Aangepaste hijsketting

Er zijn verschillende soorten hijskettingen beschikbaar, ontworpen om te voldoen aan specifieke belastingsvereisten en hijstoepassingen. Grade 80 kettingen worden vaak gebruikt voor algemene hijsdoeleinden en bieden een goede balans tussen sterkte en betaalbaarheid. Grade 100 kettingen bieden een hogere sterkte en draagvermogen, waardoor ze geschikt zijn voor zware hijstaken. Daarnaast zijn er roestvrijstalen kettingen beschikbaar voor toepassingen die corrosiebestendigheid vereisen. De keuze van de hijsketting is afhankelijk van factoren zoals het gewicht van de lading, de arbeidsomstandigheden en de veiligheidsvoorschriften.

The safety measure was identifying which types of chain are appropriate and strong enough for overhead lifting. Anytime we move or lift a load it is dangerous. Moving a load along the ground has the advantage that the ground is supporting the load. We have to overcome the coefficient of friction to move the load. The chain’s working load limit does not have to match the weight of the load. It needs to be able to handle the tension applied, which is based on the surface that it is being moved over plus some fraction of the weight of the load. This can be calculated using formulas.

If we lift that same load off the ground, we now have to overcome gravity. The chain’s working load limit will have to be of sufficient strength to support the weight of the load plus any additional forces imposed by angles and hitch type(s) used.

Hijskettingen find application in a wide range of industries and sectors that involve material handling and lifting operations. They are commonly used in construction sites for lifting heavy equipment, building materials, and structural components. Hijskettingen are valuable in manufacturing facilities for hoisting machinery, engines, or heavy parts. They are also employed in the transportation and logistics industry for cargo handling and securing loads on trucks, cranes, or ships. Additionally, lifting chains are used in the mining, oil and gas, and marine sectors for various lifting and rigging tasks.

Alloy Chain Grade 80 or Grade 100 should be used for overhead lifting. ASTM states that alloy chain shall be able to elongate a minimum of 20% before fracture (7.3.5). To ensure that alloy chain consistently meets this requirement, ASTM requires the use of certain alloying elements in the manufacturing of the steel for alloy steel chain. These alloys can vary from company to company, but some key requirements are specified by ASTM. The alloy properties also improve the wear and tear that the chain will experience.  Note that when chain is in use, no amount of stretch is allowed.