What grade steel we housings made from?
#3
There are 2 rotor housings and they are made of aluminum and a front, intermediate, and rear side housings that are made of steel.
Obviously, I am talking about the steel housings... Especially, since you dont nitride the aluminum rotor housings.
Obviously, I am talking about the steel housings... Especially, since you dont nitride the aluminum rotor housings.
#7
(blank)
iTrader: (1)
"Insert" is a wrong word there. It's more like a chromium plating on I believe Nickel. Insert would be more like a steel/chromium insert used for cylinders in a piston engine block.
Oh, and regarding the "iron" cast housings, I'm pretty sure they're steel (enough carbon content there). Someone call an engineer...
Oh, and regarding the "iron" cast housings, I'm pretty sure they're steel (enough carbon content there). Someone call an engineer...
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#11
the housings are more like a sleeve then chrome plating go to Mazdatrix.com and click the cool things link there is a link there to see how rotaries are built they use a sheet metal sleeve and cast the aluminum around it... now for the sides they are cast iron
http://en.wikipedia.org/wiki/Cast_iron
the second paragraph says that the carbon content of cast iron is 2.1 or 4% while ferrous alloys with less carbon content are considered carbon steel...
if your getting them re-nitrided there are some shops that do specific nitriding for rotaries but if you tell them its cast iron they will know whats going on because cast iron is cast iron...
http://en.wikipedia.org/wiki/Cast_iron
the second paragraph says that the carbon content of cast iron is 2.1 or 4% while ferrous alloys with less carbon content are considered carbon steel...
if your getting them re-nitrided there are some shops that do specific nitriding for rotaries but if you tell them its cast iron they will know whats going on because cast iron is cast iron...
#13
Red Pill Dealer
iTrader: (10)
They are cast iron. Just like an iron piston engine block. They will break but not bend. They are also nitrided on the wear surface. Cast iron. That is what they are made of.
#14
Crash Auto?Fix Auto.
iTrader: (3)
FWIW, Mazdatrix makes the "irons" out of aluminum (they make new blanks with no ports) and the new 16X rotary engine will also utilize aluminum "irons".
I think that gives an indication of the versaility of the material used for the plates. I however can't comment on the composition of the OEM plates since I don't know.
I think that gives an indication of the versaility of the material used for the plates. I however can't comment on the composition of the OEM plates since I don't know.
#16
click my wikipedia link it tells you the technical specs on cast iron you cant get the % number exactly because every time the metal us smelted the % is a little different!! why do you need to know the % so bad?
#18
The company I am talking to about nitriding the housing wants to know the exact composition of the iron/steel to be able to do the best job is what they told me. They said if the housings are high carbon content iron they think Ferritic Nitrocarburizing (FNC) would be a better option.
#19
well they are high carbon iron what I would do is give mazdatrix a call and see what there professional opinion is, they might know the exact composition, but cast iron is high carbon by nature 4% of carbon is like turning steel into glass good high carbon steel has a carbon content of around 2.0% it takes 1.8% of carbon to turn iron into steel ad another .65% and it will turn it into high carbon steel, so what does this guy consider high carbon because the sides being made of cast iron denotes they are high carbon.
I hope this clarifies things, like I said earlier though I would look into talking to one of the major rotary rebuild shops like mazdatrix.com pineappleracing.net (pineappleracing.com is not up) or atkinsrotary.com see what they think where they might suggest to go and what they have had success with.
I hope this clarifies things, like I said earlier though I would look into talking to one of the major rotary rebuild shops like mazdatrix.com pineappleracing.net (pineappleracing.com is not up) or atkinsrotary.com see what they think where they might suggest to go and what they have had success with.
#20
FWIW, Mazdatrix makes the "irons" out of aluminum (they make new blanks with no ports) and the new 16X rotary engine will also utilize aluminum "irons".
I think that gives an indication of the versaility of the material used for the plates. I however can't comment on the composition of the OEM plates since I don't know.
I think that gives an indication of the versaility of the material used for the plates. I however can't comment on the composition of the OEM plates since I don't know.
you do realize those things cost like 3X the cost of oem ones and if he is having his re-nitrided then he is looking to save some money no?
#21
Lives on the Forum
Most people wouldn't care the classification of cast iron / steel.
Only the engineers and geeks would care about that kinda stuff.
I don't think I've even seen a spec given out by Mazda.
Nitriding or "gas nitriding" can be done to almost any surface...including aluminum.
I believe the Racing Beat aluminum side "irons" are nitrided also?
Actually, that stainless steel liner is considered an "insert".
It's not a plating.
The chrome over the stainless steel liner is considered "plating".
Technical specs on this can be read in SAE papers and also in the Jack Yamaguchi RX-7 book.
If you really insist on getting the exact composition of the cast iron why not send it out for material analysis?
I doubt you'd get a solid answer from asking us...
-Ted
Only the engineers and geeks would care about that kinda stuff.
I don't think I've even seen a spec given out by Mazda.
Nitriding or "gas nitriding" can be done to almost any surface...including aluminum.
I believe the Racing Beat aluminum side "irons" are nitrided also?
Actually, that stainless steel liner is considered an "insert".
It's not a plating.
The chrome over the stainless steel liner is considered "plating".
Technical specs on this can be read in SAE papers and also in the Jack Yamaguchi RX-7 book.
If you really insist on getting the exact composition of the cast iron why not send it out for material analysis?
I doubt you'd get a solid answer from asking us...
-Ted
#22
Most people wouldn't care the classification of cast iron / steel.
Only the engineers and geeks would care about that kinda stuff.
I don't think I've even seen a spec given out by Mazda.
Nitriding or "gas nitriding" can be done to almost any surface...including aluminum.
I believe the Racing Beat aluminum side "irons" are nitrided also?
Actually, that stainless steel liner is considered an "insert".
It's not a plating.
The chrome over the stainless steel liner is considered "plating".
Technical specs on this can be read in SAE papers and also in the Jack Yamaguchi RX-7 book.
If you really insist on getting the exact composition of the cast iron why not send it out for material analysis?
I doubt you'd get a solid answer from asking us...
-Ted
Only the engineers and geeks would care about that kinda stuff.
I don't think I've even seen a spec given out by Mazda.
Nitriding or "gas nitriding" can be done to almost any surface...including aluminum.
I believe the Racing Beat aluminum side "irons" are nitrided also?
Actually, that stainless steel liner is considered an "insert".
It's not a plating.
The chrome over the stainless steel liner is considered "plating".
Technical specs on this can be read in SAE papers and also in the Jack Yamaguchi RX-7 book.
If you really insist on getting the exact composition of the cast iron why not send it out for material analysis?
I doubt you'd get a solid answer from asking us...
-Ted
The guy wanted to know close to the composition because he wanted to try that FNC process on the housing instead of nitriding. Apparently, it is better for sliding friction than nitriding and will warp the housing less.
#23
Lives on the Forum
#24
what part of this didnt you understand? i doubt that everyone on the forum has seen this thread, so there may be someone here that knows the answer. also, i guess according to you there are no geeks or engineers on this forum, that might know the answer?