Improper venting during moulding process causes a diesel effect which – McqOptions

MCQOPTIONS

1.	Improper venting during moulding process causes a diesel effect which further results in stress crack defects in the casting.
A.	True
B.	False
Answer» B. False

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In the injection moulding process, venting at the runner side can reduce the air pressure.
For the venting process, the casting yield is generally high with the overflow system in the mould.
In the injection moulding process, an overflow system is used for the venting process.
Improper venting during moulding process causes a diesel effect which further results in stress crack defects in the casting.
FOR_THE_VENTING_PROCESS,_THE_CASTING_YIELD_IS_GENERALLY_HIGH_WITH_THE_OVERFLOW_SYSTEM_IN_THE_MOULD.?$
In_the_injection_moulding_process,_venting_at_the_runner_side_can_reduce_the_air_pressure.$
In the injection moulding process, an overflow system is used for the venting process?
Vacuum technology for venting process is very economical and widely used in the casting process.
Porous sintered materials can be inserted into the mould cavity to act as a vent.
High viscosity of molten metal can help in removing of gases but will cause defects in the casting.