Introduction to Scraper Chain Link Pins:

Scraper chain link pins are critical components in the assembly of scraper chains, which are used in various material handling applications, particularly in drag chain conveyors and scraper reclaimer conveyors. Here is a brief introduction:

1. Functionality: Scraper chain link pins serve as the connecting elements between the inner and outer chain links. They ensure the integrity and continuity of the chain, allowing it to function smoothly around the sprockets and through the conveyor system. These pins are designed to handle the stress and wear from the continuous movement of abrasive materials.

2. Design and Construction: Scraper chain link pins are typically made from highly ductile materials that are resistant to wear and tear. They are often drop-forged to attain a compact grain construction, which enhances their strength and durability. The inner portion of the pin is precisely machined to minimize friction and wear, ensuring the smooth operation of the chain.

3. Heat Treatment: To further enhance their wear resistance, scraper chain link pins are often heat-treated. This process can involve case hardening to achieve a surface hardness of more than 550 HV, which is particularly useful in abrasive applications. The case depth can range from 0.7 mm to 1.0 mm, providing a robust surface that can withstand the harsh conditions of material transport.

4. Material and Strength: These pins are manufactured from age-resistant, fine-grained, heat-treatable alloy steel and stainless steel. They are designed to have a high breaking strength, which can reach up to 600 N/SQ mm, making them suitable for heavy-duty applications.

5. Maintenance: Proper maintenance of scraper chain link pins is essential to prevent chain failure. This includes regular inspections for wear, ensuring proper lubrication to reduce friction, and replacing pins that show signs of excessive wear or damage.

6. Applications: Scraper chain link pins are used in a variety of industries where the transportation of abrasive materials is required. They are commonly found in heavy-duty drag chain conveyors, wet scrapers, boiler feeders, mill hoppers, ash handling conveyors, ESP dust conveyors, en-masse conveyors, reclaimer, and intermediate carriers.

In summary, scraper chain link pins are essential for the reliable operation of scraper chains in material handling systems. Their design, material selection, and heat treatment processes are tailored to provide strength, durability, and resistance to the abrasive conditions they encounter in various industrial applications.