Who owns Harbison Walker?
Dresser Industries
In 1967, Dresser Industries, a subsidiary of energy giant Halliburton, acquired Harbison-Walker. By the late 1970s, victims began filing claims related to asbestos illnesses against Harbison-Walker and its parent companies.
Who was Harbison and Walker?
Harbison and Walker Refractories Company has been an innovative leader in both research and manufacturing of refractory materials throughout the history of the Company. They were the first refractory company to use and develop the continuous tunnel kiln in the United States for the burning of silica.
What does Harbison Walker make?
refractory products
A Global Refractory Leader
With more than 150 years of industry leadership, HarbisonWalker International (HWI) is the largest supplier of refractory products and services in North America.
What does a refractory do?
Refractories are ceramic materials designed to withstand the very high temperatures (in excess of 1,000°F [538°C]) encountered in modern manufacturing. More heat-resistant than metals, they are used to line the hot surfaces found inside many industrial processes.
What does Harbison Walker do?
We deliver one of the industry’s widest, deepest lines of refractory solutions. Our world-class refractory products perform to the highest degree. And by bringing intensity, reliability, and passion to work every day, we’re able to provide superior value to our customers and their businesses.
What does HarbisonWalker International do?
HarbisonWalker International (HWI) is the largest supplier of refractory products and services in the United States, and one of the largest in the world. The company employs nearly 2,000 people globally. Prior to renaming in 2015, HWI was ANH Refractories Company. Its family of companies included A.P.
What is refractory castable?
What are Refractory Castables? Refractory Castables are heat resistant building materials used in building large furnaces (kilns) in factories that specialize in cement, fertilizer, chemical, and petrochemical production.
What is the best refractory material?
Binary compounds such as tungsten carbide or boron nitride can be very refractory. Hafnium carbide is the most refractory binary compound known, with a melting point of 3890 °C. The ternary compound tantalum hafnium carbide has one of the highest melting points of all known compounds (4215 °C).
How many types of refractories are there?
Refractory comes in three common forms: molded, monolithic, and fiber.
What industry is HarbisonWalker International?
refractory products and services
HarbisonWalker International (HWI) is the largest supplier of refractory products and services in the United States, and one of the largest in the world. The company employs nearly 2,000 people globally. Prior to renaming in 2015, HWI was ANH Refractories Company. Its family of companies included A.P.
How many types of castable are there?
The over 400 different types of castables comprise insulating castables, dense castables, low cement castables, self flowing castables, etc.
What are three different types of refractories?
Depending on temperatures and service conditions of the applications such as boilers, furnaces, kilns, ovens etc, different types of refractories are used.
- Fireclay refractories.
- Silica brick.
- High alumina refractories.
- Magnesite refractories.
- Chromite refractories.
- Zirconia refractories.
What are super refractories?
Refractory is a material that will retain its shape and chemical identity when subjected to high temperatures and is used in applications that require extreme resistance to heat, such as furnace linings. Refractory products are basically used in industries for heat resistant and containment.
What is the meaning of castable?
able to be cast; suitable for casting
adjective. 1. able to be cast; suitable for casting. 2. (of an actor) able or likely to be selected to play a part in a play, film, etc.
What causes refractory failure?
When fiber modules fall from the roof of a kiln, the issue is often material, design or installation related. If the modules and support anchoring are missing, the most likely cause is an installation issue, insufficient stud welding, or excessive corrosion from the shell caused by sulphur or rust.
What is castable material?
Castable refractory products are non-metallic materials with physical and chemical properties that allow them to withstand high temperatures and retain their composition. Some of their common application is in furnaces, kilns and boilers.
Where does the word casting come from?
c. 1200, “to throw, throw violently, fling, hurl,” from a Scandinavian source akin to Old Norse kasta “to throw” (cognate with Swedish kasta, Danish kaste, North Frisian kastin), of uncertain origin. Meaning “to form in a mold” is late 15c. In the sense of “to throw” it replaced Old English.
When should I replace my refractory boiler?
It’s important to replace refractory when it starts to deteriorate. Issues with your boiler’s refractory may include cracking, difficulty with refractory doors, pressure vessel leaks, or damaged seal joints and holes. Any sign of damage or drops in performance may indicate that a refractory repair is in order.
What is Burner refractory?
The refractory around the burner head actually protects the flame from being cooled too rapidly (from heat transfer) along with creating the proper flame shape and velocity. Boiler refractory is heat-resistant material that lines the high-temperature areas of the furnace.
What is the density of castable?
Examples of Applications:
| Product | Maximum Service Temperature | Density (kg/m3) |
|---|---|---|
| 1700STD | 1700°C /3100°F | 2900 |
| 1700STD-GM | 1700°C /3100°F | 2750 |
What are the types of casting?
Different Types of Casting Process
- Sand Casting Process.
- Gravity Die Casting.
- Pressure Die Casting.
- Investment Casting.
- Plaster Casting.
- Centrifugal Casting.
- Lost-Foam Casting.
- Vacuum Casting.
What material is often used in casting?
Typical materials for permanent mold casting are cast iron, steel, bronze, graphite, and refractory metal alloys. Cores made of metal and sand are placed in the mold prior to casting to produce casting with internal castings.
What is boiler refractory made of?
Refractory can be made of a number of different materials but is commonly brick, tile, castables or gunning mixes. According to American Boiler Company, boiler refractory can be comprised of: “… compounds and minerals such as fireclays, bauxite, silicon carbide, zirconia, chromite, alumina, dolomite, or magnesite.”
What is refractory failure?
A refractory failure is the number one cause of boiler inefficiency and a major contributor to boiler shut-downs. Refractory that is properly selected and installed will always last longer, help minimize the amount of shutdowns required, and lead to savings in annual fuel cost.
What is use of refractory in boiler?
Boiler refractory is heat-resistant materials that are used to line the boiler to help it retain heat. This prevents thermal loss during boiler operation. It also helps the boiler retain heat even when it is not firing.