Tooth Adapter 3031537 4046819 Aftermarket Parts

How to select edge tooth materials according to engineering requirements

The selection of edge tooth materials must closely match the core elements of engineering requirements, including working conditions and loads, environmental conditions, performance indicators and economic benefits. The core principle is "high hardness and wear resistance of the tooth surface, high toughness and impact resistance of the tooth core" ‌. The following is a structured material selection guide:

I. Match the type of material based on the requirements of the working conditions

Light-load environment (such as earthwork, sand and gravel operations) ‌ :

Give priority to cost-effective medium carbon quenched and tempered steel (such as 45#), which has moderate core toughness, is easy to process and heat treat, and is suitable for smooth load scenarios ‌.

Avoid over-reinforcing materials, otherwise it will increase costs and reduce operational efficiency ‌.

Heavy load impact environment (such as ore, rock blasting operations) ‌ :

Carburized steel (such as 20CrMnTi) must be used. The surface hardness reaches 56-62 HRC through carburizing and quenching, and the wear resistance life is increased by more than three times, effectively resisting pitting corrosion and plastic deformation ‌.

Special conditions (high temperature, corrosion or precision transmission) ‌ :

Nitrided steel (such as 38CrMoAlA) is recommended. After nitriding treatment, its surface hardness exceeds 850 HV, it has strong thermal stability and low dimensional deformation rate, and is suitable for high-temperature equipment or Marine engineering ‌.

⚙️ II. Core performance indicators and processing technology

Tooth surface hardness requirement ‌ :

The surface needs to undergo strengthening treatments such as carburizing, nitriding or induction hardening to enhance its wear resistance and pitting resistance (for example, the hardness of the carburized layer exceeds 1079 MPa) ‌.

Optimizing the tooth profile design can further reduce material loss ‌.

Core toughness requirement ‌ :

The tensile strength of the core material should be ≥640 MPa to ensure the absorption of dynamic impact loads and prevent fatigue fracture ‌.

Economy and process balance ‌ :

Short-term high-cost materials (such as nitrided steel) can recover investment by extending their lifespan by 2-3 times ‌.

Refer to the material performance comparison chart to comprehensively evaluate the cost and wear resistance ‌.

III. Systematize the material selection process

Step-by-step decision-making ‌ :

① Quantify the working condition parameters (load intensity, ambient temperature, impact frequency) →

② Set performance priorities (for wear resistance, choose high-hardness steel; for impact resistance, choose quenched and tempered steel) →

③ Verify the matching degree between the laboratory data and the actual working conditions, and correct the size effect ‌.

Avoid common misconceptions ‌ :

Do not use heavy-duty materials (such as rock teeth for earthwork) in light-load environments to avoid increasing ineffective costs ‌.

In precision transmission scenarios, the deformation rate of heat treatment (such as the deformation rate of nitrided steel) must be strictly controlled