1.2379 is a high-carbon, high-chromium cold-work tool steel widely used where wear resistance and dimensional stability are critical.Typical applications include stamping dies, cutting tools, forming tools, and other components with complex geometries that must retain hardness and accuracy after heat treatment.

1.2379 steel hex bolts after vacuum oil quenching treatmentBecause of its alloy composition, 1.2379 is highly sensitive to heat treatment parameters.Conventional processes often struggle with distortion control, surface oxidation, and inconsistent hardness.Vacuum oil quenching addresses these risks by combining a controlled low-oxygen environment with stable heating and rapid, uniform quenching.

Typical Vacuum Oil Quenching Process Logic

For 1.2379 steel, the vacuum oil quenching cycle generally consists of staged preheating, controlled austenitizing, oil quenching, and multiple tempering steps.This sequence is designed to reduce thermal stress, ensure full martensitic transformation, and stabilize the final microstructure.Precise temperature control and repeatable timing are critical throughout the cycle to achieve consistent mechanical properties across batches.

Equipment Requirements for 1.2379 Quenching

Processing 1.2379 reliably places specific demands on the vacuum furnace itself.
Key requirements include stable vacuum performance, accurate temperature uniformity, fast chamber transfer during quenching, and programmable process control.Dual-chamber vacuum oil quenching furnaces are commonly used to separate heating and cooling functions, improving efficiency and process consistency.

Only the core process logic and equipment considerations are outlined here.
Detailed process parameters, furnace configuration data, and practical application results are covered in the full technical article.

Original article:
Application of vacuum oil quenching furnace on 1.2379 steel