• 0 Posts
  • 12 Comments
Joined 2 years ago
cake
Cake day: June 10th, 2023

help-circle


  • I’m a mechanical eng turned software, computing and the like are super visible but there’s been a huge amount of advancement in physical things in our lifetime, Steel in particular. By no means an expert, some of this I’ve been out of the industry for a while so just operating on memory, totally welcome any corrections!

    I’m not a metallurgist, but worked with them, there’s lots of grades out there but some of the stuff being used in automotive is seriously interesting (I think they’re boron grades but I can’t recall), needs specific treatment like hot stamping but they can easily hit into the 1-2 GPa range for yield strength once it’s processed. It’s allowed material to be rolled thinner for the same part strength so you end up with lighter vehicles.

    Coatings too have changed a lot, non-chromium passivation is a thing, galvanised materials are no longer just zinc + a bit of aluminum, there’s aluminum + silicon coatings that are supposed to offer decent corrosion resistance at high temperatures, those fancy automotive steels get coated in it for things like mufflers. Construction there were zinc+magnesium coatings starting to show up, supposed to be resistant to coating damage.

    Processing has changed a lot in a century too, steel is substantially metallurgically cleaner these days, probably actually cleaner too with more electric arc furnaces and hydrogen direct reduced iron.

    It’s oldish these days but pipeline inspection was increasingly using Electromagnetic Acoustic Transducer (EMAT) tools when I worked in that field. It let you do ultrasound inspection of steel pipes without needing a liquid medium, so things like cracks and material defects that are hard (or nearly impossible) to find using Magnetic Flux Leakage tools are a lot more accessible to gas pipeline operators as they don’t need to do things like plan around liquid batching.






  • I’ve always felt a bit off about the current NDP leadership, overtly negative blamey messaging, conflating federal and provincial responsibilities. The party as of 2021 was keeping all of the campaign reimbursements instead of that going to the candidates. They seem to have no local presence, Tories and Liberals have door knocked and sent out information multiple times in the last year, I don’t even know who my federal NDP candidate is locally. Provincially, our NDP person is super active and actually responds to me when I contact them so it’s not just an NDP thing.

    I really disliked that they supported bill s-210 that’s the age verification bill, historically the NDP seemed to be pro privacy, disappointed at that apparent departure.





  • morbidcactus@lemmy.catoCanadaPolitics@lemmy.caPP inevitable?
    link
    fedilink
    arrow-up
    8
    arrow-down
    1
    ·
    3 months ago

    Writ’s not been dropped, only poll that matters is the one on election day, this shit happens every single cycle, polls tend to change a lot once there’s actual campaigning. Don’t preemptively give up and accept a Tory government as an inevitability.

    The Tories are out door knocking and seemingly on the edge of campaigning now (seen Tory lawn signs for remembrance day) why aren’t the NDP or grits? We seemingly let the right control messaging all the bloody time and just constantly play catchup.