If you own lifting equipment, a chain sling is one of its essential parts. However, with time, they go through wear and tear. During those times, you have to consider buying a new one. Before buying, there are certain things that you have to perceive.

You should fathom which kind of sling you need- A mechanical (forged) chain sling or a welded chain sling. Before making your choice, you should go through their purposes and other things. It will give you a clearer idea about your requirement.

Here, we will conduct a comparative study between these two types of chain slings. We assure you that you can make your decision precisely once you go through our study. Here is everything that you need to know.

Welded Chain Slings

What is a welded chain sling?

In a welded chain sling, both sides of the chains come with welded attachments. After getting attached, the manufacturers provide heat treatment to them. If you look at the chain sling assembly, you will find out that they have permanent attachment.

Benefits of welded chain slings

Mechanical chain slings have numerous benefits to offer. The reasons for buying this chain sling are:

You don’t have to worry about any wearing of mechanical components.
These slings are durable as well as long-lasting. Once you purchase them, they will provide you with long-term service. It will be a good investment.
Modifications are challenging in this type of chain slings. An employee cannot modify it whenever he or she wants. It will save you from various accidents.
They are reliable. Manufacturing companies try and test them before sending them to the market. They test both components and slings.

What are the disadvantages of welded chain slings?

Apart from the advantages, you may have to experience some disadvantages as well. There are some issues that you may have to follow while manufacturing and using mechanical chain slings, such as:

You will need a large amount of equipment to make it. Plus, you will need experienced and trained welders. So, it may cost you a significant amount of money.
If some damage happens to this sling, it will take a lot of time to repair. The reason is the lengthy heat process.

Inspection

If a welded sling gets broken or damaged, you should get in touch with a certified manufacturer. They are the best people to help you in this section.

Mechanical (Forged) Chain Slings

What is the definition of mechanical chain sling?

Mechanical chain slings come with pins. A welded chain is connected to a welded chain. The pins are responsible for keeping the slings in place. You can also remove the mechanical components easily. The best part is it is compatible with other hooks as well as other devices. It can be a game-changer during emergencies.

What are the advantages of mechanical chain slings?

Mechanical chain slings come with multiple perks. Here, we will try to take a look at those benefits so that you can make the right choice.

Pros

It is less expensive compared to welded chain slings. You don’t have to worry about any pressure in your pocket.
If you are qualified personnel, you can modify the mechanical components. According to your necessity, you can customize it.
If you witness any faults, you can repair them quickly. You don’t have to spend much time repairing it.
It is a durable machine. You can use them for a long time too. However, you have to make sure that you are using it in the right way.

Cons

Compared to welded chain slings, it may wear and tear faster.
People can make adjustments on sites, and that is both a pro and con. If you take the liability of adjustment and some unwanted situations occur, you will be in a bad light. Besides, when an unskilled worker tries to adjust the mechanical component.
They are not proof tested. Your company has to invest in proof testing.

Inspection

If you find any damage in your mechanical chain sling, you don't have to change the entire sling, but you can just remove and change the damaged part.

Durability

Now, durability is something that is the same in the case of both the chain slings. They comprise the same working load limit if they have equal configurations and specifications. Plus, their performance will be identical during extreme temperatures.

Cost Difference

Both mechanical and welded sling assemblies have nothing to do with cost. If you purchase slings with equal capacity and configuration, the price will be somewhat the same. Some factors may influence the price, such as:

Diameter of the chain
Length of the chain.
Grade of the chain.
The capacity of the chains.
Specialized fittings such as links, hooks, rings, and other things.

Now, we will suggest you go through this article meticulously. It will clear your several doubts. We observed numerous things while analyzing these chain slings. For example, we perceived the advantages and disadvantages of both the slings. Besides, they both need inspection and repair if any damage happens to them. You will get an idea about their cost too.

So, gather these pieces of knowledge. They will help make the right choice. Try to understand your company’s specific needs and buy the right one.

How a Chain Sling Is Made

Types of chain slings

Multi-leg: Companies use the multi-leg which requires lifting extra loads. Especially loads that exceed 82 tonnes and more direct the use of a multi-leg chain sling. You must properly configure it for the correct and safe function. The multi-leg chain slings, however, contain three or more three chains. But these chains come in the same grade options as that of double and single-leg slings.

Double leg: The double-leg chain sling comes with two separate links of the chain. With the double-leg chain sling, you have the option of a master sling with either a grab hook, foundry hook, or sling hook. Some of the double-leg chain slings come with different adjustable and dual endless baskets. The weight capacities of the double-leg chain sling can exceed more than 45 tonnes; also, these chain slings come in 80 grades or 100 grades.

