Tube Expansion

No one can help you.

You give no useful information.

Read the machine manual. You do have a manual, correct. And a real machine to use.

If yes, give the details.

We can't read your mind.

The answer is PIE ARE SQUARED!

Good Luck, Old Salt

NO NO! Pie are round, cake are square.

What machine is it and where is the torque coming from???

All you are trying to achieve is no leaks at the test pressure. I'd leave it to those practised in this art.

I aasume, you are a mekkanical designer. Better quit designer job today itself and find a job in production dept. or QA/QC Dept. to see what is happening in real manufacturing world.

Clearly you have to give us more context.

Asking for setting values on a machine that we dont know what it is (other than it seems to be a tube expansion machine) is like asking for the torque rating of the engine from a car.

Which car you might ask. Exactly which machine is it?

Can you give me the tyre pressure settings for the above car please?

Where is the torque coming into play when a pipe expansion should be achieved by pull force for an expansion cone.

What settings are needed?

Tube rolling (expansion) into tubesheets is a specialty that depends on specific design of the chosen method, including grooves (if any), hole roughness (if relied on), sealing elements such as O-rings (if any), material compressibility, return flanges on tube ends, etc.

These elements can be calculated from first principles, but I think it is more usual to follow advice from rolling-tool vendors. RTFM, for one thing, but be prepared to understand the principles involved.

The OP is asking decent questions, but so far it seems that none of the repliers has experience with tube rolling.

This may be useful

That might be useful, but only if readable.

It won't matter to the OP.

Dear Mr.libin babu,

Tube Expansion - You have lot more details in the following links. Pl. open the link and you will find answer for your doubts.

https://www.google.co.in/?gfe_rd=cr&ei=pw4EVLSGC8aFoAPikYLQDA&gws_rd=ssl#q=*tube+expansion *

http://www.sugino.com/site/qa-e/exp-technical-strongpoint01.html Cutting High Pressurization Parts Washing and Deburring Drilling and Tapping Machining Process Tube Expansion and Pulling Surface Property Modification

TUBE Expn RESIDUAL STRESS:

http://www.dailymotion.com/video/x6vcd7_hydraulic-tube-expansion_news

I believe the above links, will be useful.

DHAYANANDHAN.S

thank you all. I got some real inoformation