Yes, cast iron enamel cookware is dishwasher safe! Cast Iron is extremely tough andd very durable!
Paint or enamel can protect iron from rusting.
Dishes and pots lined with enamel are not porous on the cooking surface and therefore do not need the oil seasoning that cast iron does.
There is no enamel, they are made of porcelain.
In 1883 he enamelled a cast iron horse trough, so yes, he invented the enamel bathtub.
The body when making teeth. Factories making iron bathtubs.
Yes, they are. The heat is distributed evenly, something usually associated with cast iron. And then, they are easy to clean, because nothing sticks on enamel. The enamel is a nonreactive surface, so it would not react with your food, changing its chemical or nutritional characteristics. And furthermost, if you take good care of your cookware you can have it for ages to come.
If it's a name brand, send it back to the manufacturer. If not... if it's just a chip in the enamel, you might be able to use the Aga enamel repair kit (I have not tried this). If it's a hole through the cast iron, I don't know of a way to repair it, although a blacksmith might be able to do it!
Cast iron enamel cookware can handle very high temperatures but the enamel layer can be delicate and susceptible to scratching. So, after washing, make sure you gently hand dry with a soft towel and avoid scratching it on the prongs of the dish washer. Also, when cooking in the enamel cookware, use a wooden or plastic spatula instead of a metal spoon to avoid scratching or damaging the enamel layer.
According to the article on Fine Cooking, enamel cast iron should be allowed to cool before washing to avoid cracking. Soaking for fifteen to twenty minutes can help loosen food residue. Finally, avoid using steel wool, which can damage the enamel.
The biggest advantage to an enameled cast iron pan is you don't have to prime the pan, You can also wash the enamel pan after each use, unlike non-enameled iron pans. The biggest con to using enameled cast iron pans is that the enamel contains heavy metals and can be bad for your health if pieces start to break off.
Warm soapy water and a soft, non-abrasive scrubber (softer than the glass/enamel the pan is coated with). Soak it if you need to. Absolutely don't use steel wool.