shock loading wire rope made in china

Steel wire rope for oil exploration is suitable for hoisting, derricking, lifting and towing of various equipment, port load and unload and oil well drilling. The rope with wire core can be used under the shock load, headed and squeezed conditions.

The strands of steel wire rope for lifting are surface contacted structure, which made it very tight, strong wear resistance and high fatigue resistance. This compacted wire rope 6×K36WS+FC has good quality in crush-resistance. It is not easy to deformation.

A: We are wire rope & steel cable factory and manufacturer.Our main products are galvanized steel wire rope,plastic coated steel cable and iron steel strand,etc.

A: We are factory,so sufficient stock,diversified and professional export package and content methods let our wire ropes have shorter delivery time,more excellent service for pre-sale & on-sale,and make “LKS” wire ropes more suitable for long time transportation.

Generally it is 1-3 days if our wire ropes are in stock. Or it is 15-20 days if wire ropes you want to purchase are not in stock.It is according to your order quantity.

A: Yes. We are a professional manufacturer of steel cable & wire rope with 40+ years producing experience in China .We have always been cooperating with domestic and overseas customers and partners with the first- class quality and service to make great achievements. If this is your first time to contact us, please trust us, we’ll not let you down.

Wire rope is made of plaiting strands of wire – normally medium carbon steel –into a thick cable. The strands are formed around a core. The strands in wire ropes are made of wore twisted together. Strands with smaller diameter wires are less abrasion resistant and more fatigue resistant. Strands made with thicker length of wore are more abrasion resistant and less fatigue resistant.

Left-hand ordinary lay (LHOL) wire rope (close-up). Right-hand lay strands are laid into a left-hand lay rope. Right-hand Lang"s lay (RHLL) wire rope (close-up). Right-hand lay strands are laid into a right-hand lay rope.

Left hand lay or right hand lay describe the manner in which the strands are laid to form the rope. To determine the lay of strands in the rope, a viewer looks at the rope as it points away from them. If the strands appear to turn in a clockwise direction, or like a right-hand thread, as the strands progress away from the viewer, the rope has a right hand lay. The picture of steel wire rope on this page shows a rope with right hand lay. If the strands appear to turn in an anti-clockwise direction, or like a left-hand thread, as the strands progress away from the viewer, the rope has a left hand lay.

Ordinary and Lang"s lay describe the manner in which the wires are laid to form a strand of the wire rope. To determine which has been used first identify if left or right hand lay has been used to make the rope. Then identify if a right or left hand lay has been used to twist the wires in each strand. Ordinary lay The lay of wires in each strand is in the opposite direction to the lay of the strands that form the wire.

Alternate lay The lay of wires in the strands alternate around the rope between being in the opposite and same direction to the lay of the strands that form the wire rope.

The specification of a wire rope type – including the number of wires per strand, the number of strands, and the lay of the rope – is documented using a commonly accepted coding system, consisting of a number of abbreviations.

This is easily demonstrated with a simple example. The rope shown in the figure "Wire rope construction" is designated thus: 6x19 FC RH OL FSWR 6 Number of strands that make up the rope

Each of the sections of the wire rope designation described above is variable. There are therefore a large number of combinations of wire rope that can be specified in this manner. The following abbreviations are commonly used to specify a wire rope. Abbr. Description

The end of a wire rope tends to fray readily, and cannot be easily connected to plant and equipment. A number of different mechanisms exist to secure the ends of wire ropes to make them more useful. The most common and useful type of end fitting for a wire rope is when the end is turned back to form a loop. The loose end is then fixed by any number of methods back to the wire rope.

When the wire rope is terminated with a loop, there is a risk that the wire rope can bend too tightly, especially when the loop is connected to a device that spreads the load over a relatively small area. A thimble can be installed inside the loop to preserve the natural shape of the loop, and protect the cable from pinching and abrasion on the inside of the loop. The use of thimbles in loops is industry best practice. The thimble prevents the load from coming into direct contact with the wires.

A wire rope clamp, also called a clip, is used to fix the loose end of the loop back to the wire rope. It usually consists of a u-shaped bolt, a forged saddle and two nuts. The two layers of wire rope are placed in the u-bolt. The saddle is then fitted over the ropes on to the bolt (the saddle includes two holes to fit to the u-bolt). The nuts secure the arrangement in place. Three or more clamps are usually used to terminate a wire rope.

