#Turbine casing crack repair on site

[metalstitchinglocking]

Cracks Cast Iron Repair and Repair of Damaged Engine Block

On-site Metal stitching sometimes serves as the only feasible method to fix cast iron problems and repair an otherwise damaged part or large piece of equipment. Cast iron and other cast metals are unable to be repaired using traditional welding techniques, which frequently cause additional damage to the component being welded. After an inspection, we were able to suggest a fix to save the severely damaged block by metal stitching as we have been helping clients for 40 years with the repair and maintenance of these engines. RA Power also suggested that after the entire engine was rebuilt in its workshop, it be installed aboard the offshore vessel. Dial +91-9582647131, Tel. +91-124–4378292.

[rapowersolutions234]

Repair Of Casting Cracks | Metal Stitching And Metal Locking

Metal locking and metal stitching processes have been used by RA power solutions technicians for more than 44 years to repair of casting cracks and damage casting. Cracks in casting are primarily influenced by melt quality, casting equipment, casting process conditions, and grain structure. The repair of cracks in casting by metal stitching and metal locking has a definite advantage over the repair of cracks by welding. For the successful repair of broken, cracked, and fractured casting parts, metal stitching is becoming increasingly popular. The services of crack repair of casting cracks and aluminum parts are offered 24/7, and we are considered to be cost-effective. All crack repairs of metal stitching and crack repairs of damage casting are undertaken with a guarantee. For more information, repair of crack casting, Turbine casing crack repair on site, and crack repair damaged casting rectification Contact us at rajshahani@rapowersolutions.com, info@rapowersolutions.com or call us at +91 9582647131, or +91 9810012383.

[swissforextrading]

A self-healing composite

06.03.19 - Researchers from EPFL's Laboratory for Processing of Advanced Composites have developed a material that can easily heal after being damaged. This cutting-edge composite could be used in aircraft, wind turbines, cars and sports equipment. When a wind turbine blade or an airplane is hit by something, the damaged part has to be either replaced or patched with resin. Replacing the part is expensive, while repairing it with resin can make it heavier and change its properties. But now, thanks to a new, patented technology, researchers at EPFL have found a way to quickly and easily repair cracks in composite structures. "With our technology, a repair agent is incorporated in the composite material," says Amaël Cohades, a researcher at EPFL's Laboratory for Processing of Advanced Composites (LPAC). Cracks in the resin can be repaired on site in little time by simply heating the material to 150°C. The heating process activates the repair agent, and the damaged part quickly heals, without any change to the original properties. This new-to-the-market technology can be applied to all sorts of structures, extending their lifespan at least threefold. The material’s properties and initial crack resistance are the same as those of traditional composites. What’s more, the technology is compatible with current manufacturing processes, so production facilities do not need to be retooled. This technology could be particularly useful for wind turbines and storage tanks. "The cost of maintaining the world's wind turbines alone is estimated at 13 billion Swiss francs in 2020," says Cohades. He says the technology could also be applied to "many parts that we don't bother to repair at present, like bikes and car bumpers." One limitation is that the material doesn't heal if the impact breaks the fibers. But since the resin is always damaged first, this heat-based self-healing system would still work in the majority of cases. A prototype on display at the World Composites Show Thanks to an EPFL enable grant, designed to help EPFL scientists move their ideas out of the lab, the researchers were able to create a standard aerospace prototype. This part, made from fiberglass-reinforced resin, demonstrates how the healing process works. It will be presented at the JEC World Composites Show in Paris from 12 to 14 March 2019. In addition, the researchers are now setting up a startup to market the new materials. For more information: comppair.ch Sarah Aubort http://actu.epfl.ch/news/a-self-healing-composite (Source of the original content)

[shippingcontainerworld]

Holtsville NY 00501

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Shipping Container Depot offers custom container modifications at our facility or done on site at your home or business

Delivery Container Depot is the leading retail supplier to the public for new and used shipping and delivery containers purposed for your storage and shipping container needs. We provide unbeatable wholesale rates including fast delivery, reliable customer service, storage container relocations and modifications done to your container at our facility or on site at your home or business.

