Ningbo Fenghua Bolong Machinery Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of induction hardening in China. Please feel free to buy durable induction hardening made in China here from our factory. All customized products are with high quality and competitive price.
Process Specifications
|
Parameter |
Specification |
|
Heating Method |
Induction coil - high-frequency or medium-frequency (heating time measured in seconds) |
|
Quench Media |
Water or polymer spray |
|
Surface Hardness |
50–65 HRC (material-dependent) |
|
Case Depth Range |
1.0–5.0mm |
|
Hardening Pattern |
Selective/localized - or full pass-through |
|
Applicable Materials |
45#, 20# carbon steel; 40Cr, 35CrMo, 20CrMnTi alloy steel; 6061/6063 aluminum; 304 stainless steel; brass |
|
Certifications |
IATF 16949, ISO 14001, ISO 45001, IECQ QC080000 |
Performance Highlights
Selective hardening - only the zones that need it
Induction hardening acts on specific areas - gear teeth, bearing journals, cam lobes - while untreated zones retain their original microstructure and properties.
01
Fast heating, minimal distortion
Heating time measured in seconds. Distortion is significantly lower than in carburizing, making induction hardening suitable for parts already machined to near-final dimensions.
02
No carburizing required - direct hardening of medium/high carbon steels
Induction hardening does not change composition. Medium/high carbon steels (45#, 40Cr) with sufficient carbon content are hardened directly, eliminating the carburizing step.
03
Controlled case depth
Case depth is controlled by adjusting frequency and heating parameters - from shallow surface hardening to deep penetration hardening.
04
Automotive critical parts
Camshafts, crankshafts, CV joints, gears, and bolts all benefit from localized induction hardening.
05
Applications
Camshafts and Crankshafts
Cam lobes and bearing journals require high wear resistance, while other areas need toughness. Induction hardening delivers selective localized hardening.
Gear Teeth
Gear teeth are subjected to high contact stress during meshing. Induction hardening of tooth flanks improves wear resistance and fatigue strength.
Drive Shafts and CV Joints
Shaft journals and CV joint raceways require localized hardening. Fast heating minimizes distortion.
Why Induction Hardening
Carburizing – hardens the entire part; cannot be localized to specific areas
Through hardening – hardens the entire part; cannot avoid areas that must remain tough
Induction hardening – acts only on selected zones. Minimal distortion. High efficiency.
For camshafts, gears, drive shafts - where localized wear resistance is required and other areas must remain tough - induction hardening is the production method.
Contact Us for Your New Project
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