Professional Metal Heat Treatment Solutions
Machining creates the shape, but Heat Treatment defines the performance. It is the controlled process of heating and cooling metals to alter their physical and mechanical properties without changing the product shape. Whether you need to increase hardness for wear resistance, improve ductility to prevent cracking, or relieve internal stresses for dimensional stability, precision heat treatment is essential for high-performance engineering components.
At JUCHENG, we integrate heat treatment into our manufacturing workflow. From Vacuum Hardening of tool steels to Case Hardening of automotive gears, we partner with certified thermal processing facilities to ensure your parts achieve the exact Rockwell (HRC) hardness and microstructure specified in your engineering prints.
At JUCHENG, we integrate heat treatment into our manufacturing workflow. From Vacuum Hardening of tool steels to Case Hardening of automotive gears, we partner with certified thermal processing facilities to ensure your parts achieve the exact Rockwell (HRC) hardness and microstructure specified in your engineering prints.
Heat Treatment
JUCHENG’s Thermal Processing Capabilities
We offer a full spectrum of thermal treatments tailored to material type and application:
- Through Hardening (Quench & Temper): Heating the entire part and quenching it to achieve uniform hardness throughout the cross-section. Ideal for high-strength bolts and structural alloy steels (4140, 4340).
- Case Hardening (Carburizing): Diffusing carbon into the surface of low-carbon steels to create a hard, wear-resistant "case" while maintaining a tough, ductile core. Perfect for gears and shafts.
- Vacuum Heat Treatment: Performed in a vacuum chamber to prevent surface oxidation and scaling. Essential for precision tool steels (D2, A2) and stainless steels (440C, 17-4PH) to maintain a bright, clean finish.
- Nitriding / Nitrocarburizing: A low-temperature process that diffuses nitrogen into the surface, creating a hard, corrosion-resistant layer with minimal distortion.
- Annealing & Stress Relief: Controlled heating and slow cooling to soften the metal, improve machinability, or remove internal residual stresses caused by machining or welding.
Categorie della galleria prodotti
Vacuum Hardened Tool Steel
Case Hardened Gears
Nitrided Shafts
Flame Hardened Components
Hardness Testing & QC
Materials Available
Materials Requiring Heat Treatment
We process a wide variety of ferrous and non-ferrous alloys:
| Material Class | Common Grades | Typical Treatments |
| Tool Steels | D2, A2, O1, H13 | Vacuum Hardening & Tempering (50-62 HRC). |
| Alloy Steels | 4140, 4340, 4130 | Quench & Temper (Q&T), Nitriding, Induction Hardening. |
| Acciaio Inossidabile | 17-4 PH, 440C, 420 | Precipitation Hardening (H900), Vacuum Hardening. |
| Carbon Steel | 1018, 1045, 1215 | Carburizing (Case Hardening), Normalizing. |
| Aluminum | 6061, 7075 | Solution Heat Treatment & Aging (T6) - usually done at the mill, but we can re-treat if needed. |
Comparison
Comparison: Through Hardening vs. Case Hardening
Which hardening method fits your design?
Which hardening method fits your design?
| Feature | Through Hardening | Case Hardening |
| Effect | Hardens the entire part (Surface + Core). | Hardens only the outer skin (0.5mm - 2mm). |
| Core Property | Hard but Brittle. | Tough and Ductile (Absorbs shock). |
| Materiali | Medium/High Carbon Steels (1045, 4140). | Low Carbon Steels (1018, 8620). |
| Wear Resistance | Good. | Excellent (Surface is harder). |
| Distortion Risk | Higher (Due to rapid quenching). | Lower. |
| Best For | Structural strength, fasteners. | Gears, shafts, wear plates. |
Perché sceglierci
- Distortion Management: Heat treatment causes metal to move. We leave precise grinding allowances on critical dimensions and use specialized fixturing to minimize warping during the quench cycle.
- Certified Reports: We provide heat treatment charts and hardness inspection reports (Rockwell C/B or Brinell) with every shipment, ensuring accountability.
- Integrated Grinding: Since hardened parts are often distorted, we offer in-house precision grinding to bring the part back to final tolerance after heat treatment.
- Clean Surfaces: Our use of vacuum furnaces means your parts return bright and clean, not covered in black scale that requires expensive sandblasting to remove.
Advantages
- Wear Resistance: Significantly extends the life of moving parts by preventing surface abrasion and galling.
- Strength: Increases the yield and tensile strength, allowing for lighter, stronger designs.
- Dimensional Stability: Stress relief prevents parts from warping over time or during subsequent machining operations.
- Impact Resistance: Proper tempering makes brittle materials tough enough to withstand shock loads.
Industries Served
- Automotive: Transmission gears, camshafts, crankshafts, suspension components.
- Aerospace: Landing gear struts (High strength steel), turbine blades.
- Tool & Die: Stamping dies, injection molds, cutting punches.
- Oil & Gas: Drill bits, valve bodies, high-pressure fittings.
- Medical: Surgical instruments (Hardened Stainless Steel).
Richiedi il tuo DFM e Preventivo – Carica i tuoi Disegni
ㆍInserisci i tuoi requisiti e carica il tuo file 2D e 3D, ti forniremo il preventivo e il DFM entro 24 ore.ㆍTipi di file: STEP, STP, IGES, IGS, SLDPRT, 3DM, SAT, X_T, DWG, DXF, STL, PDF, ZIP e altri. Dimensione file: < 128 MB Dimensione pezzo: < 1500*1500*1500 mm
ㆍPrivacy: Rispettiamo la tua privacy. Qui puoi trovare un esempio di accordo di non divulgazione. Inviando questo modulo, accetti i nostri termini e condizioni e la politica sulla privacy.
ㆍPrivacy: Rispettiamo la tua privacy. Qui puoi trovare un esempio di accordo di non divulgazione. Inviando questo modulo, accetti i nostri termini e condizioni e la politica sulla privacy.
