Complete Supply of Valve Components

B&B Precision work closely with a number of customers in the valve industry. Our range of complimentary services allow us to supply complete components to your specifications.

What Sort of Materials?

As a sub-contract manufacturer we are used to dealing with a wide variety of materials and these would include Cast Steels, Cast Iron and Cast Magnesium that are often used in valves. We are also able to machine ‘hard’ and ‘exotic’ materials such as Inconels, Monels and Kovar. As well as working from your castings or free issue material we are also able to source our own and will provide full traceability of materials.

What Sort of Components?

We are able to work on a wide range of components for a variety of different valves. This would include common components such as: Yokes, Stems, Packing, Seat Rings, Gaskets, Guides, Plugs, Pistons, Shafts and Impellers. Working from your drawing we are able to produce complicated valve components that are often intricate in nature and require tight tolerances. Our maximum capacity is 1626mm x 813mm x 1062mm.

Finishing Options

As well as the full supply of material and machining of parts, B&B are also able to offer Thermal Spray Coating of Valve components. These coatings are most often used in extreme wear and corrosive environments with high temperatures. Common coating materials include Stellite 6 and Tungsten Carbide.  In many cases our Valve customers will come to us initially for the coating of their valves and then find it most cost and time effective to have us supply complete. Alongside our own in house HVOF coatings, we also have close partners who we use for additional finishing services such as Anodising and Painting.

If you are looking for a reliable machinist with many years of experience, then please get in touch. B&B are based just off the M1 in West Yorkshire but serve the whole UK. We are fully ISO certified and competitive in small to medium volumes.

Can You Handle The Heat? High Temp Coatings.

Industrial Processes across a wide range of industries must operate in aggressive environments which contain high temperatures, high pressure and a high level of stress put on individual components. So what materials and processes can help extend the part life in these environments?

Metal Alloys

Metallic Alloys are used in high temperature applications due to their strength, ductility and toughness coupled of course with their high melting point. Selecting the right Alloy is not necessarily straight forward though, as each and every Alloy will react differently when exposed to prolonged periods of high temperatures. As such a number of ‘Super Alloys’ have been developed specifically with high temperatures in mind, and some common ingredients in their makeup includes materials such as Chromium, Aluminium, Tantalum, and Titanium. One example of a Super Alloy would be 602A which is an austenitic heat resistant alloy that is the strongest and most oxidation resistant wrought alloy for use above 1040oc. The issue with Super Alloys such as these is that they are often designed solely with temperature in mind and in many cases components will still need surface protection against corrosive environments.

Hard Chrome

Chromium tends to soften in elevated temperatures, although it retains its low coefficient of friction and resistance to oxidation and corrosion. Hard Chrome Plating will provide the resistance to abrasion and chemical attack, and one example of its use would be on Forging Die Impressions where it is in contact with use hot steel, but still adds substantial wear life to the die. In terms of its effectiveness at High Temperatures. Hard Chrome has a peak operating temperature of 400oc, but with prolonged exposure will begin to soften at around 260-280oc and loose hardness. This coupled with hard Chrome’s inherent environmental issues means many manufacturers have been looking for an alternative.

HVOF

An alternative to Hard Chrome that could still compliment the use of Super Alloys would be HVOF. A Thermal Spray Process, powdered material is heated up and fired out at extreme velocities forming a coating which is characteristically hard and dense in nature with a very low porosity and high hardness. This process can be used to coat several materials that would be suitable for High Temperatures including Inconel 718, Ceramics, Chromium Oxide and Tungsten Carbide. Tungsten Carbide Coatings in particular can operate in temperatures up to 500oc, and will withstand prolonged exposure up to around 400oc. Tungsten Carbide Coatings also outperform Hard Chrome Plating when it comes to the corrosive sources they are resistant to. If you have a component that needs to function at High Temperatures then get in touch today and our team can recommend a coating option suitable for your application. B&B are fully ISO certified and based in West Yorkshire.