Delivery and Storage Containers For sale

Welcome to Delivery Container Depot! We’re very pleased you stopped by; and we encourage you to leisurely browse through our online site and familiarize yourself with the vast array of transport containers we provide. If you are looking for shipping or storage containers that are new, used or refurbished that have been manufactured under stringent ISO specifications, then you’ve come to the right place! We pride ourselves in being able to deliver delivery container options that cater to every personal or business demand! Do you have need for a container to be relocated? Not a problem! We will be happy to do that for you, as well.

Shipping Container Depot remains a frontrunner in the shipping and storage container industry; and we are known for our certain wholesale selling prices with ISO shipping and delivery containers, portable storage and freight cargo containers. Our desire is to continuously pass wholesale savings onto our customers; and we accomplish that through our unyielding efforts to eliminate the middle-man and brokers. Delivery Container Depot also guarantees that our new/used (except for ‘As/Is)/refurbished/cargo-worthy containers on the market or lease will be delivered in certified wind and water-tight or cargo worthy problem!

Our highly-reliable ISO-grade steel containers–whether intended for storage or shipping–are available for purchase or hire; and are acquired directly from delivery lines all across the United States and the world. In addition, Shipping and delivery Container Depot will be happy to perform customized modifications to your transport and storage containers, either at our facility in Los Angeles and Oakland California or at your personal residence or business address. Catering to our customers and keeping them highly-satisfied with our products and services remains our #1 goal!

Types of Shipping and Storage Containers:

Whether you require smaller delivery and storage containers or larger, you could choose from 10-foot lengths up to 45-foot length options. We provide the following:

1:New Containers:

‘Single-Trip’ Containers:

Transport Container Depot offers ‘single-trip’ transport and storage containers available for purchase in the Los Angeles area and throughout the United States. Industry standards dictate that ‘one-trip’ containers are the only type that can be designated as ‘new’. To provide a bit of clarity, ‘one-trip’ containers are shipped from other countries to the United States carrying a single load or these containers have made only one voyage across the ocean. One-trip delivery and storage containers are available in three lengths: 10-foot, 20-foot and 40-foot selections. Feel free to contact our office for further details!

2:Used Containers:

‘As/Is’ Containers:

Our ‘As-Is’ shipping and delivery and storage containers offer the most affordable, ‘used’ option. Though these items are not supplied with a wind/water-tight guarantee, we are very selective and choose only those used containers that were originally manufactured under very strict ISO production standards.

‘Wind/Water-Tight’ Containers:

The Wind & Water-Tight grade provide the most economically-priced option of containers that have an accompanying guarantee; and that guarantee applies to on-site storage usage. It assures our customers that their Wind & Water Tight containers are covered for a minimum of 2 years from the purchase date. Additionally, we provide coverage for on-site repairs at no further cost. Though some restrictions apply, we will be happy to discuss our generous guarantees with you!

The WWT containers are anywhere from 7-15 years in age and have been retired by transport lines which have offered them to the retail market.

Cargo-Worthy Containers:

Are you looking to purchase a Cargo-Worthy shipping or storage container? If so, this is an excellent choice; and these incredibly rugged receptacles have the advantage of having been inspected by a certified marine surveyor. The surveyor’s professional inspection confirms a container’s structural integrity and stout durability-exactly what one would expect and require to ship cargo overseas, without concerns. Marine certification is mandated by transport lines for container-transport, abroad. Even if no overseas shipping is anticipated, having marine-certification pledges that you are receiving a unit that will last for years to come!

3: Refurbished Containers:

If refurbished containers are what you’re searching for, you’ll be pleased to know that Delivery Container Depot offers the lowest-prices on fully-refurbished containers! Our renovated-container inventory includes only quality units that are structurally-sound and undamaged. We scrutinize all units prior to our purchasing them and each accepted unit undergoes a thorough renovation by our skilled staff.

Flooring:

Our inspection team thoroughly examines the floors and will accept only those units that possess the original marine-grade plywood flooring material. We see to it that all flooring is absolutely intact, void of any previous repairs that might have occurred using a different type of wood.

Rust:

Each refurbished container is subjected to an exhaustive detailing process where any indications of rust are completely removed, both inside and out. Any previous rust spots and rough edges are sanded to create a smooth finish.

Paint:

A new coat of paint is professionally applied and the container looks new once again!

