Equipment for resistance welding-measurements, Mechanical Engineering

Assignment Help:

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.


Related Discussions:- Equipment for resistance welding-measurements

Illustrate all the laws of mechanics, (a) Illustrate all the laws of mechan...

(a) Illustrate all the laws of mechanics? (b) What ate the two limits of limitation on Newtonian mechanic?

Gears, What is the working depth of a gear

What is the working depth of a gear

WELDING, WHAT IS DIFFERENCE BETWEEN POROSITY AND BLOW HOLE

WHAT IS DIFFERENCE BETWEEN POROSITY AND BLOW HOLE

Terms related to stream engine, Terms related to stream engine: STEA ...

Terms related to stream engine: STEA M ENGINE MAIN PARTS: 1 .     Frame: It supports the various moving parts. 2 .     Cylinder: It forms a chamber in which the

Determine the wire diameter of the inner spring, Determine the wire diamete...

Determine the wire diameter of the inner spring: In a compound helical spring, the inner spring is arranged in and concentric with the outer one, but is 10 mm shorter. The out

General tools of tool and equipment , GENERAL TOOLS: General tools include...

GENERAL TOOLS: General tools include spanners, screw drivers, files, pliers, vices, punches, mallets, chisels, grinders, drilling machine, oil and grease guns, etc.

Determine the chemical formulate for refrigerant, (a) Draw P-H and T-S diag...

(a) Draw P-H and T-S diagrams for following cases : (3) (i) Cycle with superheated vapour before compression. (ii) Cycle with sub-cooling or under-cooling of refrigerant.

Show material selection process, Q. Show Material selection process? • ...

Q. Show Material selection process? • Design life shall be based on project design criteria and normally 10 to 15 years' service life specified for well pads, 20-25 years for C

Manufacturing technology, Details of rolling process,Different rolling meth...

Details of rolling process,Different rolling methods,

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd