Tag Archive for heat treatment for metals

Heat Treatment and Homogenising

aluminium-heat-treatment-alloy-nitecWhen you think of heat treatment, I wonder what type of metal you associate it with?  Aluminium is probably not the first metal that springs to mind.  Why?  Because it is thought of as being a soft metal.  But there are certain, specific alloys which respond incredibly well to heat treatment, in fact, they actually respond in almost the same way as steel and iron.  So, what are the specific types of aluminium alloys?  They are aluminium alloys containing copper, zinc, or a blend of magnesium and silicon which enable them to respond well to the heat treatment process.  Be aware that pure aluminium and aluminium alloyed with manganese or magnesium does not work under heat treatment.  Therefore, when referring to the heat treatment process during this article, it is aluminium alloys containing copper, zinc or a blend of magnesium and silicon that is being referred to.

Harmonious Homogenising

Aluminium alloys come in to contact with the mold via their outside edge first, which forms a layer or skin of aluminium crystals, which are called grains.   This occurs when aluminium alloys are being cast.  They cool from the outside in, with the elements of the alloy precipitating which locks crystals in regionally.  This is how some areas become hard and some remain soft.  To even this imbalance out, we need homogenizing, so that redistribution of the precipitation can occur.  This means that the temperature needs to be taken to just below melting point which is between 900 and 1000 degrees farenheit.  Having reached the homogenizing temperature, the component is left to cool slowly, so that the internal structures uniformity is reached.

Annealing Aluminium Alloys

If you then require you aluminium alloys to be shaped, you will then require another process which is known as annealing.  The alloys must be heated once again to 570°F to 770°F for anywhere between thirty minutes to three hours, depending on the alloys composition and the component part.  Unlike the heat treatment or homogenising processes, the cooling process post annealing is not a critical factor in this process.

NiTEC UK and You

If you or your business are interested in the heat treatment process, or plating whether it is tin plating electroless nickel plating or copper plating, then why not get in touch with NiTEC UK.  A Derbyshire based company, we are leading specialists in the plating industry offering a wide range of well-developed, tried and tested techniques which are high-end and also cost effective.  We have experience of working for many different industries, including the aerospace, medical, army and automotive industries, to name but a few.  We offer our services to the whole of the UK, Germany, France, Brazil and Holland.  Call us today on 0845 224 3571 or alternatively you can email us at info@nitec-enp.co.uk

Spring in to Action in Birmingham with Heat Treatment Services

heat-treatment-nitec-ukApril sees the MACH exhibition at Birmingham’s NEC, where manufacturing in motion will be made visible to anyone wanting to view different techniques and products related to many services, including that of heat treatments, hard coatings and developmental services.

Groups, such as Wallwork Group, are returning again to exhibit here, to celebrate their new expansion project which allows them to offer customers a wider array of heat treatment services, hard coatings and development services.

Heat Treatment and NiTEC

For businesses such as Wallwork Group and NiTEC UK, exhibitions such as MACH, are important ways of bringing business and contacts together from across the industries.  These can include aerospace, automotive, medical, military and engineering contacts which are the most commonly used industries.  Specialists, skilled labourers, technical engineers and highly knowledgeable scientists combine their expertise to guarantee that you gain the product and information that you require so that you gain the perfect component parts for your business.  They are all at hand to help guide you towards the components which is best for you whilst also, often, making you a great, one-off show day deal, to aid with the financial side of things, too.

NEC, Industry, You and Me

So if you are in the aerospace, automotive, medical, military, engineering, oil and gas or energy/power industries then MACH could very well be the placed for you.  With new creations, the latest of developments and all the manufacturing technologies you could possibly need, there will be over 600 companies exhibiting this year for you to see.  At the last MACH there was 6,500 tonnes of live working machinery on show and two years later, it is set to be even bigger.  If you are interested in attending or finding out more about heat treatments or hard coatings then why not get yourself to Birmingham NEC from the 11th to 15th April – We guarantee it will be worth it if you are in the specified industries.

Contact NiTEC UK Today

If you would like more information regarding heat treatment then why not get in contact with NiTEC UK.  A Derbyshire based company, we are leading specialists in the heat treatment and plating industry offering a wide range of well-developed, tried and tested techniques which are high-end and also cost effective.  We have experience of working for many different industries, including the aerospace, medical, army and automotive industries, to name but a few.  We offer our services to the whole of the UK, Germany, France, Brazil and Holland.  Call us today on 0845 224 3571 or alternatively you can email us at info@nitec-enp.co.uk

Everything you need to know about Shot Blasting

shot-blasting-electroless-nickel-plating-nitecShot blasting is a key factor in the fabrication process.  It is essential so that a clean finish can be provided in order for welding to be undertaken.  It also enables a keyed surface to be produced so that paint can be accepted by the prepared façade.

The Process of Shot Blasting

Shot blasting is undertaken by shot being fired or ‘blasted’ directly at steel, yes, the process is all in the name.  The force of the shot being blasted at the surface of the steel displaces dirt and scale, therefore cleaning the steel and preparing it for the welding process.  This is due to the indentations caused by the shot repeatedly hitting the steel surface, creating a rough texture, which is approximately 70 microns deeps.  Due to this abrasion, it enables paint to stick properly and long term to the steel surface, which creates protection and aids longevity to a component part.

