What type of ceramic are they made of? There is lots of different type of ceramics.

ever heard of silicone nitride?

 

What are you talking about? Ceramic brake pads? You need to specify.

 

oh, apex seals

 

$1,000+ for a set of six for one engine, last time I checked...
KA-CHING!


-Ted

 

In relation to the iron/aluminum/w/e material the stock apex seals are made from, any ceramic will be much, much stronger than them.

GG chatter marks?

 

^ zomg ima go bake my own out of porcelain then brb!!

 

no1 gave me an answer

 

Ever heard of "proprietary"?


=Ted

 

You think people would give away thier compositions for thier apex seals?

Why not call up Atkins and ask them for thier recipe

 

Various seals have been tried, among them, those made of Si3N4 (silicon nitride), SiC (silicon carbide), alumina (Al2O3), zirconia (ZrO2), TiC (titanium carbide), and TiC-graphite composition (titanium carbide graphite composition).

Of those, TiC 15wt% graphite composition has the lowest wear rate. The TiC-graphite compositions overall have self-lubricating characteristics and exhibit superior sliding characteristics.

Yes. The R26B used Si3N4.

 

ceramics are anti frictional, they are no stronger than the base they are made out of, they will last a fair bit longer but they will break just like any seal will if you detonate hard enough.

 

I think nrs seals are silicone carbite and silicone nitride.. So is that the reciept? silicone nitride?

 

r26b used si3n4 %100 pure? hot pressed?

 

who knows and who cares.

 

because they r not worth $1000-$2000, i need to find out the properties so that i could make some for all rx7 owners in the world

 

please don't

 

well then you need to do some homework, people don't do research and development for other people to steal their ideas and make a buck off it themselves at their own loss.

this thread has little to do with the second gen RX7, it should have been opened in the general section.

 

No offense, but if you plan on making seals, you shouldn't have to ask these questions.

I got my info from

R & D on Functional Structural Ceramics (Application to Sliding Parts)
Nippon Steel Technical Report No. 59 October 1993; pages 37-43
Masanori Ueki

 

This was as almost entertaining as Rotary Noob's thread on fabricating FRP parts...


-Ted

 

im feeling left out, i want to start a "how to make a full titanium body" thread

 

that was a retarded comment

 

u need to make a titanium brain

 

You obviously have no idea how much R&D goes into designing a seal. Its more than just copying the shape.

 

I hope everyone is taking notes on exactly how to NOT develop a product. I mean I spent 4 years doing R&D, prototype development and extensive testing when all I had to do is come on here and ask you guy's how it's done! If the guy can't even afford a set of ceramic seals, we should trust him to make them for us?

Maybe you should get into Police work. You can run down the street, point at a house and say the bad guy's are in there.

Hey Betty Crocker, go back to school, get your GED, pick up an easy bake oven and start pumping out the ceramic seals. I'm sure the masses will be lining up to buy them from you.

If you guy's want a serious quality product designed and developed with the best materials and processing you know where to find me.

 

oh please, u worried that no1 will buy seals from you anymore.