The document describes a slag raking machine used to remove slag from molten metal in steel plants and other industrial furnaces. The hydraulically operated machine has a raking arm that can move horizontally, rotate from side to side, and move up and down to scrape slag off the surface of hot metal in a ladle. The machine is designed for sturdiness and can skim slag over a distance of 5,000 to 10,000 mm at a speed of 1.2 m/s.