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Anyang Hongmai New Material Co., Ltd(Rurui Carbon black) is an leading carbon black factory with research, production and sales, located in Anyang city, Henan province in China, and have branch company in Shanghai and Guangdong. We have 2 product lines of carbon black with annual output 30,000 tons, which mainly used in coating, ink, sealants, plastic, paper and other products. Also we have 2 product line of carbon black paste with annual output 10,000 tons, mainly used in silicone sealant. We have rights of import and export . our products have been passed SGS certification and exported all over the word.
Contact person: Qingwei Li
M. Phone: +86-13569004301
Wechat: 13569004301
Email: fr.carbonblack@gmail.com
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10/27/17
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#Cathodic #Protectionis a technique used to control the #corrosion of a #metal surface by making it the #cathode of an #electrochemical cell.
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Diamond friction: simulation reveals previously unknown friction mechanisms at the molecular level

http://www.iwm.fraunhofer.de/en/press/press-releases/01_09_17_diamondfrictionunknownmechanisms.html

Diamond coatings help reduce friction and wear on tools, bearings, and seals. Lubricating diamond with water considerably lowers friction. The reasons for this are not yet fully understood. The Fraunhofer Institute for Material Mechanics IWM in Freiburg and the Physics Institute at the University of Freiburg have discovered a new explanation for the friction behavior of diamond surfaces under the influence of water. One major finding: in addition to the known role played by passivation of the surfaces via water-splitting, an aromatic passivation via Pandey reconstruction can occur. The results have been published in the journal Physical Review Letters.
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Marine Coatings Market worth $10.4 Billion by 2019

The report, Marine Coatings Market by Type (Anti-corrosive, Anti-fouling, and Others), and based on Chemistry (Epoxy, Polyurethane, and Others) - Global Trends & Forecasts to 2019”, defines and segments the marine coatings market with an analysis and forecast of by product type, based on chemistry by volume as well as value.

Browse 84 market data tables and 59 figures spread through 168 pages and in-depth TOC on “Marine Coatings Market by Type (Anti-corrosive, Anti-fouling, and Others), and based on Chemistry (Epoxy, Polyurethane, and Others) - Global Trends & Forecasts to 2019”

http://www.marketsandmarkets.com/Market-Reports/marine-coatings-market-234885004.html

Early buyers will receive 10% customization on reports.

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New innovative process improves the adhesion of diamond to cemented carbide

http://www.iwm.fraunhofer.de/en/press/press-releases/31_07_2017_processimprovesadhesionofdiamondtocementedcarbide.html

To reduce process costs in industrial parts manufacturing while simultaneously improving quality, the use of diamond-coated, cemented carbide cutting tools has increased. Adhesion of diamond coatings was previously problematic, particularly when processing composite or lightweight materials. Suitable pretreatment is therefore vital. Dr. Manuel Mee of the Fraunhofer Institute for Mechanics of Materials IWM has developed a new pretreatment routine that increases the adhesion of CVD diamond to carbide: by combining several approaches into a single process, all factors which affect the adhesion of the coating can be taken into consideration, leading to a fundamental improvement of the adhesion.
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Steel Rolling for Longer

Steel Rolling employs a deceptively simple principle. Metal Stock is passed through one or more pairs of rolls, which reduces its thickness and produces a flat, even sized sheet of material. As a process this has a long history with crude Rolling Mills found back as early as 600 BC, and in Europe the invention may be attributed to Leonardo Da Vinci. Today there are many types of rolling processes, including ring rolling, roll bending, roll forming, profile rolling, and controlled rolling.

Needless to say a key component in all of these processes are the rolls themselves. Any Roll whether employed in hot or cold rolling techniques undergoes a high level of wear that affects it’s part life and must also contend with an often hot oxidising environment, corrosion and fatigue.

In order to combat this, Steel Mill Rollers have been manufactured out of Carbon Steels, Aluminium, Stainless Steels and other non-ferrous metals. Although these metals may be suitable, they often don’t have the desired part life and the cost of replacement can be quite steep. Two ways that manufacturers have sought to address this are through the use of higher grade alloys that utilise chromium and tungsten and through electro-plating techniques such as Hard Chrome Plating.

Hard Chrome Plating does produce a smooth surface, but is under threat from European restrictions on Hexavalent Chromium due to the carcinogenic nature of the process. Using higher grade alloys may extend the part life, but normally has cost implications especially at the moment where materials such as Tungsten are listed as Conflict Minerals.

Rather than sourcing this material, a more viable option might be HVOF. HVOF is a process which takes powdered materials, heats them up and fires them out at extreme velocities in order to effectively ‘spray’ them onto the material. Rather than using Tungsten Carbon Alloys as a base material, HVOF would allow you to use a cheaper grade of metal, coat it with Tungsten Carbon and in this way protect the part at a lower cost, whilst increasing the part life of your roller. HVOF can be used to coat a wide variety of cermet materials suitable for different applications meaning you can effectively tailor the solution to suit your needs.

If you’re working for a way to extend the part life of Steel Mill Rollers or anything that is likely to encounter high levels of wear, corrosion or temperature than HVOF might be exactly the process you are interested in. Get in touch with B&B Coating to see how we can help you with your application.
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