Doors:

All doors are inspected for any possible malfunctions and are then lubricated to ensure effortless- functionality. Worn or cracked rubber door-seals are replaced to make certain the container is air-tight.

4: Customized Shipping and Storage Containers:

As stated earlier, Shipping Container Depot provides a variety of customized modifications for your delivery and storage containers at our Los Angeles and Oakland location or a location of your decision. You may choose between the following:

turbine or louver vents–for heat ventilation

roll-up doors, double doors, pedestrian doors, sliding doors–in various sizes, providing easy access

lock-box–for theft protection

electric packages–for lighting and power

partitions and shelving–to provide organizational options for your personal belongings or commodities

windows& skylights-to deliver natural lighting

HVAC-for comfortable temperature control

office containers/living quarters – transport containers converted into offices & living quarters

Contact Us

Our team at Shipping Container Depot would love to hear from you! We will be more than happy to address any inquiries you might have. There are a number of ways it is possible to reach us:

If you are in the Los Angeles area, stop by at any time-we’d love to meet you and discuss your options!

We also provide Job Site and Office Containers that feature:

floors

doors

windows

ventilation

electrical

restroom facilities

Our Office containers are custom built to your specifications making them the perfect choice for onsite mobile offices.

Port Containers USA is one of America’s leading distributors of shipping containers available. Selling and delivering a wide range of new and used Conex box, Intermodal and ISO containers all across America. With a customer base that includes federal and state government departments, local councils, mining, utility and construction companies, as well as the general public, you may rest easy knowing that when you buy a shipping and delivery container from Port, you’re getting a guarantee of quality.

Fast and Easy Container Delivery America-Wide

Many people are concerned that delivery of their shipping and delivery containers will be complicated or problematic. But that simply isn’t the case, because while it sounds counter-intuitive (given the size and weight of the things) shipping containers have been designed specifically for their portability. There are some things that will need to be taken into consideration prior to delivery of course (access to your site, the type of truck we need to use etc) but we will discuss this with you before you make your purchase. Plus, we deliver all over America, so no matter where you are, from New York to New Mexico, Oklahoma to Ohio, we can have a new container to you in no time at all.

shipping-containers-for-sale-in-the-usa-001

Wide Range of Quality Containers for Shipping Cargo

Need to export goods overseas or ship them across the country? We have a range of new and used 20 foot and 40 foot shipping and delivery containers (see below) that you’ll be able to choose from to ensure your goods are shipped safely and efficiently. These include standard, high cube, side loading, insulated, refrigerated, flat rack and open top containers. Port Containers can also supply you with the CSC certificate required for interstate rail or sea transport if required.

The Very Most effective Costs

Right now there are around 17 million shipping containers transporting goods and cargo all over the world. And whilst a lot of containers are used many times over for shipping goods, others are used just once before they’re on-sold. In fact it is often cheaper for a company to purchase a new shipping container, ship the goods and then sell the container, rather than arrange to bring it back or reuse it. As a result, we have thousands of used and near-new shipping containers available for sale at remarkably competitive costs. At Port Containers we get directly from the source. So you always have the ideal price.

Make Sure You Acquire Your Container from a Quality Provider

It is important to make sure you obtain from a legitimate container company such as Port Containers. Transport containers are used to transport all sorts of goods, including chemicals and organic goods that can leave unpleasant or even dangerous odors that could ruin items you decided to store or ship in it. So if you’re buying a second hand container you can’t inspect or return, you could be left with a huge problem. At Port Containers, we make sure all our containers are of the highest quality.

Invest in A 20′ OR 40′ Shipping CONTAINERS

20 Foot and 40 Foot General Purpose Transport Containers

These are the most common general purpose cargo containers. Available in 20 foot and 40 foot sizes, made from Corten metal, they are wind-proof, waterproof, rodent-proof and incredibly tough. They have to be! They’ve been built to travel around the world on the decks of ships in all sorts of weather and climates, stacked up to seven containers high.

20 Foot and 40 Foot High Cube Shipping Containers

High cube containers are almost exactly the same as general purpose containers, but they have an extra foot in height. This gives you extra space for your goods and allows taller or bulkier goods to be shipped or stored.

