8 Questions 6 Answers 0 Followers
Questions related from Mehdi Taherishargh
I have two 4140 bolts with the same size but different microstructures. One is pearlitic and one is martensitic. The bolts are under high stress cyclic loading conditions. Which one is expected to...
10 October 2019 3,642 3 View
I have solution treated some of my samples, made of A356 Al alloy, at wrong solution temperatures (515 C instead of 540 C) for 16 hours and then aged them at 160 C for 10 hours. I wanted to know...
05 May 2014 9,575 4 View
I want to dissolve a kind of SiO2-based glass (with more than 70% wt SiO2). As far as I know, HF acid is the best option for dissolving the silica but it is expensive. Are there any other...
10 October 2013 8,102 10 View
As a marginal part of my project, I should melt down the PbO along with 8 wt% SiO2 to make a high density glass with low viscosity. But, PbO is so toxic. I wanted to know the best way of mixing...
05 May 2013 4,660 15 View
I need a glass with very low viscosity. The glasses which typically are used for glass works have very high viscosity at high temperatures. I want my glass to be as fluid as honey at 1000 Celsius.
04 April 2013 3,327 13 View
In our work we need a hot working steel with the service temperature of 1100 Celsius. Actually T300 ma be a good candidate but I am looking for a cheaper one.
03 March 2013 9,403 6 View
I want to know if we increase the temperature more than melting point for a thermoplastic polymer such as LCP or PEI or polyimide, what happens to them? Are they molten down like metals? Do they...
02 February 2013 2,720 3 View
I am looking for a thermoplastic polymer which is stable in high temperatures up to 650 C. It should have a melting temperature greater than 400 C. It should solidify reasonably fast as the...
02 February 2013 332 8 View
