Recent content by etch

Hello Its been a while since i used strontium, but il try and help out. You never said in what form you used strontium, i take it it was in rod or some other al:sr mix. Storage is never usually a problem in this form. I would say that you have either got one or two problems. 1) The wrong...

I am after some information on the method of Air sampling. We have a process where we can conduct both inhalable and respirable dust sampling. I am a bit confused on the subject of using a cyclone and the 50% cut-off point, doe sthat mean to get an accurate sample you would have to have the...

i think AMC, ZUES and a few others supply ingot.

You could always go down the cost of Real-time xray. We used to use it to check high value parts at $800-$1000 per casting, for aerospace. We had the similar problem of wasitn alot of time and possible money machining casting that would subsequently fail at later stages. Turn around times for...

This is a major annoyance for me. Material selection for jobs should be primarily undertaken by the experts ie the person making the component. We have had many times were we politely told customers that the material they required would be too expensive, would not run or would not rpovide...

For this type of run it would have to be sand casting id say.

The first part i cannot help with, but the second i can maybe offer some insight. Alloys with higher silicon content tend to have higher shrinkage. one way to combat this it to shift te eutectic of the alloy to the right, thus allowing a longer freezing range. there are two ways to do this, one...

You never said what the properties were for, sand cast or chill cast?

Must be different over here, its quite common to sue for unfair dismissal, and having two people say there were no provocation against his word it pretty strong case

Well basically Any ADVICE is that, its not a working instruction and certainly not a solution to the persons problems. Being a metallugist, i am happy to help out people where i can, and i think in general its good for your company to do the same, alot of small foundries and companies need...

Wait until its dark, then beat the crap out of him, when you wake up from you dream. you have two choices. one apologise and start looking for new work, or get sacked and both of you go to a lawfirm and sue his ass off for unfair dismissal.

This reminds me of a casting returned to us after fracture. We produced these castings and the engineer and die deisgner failed to put a small radius on an edle giving the casting a stress raiser. the casting was returned to me with a clear fracture along this radius and 13 or 14 crescant...

hmm depends where you are, generally there will be journals like recycling times and metal bullatine, that gives basic prices, these are only guideline as they are massaged by producers and scrap merchants i.e. i would offer to buy from you 20t of scrap cast aluminium. as a metal producer i...

id say it make common sense to use recycled aluminium where possible its generally cheaper, if not totally purer. to give you an insight i used to produce aluminium alloys in Scotland. our customer based went as far as atlanta alloy A380.1, japan, germany, switzerland and most of europe. With...

ok basically the titanuim is usally combined with boron, but not always. the titanium acts as seeding effect, on cooling the titanuim having a higher metling point colls down and acts as neucleating zones, the more titanium the greater the zones. These help promote smaller grains as they...