The Core of Durability Lies in the Heat
At Boxing, we employ a three-stage heat treatment process to ensure each cutting tool achieves a perfect balance of strength, toughness, and structural stability.
Oil quenching or high-frequency induction selected based on blade size/thickness
Temperature precision within ±3°C (industry average ±10°C)
Purpose: to convert the structure to fine martensite
Two-stage tempering with tightly controlled dwell time
Reduces internal stress, transforms residual austenite, and enhances impact resistance
Temperature fluctuation kept within ±5°C (industry standard ±15°C)
Cooled in liquid nitrogen at -196°C for 8-24 hours
Refines grain structure, precipitates ultra-fine carbides, and minimizes residual austenite
|
Device Name |
Features |
Brand / Model |
|
Vacuum Heat Treatment Furnace |
Oxygen-free environment prevents decarburization |
Aichelin High-Vacuum Type |
|
Rockwell Hardness Tester |
Accurate hardness testing |
Mitutoyo HR-530 |
|
Metallographic Microscope |
Grain structure observation / Residual phase analysis |
Olympus GX53 |
Surface too brittle → easy chipping
Incomplete quenching → blade softens or deforms
Under-tempering → stress concentration → early cracking
Excessive retained austenite → cold-state deformation and instability after use
BOXING eliminates these risks through an SPC-based heat treatment monitoring system and microstructure inspections, ensuring zero batch deviation.
Customized heat treatment curves for extreme environments (e.g., 4,000m altitude, -30°C temperatures).
Fatigue life assessment reports available — including high-magnification metallographic images.
We also provide “secondary heat treatment” services to upgrade customer blades by optimizing tempering curves.