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<blockquote data-quote="Toby" data-source="post: 231002" data-attributes="member: 1509">This type of metal looks like chrome moly or tooling steel, most are used to make guns.&nbsp; It usually looks really close to cast after cleaned.&nbsp; There are a few ways to weld this correctly.&nbsp; Pulse arc spray, tig, or short circuit mig if you are really really good.&nbsp; Let's start with mig, usually an experienced welder will bevel the joint a bit to make sure the weld can be flush or just a hair above flush...but with short circuit mig you have to preheat the hell out of it, especially chrome moly so that is is glowing before you weld it.&nbsp; Same applies for tooling steel due to higher levels of carbon and sulfur with lower manganese levels from the wire.&nbsp; Tig is still preheat but not as much and you can usually get a great weld using a bronze alloy, most will bevel as well to get a good root.&nbsp; Pulse arc spray is hotter and way way faster and you will for sure need a bevel, for the 1 inch of weld this will also require a preheat but not as much as the latter 2 due the fact of the heat affect zone of pulse.&nbsp; It is very similar to a cast iron block on a tractor, some guys can weld it and some guys can't. My profession is certified welder for all of the applications above, but I don't happen to live in Bismarck, wish I did.</blockquote>

[QUOTE="Toby, post: 231002, member: 1509"] This type of metal looks like chrome moly or tooling steel, most are used to make guns. It usually looks really close to cast after cleaned. There are a few ways to weld this correctly. Pulse arc spray, tig, or short circuit mig if you are really really good. Let's start with mig, usually an experienced welder will bevel the joint a bit to make sure the weld can be flush or just a hair above flush...but with short circuit mig you have to preheat the hell out of it, especially chrome moly so that is is glowing before you weld it. Same applies for tooling steel due to higher levels of carbon and sulfur with lower manganese levels from the wire. Tig is still preheat but not as much and you can usually get a great weld using a bronze alloy, most will bevel as well to get a good root. Pulse arc spray is hotter and way way faster and you will for sure need a bevel, for the 1 inch of weld this will also require a preheat but not as much as the latter 2 due the fact of the heat affect zone of pulse. It is very similar to a cast iron block on a tractor, some guys can weld it and some guys can't. My profession is certified welder for all of the applications above, but I don't happen to live in Bismarck, wish I did. [/QUOTE]

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