Norinco Type 97 Aluminum Receiver
- Thread starter faizi
- Start date
Mumbles Marble Mouth
CGN Ultra frequent flyer
- Location
- Lower Mainland
They use MSG as its alloying element.
I haven't heard of any. The startup machinery would be very expensive I'd imagine. But production cost should be low.
That Syadedefensejournal article doesn't make any sense . To make MIM, it needs metal powder for sintering. 6064 T6 cannot be make in powder, because by the very definition of "T6" means the alloy is heat treated and tempered as a plate or extrusion.
The article is not technically right and I don't believe it knows what it is or how it is made really. I won't trust what it is said.
F22_RaptoR
CGN Ultra frequent flyer
- Location
- Edmonton, Alberta
Well, you can heat treat a T-0 (un-treated) Aluminum which is what you get when you heat it past its heat treated stage. Just like they heat treat a forged 7075 receiver, it's not T6 until it goes through the heat treatment after it's forged (as for the forging heat will kill any heat treatment in the piece anyways)
Now as for the article; I do agree it makes zero sense. The size and complexity of the part makes zero sense to use MIM (which is great for little parts like safties and trigger components)
An investment casting? Yeah okay; but even in today's manufacturing a forging (which Norinco is already set up for: The M305, 1911 clones etc..) or even billet makes more sense to use.
The CQA is a forged piece, end of story. I've seen a ton of them in person, and they have a 1/8 inch thick "forging line" on unfinished parts of the lower: http://sadefensejournal.com/wp/wp-content/uploads/2014/05/cqa4.jpg
If they use a casting or MIM the "seam" from where the mold pieces come together are very fine, and sometimes difficult to see. Also, you'd see the ejector pin marks on where the ejectors for the wax mold or the MIM machine pushed it out.
So in the case of the T97, I'd put dollars to doughnuts it's forged or billet as well.
I think from taking a look at the T97 receiver it looks forged. Type? No idea.
I could still see a MIM lower. I have light grind marks on the side of mine. Could have been from pin marks being removed.
If I had a sample I could check but not worth wrecking a lower for.
I could still see a MIM lower. I have light grind marks on the side of mine. Could have been from pin marks being removed.
If I had a sample I could check but not worth wrecking a lower for.
Chinese metallurgy= sum- ting- wong
