With regard to weld inspection:

You have not mentioned the type of welding being done or what you are welding or brazing, we need to know what type of welding you are doing and or inspecting simply because there are to many variables to answer your question.

As with any maintenance, ninety nine percent is preparation of the work requiring a clean welding surface and a clean and safe work area and proper grounding of the weld if arc welding of any type.

Typically you visually inspect welds after they are cooled by chipping off the slag and waiting for the piece to cool before trying bend it by hand, if you are arc welding without sheilding gas and flux coated welding rod or core wire the same rule applies.

If you are not using any welding jigs to hold the pieces together for interior welds they will be harder to inspect for proper welds if it is not possble to inspect them as over heating from the weld will cause holes to develope.

As you have not described your welding process I will tell you to go to the ASTM and ISO web sites for information regarding same.

Unless I know more I can not help you.

Send me an e-mail with your questions to:

lzaharis@lightlink.com ■

Originally Posted by Pankaj R.

How to inspect welding work,is there any method for checking welding & welding thickness.

Test welds can be obtained by cutting through the joint, polising the surface & examined by etching. This procedure is described in detail in the exmination rules for coded welders.

After that you fall back on Non Destructive methods to give your structure a chance of holding together which might be what you desire.

There are several NDT methods viz, Radiography, Ultrasonic, Dye Penetrant. It depends what you are welding. ASME standards give strict rules for welding quality. There are Welding Research Association (WRA) guidelines which interact with ASME and other learned bodies. Additionally there is still Blodgett to look at. My copy works in the dreaded feet and kips but I wouldn't part with it. Find Blodgett at the Lincoln Arc Welding website or on Amazon etc. If you can't see Blodgett on a Consultant's bookshelf, be concerned.

Weld 'thickness' is a function of weld quality, if the quality is right the weld depth is determined by the preparation. ■