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In , Dr. Heraeus GmbH in Hanau, developed a process for melting metals in a vacuum. His aim was to replace precious metals such as platinum or rhodium, which were highly sought after on the world markets and correspondingly expensive - they could be melted in air - with cheaper non-precious metals such as chromium-nickel alloys. In , the 'process for vacuum melting and tempering of metals and alloys' was finally patented. The establishment of an independent company for the production of vacuum-melted non-precious metals was only a matter of time Wilhelm Rohn's pioneering idea on July 1, , when W. Heraeus GmbH decided to spin off its department for melting and processing non-precious metals, then employing 50 people under the direction of Dr. Rohn, as an independent company from the parent company. Heraeus-Vacuumschmelze AG was thus born. MUMETALL is used in components for electrical communications, radio receivers, but also for magnetic shielding, current sensors and current transformers. For the production of nickel-iron alloys, new production facilities were built with two special high-frequency smelting units, a strip rolling mill and the associated annealing shop, as well as a foil rolling facility. Despite the poor economic situation in Germany at the end of the s, research and development continued. In , the company already held 84 patents for Germany and foreign industrial property rights. The rebounding economy led to further expansion of production capacity in and As a result, the plant with its approximately employees covered a total area of 17, square meters in On October 5th, the company's founder Dr. Rohn died in a plane crash in Italy during a business trip. He was succeeded by Dr. At the end of the war, the plant was largely destroyed - though not by the will of the company management and workforce. Everyone joined in and, just eight weeks after the end of the war, a high-frequency melting furnace and a small hot rolling mill were put into operation. The soft magnetic special materials were among the essential components of many devices in modern electrical engineering and electronics. The effects of the economic miracle also made an impact on VAC. Due to the success of this new product group, the company's total sales almost doubled from around six to 11 million DM within one year.. In addition, new core shapes for the electrical industry came onto the market at the beginning of the s, the so-called cut cores. As early as , our researchers succeeded in developing and manufacturing cut cores from highly permeable materials. New techniques such as plastic impregnation or plastic bonding and ultra-fine grinding to avoid air gaps were introduced for the first time. These processes formed the basis for further developments. The most important areas of application for these materials were primarily instrument transformers for the electrical industry and miniature transformers. However, the production of special materials for the watch industry was also of great importance in the mids. Various springs for mechanical watches were produced, which were significantly more robust and corrosion-resistant than the steel springs used until then. Due to the high quality of these products, we supplied materials for more than 20 million watches per year during this period. In addition to cut cores and spring materials, the development of soft magnetic materials with rectangular hysteresis loops began in New products and the good order situation not only caused the number of employees to increase. The increase and modernization of production capacities was also driven forward. In the mids, for example, a new six-roll rolling mill for wide strip was put into operation, a decalcification plant, a new administration building and a factory building for core production were built, as well as the company's own factory kitchen. At the beginning of this decade, laminations and bonded laminations for components in the electrical industry were introduced to the world market with great success. This was an important step in the further refinement of VAC products forward integration - from strip to core to inductive component. A pioneering material at the end of the s was superconductors. These are various alloys that no longer exhibit electrical resistance when cooled below a certain temperature. The advantages of these superconducting materials are resistance-free and extensive current transport, since heat loss no longer occurs. Niobium-tin, niobium-zirconium and niobium-titanium compounds were of particular interest here. At that time, superconductors were mainly used to build electromagnets. Even today, superconducting power cables are used in medical technology for magnetic resonance tomographs to generate high magnetic fields. In , VAC received the first large order for 56 tons of a high-field superconductor. With the 70s, the great internationalization slowly took off. The product group called VACOMAX with its special magnetic properties enabled an increasingly wide range of applications from the automotive industry motors and generators to medical technology and sensors to switch and relay series