Die Casting High Pressure, lubricants, release agents, plunger shot beads in the United States
ABOUT FOCHEM INTERNATIONAL
FOCHEM INTERNATIONAL offers a broad portfolio of customized released agents and special lubricants for the entire spectrum of the metal working industry, and many related applications.
We take great pride in our Research & Development. The chemical products are formulated in conjunction with specifically developed manufacturing technologies.
Fochem International has always persued a so-called “vertical diversification”, starting from crude raw materials to finished products. This policy gives us a certain degree of independence, and the products can be talior-made to suit the needs of our customers.
Fochem International has a state-of-the-art production facility, South of Johannesburg / South Africa. The individual processes are fully automatic in line with highest German standards. This explains why more than 70% of our production can be timely exported to over 20 countries.
Fochem International is DIN EN ISO 9001 and ISO 14001 certified.
TECHNOLOGY
Air Micronization of Soft Materials
Ultra Fine Milling Technology Today
The demand for finer and dry products has increased world- wide. Fine particles are so important for covering large surfaces with a thin layer of solids (e.g. coatings), and also for increasing dissolution rates (e.g. pharmaceuticals). This has led to the development of certain dry grinding processes to achieve submicron fineness. The new innovations that have being made are in the area of fluidized bed air jet milling. Best results with this process uses super heated steam with speeds of up to 1,200 m/sec as milling gas, and final fineness in the submicron range (example: D50 > 5.0 micron) can be reached.
New Bead Wet Mill Technology for the Processing of Micro Fine Graphite Dispersions
For the production of dispersions used in the coatings industry, small particle sizes of a specific shape are essential. The so-called “Bead Mills” are commonly used for the manufacture of such dispersions.Bead Mills are machines for the ultra fine grinding of solid particles in a liquid, mostly water, in the presence of small ceramic, glass- or metal beads.
New Technology for the Production of “Hydrophobic Emulsions”
For the past 40 years or so, so-called water-based release agents are in use for high pressure die-casting. Most of the products are based on colloidal aqueous wax dispersions, at times mixed with emulsified siloxanes. The manufacture of such products is fairly easy and follows standard types of procedures.
Fochem International’s Plunger Beads Technology
Originally the high pressure die-casting plunger beads had been invented in the USA some 20 years ago. This achievement was very promising as they replaced the messy graphite oils. Apart from that, the shot sleeve, especially in the case of automatic dosing, was better protected against the erosion caused by the hot aluminium smelt. For the application of the plunger beads a so-called “beads dispenser” is needed.