Walking Beam Furnace

Walking Beam furnaces are utilized for both austenitizing and tempering of pipe. ESG recommends utilizing the inline furnace for austenitizing but recommends the walking beam furnace for the exceptional uniformity they can provide for the tempering process. Walking beam furnace can be built to very large sizes and provide high capacity throughput

ESG’s Walking Beam Furnace provides the highest tempering uniformity achievable to produce some of the most difficult grades. Not all walking beam furnaces provide the same because of the design and the use. In many situations a cold pipe is introduced in one side of the furnace, while the other side of the furnace is attempting uniformity. The heating and soaking needs to be isolated, either by separated and zoned areas or by separate furnaces. This can be done by preheating the pipe prior to entry which eliminates the extreme temperature ranges in the furnace.

We recommend for those attempting some of the higher strength, more difficult steels to have two separate furnaces. The first would heat to within 50F and final furnace soak would provide the required uniformity.The preheating can be done with an inline furnace or induction or the furnace can be built with separate zones to achieve both “heating and soaking” in the furnace.

In ESG's furnace we install ceiling mounted axial fans to produce great uniformity. The furnace shape and size are designed to enhance this movement of air and eliminate any temperature differential. Final differential temperature is 5 degrees or less.

Benefits of the ESG walking beam furnaces for tempering