In order to properly seal casting porosity, parts must be clean and dry. The porosity must be free of any contaminants that might preclude the sealant from penetrating. If any residual contaminants are present, then the following problems may occur.
In order to properly seal casting porosity, parts must be clean and dry. The porosity must be free of any contaminants that might preclude the sealant from penetrating. If any residual contaminants are present, then the following problems may occur.
One of the largest aluminum casting facilities in United States produces engine blocks and transmission cases for an automotive OEM. This facility supplies the vast majority of powertrain castings in support of the OEM’s assembly operation throughout North America.
The definition of porosity is any void or hole in a casting. But this definition does not describe or give direction on the root cause of porosity. Casting porosity can be caused by gas formation or solidification shrinkage while the metal is a liquid. If a casting needs to be pressure tight, then the porosity can allow gas and fluids to seep from the part. In addition, the porosity can weaken the casting. In this blog, we will discuss the difference between gas and shrink porosity, and the best solution to seal porosity.
Schabmüller Automobiltechnik is a leading engineering, machining, and sub-assembly supplier to major automotive OEMs and Tier 1 suppliers. Founded in 1978, the company’s headquarters is in Großmehring Germany, and employs 850 people in four locations.
The most effective way to improve profits is to reduce costs. This means to remove waste from the process. Not only does waste affect profits, but it also affects delivery, quality and customer satisfaction. The 7 wastes in lean manufacturing are what Godfrey & Wing's vacuum impregnation equipment eliminates from the casting production process.
Manufacturing castings with the lost foam process enables the foundry to produce castings with many benefits and features not available in other casting processes. This casting process is advantageous for very complex castings that would regularly require cores. It is also dimensionally accurate, maintains an excellent surface finish, requires no draft, and has not parting lines so no flash is formed.
When it comes to choosing a vacuum impregnation sealant, there are two options: recoverable or recyclable. This blog defines these options, and explains some of the benefits of choosing Godfrey & Wing sealants.
Recent decades have seen an increase in the use of lightweight, high-performance aluminum castings in car manufacturing. Aluminum helps reduce the car's weight, increase gas mileage, and improve acceleration, braking and handling.
The Albert Handtmann Metallgusswerk GmbH is the largest lightweight (aluminum) foundry in Germany. The family-owned company has continually endeavored to improve its casting and machining processes to benefit its customers worldwide.
Sometimes to understand how something works it’s easiest to understand what it doesn’t do. Many companies call us and ask about vacuum impregnation. Although this process has been used for decades, many metal casters, machinists and engineers are not familiar with the process, how it works and how it can best be used to meet their needs and requirements. When thinking about vacuum impregnation of castings it’s important to remember three things that the process does not do: