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As a commonly used flexible lifting tool in modern industrial lifting, polyester webbing slings are widely used in machinery manufacturing, metallurgy, electricity, aerospace, port transportation and warehousing due to their advantages of lightness, high strength and no damage to the surface of the hoisted object. However, due to the high-risk characteristics of hoisting operations, if polyester webbing slings are improperly operated and safety details are ignored during use, it is very easy to cause objects to fall, personal injury or equipment damage. Therefore, mastering the safety precautions for the use of polyester webbing slings is the key to ensuring the personal safety of operators and the smooth progress of the project.
This article will systematically sort out the safety points that should be paid attention to in the actual operation of polyester webbing slings from multiple perspectives such as selection, use, inspection and maintenance, to help users use polyester webbing slings scientifically and normatively, and improve the safety and efficiency of hoisting operations.
1. Correctly select the applicable polyester webbing sling specifications
Before carrying out hoisting operations, the first step is to select the appropriate polyester webbing sling according to the characteristics of the hoisted object, environmental conditions and operation methods. Common selection points include:
Tonnage matching
Polyester webbing slings have a clear rated load (Working Load Limit, WLL). When selecting, it is necessary to ensure that the rated load of the sling is higher than the actual weight of the object being hoisted, and leave an appropriate margin. Avoid overloading!
Lifting method
Different lifting methods (such as straight lifting, double-limb lifting, U-shaped lifting, winding lifting, etc.) have different effects on the carrying capacity of polyester webbing slings. For example, the load that the sling can bear during U-shaped lifting is usually twice that of straight lifting. Therefore, when designing a plan, the impact of the use method on the carrying capacity should be accurately evaluated.
Length selection
The length of the sling should be adapted to the actual working conditions. Too short will cause the force angle to be too large, increasing the tension of the sling; too long may cause slippage and reduce the stability of the lifting.
Structural form
The common structures of polyester webbing slings are flat slings and ring slings. Ring slings can rotate 360 degrees, suitable for multi-angle lifting, and high flexibility; while flat slings are suitable for conventional operations such as straight and double-limb lifting.
2. A comprehensive inspection must be carried out before use
Before each lifting, it is a mandatory safety process to inspect the polyester webbing sling. The inspection items should cover the following aspects:
Appearance inspection
Observe whether the sling has abnormal phenomena such as wear, tear, broken wire, burn, chemical corrosion, knot, pinhole, blackening, etc. Once these problems occur, even if the damage area is small, it may reduce the overall load-bearing capacity and must be replaced immediately.
Lifting rings and joints
If the polyester webbing sling is a modular structure, check whether the hardware accessories such as the lifting ring and connecting buckle have cracks, rust, deformation, looseness, etc.
Labels and logos
Polyester webbing slings will be attached with a load-bearing capacity label or certificate when leaving the factory to ensure that it is clear and legible. If the label is lost or blurred, it is prohibited to continue to use it because there is no way to confirm its load range.
3. Operation specifications during lifting operations
The operation process is the stage where safety accidents are most likely to occur. Be sure to follow the following operation specifications:
Avoid direct contact with sharp angles
Although polyester materials have high strength, they have poor cutting resistance. When hoisting objects with corners or sharp edges, protective measures such as corner guards or cushions should be used to wrap the contact parts to prevent the sling from being cut.
Do not use with knots
polyester webbing slings must not be knotted or entangled at will during use. Knotting will seriously reduce the actual bearing capacity of the sling and even cause the sling to break.
Balance and stability of hoisted objects
Objects should be lifted in a balanced manner to avoid deflection, spinning or tipping during hoisting. Symmetrical points should be evenly distributed to ensure uniform load transfer.
Prohibit dragging and twisting
Polyester webbing slings can only be used for vertical or oblique hoisting. It is prohibited to use them for ground dragging, forced pulling and other operations to avoid damage to the internal fiber structure.
Do not contact with high temperature
The working temperature of polyester webbing slings is generally -40℃~100℃. When used in high temperature or welding spatter environment, high temperature resistant protective covers must be installed to prevent the sling from melting or aging.
4. Maintenance and storage after use
Good maintenance habits can significantly extend the service life of polyester webbing slings, and at the same time reduce the safety hazards caused by aging of slings.
Cleaning and drying
After use, if the surface of the sling is stained with oil, sand, acid and alkali liquids, etc., it should be cleaned with warm water and neutral detergent in time, and placed in a cool and ventilated place to dry naturally, avoiding direct sunlight.
Classification and storage
The slings should be placed neatly according to specifications to avoid heavy objects being placed on them; they should not come into contact with chemicals or wet items. The storage environment should be dry, oil-free, and non-corrosive.
Regular re-inspection
Even if there is no obvious damage, the slings should be fully inspected at regular intervals (such as monthly or quarterly), especially in scenarios where they are frequently used.
5. Common illegal operations require special vigilance
In actual work, some illegal operations are easily overlooked and require special reminders:
Use heavy objects that exceed the rated load of the sling for lifting;
Continue to use the polyester webbing sling when it is obviously worn or damaged;
Hardly pull the sling and the hook without any buffer protection;
Multiple operators do not unify the command signal, resulting in asynchronous lifting actions;
Start lifting without confirming that the object is firmly fixed.
These behaviors are very likely to cause accidents and must be eliminated.
Although polyester webbing slings are a seemingly simple lifting tool, they carry the safety and efficiency of lifting operations. A small neglect may bring immeasurable consequences. Through the systematic combing of this article, we can see that from the selection, inspection, use to maintenance of slings, every link cannot be sloppy.
In lifting operations, safety is always the first principle. It is recommended that enterprises establish a strict lifting safety system, regularly train and assess operators, ensure that each polyester webbing sling is used under controllable and safe conditions, and eliminate risks from the source.
Let us pay attention to the details of each lifting operation, start with small things, build a solid safety line, and escort the quality of the project and personal safety.
As a professional sling supplier, we are well aware that each polyester webbing sling not only carries goods, but also carries customers' trust in safety and quality. Based on years of industry experience, we strictly follow international standards, select high-strength polyester raw materials, carefully manufacture each sling, and provide professional selection guidance and usage training to ensure that customers can work safely in various complex lifting scenarios. Combined with the precautions mentioned in this article, we also call on users to always put safety first, choose reliable products and standardized operations, and jointly create an efficient and stable lifting environment.
http://www.reliablesling.com
Zhangjiagang Reliable Co.,Ltd
