I'm fixing up a 96 Cherokee I'm cleaning out all the rust on the interior I cut out some areas and cleaned it out real well then hit it with rust dissolver and washed it out real well then I did some welding for the first time. I have 3m sealant for cars that I'm gonna go over the welds with that after I paint it. How do my welds look I've been trying to get it as clean as possible with the grinder and making sure no light shines through

 

Gas shielded or flux core mig?

I see a lot of splatter and black soot? you need very clean metal to weld on, no rust converter, no rust, no paint. was any present. Note that the bottom side must also be clean.

looks like some grinding has been done? but is appears you do have a lot of build up of weld material. welding sheet metal can be a trick, do practice of some same thickness scrap. you may need more heat, with reduce wire feed speed.

one really helpful trick to prevent burn thru on thin metal is to place a chuck of copper up against the backside of the steel. this will pull the heat out so you wont burn thru, the steel will not stick to the copper. you can even fill holes in the steel with the copper backing block.

but over all this is a nice first go at it.

clean clean clean. welding needs clean surfaces, including the backside. the heat will cause contaminates to gas and dirty the weld

if your weld bead is not wetting the metal well i.e. beads up, then you have too low a heat, and or dirt on the metal.

all that black around the weld looks like contamination burning.

rust needs to be removed from the weld area, not converted, but removed. converted rust is usually an iron phosphate, and that dont weld well.

get some same thickness metal for practice. you are doing good, just work on the technique more and clean clean clean. on the scrap, play with the heat and feed controls.

many good youtube tutorials on metal welding autobody metal exist.

have fun

 

Those photos are not clear enough to see the welds themselves and to answer your question properly. However, the black soot indicates you're doing something wrong. Flux core or solid wire? If solid wire, you are using shielding gas, right?

 

PSA..

Obviously we're on a learning curve here and that's fine but to possibly reduce the number of future threads:
Assuming OP is using some sort of MIG machine make sure the ground clamp is tightly clamped to an absolutely clean place that's as close as possible ( same hunk of body) to where you are welding. If the ground path starts wandering around you could convert the PCM /TCM into paper weights

 

It's a flux core the surface is just bare metal with some weld through primer sprayer on. The rust converter was something you clean off. All good advice I didn't know I should clean the metal underneath. I'll get better and learn more as I go. Really as long as I can get the panels in and make it watertight I'll be happy

 

It'll be fine. Just remember clean,clean and more cleaning! I can't stand flux core as it's messy. Was the rust holes caused by a water leak and did the leaks get found it fixed? I cut out my floor pans and welded new ones in of course after I found and fixed about 3 leaks. Used weld thru primer for extra protection where I welded.Also that area I coated with either black bullet or POR-15 top and bottom and painted floor with tractor paint from Tractor Supply (Majic brand) as that's some good stuff!

 

I am not a welder but I get the feeling that your response contains lots of useful information. I would like someday to get a machine which I know I will need for my 1990 XJ.