ISO 9001 Registered
PH: 716.875.3380

What are thermal spray coatings?

February 6th, 2014
 Quick Links
Our Website

 HFW Services

 

 

 HVOF Robotic Pic Rev

Common

Thermal Spray Applications
Thermal spray coatings are used throughout many industries, from chemical, to power generation, to
steel production to semiconductor.
New applications are constantly developed.
Below lists general areas where thermal spray may be of
significant benefit…
~ Replacement of chrome plating using tungsten carbide thermal spray
~ Life cycle improvements where wear and corrosion lessen the life of your equipment

~ Restoration/ repair of old/ worn components or equipment.

Some common items repaired include…
  • Process Rolls
  • Shafts
  • Valve Components
  • Bearing Housings
  • Gear Boxes
  • Pump Components
  • Agitators
  • Printing Cylinders & Rolls
  • And many more…
HFW Industries, Inc.

ISO 9001:2008 Registered

196 Philadelphia Street

Buffalo, New York 14207-0008

Ph: 716.875.3380

Fx: 716.875.3385

E-mail: sales@hfwindustries.com

What is thermal spraying?
Basically, thermal spraying is when a coating material (in powder, rod or wire form) is heated to a designated temperature and then propelled in a molten state onto a substrate. The result is a mechanically bonded coating that will restore size or protect the substrate in the application.
It’s amazing that the thermal spray process, initially developed over 100 years ago in Switzerland by Max Ulrich Schoop, today uses technology that can spray coatings at supersonic speeds!
What separates HFW from our competition is our 60 years of expertise in thermal spray coating with complementary machining, finishing and assembly capabilities! 
This unique ‘One Source’ capability offers you high quality, timely manufacturing and repair service without the hassle of multiple vendors and blurred lines of responsibility.

 HVOF
How are thermal spray coatings applied?

HFW remains at the forefront of thermal spray technology by using state-of-the-art equipment, including robotics, with our 25 plus thermal spray systems.

The process chosen is based on what is best for each application. That may depend on the material to be sprayed, the substrate and the result desired. HFW has in-house laboratory facilities to qualify and test coatings to customer required specifications.

Thermal spray  processes we perform in-house include:

– High Velocity Oxy-Fuel or HVOF Coatings (pictured above)- dense metal/ carbide coatings

– Plasma Coatings- metal, ceramic and cermet coatings

– Sprayweld Coatings- metal alloys fused to the substrate

– Rokide Coatings- select ceramic coatings

– Metallize Coatings- metal coatings by wire or powder processes

 

HFW can apply any material that does not decompose as it is melted. These materials include pure metals, ceramics, cermets and polymers.

With over 60 years of proven success in extending equipment life, HFW will work with you to develop coatings specific to your application . We have been successful in designing coatings that have extended the life of equipment over ten-fold, savings millions of dollars for our customers! Ask us how our coating technology may be able help in your application!

Consider HFW Industries ‘One Source’ service in helping extend the life and reducing the cost of your application!

 

 

Is it possible to improve quality, save money AND reduce downtime by repairing instead of replacing equipment?

January 24th, 2014
Check out the following
“Quick Links”
for additional information 
  
  
 

 

Application Example

(Vacuum Pump)

 * After pump disassembly and cleaning our scope was as follows…

 * Shaft and Rotor Assembly- Machine drive, seal and packing sleeve diameters and machine to prepare cone fits of rotor for coating.  Thermal spray with Hastelloy C and finish.

 * Cones- Thermal spray with Hastelloy C and finish grind to assure proper fit with rotor.

* Heads- Pressure test, machine inboard face and pilot diameter for coating and thermal spray with Hastelloy C and finish.
* Assembly- Assemble complete including bearings, seals, gaskets and packing along with dynamic balancing and painting as required.
The results?
Life of the pump
increased from 9-18 months to 5 years!

Email:  Sales@hfwindustries.com
HFW Industries, Inc.
196 Philadelphia St.
Buffalo, N.Y. 14207
Ph: (716) 875-3380
Fx: (716) 875-3385
Simply… YES! 

How?

By extending equipment life with coatings that rebuild diameters and reduce future wear and corrosion, while having all the work performed under one roof.

HFW has the unique ability to combine thermal spray coatings and weld overlays with precision machining, precision finishing and assembly.

These capabilities give us the capacity to repair and manufacture parts beyond mend.

Typical repair applications include:
  • Centrifuges
    • Scrolls/ Bowls/ Heads

       

  • Pumps (Vacuum / Liquid)
    • Rotors/ Cases/ Various Components
  • Gearbox Covers
    • Repair worn bores
  • Bearing Housings
    • Thrust and Radial, plus Seal Housings
  • Mixers/ Agitators
    • Shafts/ Paddles/ Blades/ Complete Assemblies
  • Valves
    • Guides/ Bodies/ Stems
  • Compressors
    • Reciprocating- Cylinders/ Piston Rods/ Pistons
    • Turbo- Shafts/ Rotor Assemblies

Grinding-Power-Turbo Shaft2

For 65 years we have been partnering as an OEM’s service
arm and working with end-users who have
special engineered equipment.
Let us put our experience to work for you!