20 Foot and 40 Foot Side Opening Delivery Containers

Side opening transport containers are a specialized container designed for easier access when loading and unloading. Along with the standard double doors at the end, the side of a side opening shipping and delivery container has been modified to become two extra doors. This makes loading and unloading a transport container fast and productive, especially if the good are being loaded by forklift.

20 Foot and 40 Foot Open Top Shipping Containers

Open top delivery containers are designed for goods that are most efficiently loaded from the top via a crane or other methods of top loading. Once loaded, the container is covered and secured by a heavy-duty tarpaulin. And once the tarp has been lashed into place, the shipping container is as secure and weather-proof as a normal transport container – and it can also be stacked on top of (or underneath) other shipping containers if being sent by sea.

20 Foot and 40 Foot Flat Rack Transport Containers

Flat rack shipping containers are used for bulky or oversized goods (like machinery) that won’t fit into an ordinary shipping and delivery container. Flat rack containers don’t have a roof, and some come with ends that can collapse if required. Others have no ends at all. Like all ISO delivery containers, a flat rack container has been designed for easy mobility and can be transported from truck to port to ship to port to rail to warehouse easily and efficiently.

20 Foot and 40 Foot Refrigerated Containers

Refrigerated shipping and delivery containers, also known as reefers, are required for when you need to ship perishable goods like meat, seafood, dairy or other foodstuffs at a controlled temperature.

20 Foot and 40 Foot Insulated containers

Insulated containers are refrigerated containers that have been decommissioned. Their insulated features are perfect for shipping items that don’t necessarily need to be kept refrigerated, but do need a steady temperature. This container is fantastic for things like flowers, fruit, vegetables, medicines and chemicals.

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[engineercity]

Новости сайта #ENGINEERING - 工程

New Post has been published on http://engineer.city/tough-turbine-tech/

Tough turbine tech

Angular contact ball bearings and spherical roller bearings ensure the reliability of innovative wind turbines

The UK-based manufacturer of advanced wind turbines, 4Navitas, has specified angular contact ball bearings and housed spherical roller bearings from Schaeffler UK for use on its 4N-55 wind turbine, the world’s first commercially viable medium-sized 55kW vertical axis wind turbine.

Based in Blackpool, 4Navitas designs and manufactures vertical axis wind turbines (VAWT). These turbines offer a very reliable, efficient and cost-effective alternative to conventional horizontal axis wind turbines. They are quieter, more bird and bat-friendly and are less costly to maintain compared to horizontal turbines.

The 4N-55 is a 55kW rated VAWT. Three years in development, this radical new design is manufactured in the UK and incorporates a range of patented design features that enhance power-generating output at low wind speeds and considerably reduce the total costs of ownership.

Self-starting turbine

Paul Cook, design and engineering director at 4Navitas, comments: “The 4N-55 is a self-starting turbine that can be programmed to suit a site’s specific wind characteristics. It does not require sensors or motors to position itself into the wind, thus eliminating the need for complex control gear, which in turn eliminates a major cause of horizontal wind turbine failures.

“Unlike most wind turbines, the 4N-55 has very few serviceable components at height. Due to its design characteristics and the fact that the majority of serviceable components are at ground level, repairs and servicing can be carried out expeditiously without the requirement for expensive craneage and cherry-pickers.”

Bearings are a key element of the design of the 4N-55. In early prototype versions of the wind turbine, spherical roller bearings (not supplied by Schaeffler) were used to support the main hub spindle.

However, as Cook explains, these bearings were not fit for purpose: “The original bearings were skidding due to fluctuating loads from the wind. This caused discolouration and wear of the bearing raceways, which would have led to catastrophic failure of the bearings had we not intervened. We therefore looked for an alternative bearing supplier, one that we could work closely with to find the right type of bearing for the application.”

Schaeffler has been working with 4Navitas for over three years, providing engineering support and supplying bearings for both the main rotor hub of the 4N-55, as well as housed spherical roller bearings that support the main drive shaft.

Initially, engineers from 4Navitas sat down with an application engineer from Schaeffler UK to discuss the dynamics of the wind turbine, including the loads on the rotor hub and all the other technical details required to enable Schaeffler to select and size the most appropriate bearings.

