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
State the Product Data Exchange Specifications In May 1984, a late night meeting of the IGES Organization Edit Committee was held. The outcome: the Boeing representative was

Write an essay on air, water and soil-based heat pumps. Discuss the advantages and the disadvantages of each system. For each system identify the conditions under which that system

Schedule Evaluation The schedules are evaluated as per to the criterion weighted loss of slack. Now let t 0 si be the slack (time buffer) of job I as per to the initial sched

Piston Area : The area of a circle of diameter equal to the cylinder bore is called the piston area and is designated by the letter A and is usually expressed in square centimetr

Q. Corrosion - Erosion Allowance? The required design life shall be based on written agreement between the user and the Engineering Contractor. Allowance specified shall be ba

What is the net angle of twist at the free end: The stepped steel shaft illustrated in Figure is subjected to a torque (T) at the free end and a torque (2T) in the opposite di

a plano concave lens is used instead of plano convex lens in newtons ring

Bore - Thermodynamics: The inner diameter of engine cylinder is called as bore. It can be measured by a vernier calliper or bore gauge. As engine cylinder wears out with the p

Ask what is hazard and how it is occuring

Heat Treating Equipment: The major equipment for heat treatment is furnace. There are two main categories of furnaces - batch and continuous. The furnace selection needs cons