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Presintering is an operation in which the powder metallurgy components after compaction are heated for a short time to a temperature considerably below the final sintering temperature. The purpose of the intermediate operation is to strengthen the green compact for handling and subsequent operations.
Presintering is necessary to produce parts from material such as tungsten carbide which become very hard on sintering. When machining is required to be done on such parts, the problem is alleviated by employing a presintering operation. The machined parts are then finally sintered. As there is very little dimensional change on final sintering, in most cases no further work is required to be done on these parts. If no machining is required presintering can be eliminated.
WHAT IS RTT
Process management
Q. Explain the following terms. (i) Flash in forging. (ii) Fullering and up setting in forging. (iii) Trimming of
can any one please help with virtual circuit simulation
DEALER'S CERTIFICATE Reference: When the sale of an aircraft involves flight without a Certificate of Registration, The C.A.A. will permit the aircraft to fly under certain re
Provided a 1D array of integers, find all combinations of 3 values from this set such that: a+b+c=0 For example, if one were provided with the set [3 1 3 -4 -6], the resulting answ
its working
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what is QCM?
Difference amplifier: Figure shows how two inputs can be subtracted. This circuit differs from previous types with negative feedback in that the non-inverting terminal is not
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