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The Working Process Of Jaw Crusher Before Starting

Personally i think id be pre-heating the whole jaw to at least 350 degf 175 degc before starting to weld, not going above 450 degf 225 degc interpass temperature, and when finished welding lag the whole thing in thermal blankets heated if necessary and cool it at no more than 50 degf 30 degc per hour until its at ambient temperature.