Degassing and Flux Injection

Hydrogen gas can build up in molten aluminum and result in gas holes in the final casting and that is why degassing and flux injection is important. To remove this gas, a degassing unit is used to inject an inert gas to grab the hydrogen and bring it to the surface. This can be done with a graphite tube or rotating shaft. The rotating shaft is far more efficient. At the end of the shaft is a rotor to break the inert gas into very fine bubbles.

Molten aluminum oxidizes quickly. In order to remove these oxides, foundries use fluxes to grab the oxide and bring it to the surface. This can be done manually. However, flux injection is far more efficient. Often the flux is carried through the graphite degassing shaft to the bottom of the melting vessel. The flux and oxide are brought to the surface by the rising bubbles and can be skimmed off as ash.


Foundry Equipment

Carpenter Brothers Inc. partners with leading equipment manufacturers in the industry to provide you with the resources needed to make quality castings. From temperature measurement equipment to sand mixers and reclamation Carpenter Brothers has what you need.

Molding & Core Making

Everything you need to make molds and cores, as well as replacement parts for machines.

Casting & Shakeout

The necessary equipment needed to aid in casting and shakeout. 

Finishing & Surface Preparation

Equipment needed to put the finishing touches on your castings to get them ready to ship.  


Dust collection systems and air pollution control equipment to keep you in compliance. 

About Us

Carpenter Brothers, Inc. is the leading supplier of equipment, consumables, and technical expertise for the metal casting industry. Founded in 1917, by Everett and Milton Carpenter, the brothers were able to use their unique foundry experiences to solve the problem of the day: a reliable sand source.  They got their foot in the door by selling natural bonded molding sand, which was mined by hand, loaded into horse-drawn carts, and then delivered to customers.  Not only did they sell the sand, but their technical expertise was readily available for all customers, big or small, to help manufacture the best castings. After surviving The Great Depression, Carpenter Brothers, Inc. slowly increased the number of products it distributed and expanded its sales territory into what it is today.


Carpenter Brothers, Inc. has committed itself to its customer's success by providing exceptional service to go along with the superior products and equipment they supply.  With multiple warehouses around the United States we can get you the products you need when you need them. Our logistics team can handle getting your order to you by truck, plane, or train. Our technical sales and engineering staff all have experience in the industry, so when you buy from Carpenter Brothers you gain access to all of our knowledge.

Contact Us for a Quote

We are here to assist, give us a call or send us an email with your questions or quote request and we will be happy to help.