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  AMST Twin Wire Arc Spray Systems
Posted by: Manju_AMST - 07-01-2021, 04:23 AM - Forum: Products and Services - No Replies

AMST introduces new series of Twin Wire Arc Spray system in 200 Amps, 300 Amps, 400 Amps and 600 Amps. The systems are available with choice of wire feed drive guns i.e pneumatic drive or DC drives with Robot integration. For more information of quote, please write to sales@alloymstech.com or marketing@alloymstech.com. 

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  Epoxy Sealants for Ceramic Chromium Oxide
Posted by: DMan - 06-27-2021, 11:39 AM - Forum: Surface Engineering Threads - No Replies

Dear All

Can anyone suggest a good Epoxy Sealant for Ceramic Chromium Oxide Coatings by Plasma Spray.
Any good reference will be helpful.
I have been using Diamant Dichtol but want some other alternatives to see if i get some other better options
Note : I have to grind/polish  the part after applying the sealant...

Warm Regards

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  Looking suggestion for S2B "Z" notch coating & dove tail ARC spray aluminium coating
Posted by: demionkrishan - 06-14-2021, 02:09 PM - Forum: Surface Engineering Threads - No Replies

Dear thermal spray family, 
Is anyone here, doing Gas turbine stage 2 bucket plasma "Z" notch and dovetail Arc spray aluminium coating?
 I am totally new to this subject and I feel personally, it is time consuming process to mask the whole area with plasma tape to coat a very small area. The time for masking per piece is on an average 15 minutes, is there any way to reduce time or any other methods? Appreciate your valuable feedback 🙏

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Posted by: joe plasma - 06-11-2021, 08:03 PM - Forum: Surface Engineering Threads - Replies (3)

Hello All,

Does anyone know what type of system is used for:

Type III
Powder: Plasma process for spraying materials in a powder form utilizing a non-transferable electric arc with nitrogen. Argon and Helium as a secondary gas with or without hydrogen.

Can I use a 9MC console with 9MB gun and 9MP powder feeder?

The type of powder to be sprayed will be 73F-NS-1.

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  Buy a plasma system
Posted by: kaizmoto1489 - 06-07-2021, 04:34 AM - Forum: Surface Engineering Threads - No Replies

Hello everyone,

I am going to buy one plasma system but not decide the model and brand yet.
I have considered 3 options:

1. 100HE from Progressive
2. Sinplex from Metco
3. KK gun from AMT

Base on my experience, 9MB is more stable than 100HE,but at that time the 100HE system is assembled with TAFA system and 100HE torch.
I am not sure if the original setup can help the plasma system more stable?

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  used 11MB gun for sale (24")
Posted by: KevGarty - 05-25-2021, 03:50 AM - Forum: Products and Services - Replies (2)

We have an 11MB (24") that is surplus to our needs. Gun was purchased for around $20k (AUD) for a project that sprayed a total of 6 jobs and hasn't been used since (2015)

Open to offers 

Located in Brisbane Australia. Contact for Photo's 


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  High Carbon Steel - Ammonia corrosion
Posted by: thorgrim - 05-23-2021, 01:10 AM - Forum: Surface Engineering Threads - Replies (1)

Greetings everyone, recently we have been repairing the Journal bearings of a twin screw Ammonia compressor .  The repair was done spraying the journals with an arc spray NiCr bond coat layer and as a rebuilding material we used a Sprasteel 80 Metco Wire (0.8% Carbon Steel,commercially known as High Carbon Steel) with a  high velocity wire flame spray gun.  The ground finished dimensions were perfectly in OEM tolerances and all the compressor working parameters were OK as oil Viscosity,working discharge pressure and temperatures,Screws RPM and everything else, but after some 8 hours of operation the bearings temperature begun to rise and the compressor was stopped and dismounted.  The Journals and the Babbitt bearings were completely worn out. As we have repaired a lot of Journal bearings in turbines,electrical motors,crankshafts and a lot of other rotary mechanical equipments, all working in lubricated hydrodynamics Journals and we never have found any kind of problems with the job, we guess if in this twin screw compressor, working with Ammonia gas the High Carbon Steel sprayed coating could have suffered a chemical attach corrosion trouble and the repaired journals are being damaged for this reason.  Could some one please help with this issue_?  Thanks

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  Crank-tap HVOF - spray.
Posted by: GeorgeStevens - 05-07-2021, 06:49 AM - Forum: Surface Engineering Threads - Replies (1)

Does anyone here already have experience or knows more about the well-known High Velocity Oxygen process for spraying parts.
I am a Flandria freak (may not belong here, but yes) and I sometimes have problems with run-in crank taps at the level of the bearing on the flywheel side.
I have had many original new old stock parts but the crankshaft department for certain types of engine blocks is running out.
Can this be a good solid alternative to save the original crankshaft to original sizes / bearing.
Near me there is a company called LMS in Elsloo.
Another option is to turn / grind the crank tap 1mm to an undersized bearing (there is and also the seal), but then the hardness is gone and the crank tap weaker of course.
I think the crank tap is only surface hardened.
Or is there another option, please get a response from the crankshaft specialists here on the forem.

