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q what do you know about series welds in spot weldingit is a welding method in which two or more spots are produced simultaneously with only one
q what do you know about direct weldsit is a welding method in which one or more electrodes oppose each other contacting both sides of the work and
normal 0 false false false en-in x-none x-none microsoftinternetexplorer4 explain the methodology of hydrostatic
qshow the procedure of spot weldingthe steps involved in making a spot weld are listed below and shown but before spot welding one must make sure
allowable strength design asdprocess- apply service loads with no load factors- assume linear elastic analysis of structure- calculated stresses
explain the importance of hydraulic paver machine in the center of the augers is a gear box kick back paddles are used to tuck mix under the gear box
explain the strength design lrfd 1 gamma factors are applied to loads and phi factors applied to resistance2 unfactored service loads receive a
qwhat is the mean of off timeit is the interval from the end of the hold time to the beginning of the squeeze time for the next resistance welding
define superposition method 1 remove enough redundant supports to reduce the structure to a statically determinate condition2 calculate the
explain statically indeterminate structures fall into two categories 1 beam problems with additional supportsrestraints2 axial bar
what is the objective of hydrostatic sensor paver machineto eliminate the problem in screw conveyer extension of hydrostatic sensor paver machine as
q what do you mean by weld and hold timeweld timeduring this period the welding current flows through the circuit ie it enters from one electrode
explain the frame members effective lengths1 effective length is a product of an effective length factor k and the actual length of the column2 k
q what is squeeze timeit is the time between the initial application of the electrode pressure on the work and the initial application of current to
the total resistance of the system between the electrodes consists ofi the resistance of the work piece r1ii the contact resistance between the
q define current for electrical resistance welding- with other parameters kept constant the temperature in resistance welding is regulated by
q define heat for electrical resistance weldingthe heat h for electrical resistance welding is generated by passing a large electrical current of
q what is mapp gas weldingmethyl acetylene-propadiene-petroleum m inert than other gas mixtures making it safer for use and store mapp can also be
q describe the types of gas weldinggas welding involves the use of a gas-fed flame torch to heat the metal work piece and the filler material to
q define gas weldingmetal joining process in which the ends of pieces to be joined are heated at their interface by producing coalescence with one or
q which functions used for coatingbullimproves arc stability by providing certain chemical which have this ability by ionizing the path of
q what is electrode coatingsbullslag forming ingredients asbestos mica silica fluorspar titanium dioxide iron oxide magnesium carbonate calcium
q describe the selection of elctrodesthe selection of a proper electrode for electric arc welding is very important to obtain a sound welded joint of
q what is coated electrodethese types of electrodes are prepared by coating of flux on metal wire due to arc metal electrode melts and used as filler
q explain the use of bare electrodethis type of electrode is also known as plain electrode no flux covers on this electrode these types of electrodes