Swaging is a method of wire rope termination that refers to the installation technique. The purpose of swaging wire rope fittings is to connect two wire rope ends together, or to otherwise terminate one end of wire rope to something else. A mechanical or hydraulic swager is used to compress and deform the fitting, creating a permanent connection. There are many types of swaged fittings. Threaded Studs, Ferrules, Sockets, and Sleeves a few examples.

A socket termination is useful when the fitting needs to be replaced frequently. For example, if the end of a wire rope is in a high-wear region, the rope may be periodically trimmed, requiring the termination hardware to be removed and reapplied. An example of this is on the ends of the drag ropes on a dragline. The end loop of the wire rope enters a tapered opening in the socket, wrapped around a separate component called the wedge. The arrangement is knocked in place, and load gradually eased onto the rope. As the load increases on the wire rope, the wedge become more secure, gripping the rope tighter.

Before we address shock loading let us take the time to understand the difference between static and dynamic forces. Static force is stationary. Static force usually refers to an object not in motion. Whereas dynamic force refers to an object that has unequal forces acting upon it. Rapid acceleration in lifting and rapid deceleration in lowering of a small or large load can result in what is often referred to as dynamic load.

Remember Newton"s second law? F = ma Force equals mass times acceleration. Acceleration refers to a change in the rate of velocity. Assuming we are referring to the same mass (size of the object), we see that the force exerted on an object is proportional to the acceleration it is given. This is the basis of the phenomena known as shock loading.

Generally speaking shock force or shock loading occurs when an operator takes up sling slack rapidly or suddenly releases the load creating a sudden jerk. Both rapid acceleration and deceleration of a load can create a shock force that far exceeds the working load limit of the wire rope. Always remember that the sudden release of a load can cause internal and external damage to a wire rope. Why is the safe working load limit of rigging slings and crane lines significantly lower than their minimum breaking strength? A safety factor must always exist. Remember that minimum breaking strengths are stated for static, straight lifts or pulls.

The four pictures in this post clearly illustrate what shock force or shock loading will do to a wire rope. Note the one strand has become unraveled from the other strands in forming the wire rope. Look closer and you will note broken wires at different points of the strand. Remember a series of individual wires make up each strand on a wire rope.

Product Information:FEATURES:1) The wire rope can transmit long-distance load. 2) The bearing safety factor is large, and the use is safe and reliable. 3) Light weight, easy to carry and transport. 4) Able to withstand various loads and variable loads.5) It has high tensile strength, fatigue strength and impact toughness. 6) Under high-speed working conditions, it is abrasion-resistant, shock-resistant and stable in operation. 7) Good corrosion resistance, able to work normally in the harsh environment of various harmful media. 8) Good softness, suitable for traction, pulling, strapping and other purposes.

Application:Various equipment for derricking.lifting and drawing:The rope with core can be used under the shock load,heated and squeezed conditions such as electric shares.

2. How about price?We are a factory and be able to give you lowest price. Please trust the quotation we would give you, it is professional one.3. Why should you chose us?Chose happens because of quality, then price, We can give you both. Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, excellent customer solution proposals.4. How to ensure the interests of buyers?Our company supports Alibaba online trading, which not only ensures the safety of the buyer"s funds, but also guarantees the quality of the goods. From the outbound, to the loading, and finally to the receiving, the whole process is transparent.5. How to guarantee delivery time?We are a factory with a large inventory of stock, which guarantees that the goods will be shipped within the fastest day from the date of signing the contract.6. How to get samples?We can provide samples for buyer"s testing free of charge, but buyers need to pay for shipping costs.

TEUFELBERGER high performance steel wire ropes are being used for various tasks on cranes around the world. In order to keep their quality at the highest level, a team of experts has been working continuously on upgrading existing and developing new products. In these endeavors, we work together closely with our renowned customers so as to find the perfect solution for their high demands.

Our range of services encompasses rope assembly, splicing, exchanging ropes, and even providing customized training. For these purposes, our service teams are deployed to many countries of the globe.

soLITE® by TEUFELBERGER, the first-ever fiber rope featuring a steel wire rope construction, impresses its users by providing 10% more in loading capacity and 80% less in weight than its steel counterparts. Developed together with the crane specialists at LIEBHERR, it has already taken the place of steel wire ropes in challenging lifting applications.

Original equipment wire rope and replacement wire rope must be selected and installed in accordance with the requirements of this section. Selection of replacement wire rope must be in accordance with the recommendations of the wire rope manufacturer, the equipment manufacturer, or a qualified person.

