Using manganese as a catalyst, we forge a legendary toughness with exceptional cost-effectiveness.

Material Matrix: A game-changer in the carburizing steel industry

A Four-Dimensional Performance Revolution

Breakthrough in Carburizing Speed and Precision

Chromium-Manganese Synergistic Effect Achieved: Carburized Case Depth Deviation ≤ ±0.05mm (Industry Standard ±0.15mm)

→ 20CrMnTi gear carburizing cycle shortened by 40%** (930°C x 6h, achieving a 1.2mm case depth)

◉ 20CrMn core impact energy reaches 100J (-20°C)

◉ 30CrMnSi notch sensitivity <1.8 (far lower than SAE 4340's 2.4)

Fatigue Great Wall Casting

Reconstructing Economic Rules

The cost per ton of steel is ￥2,400-￥5,500 lower than nickel-containing steels. Material utilization is increased by 15%** at equivalent strength (greater potential for weight reduction designs).

Smart Manufacturing Chain: The Transformation from Steel Ingots to Precision Gear

Meixinchang's Exclusive Process:

VOD refinement → Controlled Rolling and Cooling (TMCP) → Multi-station die forging → Dual-frequency induction hardening → Low temperature ion sulfurization

Typical terminal products:

🚗 New energy reducer gear (20CrMnTi): tooth surface contact strength **＞2000MPa**

🏗️ Tower crane slewing ring gear (40CrMnMo): crushing strength **≥4500MPa**

✈️ Landing gear actuator link (30CrMnSi): Fatigue life **＞5×10⁶ times** (far exceeding FAA standards)

Quality Control: Exceeds the stringent standards of DIN.

Key Specifications: DIN EN 10084, controlled internally by Meixinchang.

Grain Size: ≥ Grade 6 **≥ Grade 9**

Banded Structure: ≤ Grade 2 ≤ Grade 1

Carburized Layer Concentration Gradient: ΔC ≤ 0.15%/0.1mm ΔC ≤ 0.08%/0.1mm

Hardenability Bandwidth: ≤ 5HRC ≤ 2HRC

► Each batch provides: carburizing metallographic map + contact fatigue test sample + residual stress scanning report

Choose the five irreplaceable factors of Meixinchang

✅ Carburizing Think Tank: Accumulated 300+ gear carburizing process database, free parameter optimization

✅ Economic revolution: 20CrMnTi replaces 20CrNiMo, reducing costs by 35% without sacrificing performance

✅ Digital prediction system: upload gear model and output fatigue life cloud map within 72 hours

✅ Extreme delivery capacity: Supports single-piece 200kg precision forged gears, DIN 3962 precision level 4

✅ Failure Shield: Provides material-heat treatment-structure 3D FEA joint simulation