CHAIN LIFTING TIE RODS
TECHNICAL SPECIFICATIONS – CHAIN SLINGS
Lifting chains are a type of device used to lift heavy loads in industrial and commercial applications. Also known as slings, they are available in different lengths and load capacities to suit specific requirements. They are often used with cranes, winches, and other lifting devices to ensure safety and efficiency during lifting operations.
Lifting chains are generally made of alloy steel, which is known for its strength and durability. Alloy steel is mainly composed of iron and carbon, with the addition of other elements such as nickel, chromium, and molybdenum to enhance its mechanical properties.
Chain slings for lifting must be able to withstand heavy loads and resist wear and fatigue during use. Therefore, alloy steel is the ideal material for their construction, as it offers the necessary combination of strength, hardness, and ductility required for lifting applications.
In addition, lifting chains may undergo quenching and hardening processes to further improve their mechanical properties and wear resistance. These heat treatment processes help ensure that the chains maintain their structural integrity even under heavy loads and demanding working conditions.
Finally, lifting slings may be coated with protective materials such as galvanization to prevent corrosion and extend their service life. These coatings can be essential to ensure the safety and reliability of lifting chains, especially in environments with high humidity or exposure to corrosive substances.
Accessories for chain slings are additional components used to connect, lift, or secure loads with chains. Some of the most common accessories for chain slings include:
Hooks:Hooks are fundamental components for chain slings and are used t o attach and lift loads. They may be equipped with safety devices to prevent accidental disengagement.
Connecting links: Connecting links are used to join the ends of chains to form closed loops or to connect chains to hooks or lifting eyes.
Clamps: Clamps are used to tighten chains together or to secure them to an anchoring point. They can be used to create additional lifting points or to secure loads in position.
Eye hooks: Eye hooks are used to connect chains to lifting points or lifting equipment. They can be used in combination with grab hooks to create versatile lifting points.
Extension chains: Extension chains are additional chains used to extend the length of the main chains or to adapt them to different lifting configurations.
It is important to select the appropriate accessories based on the specific lifting requirements and to ensure that they comply with safety standards and the load capacities of the chains. In addition, accessories must be used correctly and in accordance with the manufacturer’s instructions to ensure safety during lifting operations.
CHAIN TIE ROD CAPACITY GRADE 80
LIFTING METHODS WITH CHAIN TIE RODS
Use and Maintenance of Chain Tie Rods
Lifting slings are undoubtedly the most popular for many reasons. This versatile type of sling is used in various industries, such as construction, industrial, maritime, and transportation.
Lifting Tie Rods
Chain slings for lifting are extremely versatile and incredibly durable, commonly used to lift heavy or bulky objects on construction sites, such as containers, concrete slabs, pipes, dense materials, prefabricated structures, and much more. Made from high-strength lengths of chain with a variety of attached accessories, the chains and their mechanisms are classified as Grade 80 (T), Grade 100 (V), or Grade 120.
Load Dimensions
When selecting a lifting chain, it is crucial to evaluate the load it will be lifting. Most lifting chains are durable and designed to lift loads of various types of materials, making them suitable for use in most situations. It is crucial to evaluate each load individually to determine whether the chain can withstand the load, so as not to risk compromising the safe lifting of materials or a structure, as well as the safety of the operator and the surrounding environment.
Durability at Different Temperatures and Conditions
Chain slings are renowned for their strength and performance in extreme temperatures and heavy-duty applications. They can withstand temperatures up to approximately 500 degrees Celsius, making them the ideal choice for metal fabrication, steel plants, heavy machinery manufacturing and transportation, and various other environments that face extreme temperatures.
A lifting chain will not melt, break, or weaken under these conditions, providing comfort to buyers and operators. Lifting chains are abrasion-resistant, an essential factor as they are less likely to cause heat-induced damage.
CHAIN TIE ROD CAPACITY GRADE 100
EXAMPLE OF A FOUR-ARM CHAIN TIE ROD
Sling Chain Ratings
Most chain slings currently on the market have industrial ratings listed on their labels, detailing their specific conditions of use. These specified conditions may include maximum environmental or temperature exposure conditions, operating requirements, and assembly instructions for attaching the sling to the load. Ensure these guidelines are followed as prescribed to avoid any risk of damage to the sling, its load, and to avoid compromising the safety of the operator and the surrounding environment.
Lifting points
It's essential to analyze and calculate the correct load attachment points; otherwise, you'll need to evaluate and determine other attachment points sufficient for proper lifting. Where lifting points don't exist, it's wise to select a chain sling that can pass through an opening in the load. You can also opt for a chain sling that can wrap securely around the load.
Quarterly inspection of the tie rod
A quarterly inspection of the chain link is mandatory. This inspection must ensure that all aspects meet standard safety guidelines. Therefore, the chain link must be cleaned before each inspection. This inspection must confirm that it is properly labeled and certified, and that each chain link examined shows no signs of wear, twisting, stretching, scratches or marks, heat damage, chemical burns, or extreme corrosion.
Note: Any natural wear of the tie rod can be tolerated as long as the width of any section is not reduced by 10% of the nominal section.