Wire rope design criteria: Wire rope (other than rotation resistant rope) must comply with either Option (1) or Option (2) of this section, as follows:

Option (1). Wire rope must comply with section 5-1.7.1 of ASME B30.5-2004 (incorporated by reference, see § 1926.6) except that section"s paragraph (c) must not apply.

Option (2). Wire rope must be designed to have, in relation to the equipment"s rated capacity, a sufficient minimum breaking force and design factor so that compliance with the applicable inspection provisions in § 1926.1413 will be an effective means of preventing sudden rope failure.

Type I rotation resistant wire rope ("Type I"). Type I rotation resistant rope is stranded rope constructed to have little or no tendency to rotate or, if guided, transmits little or no torque. It has at least 15 outer strands and comprises an assembly of at least three layers of strands laid helically over a center in two operations. The direction of lay of the outer strands is opposite to that of the underlying layer.

Type II rotation resistant wire rope ("Type II"). Type II rotation resistant rope is stranded rope constructed to have significant resistance to rotation. It has at least 10 outer strands and comprises an assembly of two or more layers of strands laid helically over a center in two or three operations. The direction of lay of the outer strands is opposite to that of the underlying layer.

Type III rotation resistant wire rope ("Type III"). Type III rotation resistant rope is stranded rope constructed to have limited resistance to rotation. It has no more than nine outer strands, and comprises an assembly of two layers of strands laid helically over a center in two operations. The direction of lay of the outer strands is opposite to that of the underlying layer.

Type I must have an operating design factor of no less than 5, except where the wire rope manufacturer and the equipment manufacturer approves the design factor, in writing.

A qualified person must inspect the rope in accordance with § 1926.1413(a). The rope must be used only if the qualified person determines that there are no deficiencies constituting a hazard. In making this determination, more than one broken wire in any one rope lay must be considered a hazard.

Each lift made under § 1926.1414(e)(3) must be recorded in the monthly and annual inspection documents. Such prior uses must be considered by the qualified person in determining whether to use the rope again.

Rotation resistant ropes may be used as boom hoist reeving when load hoists are used as boom hoists for attachments such as luffing attachments or boom and mast attachment systems. Under these conditions, all of the following requirements must be met:

The requirements in ASME B30.5-2004 sections 5-1.3.2(a), (a)(2) through (a)(4), (b) and (d) (incorporated by reference, see § 1926.6) except that the minimum pitch diameter for sheaves used in multiple rope reeving is 18 times the nominal diameter of the rope used (instead of the value of 16 specified in section 5-1.3.2(d)).

The operating design factor for these ropes must be the total minimum breaking force of all parts of rope in the system divided by the load imposed on the rope system when supporting the static weights of the structure and the load within the equipment"s rated capacity.

Wire rope clips used in conjunction with wedge sockets must be attached to the unloaded dead end of the rope only, except that the use of devices specifically designed for dead-ending rope in a wedge socket is permitted.

Prior to cutting a wire rope, seizings must be placed on each side of the point to be cut. The length and number of seizings must be in accordance with the wire rope manufacturer"s instructions.

Jian Feng Sling Co., Ltd. started up as a small workshop 30 years ago. The company develops steadily. Nowadays, “JIAN FENG” is a well-known brand in China. Jian Feng manufactures lifting and rigging products and the products have been exported to Europe, Australia, the Americas, Japan, Southeast Asia and the Middle East. Jian Feng products are being used in many lifting and rigging projects all over the world.

Jian Feng wire rope sling products are generally made following European production methods. For example, Jian Feng uses press machines that are solely imported from Europe. We are equipped with 3000-ton press machines imported from the UK, 2000-ton press machines imported from Sweden. These press machines are designed solely for the purpose of making wire rope slings in a systematic way.

Jian Feng uses the best materials in making our slings. As an example, we use ferrules imported from Europe. These ferrules are seamless and they provide added safety when compared to ferrules with seams that are commonly used in China.

Jian Feng Testing Center is accredited by the China National Accreditation Service (CNAS) and is recognized by the ILAC-MRA. Jian Feng Testing Center is equipped with 1000-ton test bed, the largest test bed in South China. We are equipped with a wide range of test equipment, which includes 100-ton and 80-ton test beds, fall arrest testing systems for testing safety harnesses. Recently, we introduced a 600-ton fatigue-testing machine for wire ropes.