Main rotor hub bearings

David Robson from Schaeffler comments: “By engaging with 4Navitas early in its design and development phase on the 4N-55, we were able to select a more suitable bearing for the main rotor hub. The bearings we selected were single row angular contact ball bearings arranged in a pair supporting the top and bottom of the rotor hub. We also suggested the use of housed bearing units to support and guide the 2.5 tonne, 25m-long main drive shaft. These are housed spherical roller bearings in a plummer block design with tapered sleeves. As well as supplying bearings, we also advised on methods of assembly, tooling and lubrication.”

By changing the main rotor hub bearings from spherical roller bearings to angular contact ball bearings, 4Navitas achieved the high performance levels and high reliability that it required on the 4N-55. The prototype version of the 4N-55 is now in full production phase, the first turbine is already installed with a customer in the agricultural sector and the company is currently in manufacturing to fulfill orders for the next 10 units, and is in discussions regarding licensing the technology worldwide.

Cook states: “The main rotor hub on a wind turbine is absolutely critical to its performance and reliability. By changing from the original spherical roller bearings to angular contact bearings, we achieved the high reliability and performance that we wanted, but we were then faced with new challenges in terms of how to assemble the rotor hub correctly and how to ensure that the main drive shaft was manufactured to much tighter tolerances and run-outs than was previously the case. We also had to completely redesign our assembly tools. In fact, the whole philosophy of how we manufactured the main rotor hub changed. However, Schaeffler has supported us all the way through this process, advising us on assembly methods, lubrication volumes for the grease pockets on the rotor hub and bearing mounting procedures.”

Simplifying assembly

In addition to bearings, Schaeffler also supplied an induction heater to assist 4Navitas in mounting the bearings to the rotor hub and tower shaft.

Prior to mounting, bearings must be heated uniformly. If heat output is too high, this can cause temperature differences between the inside and outside of the workpiece, which in turn, can lead to cracks or distortions in the material.

To prevent this, Schaeffler’s FAG induction heaters are equipped with various features, including temperature-time (ramp) controls, which prevent overheating of the bearing.

Schaeffler supplied its Heater600 induction heater, which is also equipped with a sliding table to help reduce the risk of damage whilst positioning the bearing.

Tags: 

engines

turbines

power

4Navitas

Images: 

Categories: 

Power Engineer

Engines & Turbines

Source: engineerlive.com

[metalstitchinglocking]

Due to heat generated, it is not possible to repair cracks and damage to cylinder heads, cylinder liners, and components made of aluminium or cast iron using the welding procedure. Generally, metal locking and metal stitching surgery may fix any heavy components made of aluminium casting. For more information on aluminium crack repair, repair of aluminium cast pistons, and cast iron or steel casting components call +91 9810012383 and email info@rapowersolutions.com. 

[metalstitchinglocking]

RA Power Solutions is the only company which can also execute the crack repair by metal stitching & metal locking onsite/ on a vessel. The repairs are also possible while sailing the vessel. Call on +91 9582647131 and email info@rapowersolutions.com for more detailed damage cast iron repair by metal lock.

[metalstitchinglocking]

Repair cast iron is our specialty. Cast iron parts can develop cracks for a number of reasons or incidents. The cast iron parts can occasionally be broken into pieces. There is absolutely no justification for rejecting or changing the component. Cast iron has previously had cracks. repaired using an antiquated, outdated welding method that is no longer used in the business since the outcomes of welding-based repairs are not always effective. For more detail email  info@rapowersolutions.com, or tel. 0124-4251615.

[rapowersolutions234]

Insitu Crack Repair By Metal Stitching And Metal Locking | Repair By Cracked Engine Block

Most repairs can be done in situ with few or no dismantling, saving you time and money. RA Power provides the services and manufacture by Onsite and Insitu crack repair by metal stitching and metal locking. Also, we have been undertaking the repair & maintenance of heavy equipment in industries, power plants, and diesel engines installed on the vessel. Without welding, metal stitching is a unique emergency repair method for repairing cracks and joining parts of broken cast metal components. The main advantage of the metal lock and metal stitching process for repairing damaged, or cracked, engine blocks is that no heat is generated during the procedure. We have successfully repaired more than three thousand cracked, damaged, or rejected engine blocks, compressor casings, heavy equipment, etc. For more information on engine block stitching, turbine casing crack repair on site, metal locking, cast iron engine block metal lock, and engine block metal locking contact us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.