmost tabs
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FEA Simulation In this article different types of analysis in simulation models are briefly explained. Some of the modules comprised are structural, thermal, CFX, and FE Modeler analysis types are explained here. Originally FEA is developed for 2D type simulation and analysis (Plane stress). When 3D simulation and analysis introduced, which increases number of simultaneous algebraic equation to solve the
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No cutting fluid is used in the following operation: Planning and shaping Broaching Honing Thread rolling Answer: Planning and shaping Hint: In planning and shaping operation, cast iron work piece machined. Graphite in the cast iron acts as a lubricant in itself. But machining cast iron will get you fine powders everywhere that tend to sneak into your machines nooks
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In this article Introduction to Finite Element Analysis is discussed. FEA is a computerized method for analysis / simulation for the engineering structures or Components. They are widely used in Automotive and various fields to replace the experimental design / testing. Finite Elements in Analysis and Design Finite Element Analysis is a way to simulate loading conditions on a design
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In this article we discussed about Mechanical Engineer Interview Questions and the solved answers in Manufacturing Engineering A CNC vertical milling machine has to cut a straight slot of 10 mm width and 2 mm depth by a cutter of 10 mm diameter between points (0,0) and (100,100) on the XY plane (dimensions in mm). The feed rate used for
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This articles is all about Mechanical Engineer Interview Questions with solved examples. This part of mechanical Engineering Interview, manufacturing engineering questions are discussed. In abrasive water jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate (A) increases continuously (B) decreases continuously. (C) decreases, becomes stable and then increases. (D) increases,
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