Jian Feng obtained ISO9000, ISO14000 and OHSAS18000 accreditations long time ago. Most of our products are certified with foreign standards such as GS and CE. Jian Feng’s products have been exported to Europe, the Americas, Africa, Australia, and Southeast Asia.

Fourth, Jian Feng’s synthetic product manufacturing has been growing fast. The annual production has reached 4000 tons. Many of our manufacturing equipment are sourced from Europe and Taiwan.

Cheng Gu: At Jian Feng, we put safety first. And in many developed countries in Europe and North America, safety is also highly emphasized. In developing countries like in part of Asia, the users may not put quality and safety as their first priority, but the scene is changing fast as the countries develop.

In the production of ferrule-secured wire rope slings, we partner with TALURIT from Sweden, bringing in TALURIT’s machines, ferrules and their advanced ferrule securing methods.

Cheng Gu:bauma China is surely a big event for the construction machinery industry in China. Jian Feng and many of our business partners such as SANY, ZOOMLION are exhibiting in this fair. Jian Feng will showcase products for use in cranes and ports. Highlight products are our new crane wire ropes and lifting accessories for crane use. We are also showcasing our chain slings, synthetic slings and tie-down products.

Jian Feng has been developing products in response to the situation. One example is our new crane wire rope socket. We used to import the wire rope, socketing compounds and sockets from Germany. For now, we have developed our own DL08PAK series of wire ropes, and we have developed new ways and new materials for connecting the wire ropes to the sockets. Our new crane wire rope socket is characterized by small size while maintaining high tensile strength similar to those of the imported products. We supply our new crane wire rope sockets and crane accessories to ZOOMLION.

Wire rope is made of plaiting strands of wire – normally medium carbon steel –into a thick cable. The strands are formed around a core. The strands in wire ropes are made of wore twisted together. Strands with smaller diameter wires are less abrasion resistant and more fatigue resistant. Strands made with thicker length of wore are more abrasion resistant and less fatigue resistant.

Left-hand ordinary lay (LHOL) wire rope (close-up). Right-hand lay strands are laid into a left-hand lay rope. Right-hand Lang"s lay (RHLL) wire rope (close-up). Right-hand lay strands are laid into a right-hand lay rope.

Left hand lay or right hand lay describe the manner in which the strands are laid to form the rope. To determine the lay of strands in the rope, a viewer looks at the rope as it points away from them. If the strands appear to turn in a clockwise direction, or like a right-hand thread, as the strands progress away from the viewer, the rope has a right hand lay. The picture of steel wire rope on this page shows a rope with right hand lay. If the strands appear to turn in an anti-clockwise direction, or like a left-hand thread, as the strands progress away from the viewer, the rope has a left hand lay.

Ordinary and Lang"s lay describe the manner in which the wires are laid to form a strand of the wire rope. To determine which has been used first identify if left or right hand lay has been used to make the rope. Then identify if a right or left hand lay has been used to twist the wires in each strand. Ordinary lay The lay of wires in each strand is in the opposite direction to the lay of the strands that form the wire.

Alternate lay The lay of wires in the strands alternate around the rope between being in the opposite and same direction to the lay of the strands that form the wire rope.

The specification of a wire rope type – including the number of wires per strand, the number of strands, and the lay of the rope – is documented using a commonly accepted coding system, consisting of a number of abbreviations.

This is easily demonstrated with a simple example. The rope shown in the figure "Wire rope construction" is designated thus: 6x19 FC RH OL FSWR 6 Number of strands that make up the rope

Each of the sections of the wire rope designation described above is variable. There are therefore a large number of combinations of wire rope that can be specified in this manner. The following abbreviations are commonly used to specify a wire rope. Abbr. Description

The end of a wire rope tends to fray readily, and cannot be easily connected to plant and equipment. A number of different mechanisms exist to secure the ends of wire ropes to make them more useful. The most common and useful type of end fitting for a wire rope is when the end is turned back to form a loop. The loose end is then fixed by any number of methods back to the wire rope.

When the wire rope is terminated with a loop, there is a risk that the wire rope can bend too tightly, especially when the loop is connected to a device that spreads the load over a relatively small area. A thimble can be installed inside the loop to preserve the natural shape of the loop, and protect the cable from pinching and abrasion on the inside of the loop. The use of thimbles in loops is industry best practice. The thimble prevents the load from coming into direct contact with the wires.

