Induction hardening lets us harden exactly the surface that needs it; a bearing journal, a gear tooth, a shaft. While leaving the core tough and ductile. Because we design and build our own inductors in-house, we can match the coil geometry precisely to your part, controlling case depth to tight tolerances even on complex or asymmetric profiles. Cycle times are short, distortion is minimal, and every part is scanned to confirm case depth before it ships.
Every induction hardening job is only as good as the coil that shapes it. Our in-house design and fabrication team builds custom inductors; including flux concentrators for complex geometries matched precisely to your part profile. This is what lets us hold tight case-depth tolerances on shapes that off-the-shelf coils simply can't handle.
Hardening transforms the microstructure to martensite for maximum wear resistance, and tempering brings back the toughness needed so the part doesn't become brittle in service. We tune both stages together; the austenitising temperature, quench severity, and temper cycle to hit the exact HRC range and mechanical properties your drawing calls for, on components ranging from small precision pins to heavy gear blanks.
Before any component is treated, we verify exactly what we're working with. Our lab runs full mechanical and chemical characterisation: tensile and impact testing, creep and fatigue analysis, optical emission spectrometry, and detailed microstructural examination under metallurgical microscopes. Every result is logged against the applicable standard, so you know precisely how your material will behave before it goes into service.
Our furnace floor runs controlled-atmosphere processing across multiple furnace types, each fitted with real-time temperature and atmosphere monitoring so every cycle is repeatable and fully documented. Whether you need a single prototype run or a scheduled production batch, the thermal profile is built around your material and geometry; not a one-size-fits-all recipe.
Annealing softens material, relieves internal stress, and restores ductility that's been lost through cold working or a prior heat treatment. It's often the step that makes the next stage of manufacturing possible; easier machining, cleaner forming, or simply a more stable structure before final hardening. We control heating rate, soak time, and cooling rate closely, since all three shape the final grain structure.
Normalising refines and homogenises grain structure by heating above the critical temperature and cooling in still air, refining coarse or uneven grain left behind by casting, forging, or welding. It's a common preparatory step before final hardening, since a uniform starting structure gives more predictable, consistent results downstream.
Welding, machining, and casting all leave residual stress locked inside a component. Stress that can cause distortion or cracking later if it's never released. Stress relieving heats the part below the transformation temperature, holds it, then cools it slowly and evenly, letting internal stresses dissipate without changing the underlying hardness or microstructure.
Used primarily on stainless steels and superalloys, solution annealing dissolves precipitates back into the matrix at high temperature, then rapidly quenches the part to keep them in solution. This restores corrosion resistance that can otherwise be compromised by welding or prior thermal cycles, critical for components going into corrosive or high-purity service environments.
For components too large or awkwardly shaped for a furnace or induction coil, flame hardening uses a precisely controlled oxy-gas flame to harden targeted surfaces: gear teeth, guide rails, large shafts; followed immediately by a quench spray. It's a flexible, portable process well suited to heavy engineering parts and low-to-medium volume work.