Like bob said when an aluminum oxide wheel contacts carbide the carbide acts like a dresser and wears away the wheel, not the carbide.
A diamond wheel will grind both steel and carbide but will be slow and cause a lot of wear to the diamond wheel,
A green wheel will grind both steel and carbide but may not give the keenest edge on the carbide. I also don't like a green wheel for this kind of job.
With the SG you might best use an aluminum oxide wheel to get the steel flush with the carbide and then grind a little more with a diamond wheel. Grinding with coolant best when using the diamond wheel.
If the carbide is highest then diamond wheel down to the steel, and continue to grind a little steel.
Oh, and grinding or rubbing carbide with aluminum oxide will cause a lot of heat perhaps cracking the carbide or melting the braze holding it.
*If you had to grind .003 off that side and used a diamond wheel perhaps 100-120 or 220 grit diamond with using coolant it would be an ok job, but slower than you would grind just steel with an AO wheel. A 320 diamond wheel would be very slow. With any of those wheels grinding dry would overheat and be very slow.
Use strip braze cut to about exact size, flux, and a small sliver of silver, you can expect the braze height to be very constant (I think .005 but forget for sure) Once you get the braze height mastered you can braze and get only .002 of carbide to grind.
Water boil the brazed parts so that will remove the rock hard braze flux so you don't have to grind it off. (that boil will blacken the steel)
I would leave a little space at the sides of the carbide to fill with braze.
Make cherry red till the carbide seems to be floating, slide it a little, then hold it in place and take heat away to cool.
Don't get any fingerprints on the carbide, the steel, or the braze -> or it may not stick.
Bruce, will this be a one up/few up of a production job?
Carbide comes in different grades for cast iron/steel or aluminum. The cast-iron grade for wear resistance and a shock resistance/ the steel and aluminum grade for cutting steel or aluminum.
I would grind that carbide angle first with just the diamond wheel.