Equipment for resistance welding-measurements, Mechanical Engineering

EQUIPMENT FOR RESISTANCE WELDING-Measurements

Measurement of the parameters are important while fixing the parameters or testing a machine. Resistance welding instrumentation system which record the various parameters simultaneously with respect to time are now available in the market. Also, instruments for accurate measurement of the secondary current, pressure, the deflection of the electrodes, vibration of the electrodes for huge resistance welding machines are available in Indian market. The resistance welding instrumentation system developed by WRI can measure secondary current and weld time for spot / projection welding applications.

The primary current can be measured using current transformers connected to pointer stop type ammeters or storage oscilloscopes.

The primary voltage or secondary voltage can be readily measured using an ordinary voltmeter (preferably pointer stop type). If a wattmeter is also included in the circuit (primary) the power factor can be calculated.

Time can be conveniently measured using stop watches in seam or flash welding. In spot welding, cycle counters are used. In many sophisticated machines, calibrated timers with displays are used in their sequential control circuits.

Pressure is measured using strain gauges but location of these require ingenuity on the part of the operator. Now a days, pressure transducers which are provided with flanges for connecting in the fluid line are available for up to 800 kg / cm2. Static electrode force can be measured by means of deflection gauges. This force can be calculated from the pressure by multiplying it with the area of cross section of the electrode surface.

The load cell developed by WRI can measure the load directly between the electrodes for spot / projection welding machines.

Posted Date: 9/17/2012 5:11:03 AM | Location : United States







Related Discussions:- Equipment for resistance welding-measurements, Assignment Help, Ask Question on Equipment for resistance welding-measurements, Get Answer, Expert's Help, Equipment for resistance welding-measurements Discussions

Write discussion on Equipment for resistance welding-measurements
Your posts are moderated
Related Questions
List and explain four different types of layouts for a factory.

Natur e of Distribution of Bending Stress Figure Nature of stress distribution in section of a beam It will be proved that bending stress at any layer of section o

I need assignment help in Java Language and Virtual Machine Specifications, write short notes on Java Language and Virtual Machine Specifications.

a. Objectives Observe vibration first hand Calculate natural frequency and damping coefficient observe changes as a result of temperature and material b. Backg

Find length of belt: Find length of belt which is required to drive a pulley of 500mm diameter running parallel at the distance of 12m from driving pulley of diameter 1600m.

how i make assigment for newton s ring

(a) Derive a mathematical expression to determine the efficiency of Bell Coleman Cycle. (b) A dense air refrigeration cycle acts between pressures of 4 bar and 16 bar. The air t

Formulate stress analysis techniques relevant to a range of situations. The Brief A company has come and seek your advice on their draft design flat bridge. The bridge will

The greasted and least resultant of forces performing on a body are 35 KN and 5 KN respectively. Calculate the magnitude of forces. What could be the angle between these forces if