Round steel link chain making for 30+ years
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SHANGHAI CHIGONG INDUSTRIAL CO., LTD

(round steel link chain manufacturer)

A General Review of Longwall Coal Mine Conveying Chain Fatigue Life

Round link chains for longwall coal mines are typically used in Armoured Face Conveyors (AFC) and Beam Stage Loaders (BSL). They are made of high alloy steel and to withstand the very harsh conditions of mining/conveying operations

The fatigue life of conveying chains (round link chains and flat link chains) in coal mines is a critical factor to ensure the reliability and efficiency of mining operations. Here's a brief overview of the design and testing process:

longwall coal mine

Design

1. Material Selection: mining chains are typically made from high alloy steel to withstand harsh mining conditions.

2. Geometry and Dimensions: The specific dimensions, such as 30x108mm round link chains, are chosen based on the requirements of the conveyor system.

3. Load Calculations: Engineers calculate the expected loads and stresses the chain will bear during service.

4. Safety Factors: Design includes safety factors to account for unexpected loads and conditions.

Testing options

1. Simulation Tests: Due to the difficulty of replicating underground conditions, simulation tests are often used. These tests use models to simulate the working conditions and measure the chain's performance.

2. Real-World Testing: When possible, real-world tests are carried out to verify the simulation results. This involves running the chain under controlled conditions to measure its performance.

3. Finite Element Analysis (FEA): This method uses computer simulations to predict how the chain will perform under various loads and conditions.

4. Fatigue Life Estimation: The chain's fatigue life can be estimated using the results from above simulation and real-world tests. This includes analyzing the stress and strain on the chain over time.

Factors Affecting Mining Chinas Fatigue Life

1. Conveying Inclination Angle: Changes in the conveying inclination angle can significantly impact the chain's fatigue life.

2. Strike Inclination Angle: Similar to the conveying inclination angle, the strike inclination angle can also affect the chain's performance.

3. Load Variations: Variations in load during operation can lead to different fatigue life outcomes.

Post time: Dec-25-2024

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