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  Green flame in HVOF hydrogen - oxygen combustion
Posted by: JeroenB - 04-29-2021, 03:19 PM - Forum: Surface Engineering Threads - Replies (3)


We have a HVOF installation fueled by hydrogen and oxygen. Normally our flame is almost invisible but sometimes it turns green. We have narrowed down the origin from the hydrogen gas, when changing a hydrogen pack the flame can suddenly turn green. In the past we always rejected these shipments of hydrogen but it has become more frequent since we switched from hydrogen supplier. Our accuraspray camera measures no change in particle speed or temperature with a green or invisible flame. 

My current suspects are:
1. Impurities in the hydrogen weaken the copper somehow and it is burned, turning the flame green
2. Impurities in the hydrogen gas itself turn green when burned

Do others have similar issues? Do you have other ideas what it might be? I'm not sure if I should be worried about the green color.

Best regards,

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  Combination of aluminum and stainless steel
Posted by: davehetfield - 04-20-2021, 12:13 PM - Forum: Surface Engineering Threads - Replies (2)

The Shark Apex Uplight Lift-Away Duoclean - The special Features


We are sure that these shark apex uplight lift-away duoclean vacuums will satisfy most of your requirements if you are looking for a cheap, lightweight stick vacuum with excellent performance.

For a long time, Shark's reputation and sales numbers were dominated by its famous upright vacuums, such as the Shark Navigator and Rotator.

Let's look at why these lightweight stick vacuums have become one of the most common and high-rated stick vacuums on the market today.

Special Features

This UpLight vacuum cleaner combines the best of both worlds, providing the powerful suction of upright vacuums with the flexibility of a stick machine. The following are the primary characteristics that distinguish this new model as an excellent option for your house.

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Powerful Cleaning

The manufacturers have created An airflow of 66 CFM for the Shark apex uplight corded lift away. It has two innovations for high suction: the streamlined channels, which increase airflow speed, and the digital high-spin motor.

The increased flow of air is referred to as Hyper-Velocity suction by the manufacturer. With this feature, the vacuum can clean nearly any surface in your house, including eliminating dirt from various kinds of carpets.

HEPA Filter And Anti-Allergen System

This vacuum provides excellent protection against allergies and other contaminants. It is a completely sealed device, which prevents particles from escaping once the cleaning head has cleaned them up.

The HEPA filtration system and a dust cup that opens downward complete the allergy protection configuration. These precautions will prevent allergens from getting into your house and are safe for people who are sensitive to particles such as dirt and other allergens.

DuoClean Technology

In recent years, this function has become highly popular, and you can find it on many Shark vacuums. A soft roller brush is added to the front of the cleaner head due to this technology. As a result, there are two brushes on the cleaner head.

The extra soft roller brush can pick up bigger dirt more efficiently, and it also performs a fantastic job on bare floors when used in conjunction with the vacuum.

Long Reach And Lift-Away Technology

A removable pod is included with the vacuum. The extended, built-in hose on the lift-away is one of the many features that will amaze you about it.

When completely extended, the hose has a reach of 4 feet 2, allowing you to clean various surfaces such as staircases, vehicle interiors, sofas, and other comparable areas with relative ease.

You may also use the vacuum's wand to increase the reach of the suction, which is very useful for cleaning high areas. The lift-away vacuum cleaner comes with everything you need to vacuum, including a strong suction and a dustbin.

The ability to attach various attachments increases its flexibility, enabling you to clean delicate and difficult-to-reach areas with ease.

Zero-M Technology

We have a few Shark vacuums with Zero-M Technology, and they all perform an excellent job of cleaning the brush roll.

The technology is based on a customized brushroll that prevents hair from wrapping around it too tightly. It also features a comb-like device that combs the hair out of the brushroll and delivers it to the dust canister for disposal.

However, you should note that it may become tangled if your brush roll contains a lot of pet hair.

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Dust Canister

The dust container may be easily removed and emptied. It is, however, on the small side, with a capacity of just 0.68 quarts. As a result, a more giant canister would be expected to reduce the frequency of cleaning.


To summarize, we would suggest the Shark apex uplight lift-away duoclean vacuum for a variety of reasons: its strong suction, two brush rolls, lift-way design, and flexible attachments, the vacuum can clean any area of your house.

Except for the relatively tiny dustbin, this new vacuum meets the cleaning needs of most households. Last but not least, it is reasonably priced.

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