Hexavalent Chromate

25, October 2018

"At one place the light seemed to be absorbed, at another to give a lingering greeting, at a third to pass cold by; and there was no end to such surfaces and no surface where some effect did not take place.  No part was blank."

Rainer Maria Rilke, Poet talking about Auguste Rodin

We are using an industrial process involving zinc plated passivation to mild steel.  First, you make an object from mild steel, you polish it, you then dip into acid to clean and then dip into Hexavalent Chromate.  There are three different colours, black, blue and golden.  This material we are researching in depth for a new retail project launching in 2019.  We are designing walkways, staircases, seating, joinery and handrails in the material.  All of these many thousands of disparate elements will be made and then shipped to be dipped in the tanks, then delivered to site and then assembled.  All of the elements must be screwed together and not welded because welding on site reacts to the hexavalent chromate and the effect would be ruined.  The added complexity arises because the tank in which to dip the mild steel elements is 1700mm long, 450mm deep and 600mm high.  As a result, we are designing and detailing elements and connections at sizes to enable them to be dipped in the tank.  All screws to assemble these walkways and staircases are being dipped too.  Due to the high levels of complexity in these processes and due to the large spectrum range of finish afforded by the hexavalent chromate, we are ordering one sample of every square hollow section, C-channel, L-channel and perforated plate to drill down into the effect this metal work package will have upon the final project.

Imagine there was no Architecture where some effect did not take place.  No part blank.