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A surface plate is a solid, flat plate used as the main horizontal reference plane for precision inspection, marking out (layout), and tooling setup. [1] The surface plate is often used as the baseline for all measurements to a workpiece, therefore one primary surface is finished extremely flat with tolerances below 11.5 μm or 0.0115 mm per ...
The Putnam model is an empirical software effort estimation model [1] created by Lawrence H. Putnam in 1978. Measurements of a software project is collected (e.g., effort in man-years, elapsed time, and lines of code) and an equation fitted to the data using regression analysis .
The American Public Works Association publication, Special Report #62, describes the use and value of facility condition rating systems in Chapter 3.6. Within the US Federal Government, the "condition index" (CI) is a general measure of the constructed asset's condition at a specific point in time. [2]
Machinability is the ease with which a metal can be cut permitting the removal of the material with a satisfactory finish at low cost. [1] Materials with good machinability (free machining materials) require little power to cut, can be cut quickly, easily obtain a good finish, and do not cause significant wear on the tooling.
The latest version AutoCAST-X1 incorporates many innovations, including part thickness analysis, multi-cavity mould layout, multi-neck feeder design, vector element method for solidification simulation, [citation needed] automatic optimisation of feeders and gating system, tooling cost estimation and methods report generation.
The traditional shape of the molds used for pig iron ingots is a branching structure formed in sand, with many individual ingots at right angles [3] to a central channel or "runner", resembling a litter of piglets being nursed by a sow.
A CNC machine that operates on wood CNC machines typically use some kind of coolant, typically a water-miscible oil, to keep the tool and parts from getting hot. A CNC metal lathe with the door open. In machining, numerical control, also called computer numerical control (CNC), [1] is the automated control of tools by means of a computer. [2]
The coefficient of thermal expansion of cemented tungsten carbide is found to vary with the amount of cobalt used as a metal binder. For 5.9% cobalt samples, a coefficient of 4.4 μm/m·K was measured, whereas 13% cobalt samples have a coefficient of around 5.0 μm/m·K.