⟩ What future saint ws originally taken to Ireland as a slave in 405 A.D.?
St. Patrick.
St. Patrick.
How much gold concentration should be in the organic phase (DBC) before reduction by oxalic acid solution? Is it effective on purity of gold in reduction step? What is the ratio of DBC to oxalic acid solution in this step?
How is solution annealing carried out? What type of furnace is required? Does one need to be heat in a Salt Bath?
Will aluminum alloy like 380 or 356 settle? Meaning while in "Liquid form" above melting point will the heavier elements like copper, Fe, Silicon, zinc etc. settle to the bottom of the liquid/molten aluminum after a period.
How can you find out what kind of stainless steel was used in making a stainless object?
What is the grain size of lead as an element and as an alloy such as lead tin alloy?
We make aluminum moulds by press casting, can u suggest any thing so that the moulds should shine after casting?
What is the difference between plaster used in gold investment casting and ceramic used in the process of investment casting of automobile engine parts and turbine blades etc. when both are used in the lost-wax method?
Does the extrusion process for A355 AND A356 alloy effect on the amount of impact energy?
Does case harden steel properties detoriates over time? Especially for guns, parts like bolt carrier, the brand new parts has been kept for 10 year and properly oiled. I am worried about its surface hardness to take the blow during firing.
How is metal heavy?