Mesh belt carburizing furnace is a continuous quenching and tempering heat treatment furnace of mesh belt type. It uses intermittent advancing mesh belt to pass the workpiece through a temperature controlled heating zone, then falls into the quenching oil tank, and the product automatically taken out by the elevator is cleaned before being sent to the continuous quenching and tempering heat treatment equipment of the tempering furnace. It can perform heat treatment processes such as carburizing, quenching, tempering, thin-layer carburizing, and carbonitriding under controlled atmosphere. Suitable for carburizing heat treatment of mechanical parts such as screws, hardware tools, bearings, chains, etc.