as well as measuring instruments for electrical engineering. Furthermore, development work on other pioneering materials began in the s: In , the development of amorphous metals was started. The alloys in this group are amorphous, which means that they do not have a crystalline structure. The non-crystalline structure is achieved by 'freezing' the molten state of the alloy, by very rapid cooling 1 million degrees per second. VAC was awarded the contract for the construction of a magnetic shielding chamber for performing heart and brain examinations with new types of highly sensitive magnetic measuring instruments. Today, the headquarter is located in Elizabethtown, Kentucky. Today's factory site III in Hanau harbour was developed in The 32, square metre premises is the production facility for the rapid solidified alloys. The energy density of these permanent magnets was significantly increased, resulting in a considerable reduction in their volume and thus enabling them to be used in miniature components. We develop and manufacture metal strips with highly engineered properties for sensors and deactivation strips supplied to label manufacturers. This material is based on iron, silicon and boron with additions of niobium and copper. Thin strips are produced from this alloy using rapid solidification technology and then processed into toroidal strip wound cores. There, inductive components and cores are produced for all areas of application. In Slovakia, a subsidiary was founded in , where cores and components, parts and lamination packages as well as magnets and magnet assemblies are being manufactured. The acquisition of the Finnish magnet manufacturer Neorem in ensured further growth in the field of permanent magnets. This alloy belongs to the group of transition metal alloys with rare earths and is used to build environmentally friendly and energy-saving refrigeration units and heat pumps. These units are characterized by the fact that they do not require gaseous refrigerants. Together with the company Bender, an all-current sensitive differential current sensor was developed for fault current monitoring of charging stations and the associated charging cables. This sensor makes an important contribution to protecting people from fault currents by switching off the charging equipment in the event of a fault. Sustainability Products. English German Slovak. Company History. First foreign distribution. Extension of the VAC. New owner. Expansion of production capacities. End of an era. Reconstruction after the end of the war. Takeover of permanent magnet production. The development of cut cores. Spring alloys. Modernization and expansion. Laminations and core packages. Inductive components. First steps to non-European countries. Major order in the research sector. VAC expands nationally and internationally. Plant site III is built. Electronic article surveillance. New locations in Asia and Eastern Europe. New owner of VAC. Foundation of VAC China. Imprint Privacy Policy Contact.

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Follow along with the video below to see how to install our site as a web app on your home screen. Note: This feature may not be available in some browsers. Forums New posts Search forums. New posts. What's new New posts Latest activity. Log in Register. Search titles only. Search Advanced search…. Search forums. Log in. Install the app. For a better experience, please enable JavaScript in your browser before proceeding. You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser. Chemical IPA Suppliers. Prev 1 2. First Prev 2 of 2 Go to page. Parm Respect The Sound System. Messages 17, Location Towcester. Try the usual chemical suppliers, lab3 and sigma Aldrich are good, we use them at work. Messages 2, Location Barcelona. Messages 6, Location SW Scotland. Click to expand Messages 1, I buy mine from Shiny Hardware. They have their own website but also sell on ebay. Migmac Forum Supporter. Messages 8, Location Kintyre. Shox Dr said:. No good asking me, I think everything is too expensive. Messages 17, Location East Yorkshire. Migmac said:. What even bars and chains. Messages Location Bavaria, Germany. Out of interest what are you guys using the IPA for, i have some but only use it for de-greasing like a panel wipe. Majority of it goes on cleaning stuff ready to TIG. My metal is always dirty so needs grinding and cleaning off with IPA. I use it loads for getting shot of tar on my fingers from working outside. Anything really greasy it shifts great. Soap and water to remove the residue. Oh and setting fire to things. Of course. Maker Most folk just call me; Orange Joe. Messages 10, Location Don't ask questions. Parm said:. Maker said:. Isn't Sigma frightfully expensive and only sells to companys? I use Darrant Chemicals , prices are good Cheaper than eBay , postage is fast and reasonably priced. APC Pure are a bit more expensive but stock thousands more products so possibly worth considering if you later decide you need other chemicals. Messages 29, Location Scottish Highlands. It's not what you know, its who you know. You must log in or register to reply here.

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