Shot Blasting and Electroless Nickel Plating

The shot blasting preparation is often performed prior to the electroless nickel plating process, but for this to happen the surface preparation must be high quality and thorough, which is why shot blasting is used.  To achieve the ultimate final surface finish, chemical cleaning and activation processes, such as aluminium oxide 180-220 grit are used.  By choosing NiTEC UK to undertake your shot blasting and electroless nickel plating solutions, you know that the standards met will be the highest every time.  At NiTEC UK, the stainless steel shot blasting booth has the capacity to take 216m³.  This minimises the particles which settle on the component parts during their shot blasting or heat treatment processes.

Contact Us Today at NiTEC UK

If you or your business are interested in the shot blasting process, electroless nickel plating or heat treatment which may require specialist assistance, then get in touch with NiTEC UK?  A Derbyshire based company, we are leading specialists in the plating industry offering a wide range of well-developed, tried and tested techniques which are high-end as well as also being cost effective.  We have experience of working for many different industries, including the aerospace, medical, army and automotive industries, to name but a few.  We offer our services to the whole of the UK, Germany, France, Brazil and Holland.  Call us today on 0845 224 3571 or alternatively you can email us at info@nitec-enp.co.uk if you need more information.

 

Clean, Strengthen and Polish Metal with Chilled Iron Shot-Blasting

shot blasting services

What is shotblasting used for?

Shotblasting is a method which is used to clean, strengthen or polish metal.

This method is used in a variety of industries, including aerospace, automotive, construction, shipbuilding and foundry. Basically, it can be used in any industry that uses metal!

Airblasting

Airblasting is a form of shotblasting that is carried out using a blastroom or blast cabinet. The blast media, for example iron, is pneumatically accelerated by compressed air and projected by nozzles onto the compartment.

The shotblasting media itself can be mixed with water, which is called wet blasting. In wet blasting and air blasting, the nozzles can be installed in fixed positions or they can be operated manually. They can also be operated using an automatic nozzle manipulators or even robots.

Shotblasting facilities at NiTEC

At NiTEC we pride ourselves on using the most technically advanced equipment to achieve the highest quality finish on all our projects. Our shotblasting capabilities include the following.

  • The ability to shot blast components of up to 20 tonnes in weight.
  • The capacity to shot-blast up to a 216m³ components.

If a finer surface finish is required then it is also possible to blast the component with Aluminium Oxide 180-220 grit.

The shot blast booth at NiTEC, used for shotblasting and heat treatment, has a capacity of 216m3 and is made from stainless steel which minimises the particles that settle on the work. We also pride ourselves on our excellent customer service, our fast turnaround times, quality workmanship and competitive rates.

To find out more about about shotblasting and abrasive blast cleaning processes available at NiTEC, please visit the NiTEC website, call us on 0845 224 3571, or email us at info@nitec-enp.co.uk

FAQs for Electroless Nickel Plating, Shot Blasting & Heat Treatment

 

What is electroless nickel plating?

Electroless nickel plating is the process by which nickel or a nickel alloy is deposited onto a component. It is carried out without the use of an externally applied current, unlike electroplating. The nickel is deposited onto the component from the aqueous solution created by the chemical reaction.

What are the advantages of electroless nickel plating?

Corrosion resistance and corrosion protection

One of the most common reasons for the use of electroless nickel coatings in functional applications is its excellent corrosion resistance. In the very corrosive conditions encountered in drilling and producing oil wells, for example, electroless nickel has the ability to withstand the combination of corrosive chemicals and abrasion.

Wear resistance

With the appropriate heat treatment, electroless nickel plating can be hardened up to 950vhn. This makes it ideal for areas exposed to friction and wear.

Hardness

A great feature of electroless nickel plating is its hardness. Hardness values for electroless nickel deposits are in the range of 450-750 VHN, depending on the phosphorous content of the deposit.

Lubricity

Electroless nickel plating has natural self lubricating properties, which eliminates the need for liquid lubricants on components.

Solderability and bondability

Electroless nickel-phosphorus alloys are easily soldered with a highly active acid flux.

Uniformity of deposit regardless of geometries

Electroless nickel plating has a completely uniform coating. It’s a perfect solution for critical high-end engineering items including defence, healthcare, automotive and aerospace. Electroless nickel can be deposited to produce a wide range of coating thicknesses, with uniformity and minimum variation from point to point.

This uniformity can be maintained in plating both large and small parts and on components that are fairly complex, with recessed areas. Electroplating of such parts, on the other hand, would produce thickness variation and possible voids in the plating when coating holes and inside diameters.

Nonmagnetic properties of high-phosphorus nickel alloy

Electroless nickel deposits containing greater than 8 percent phosphorus are considered to be essentially nonmagnetic as plated.

How long will it take for my order to be completed?

As a specialist plating company our capacity and turnaround is fast and efficient. Depending on the size and scale of the order, our standard lead time is 5 days.

Where do NiTEC deliver to?

We frequently deliver throughout the UK, Europe and the world.

Can you provide a quote based on an email?

We are able to provide customers with comprehensive quotes based on drawings and photographs that have been emailed to us. We aim to respond to enquiries within 48 hours.

How hard is electroless nickel plating?

Electroless nickel deposits have hardness values in the range of 450 – 750 VHN, depending on the phosphorus content in the deposit. Generally, the higher the phosphorus content, the lower the as deposited hardness.

Heat treatment can be used to increase the hardness of electroless nickel coatings, achieving in excess of 1000 VHN. This makes the deposit hardness comparable to that of hard chrome, with the advantage of an even coating which will not require post plating machinery.

For more information about electroless nickel plating and more great reasons to choose nickel as your plating material, visit the NiTEC websitebecome a fan of our Facebook page, or why not follow us on Twitter?