Work with us
Interesting Fact: Large-scale boronizing was first applied to drive gears for petrol-driving engines in 1979. Meanwhile, similar helical gear pairs have long since become standard fittings in vehicle and stationary engines.
On account of its outstanding abrasion resistance, boride layers are used to reduce abrasive and adhesive wear.
Boronizing is most frequently adopted for steels and nickel alloys. Attainable layer thicknesses vary according to material and application. There is a large number of possible applications for boronizing in mechanical, equipment and apparatus engineering.
Boronizing or “BorCote™” is a thermochemical surface hardening process in which boron atoms diffuse into a metal surface to form hard boride layers. These very hard borides have been proven to be excellent for protection against wear.
BorCote™ is our proprietary process that utilizes a proven patented chemical that transforms the surface structure of the steel into one that resists ABRASION, CORROSION, and EROSION. Our process can be applied to complex parts with unorthodox geometries and will maintain uniform layer thickness. This new surface will not flake or peel and is impact resistant.
The process is carried out by preparing the part accordingly, packing it in a container suitable to size of the part, then filling the container with the boron powder. The parts are then exposed to temperatures ranging from 800 to 1050˚C and takes from one to several hours. The temperature and time required depend on the material to be boronized and on the desired thickness of the boride layer.
Existing conditions or requirements may necessitate heat treatment either before or after boronizing or both.
Heat treatment either before boronizing takes the form of:
And after Boronizing, of:
Most steels of the construction, case-hardened, tempered, tool-making and chemically-resistant types lend themselves to boronizing. Various steels such as:
Other suitable materials are Aromco iron, cast iron, sintered iron and steels.
Hard metals are readily boronized, particularly the sintered types based on WC-TiC with C or Ni as a binder.
Boronized steels are extremely resistant to abrasion on account of their great hardness, commonly exceeding 80+ or higher Rockwell ‘C’ hardness and will not flake or peel and is impact resistant. Boride layer thicknesses vary with application and increase service life by several-fold. Some examples requiring protection from abrasive wear include pneumatic transport systems, plasticating units in plastics processing and parts for mills, pumps and valves.
The clear superiority of boride layers, particularly at high temperatures, over other coatings such as Gas Nitride and Salt-bath nitro-carburide are well documented.
The good wear properties of boride layers and the use of less lubricant or none at all, will become ever more important in the future, since developments are heading in the direction of severe curtailment of lubricant use in order to protect the environment.
This process can be applied on complex parts with unorthodox geometries or areas beyond line of sight and will maintain uniform growth. Consider this coating for:
Some examples of other applications include the service life of boronizing grinding disks for commercial coffee roasting plants is five times as great as that of non-boronized disks. Chain links for conveyor equipment in silo towers are forged parts. Complete transport chains are currently being tested in boronized form. The results for abrasion and for corrosion are much better than those for non-boronized chains. Casting tubes in continuous casting equipment for zinc, last more than 15 times longer when boronized. Good results have been achieved by a construction that facilitates boronizing. Boronizing effectively protects balls for ball valves against abrasive wear. These types of boronized valves are used in equipment for transporting gases or liquids with a high solid-abrasive content, such as in off-gas scrubbing and in the petroleum industry.
Silver Fox has the capability of boronizing parts up to 6’ in length with various diameters and offers two versions of this process.
On account of their outstanding abrasion resistance, boride layers are used to reduce abrasive and adhesive wear. Boronizing is most frequently adopted for steels and nickel alloys. Attainable layer thicknesses vary according to material and application. There are a large number of possible applications for boronizing in mechanical, equipment and apparatus engineering.
Independent Test, 4140 (PDF)
To view additional technical information or specification, please login. If you don’t have an account, please contact us.
No Product Catalog to show
BorCote™ is our proprietary process that transforms ordinary steels into industry leading performance steels. Our process utilizes a proven patented chemical that modifies the existing surface of the steel to one that resists abrasion, corrosion, and erosion, extending product life up to 10x that of normal product life. This new surface will not flake or peel, and is impact resistant. It can be applied to various steels such as:
Our BorCote™ process can be applied on complex parts with unorthodox geometries, or areas beyond line of sight such as Electric Submersible Pump impellers and diffusers. Where some other coatings can not be applied BorCote™ has you covered.
BorCote™ can be applied to various steels such as:
Our BorCote™ process utilizes a proven patented chemical that modifies the existing surface of the steel to one that resists abrasion, corrosion, and erosion, extending product life up to 10x that of normal product life.
When you need downhole tools or tool coatings for an oilfield completion project, contact us. You’ll love the quality, expertise and fast turnaround we offer.