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Course 36865
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Calculate Carbon Equivalent (CE) of the steel. The chemical composition of the steel is as follows:
C = 0.36%Si = 0,4%Mn = 0,69%Cr = 1%Mo = 0.3%Ni = 1.7%V = 0%W = 0%P = 0,034%S = 0,01%Cu = 0,2%
Write the answer with accuracy of two decimal places. Use "." as decimal separator.
Find required spindle rotational speed N (rpm) for external turning of a workpiece made of steel. Outer radius of the workpiece is R=79.7 mm and cutting speed V=638 m/min.
Cutting speed for turning is calculated as:V=(π·D·N)/1000,
where D - workpiece diameter, mm; N - rotational speed, rev/min.
Answer provide as full number.
Which material is used as binder in the molding sand?
Clay content in molding materials does not exceed:
The main components of the molding sand are:
The strength of the molding sand depends on....
Plasticity of molding sand is
To ensure safety in the casting lab, following rules should be kept:
Moulding sand gas permeability can be improved by:
Excessive binder content in molding sand may cause: