Demag on ajalooline suuri mäemasinaid tootnud firma. Hiljem on see tootnud mitmeid teisi masinaid. Demagi hüdrauliliste ekskavaatorite tööstuse võttis üle Komatsu.
Demag
From Wikipedia, the free encyclopedia
 | |
| Industry | Engineering and service |
|---|---|
| Founded | 1910 |
| Headquarters | Düsseldorf, Germany |
| Products | bridge cranes, hoists, material handling equipment, gantry cranes and port technology. |
| Employees | 5,893 reported 5/4/11 |
| Website | www.demagcranes-ag.de |
Demag or Demag Cranes AG is a German heavy equipment manufacturer now controlled by US based Terex. The roots of Demag date back prior to its formation, but became Märkische Maschinenbau-Anstalt, Ludwig A.-G in 1906 as the biggest crane building company in Germany employing 250-300 people. The company was a manufacturer of industrial cranes that included types like, bridge cranes, hoist (device), overhead cranes, Gantry crane to name a few. In 1910 came the hour of the Deutsche Maschinenfabrik in Duisburg – known worldwide by its telegram abbreviation Demag (now Demag Cranes & Components GmBH).[1] In 1973 The Mannesmann group assumed ownership of Demag. Since that time the company has continued to grow and change. Parts of the company under core business structuring moved from its ownership to focus the main concept of the company.
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Founding
The Demag company was formed in Duisburg through the union of Märkischer Maschinenbau-Anstalt L. Stuckenholz AG, Duisburg Mechanical Engineering AG, and the Benrath Machine Works GmbH. In 1910, they designed what was then the world's largest floating crane, built for Harland & Wolff in Belfast, which would be used for the building of the passenger liners RMS Olympic and RMS Titanic.[2]
Starting in 1925, Demag also manufactured excavators. They expanded to manufacture locomotives and railroad cars. During the Second World War, armoured fighting vehicles (in particular Bergepanther) were built in the Berlin Staaken plant.
During the buildup to, and during World War II, Demag-designed halftrack military vehicles, such as the armored Sd.Kfz. 250, played an important role during the war, with just over 6,600 built by Demag and their subcontractors.
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Hydraulic era
In 1954, Demag developed their first hydraulic excavators. Demag would soon expand into construction machines, vehicle cranes, moving and conveying engineering (workshop crane and control devices), steel mill technology (complete metallurgical plants, in particular continuous casting equipment), compressors, and compressed air engineering. The company also became a world leader in the manufacturing of injection moulding machines.
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As part of the Mannesmann group
In 1973 the ownership of Demag was assumed by the Mannesmann group, based in Düsseldorf. In 1983 Mannesmann-Demag AG and Wean United, Inc. of Pittsburgh, USA, founded a daughter company to produce steel working equipment, Mannesmann Demag Wean Co.
A joint venture with the Japanese manufacturer Komatsu led to spinning off of the large-scale excavation operations and their renaming as Komatsu Mining.
The steel and rolling mill technology division, based in Duisburg, was spun off to Schloemann-Siemag (SMS) and continues today under the name SMS Demag.
The compressor division was sold in 1996 to CompAir, which was then part of the British Siebe/Invensys group, but has since become an independent company.
Later (1999), the injection moulding manufacturing was merged with that of Krauss-Maffei, which had itself been acquired by Mannesmann from 1989, to form Mannesmann Demag Krauss Maffei and formed part of Mannesmann Atecs (for Advanced Technologies), a holding company for all of Mannesmann's non-telecom activities. Krauss Maffei's general equipment manufacturing and defence portions later passed to Linke/Hoffmann/Busch. The holding company was later named Mannesmann Plastics Machinery or MPM, with primary divisions Demag Plastics and Krauss-Maffei.
In the autumn of 2001, Siemens divested by far the majority of these to Kohlberg Kravis Roberts (KKR). At this same time the world economy was going through another recession, entailing downsizing and the reduction of jobs. Those that remained were restructured and became part of the new company focus for future growth.
Demag Cranes and Components was one of the non-core divisions carved out from Siemens and acquired by KKR. KKR initiated a major reorganization of the Demag Crane and Components organization, including a refocused effort of their product lines. The production and general company focus changed to Overhead cranes, hoist's, Gantry cranes, and Portal cranes under the name Gottwald. Parts of the conveying engineering activities remained with Siemens under the name Dematic. The remainder of the conveying engineering firm was sold in 2006 as Demag Cranes AG, together with the quay crane manufacturer. Demag Cranes was listed publicly in 2006, and has since increased its market share both in the US and worldwide. MPM was also sold to KKR and is now part of Sumitomo Heavy Industries
In August 2002, the Demag crane plant in Zweibrücken became part of the US Terex company. The brand name Terex-Demag continues. In 2011 the BBC Television programme How to Build A Super Jumbo Wing showed Demag equipment at Broughton, Flintshire, Wales, UK, lifting the largest wing ever produced for a civil airliner, 17.7 metres from front to back and 36.3 metres from fuselage to wingtip. This is fitted to the Airbus A380, the world's biggest passenger aircraft.
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Notable dates.
- 1819 The present-day Demag Cranes & Components GmbH founded under the name Mechanische Werkstätten Harkort & Co. in Wetter an der Ruhr. First Steam powered[1] crane produced by Ludwig Stuckenholz company. Now Demag Cranes & Components GmbH.
- 1840: Demag Cranes & Components starts full production of Overhead cranes in Germany.
- 1906 The present-day Gottwald Port Technology GmbH founded under the name of Maschinenfabrik Ernst Halbach AG in Düsseldorf
- 1910 Successor companies to Mechanische Werkstätten Harkort & Co. become part of Deutsche Maschinenfabrik AG (Demag: Demag starts production of Electric motor hoist.
- 1956 Leo Gottwald KG builds the first mobile harbor crane
- 1969: Demag introduces the first AC motor with a sliding rotor on its crane product in the USA.
- 1988 Mannesmann takes over Leo Gottwald KG and integrates it in Mannesmann Demag AG
- 1992 Restructuring of the Mannesmann Demag Group and spin-off of Mannesmann Demag Fördertechnik AG in Wetter
- 1996 Mannesmann Demag Fördertechnik AG takes over the Mobile Cranes segment from Mannesmann Demag AG in Duisburg.
- 1997 Mannesmann Demag Fördertechnik AG is renamed Mannesmann Dematic AG
- 2000 Mannesmann Dematic becomes an integral part of the Atecs Mannesmann AG Group; spin-off of Demag Cranes & Components GmbH (Wetter); Mannesmann taken over by Vodafone; Siemens AG and Robert Bosch GmbH acquire Atecs Mannesmann; the mechanical engineering division of Atecs Mannesmann AG, to which the current segments of Demag Cranes belonged, remains in the Siemens Group
- 2002 Demag Cranes & Components GmbH and Gottwald Port Technology GmbH taken over by Demag Holding S.à r.l (Luxembourg), in which private equity investment funds advised by KKR hold an 81% interest and Siemens AG holds 19% interest
- 2005: Demag Crane & Components Corp. produces the first "Smart hoist" with self-diagnostic capability.
- 2006 Consolidation of Demag Cranes & Components GmbH and Gottwald Port Technology GmbH under the umbrella of Demag Cranes AG and IPO and 23 June 2006.
Withdrawal of Demag Holding S.à.r.l..
- 2010: Demag becomes the first company to receive the industry certification by HMI.
- June 30th 2011: Terex gains 67% of Demag Cranes.
References [1]
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Gallery
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References
- ^ a b c Kurrer, Karl-Eugen (2008). The history of the theory of structures: from arch analysis to computational mechanics. Berlin: Ernst & Sohn. pp. 429–430. ISBN 3-433-01838-3.
- ^ http://www.preservedtanks.com/Locations.aspx?LocationCategoryId=1155
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External links
 | Wikimedia Commons has media related to: Demag |
- Demag Cranes & Components Corp. USA
- Demag Cranes AG (German)
- Demag Cranes & Components Corp. germany
- Gottwald Port Technology
Demag
Demag is a German manufacturer of heavy equipment. The company is made up of several divisions, including crane and port technology, crane manufacturing, injection molding machines, and automated material handling equipment.
Demag manufactures cranes through Demag Cranes & Components in 16 countries but is represented in more than 100 countries through various subsidiaries and services.
As of the end of the 2006/2007 financial year, the Demag Group comprised about 5,813 employees and had generated sales of approximately EUR 1.1 billion.[1]
Contents[hide] |
[edit]History
Demag Cranes & Components GmbH was founded in 1819 under the name Mechanische Werkstatten Harkort & Co. in Wetter an de Ruhr in Germany. The onset of the Industrial Revolution was crucial to the success of the company and in influencing its production of steam engines, steel works, and rolling mills. The growing need for mechanization led them to become the first crane manufacturing company in Germany, and their market was focused largely on marine transport and manufacturing for industrial and trading purposes.
[edit]Gottwald’s History and Eventual Inclusion in the Demag Group
In 1906, another company was formed that would play a huge significance in the future of Demag. Gottwald Port Technology GmbH was formed in Dusseldorf, Germany, but was then known as Mmaschinenfabrik Ernst Halbach AG.
Leo Gottwald KG built the first mobile harbor crane in 1956.[2] Previously, cranes had to be taken apart in order to be brought from one location to the next, or they had to be hauled by a larger and more powerful piece of machinery, which would increase the project costs. When cranes became mobile, this was no longer an issue. Although not associated with Demag until 1988 when Mannesmann acquired it and incorporated into Mannesmann Demag AG, Leo Gottwald KG provided Demag with historical knowledge crucial to expansion.
[edit]Early Acquisitions and Mergers
In 1910, several companies joined together to form the present day Demag Group. These included Marki Engineering Co., Duisburger Mechanical Engineering AG, the Benrather Engine Works GmbH, as well as Meschanische Werkstatten Harkort & Co. The result was Deutsch Maschinenfabrik AG Co. (Demag). The merging of so many engineering and mechanical manufacturing companies gave Demag a boost to thrive in the equipment manufacturing industry—so much so that production expanded to cranehoists and electric motors. [3]
[edit]World's Largest Floating Crane
One of the most infamous cranes to come from this union was the largest floating crane in the world, produced for a company called Harland & Wolff. Harland & Wolff used the crane for the construction of passenger liners on the RMS Olympic an RMS Titanic. [4]
[edit]Expansion: More Equipment, More Plants, and More Technology
The Demag Group began producing a wider range of machinery, including excavators, locomotives, and railroad cars in 1925. As with many manufacturers during the Second World War, Demag expanded, formed the Demag Zug GmbH in 1939, and prepared for the war. It produced a range of machinery specifically for the army, including an armored fighting vehicle. [5]
The Bad Bergzabern plant, constructed in 1961, was used to manufacture more machine components, including electric chain hoists and other electrical crane components.
By 1954, Demag was not only producing excavators, but hydraulic excavators, as well as a line of other machinery, including vehicle cranes. It became one of the three major German companies, along with Liebherr and O&K, to produce and manufacture giant mining excavators. However, Komatsu acquired this division when it took over in 1997.[6] It also started producing compressors for its engineering unit.
In addition to expanding its machinery line, Demag also integrated up-to-date technology and services, such as a conveying engineering workshop, and the implementation of steel mill technology for continuous casting installations.
Demag, comprising several companies crossing over several industries, was also one of the biggest manufacturers of injection molding machines; however, this was later acquired by Mannesmann Co. in Germany.
[edit]Mannesmann Restructuring in the 90s
The 1990s were characterized by a restructuring of the Mannesmann Demag Group. In 1992, it was reconfigured and another company, Mannesmann Demag Fordertechnik AG, with a base in Wetter, Germany, was created out of the mix. This new company within the Demag Group took over the mobile cranes division from Mannesmann Demag AG in 1996 and was renamed Mannesmann Dematic AG a year later.
Also in 1996, Demag completed an engineering project that Komatsu was also engaged in. After the venture was completed and the new rolling technology produced, Vodafone got involved with the company, specifically with a division of the metallurgical plants and rolling mills segment of the group. This was taken over by SMS and subsequently renamed as SMS Demag in 1999.
[edit]The 21st Century
In 2000, Mannesman Dematic became a part of the Atecs Mannesman AG Group. At the same time, the Demag Cranes & Components GmbH division of the Demag Group was formed.
Several acquisitions took place in this 2000: Vodafone acquired Mannesmann and Siemens AG, and Robert Bosch GmbH purchased Atecs Mannesmann. The latter acquisition, however, saw the division of Atecs Mannesman AG, which operated the Demag Cranes segment, belonging under the Siemens Group.
In just two short years, Demag Holdings acquired Demag Cranes & Components and Gottwald Port Technology. The combination of the group meant that private equity investment funds, which were primarily held by KKR, amounted to 81 percent interest, and 19 percent accounted for Siemens AG invested interest. This led to a massive downsizing of the company and more than 1,000 jobs were lost—a situation that became known as the "locust" debate.
As Siemens gave up the Demag Cranes & Components segment of the Demag Group, it was acquired by KKR, who restructured the group and its product lines.
In 2006, both Demag Cranes & Components and Gottwald Port Technology were consolidated under one company, Demag Cranes AG. [7]
[edit]The Company Today
Today, Demag Cranes AG supplies industrial cranes, harbor cranes, crane components, and port automation technology. As a part of its services division, Demag offers maintenance and refurbishment of the machines and parts it manufactures.
Demag manufactures a variety of cranes, including single and double-gird cranes with capacities up to 150 tons and reaching heights of 140 feet (43 m). It also produces suspension cranes capable of loading up to 7,000 pounds (3,175 kg) of materials, as well as cranes that are supplied to the U.S Air Force, Navy, and Coast Guard, and organizations such as American Airlines and USX. Another type of crane is the overhead crane, for which there is a large enough demand to account for 1/3 of Demag's crane production sales.
The components selection consists of hoists with capacities of up to 100 tons, output gear reducers, brake motors with signature conical rotor and stator designs, winch units, wheel blocks, DC chain hoists, DR wire ropes, and more.
Today, the Demag Group makes up several segments, including:
- Demag Cranes AG – crane and port technology
- Demag Cranes – crane manufacturing
- SMS Demag – steel mill and rolling technology
- Demag – Terex Demag mobile cranes
- DPG – injection molding machines
- Dematic – automated material handling equipment
[edit]Equipment List
[edit]References
- ↑ Homepage. Demag Cranes. 2008-09-30.
- ↑ History. Demag Cranes. 2008-09-30.
- ↑ History. Demag Cranes. 2008-09-30.
- ↑ Demag. Nationmaster. 2008-09-30.
- ↑ Demag. Nationmaster. 2008-09-30.
- ↑ Haddock, Keith. Earthmother Encyclopedia. Motorbooks: St. Paul’s, 2002.
- ↑ History. Demag Cranes. 2008-09-30.