HVOF Thermal Spraying with Tungsten Carbide

January 17th, 2014
Quick Links
 
 
 
 
 
 
View our profile on LinkedIn
 

 

 

 WC/ Co/ Cr

Coating Properties

 * Microhardness:  

 1,000-1,350 DPH (300g)

  * Bond Strength (per ASTM C633):

 10,500+ PSI

 * Porosity:

 < 1%

  * Est. Max. Service Temp.:

 1,000 deg. F

 * Est. Surface Roughness as Sprayed:

 150-250 Ra

 * Possible Surface Roughness as Finished:

 1-5 Ra

 
 HFW Industries has been providing thermal spray coating solutions since 1947 and High Velocity Oxy-Fuel (HVOF) coatings for over 20 years.
 
 In addition to the HVOF process, HFW also applies thermal spray coatings using flame spray, electric arc metallizing and plasma spray processes. 
 
 During the 1980’s the HVOF process was developed to be an accessible market alternative to Union Carbide’s D (detonation) gun process.
 
 HVOF uses the internal combustion of fuel gases (ex: propylene, propane, hydrogen or kerosene with oxygen) to produce a hypersonic gas stream into which the coating material is fed. The powder is heated and propelled by the gas stream at hypersonic velocities against the workpiece where molten coating particles impact and form a homogenous coating structure.
 

 Tungsten Carbide/ Cobalt/ Chrome coatings can be used for abrasion and sliding wear resistance when some corrosion protection is required. Typical applications include piston/ compressor rods, sleeves, fan blades, mechanical seal faces, process rolls, and at times as a replacement for chrome plating.

Photomicrograph Image of 
Tungsten Carbide (86%) with Cobalt (10%) and Chromium (4%) using 
HFW’s HVOF Thermal Spray Process
  

86-10-4 WC-Co-Cr 

 HFW Industries offers ISO 9001:2008 registered services for manufacturing and repairing equipment used in demanding applications that can utilize our expertise in combining our coating technology with our precision machining, finishing and assembly capability. 
 
 We focus on One Source solutions that reduce costs, shorten lead times and eliminate hassles of working with multiple vendors.

 

 HFW Industries, Inc.

 (716) 875-3380

Send us an email

   

Can thermal spray improve your uptime and lower costs?

July 27th, 2011

   What are thermal spray coatings?

Can they help you increase equipment service life and save cost by salvaging worn parts?

 

   Common Thermal Spray ApplicationsThermal spray coatings are used throughout many industries, from chemical, to power generation, to steel production to semiconductor. New applications are constantly developed.

Below lists general areas where thermal spray may be of significant benefit…

 

~ Replacement of chrome plating using tungsten carbide thermal spray

~ Life cycle improvements where wear and corrosion lessen the life of your equipment??

 

~ Restoration/ repair of old/ worn components or equipment.

Some common items repaired include…

  • Process Rolls
  • Shafts
  • Valve Components
  • Bearing Housings
  • Gear Boxes
  • Pump Components
  • Agitators
  • Printing Cylinders & Rolls
  • And many more… 

 

 

HFW Industries, Inc.ISO 9001:2008 Registered196 Philadelphia StreetP.O. Box 8Buffalo, New York 14207-0008Ph: 716.875.3380Fx: 716.875.3385

E-mail: sales@hfwindustries.com 

 

 
What is thermal spraying?

Basically, thermal spraying is when a coating material (in powder, rod or wire form) is heated to a certain temperature and then propelled in a molten state onto a substrate. The result is a mechanically bonded coating that will restore size or protect the substrate in the application.

It’s amazing that the thermal spray process, initially developed over 100 years ago in Switzerland by Max Ulrich Schoop, today uses technology that can spray coatings at supersonic speeds!

What separates HFW from our competition is our 60 years of expertise in thermal spray coating with complementary machining, finishing and assembly capabilities! 

This unique ‘One Source’ capability offers you high quality, timely manufacturing and repair service without the hassle of multiple vendors and blurred lines of responsibility.

 

 
 
How are thermal spray coatings applied? HFW remains at the forefront of thermal spray technology by using state-of-the-art equipment, including robotics, with our 25 plus thermal spray systems.   The process chosen is based on what is best for each application. That may depend on the material to be sprayed, the substrate and the result desired. HFW has in-house laboratory facilities to qualify and test coatings to customer required specifications.   Thermal spray  processes we perform in-house include: 

  – High Velocity Oxy-Fuel or HVOF Coatings (pictured above)- dense metal/ carbide coatings 

  – Plasma Coatings- metal, ceramic and cermet coatings 

  – Sprayweld Coatings- metal alloys fused to the substrate 

  – Rokide Coatings- select ceramic coatings 

  – Metallize Coatings- metal coatings by wire or powder processes 

  HFW can apply any material that does not decompose as it is melted. These materials include pure metals, ceramics, cermets and polymers.  

  

 

With over 60 years of proven success in extending equipment life??, HFW will work with you to develop coatings specific to your application . We have been successful in designing coatings that have extended the life of equipment over ten-fold, savings millions of dollars for our customers! Ask us how our coating technology may be able help in your application!

Consider HFW Industries ‘One Source’ service in helping extend the life and reducing the cost of your application!

Sincerely,

Matt Watson, Vice President- mwatson@hfwindustries.com

Ron Jurewicz, Manufacturing Mgr.- rjurewicz@hfwindustries.com 

Mark Sherman, Sales Engineer- msherman@hfwindustries.com