Steel Plate Quenching and Tempering Furnace Boosts Performance of Forged Steel Components

Global heavy machinery, energy equipment and aerospace forging manufacturers are upgrading post-forging heat treatment lines, with intelligent roller-hearth steel plate hardening and tempering machine emerging as core equipment to stabilize the comprehensive mechanical properties of forged steel blanks. As high-end forged parts face stricter standards for strength, toughness and dimensional uniformity, the integrated Q&T furnace system optimizes the full-chain forging process, effectively solving long-standing industry pain points including uneven grain structure, residual forging stress and unstable hardness fluctuation.

Forging is the core forming procedure for heavy-load steel workpieces. Under high-temperature hammering or hydraulic pressing, steel blanks realize grain refinement and density improvement, yet severe internal thermal stress and inconsistent metallographic structures remain after hot forging. Without standardized quenching and tempering treatment, forged steel plates tend to deform, crack during machining, or fail to meet fatigue resistance standards for pressure vessels, mining machinery and automotive forging parts. Traditional separated quenching tanks and independent tempering ovens feature low temperature control precision, poor cooling uniformity and discontinuous production flow, which cannot match the mass production demand of modern forging workshops.

steel billet heating process

The modular quenching unit is the core innovation matching forging production. Adjustable slit spray nozzles deliver polymer quenching medium at dynamically regulated flow rates, realizing staged rapid cooling for forged plates of different thicknesses. Compared with single water quenching, this flexible cooling mode greatly reduces quenching distortion and cracking risks for large-size forged steel plates, avoiding scrap loss caused by excessive thermal shock. After full martensite formation, plates are automatically conveyed into the tempering furnace without offline transfer, realizing seamless connection between quenching and tempering procedures.

In addition to performance improvement, the furnace system delivers remarkable energy-saving benefits critical to forging enterprises’ green transformation. Waste heat recovered from tempering flue gas preheats incoming forged blanks, cutting overall fuel consumption by 28% compared with conventional split heat treatment equipment. Full automatic PLC operation minimizes manual intervention, lowering labor intensity in high-temperature forging workshops. Real-time data monitoring tracks furnace temperature, quenching flow and conveying speed, enabling traceable heat treatment records for every batch of forged steel plates, complying with strict quality inspection requirements of energy and aerospace projects.