Stitch / Intermittent Welding

Stitch welding

 Where to use is the question most of us have.

Let us define it first

• it is the process of welding to base materials in many short sections.
• This process gives a weld less strength
• This keeps the material from warping too much since you use half as much heat
• It is also known as intermittent welding.

According to AWS (American Welding Society), Its defined as Welding that does not require one continuous weld along the length of the entire joint. Intermittent welds are shorter welds, spaced evenly along the joint.

Intermittent weld can be classified into two types namely

Chain Intermittent Weld
            A type of intermittent weld that requires a sequence of welds on each side of the joint that line up evenly with each other..

Staggered Intermittent Weld.

            A type of intermittent weld that requires a sequence of welds on each side of the joint that do not line up evenly with each other.

Welding symbols for Intermittent Weld:

Intermittent Weld Design Conditions as per Indian Standards:

• Intermittent fillet welds may be provided where the strength required is less than that can be developed by a continuous fillet weld of the smallest allowable size for the parts joined.
• The length of intermediate welds should not be less than 4 times the weld size with a minimum of 40 mm. 
• The clear spacing between the effective lengths of the intermittent welds should be less than or equal to 12 times the thickness of the thinner member in compression and 16 times in tension; in no case the length should exceed 20 cm. 
• Chain intermittent welding is better than staggered intermittent welding. 
• Intermittent fillet welds are not used in main members exposed to weather. For lap joints, the overlap should not be less than five times the thickness of the thinner part. 

From the above extracts, we can conclude that it can be used in thinner materials where warping is a major issue and should not be used in main members which are exposed to weather. Depending on the strength criteria and connection cost, we can choose staggered welding.

Our Indian Team.....

Daily we are receiving countless mails, showing pictures of Indian cricketers as barber, milkman, coolie, cook, butcher etc etc. Just answer these questions before we go ahead...

We go to temples, make lots of wishes to god, some of them come true, some don't...will you start burning effigies of gods and goddess.. If god can fall short of our expectations...they are just human beings!!!!!!!

India is still a developing nation; most of us come from average middle class families. Tell me if tomorrow..microsoft,google or sun comes to you and offer you ten times what infy is paying. What will u do????Every one of us is striving for more money..these cricketers are not the family members of TATA n Birlas...like us they do ve every right to make money.

India ranked no.6 prior to start of wc-2007...!!!!!!!!!!if a no 6 team can so easily win the wc....

How many among us are ITians or have come even from top 10 engg colleges of India...(????)but be honest haan...you must have taken all these exams n entrance..after class 12th but u didn't succeed!!!rite as simple as that!!accept ur failure!!!what ur parents did...they started mourning over the dummies kept as your dead bodies..or they also burned your effigies..did ur mother stop giving you food or father stopped giving u pocket money!!!!haan..they backed you..always supported you paid heavy donations and fee to let you complete ur engg and beared all your other expenses till u got the right job!!!!!!these cricketers are our fellow Indians our very own blood...they are going through a rough patch of time so instead of backing them up we are abusing them..

Your mom n dad calls u late in the night ur still at ur office..they say ..son ..go n have ur dinner..work hard..do your best....when u will get salary hikes..promotion..or remember your college days...dad calls u..son why r u getting less marks in every subject...YOUR REPLIES::::::::::"oh common...dad,mom u don't understand..it really tough,only I can understand bla bla ....guys....same is the agony of these cricketers...no one can understand how it feels to be in the middle..n burdened with expectations of a billion ppl....shame on us we hardly live up to expectations of merely two persons(our parents!!!!)!!!!

We produce false certificates,claims to get posted at our desired locations..or if not we will run away to our hometown..on a leave...saying "I am feeling homesick"!!! Remember Sachin...wc-1999 his father died in India...while he was in England he came n rushed back to support and play for his team n country!!!!!!how many of us can even think of this !!!

Lastly it's the mistake made by ourselves that we don't consider a game..just as a game...its we the ppl of India who made these cricketers dummy gods..simply fanatic..thank god fans in Zimbabwe,Canada and Netherlands are not like us or imagine what they would have done to their teams if expecting them to win world cup!!!Try to live up within the spirit of the game...take a game like the way it should be.

Frnz...this is a tough time for our cricketers and their families..stand beside em' support them they badly need it..they are already upset don't add up to their agony n pain..
So please stop forwarding those nonsense mails/jokes on them...

CRICKET is only an entertainment for us...but its LIFE for them...
They always wish more than us to "WIN".

And this is not actually by me... but a extract from a mail i received...

Images from Google Images .. :))