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It is to sustain the AS QUENCHED state .

How is call a heat (cool) treatment for alumniniun, when after heated and quenched in water, it shall be put in a refrigeration chamber at a very low temp , at least -29ºC , to stop the Al. ageing. Material thicknes is about 0.125"

I know that in the aeronautical industrie , aluminiun piece are annealed , and to keep it in such state , it shall be kept at low temperature , about -40ºC or ºF for no more than 3 days. I want know which standard cover it , no mater if it is ASTM , or from Europe or from any place. Thanks...

There is any adhesive to join this material, himself, PET+PET.? There is any producer of PET in solid round BARS or TUBES? Thanks in advance

Into the water

If I vent ammonia at it´s gaseous state inside a water tank , what reactions, or elements becomes from it.?? I´m a Refrigeration mechanic , and since the start of the amonnia refrigetarion is working , every body do it with no problem. But now I need to tell my customer what will be happen...

Hi all, thanks for your help.

Hi Compositepro. Guess there is no leak , the volume to be "vacuued" , is 1 liter, the pump displacement is 0.250 Liter , vacuum have to handle soft and slow.

Normally using a piston air compresor,run by a electric motor a vacuum about 3" or 4" Hg absolute value can be reached. A refrigeration compresor reach the same , using air, not at a refrigeration cicle, of course it is not the best to use What could be the minumun vacuum or absolute pressure...

The handle it is only that way , for packagin pourpouse.

Compositepro, I true did the same search , but I did not see it , thanks. By te way , do you know where can I see some details as it is make. I can not get any , I have been searching all day long. But it seem I´m not a good searcher.

At the attachment is a image of a hand operated vacuum pump named "Komovskiy vacuum pump" , do any member ever see or use this kind of pum? I want to know what is the max vacuum it can achieve. Thanks in advance

Usually , when not stated , the LSP name is the CALL Or read at the text screen for some indications.Press F2 after loading it. In my all lisp, always put as the last line. (prompt "type nnnnn to run the dddddd.lsp)

What is the least decompose temperature for a azeotropic sulfuric acid-water mixture.? What is the sulfuric acid-water ratio that have the least decompose temp?

I agree with you, thing are going clear, now. Thanks

Hi Mike , I get it , its the bernoulli theorem. Thanks , you solve my day. Mile-02

Hi Prex , if not so , can you tell me , not talking about a pool. What is a circular vertical thank ,15 m diameter , when it is fill by the botton end. The same used at oil industrie to hold fluids. Is or is not a pipe? Will fluid overflow by its border or not, when the fluid reach the border.

Once I see a graphic and related formula to know flow by the heigth the fluid rising from a open pipe standing vertical its main axis . Any had seen it? Please route mo to it. Thanks in advance

Hi all, thanks again for your post. I have to ask you , please understand my point of view. 1._ It is not a open channel weir. In a open channel, weir it is only one side , 2 sides are the channel border , and the 4th is the water upward the channel, so the the water is constrain in 3...

Ok , guess I made a scaled pool wit a 0.348 weir lenght , no matter what area , assume 0.087 m square. Then I fit a pump and increase flow to have the same overflow I want to have at the 34.8 m weir. I scale by 0.01 or 100 , So what will be the flow for the real pool's pump?