Pit Type Furnaces for Tempering

Product Introduction

Our Pit Type Furnaces for Tempering are specialized vertical heat treatment systems designed for the precise and uniform tempering of long, heavy, or vertically oriented components. Tempering is a crucial post-quenching heat treatment process that reduces the brittleness of hardened materials, improves their toughness and ductility, and relieves internal stresses, making them more suitable for their intended applications. These furnaces are installed in a pit below floor level, allowing for easy loading of tall parts by overhead cranes. The vertical design ensures uniform heating and controlled cooling, which is vital for achieving consistent mechanical properties throughout components like shafts, rods, and tubes. Ideal for industries requiring high-quality tempering of elongated parts, our pit type tempering furnaces provide exceptional temperature uniformity and precise control over the tempering cycle, ensuring optimal material performance and reliability.

Technical Specifications

Working Principle

Pit type furnaces for tempering operate by reheating previously hardened (quenched) components to a temperature below the critical point, holding them at that temperature for a specific duration, and then cooling them. This process reduces the brittleness and internal stresses introduced during quenching, while improving the material's toughness and ductility. The components are loaded into a basket or fixture and lowered into the pit furnace. The furnace then heats the parts uniformly to the desired tempering temperature. After the soaking period, the components are slowly cooled, often within the furnace or by controlled air cooling, to achieve the final desired mechanical properties. The vertical design of the pit furnace ensures excellent temperature uniformity for long components, which is crucial for consistent tempering results and preventing distortion.

Process Flow

Solving Customer Pain Points