Single leg: The single-leg chain sling has a single chain that supports the lifting of loads. This type of changeling requires the application of load distribution.

Configuring chain slings

Once we know what the different kinds of chain slings are, we should learn about the configuration to use them. The various components of chain sling include:

The length of the chain leg
The size of the chain
Chain type
Number of chain legs
The bottom and the hook fittings

Requirements

To make chain slings, one must require the following standards to consider.

A steel chain sling must have durable identification that is permanently affixed. It can, however, state the grid-rated capacity size and reach of the chain. You must inspect the sling daily before using it to ensure that it does not have any signs of stress and wear. Moreover, a thorough inspection of link by link is necessary. Once you come up with the result of your assessment, document it for the next 12 months.

You should stop using make-shift links or any kind of fastener that the company manufactures from rods or bolts. Before using it, it must be thoroughly proof tested by the concerned manufacturer. Proof testing is a non-destructive tension test that verifies artistry and construction.

Assembling a chain sling

A chain sling requires all the lifting components to come together. Once you accumulate these components, you can cut the chain according to your preferred length. The parts that you have collected are then joined together with a clevis fitting or a coupler.

These settings are checked before use to ensure safety and accuracy. At the bottom of the changeling, you need to keep a hook for picking uploads. These hooks come with a safety latch locking mechanism.

Factors to keep in mind while making chain slings

Angle tension: In the case of multi-leg chain slings, the angle between the different legs is critical. The actual tension that falls on each leg increases when you increase the angle between the legs. For this very reason, all the chain slings used for different functions come with a 90-degree inclined angle. You must not exceed the tension above 120 degrees.

Chain sling headroom: The distance between the load and the crane hook can be called the headroom of the changeling. If the load requires a particular headroom, then one must increase the angle between the legs of the changeling. With every increase in the length, the angle of reach increases.

Lifting reach: The lifting reach is also known as the chain length or bearing to bearing. The rich is the distance between the lower terminal fitting of the bearing point and the upper terminal fitting. At the same time, you make the chain sling and make sure that you provide the measurement of the proper distance. If you can shorten the clutches, then you can make your chin sling adjustable. This word increases the versatility of the sling without any doubt.

Type of hooks: It is one of the essential parts to consider while making the chain sling. You can have the clevis shackle or self-locking hooks. You can also have the 'C' hook or the sling hook to lift the load according to its weight.

Safety checks before handling chain slings

If your chain slings get damaged or contaminated, never put them in the storage box. You should clean it and dry it to protect it from any corrosion. The place where you should store the changeling should be clean, dry, and free of contaminants. The contaminants would do more harm to the sling. You must always refer to someone who understands the subject properly if you are looking for altering, modify, or repair the chain. Here is an easy guide to follow while you make a chain sling.

Inspecting Alloy Chain Slings

Who performs the Chain Sling Inspection?

A designated person performs all the inspections. They are the qualified person who identifies different damages and provides the steps that one needs to take in case of those damages.

Inspection before initial use: Once you receive it from the manufacturer, you should always inspect and double-check to avoid any damage.

Inspection before daily use: A competent person should be designated to perform the daily inspection.

Periodic inspection: The periodic inspection of the chain sling should be performed by any qualified person or a professional inspector. As per the Indian Factory Safety Act, one needs to inspect the chain sling regularly every 12 months. There are some determining factors to consider while you schedule the periodic inspection frequency. These factors include

The severity of the service condition
Frequency of use
Nature of the lift that is being performed
Experience gained over the alloy chain slings' service life.

According to safety norms, there are some periodic inspection guidelines. These are:

One should do normal service yearly
Severe service needs to be done on a monthly to quarterly basis
Special service requires a recommendation from the qualified person

The authorised person should decide the inspection period of the sling chain based on the frequency of use and the severity of the operating environment. It is a prevalent issue that most of the business faces related to maintaining the inspection records.

Requirement needed on the identification tag of the chain sling

Whenever you are using the chain for overhead lifting, you need to ensure that the gradation of the chain should always be composed of alloy Steel and not carbon Steel. It is mandatory that the sling should have an identification tag. If whatever you are changing does not meet these requirements, the user should refrain from using it for overhead lifting.

Alloy chains have more strength than that carbon chains. As per the safety standards, the sling chain should include

Name of the manufacturer or trademark
The nominal chain size
The gradation of the chain
The number of legs
Type of hitches that needs to be used
The individual identification serial number of the sling
The length of the sling

If, in any case, the tags are illegible or missing, then the inspector should immediately remove them from the service. Furthermore, one should send it to the authorized repair facility for updated or current tagging, testing and certification.