A wire rope clamp, also called a clip, is used to fix the loose end of the loop back to the wire rope. It usually consists of a u-shaped bolt, a forged saddle and two nuts. The two layers of wire rope are placed in the u-bolt. The saddle is then fitted over the ropes on to the bolt (the saddle includes two holes to fit to the u-bolt). The nuts secure the arrangement in place. Three or more clamps are usually used to terminate a wire rope.

Swaging is a method of wire rope termination that refers to the installation technique. The purpose of swaging wire rope fittings is to connect two wire rope ends together, or to otherwise terminate one end of wire rope to something else. A mechanical or hydraulic swager is used to compress and deform the fitting, creating a permanent connection. There are many types of swaged fittings. Threaded Studs, Ferrules, Sockets, and Sleeves a few examples.

A socket termination is useful when the fitting needs to be replaced frequently. For example, if the end of a wire rope is in a high-wear region, the rope may be periodically trimmed, requiring the termination hardware to be removed and reapplied. An example of this is on the ends of the drag ropes on a dragline. The end loop of the wire rope enters a tapered opening in the socket, wrapped around a separate component called the wedge. The arrangement is knocked in place, and load gradually eased onto the rope. As the load increases on the wire rope, the wedge become more secure, gripping the rope tighter.

Even with experienced crane operators, it can be challenging to lift a load without incurring stress to the crane, the load or the building’s structure. That’s because, before a load lifts off the ground, the rigging gear is loose and any upward hoisting would first move the rigging gear, not the load. Once the rigging gear is taut and the load is engaged, however, the hoist must be operated very slowly so as not to jerk the load into the air. Excess speed during the critical time of lifting the load off the ground can “shock” the crane system, causing high stress.

Konecranes has the answer: Shock Load Protection. With Shock Load Protection, the hoist drive monitors the load. If it is picked up too fast, the hoisting speed is automatically reduced until the load is in the air. This protects the crane, lifting load and the whole building from extra stress. This, in turn, provides lower maintenance costs for the crane and maximizes cycle times by reducing hoisting speed only during the critical moment of lift off.

Shock Load Protection is designed for smooth load pickups and works to prevent shocks to the load and the crane, extending the lifetime of the crane’s steel structure and mechanical parts. Shock Load Prevention is a feature of Konecranes Variable Frequency Drives for hoist control, and it works to eliminate shock loads automatically. With this automated feature, the operator can focus on controlling the load, monitoring his or her environment and ensuring that the load remains secure. Without the operator needing to purposely slow down operation as the hoist is raised, the crane can operate efficiently, speeding up operation while decreasing the mechanical wear and tear on the overhead crane.

Shock Load Protection is available for overhead cranes with, or with the capability of having, Variable Frequency Drives. Contact a Konecranes Representative to see if Shock Load Protection or any of our other Smart Features, can help your business.

In the rigging industry, the most commonly produced type of carbon steel is low carbon steel and medium carbon steel, because they can be formed very easily due to the right wt% C, and after heat treating(Quenched & Tempered), their mechanical properties will be changed to ductility, hardness, yield strength, or impact resistance.

Alloy steel is steel that is alloyed with a variety of elements to improve its mechanical properties. Most commonly, all steel is an alloy, including carbon steel, while in the rigging industry field, the phrase “alloy steel” refers to a very specific type of carbon steel, combined with the element, manganese, chromium, or both, this increased strength and to help fight the brittleness that many types of untreated steel display, especially after the heat treatment. It is used in our

Stainless steel also known as inox steel (meaning inoxidizable from the French word inoxydable), is actually a type of alloy steel mixed with a minimum of approximately 11% chromium, nickel, molybdenum, and extremely low carbon as one of its elements. The other alloying elements may vary according to the structural and chemical properties required for the stainless steel.

Normally, when carbon steel is exposed to moisture, it undergoes a chemical transformation, known as oxidation, that changes their properties, although stronger and more durable, if there is no additional protection against rust on the surface, such as hot dipped galvanized, zinc plated or painted.

Carbon steel and alloy steel are stronger and harder than stainless steel for high carbon content changes the characteristics of steel, whereas alloy steel is the strongest of the three, for its includes element, manganese, chromium, modify the properties of the metal, especially after the Quanched and Tempered, and it can resistant to rust and corrosion without galvanization.

Although carbon steel lacks the corrosion-resistant properties of its stainless steel counterpart, and not stronger and harder than alloy steel, it is less expensive and can create a wide range of steel alloy specific applications by adding the element combinations.