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  • Gräbener Maschinentechnik: New floor-mounted longitudinal seam milling machine surpasses all expectations
    of offshore wind towers The production sites of such companies are usually located on the waterfront thus profiting from an advantageous infrastructure However the sandy underground of such sites is a disadvantage Thus the demand for a floor mounted long seam milling machine which does not require an expensive foundation was obvious As a consequence the new machine concept has a milling unit which is tilted by 45 degrees This milling position allows an erection of the machine on the bare shop floor By the way some applications still require the traditional version where the machine is installed in a foundation and where the milling unit operates in a 6 o clock position In case of the floor mounted longitudinal seam milling machine the workpieces pipes etc with external diameters of 2 000 mm to 8 000 mm and lengths of up to 4 000 mm are placed aligned and clamped on a pipe support with an adjustable pipe turning device For a better monitoring a camera which displays the milling process up to a depth of 90 mm on a screen in the operating area is installed at the support In addition to this the machine is equipped with a milling height adjustment for an automatic height copying in order to maintain a constant milling depth during the milling operation The results surpassed all expectations The smooth running of the machine the quality of the seams milled and the service life of the milling tool are such impressive features that a highly satisfied customer has already ordered a second floor mounted long seam milling machine from GMT Therefore GMT is certain that the market will accept the new machine type as readily as it has accepted the traditional long and circ seam milling machines It is not surprising that

    Original URL path: http://www.graebener-maschinentechnik.de/News.gmt-news-artikel+M5f207db012d.0.html (2016-02-16)
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  • Gräbener Maschinentechnik: Kleinknecht turns machine builder in the sector of roll texturing
    Hauck Managing Director of Kleinknecht securing this order is of immense importance in terms of market strategy Even more so since the contracting partner HOCO RST is a joint venture of the Indian Tata Steel Group one of the world s largest steel groups and the Canadian Court Holding Court Holding is the world s largest operator of roll texturing machines applying the EDT process For 40 years Kleinknecht has been active on the market of electrical discharge machining and so far has equipped more than 60 EDT machines worldwide with electric controls and generator technology says Christoph Hauck underscoring the impressive and vast track record of the Kleinknecht EDT business The next logical step after having supplied the centerpiece the generator technology for decades according to Hauck is the manufacturing of the complete machine With their innovative concept Kleinknecht currently receives extremely positive feedback from the market This new concept eliminates all known weaknesses of competitor machines Kleinknecht a member of the Graebener Group is the first company worldwide to use linear motors for the control of the electrodes in high end EDT machines Speaking of the Graebener Group naturally the control and electronic specialists of Kleinknecht benefit from the synergy effects of the Graebener Group which consists of seven companies For instance know how and competence for the construction of the mechanical parts of the EDT machines can also be found within the Graebener Group For us securing this order is an endorsement of our efforts to market our know how in the sector of roll texturing explains Christoph Hauck However the company is already reaching out for new goals Hauck says with a smile Further projects are in preparation Keyword EDT EDT or electrical discharge texturing is a process that discharges several thousand pulses per second onto

    Original URL path: http://www.graebener-maschinentechnik.de/News.gmt-news-artikel+M587310e72da.0.html (2016-02-16)
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  • Gräbener Maschinentechnik: Secretary Remmel meets conservative yet revolutionary engineering pioneers
    in this sector According to the Secretary this in turn is the best possible condition in order to rise to this new challenge together a long term and determined transformation of our industry especially the energy industry into an efficient climate protection industry with high employment rate Especially medium sized machine builders have recognized this potential at an early stage and set the right course Secretary Remmel praises Medium sized technological leaders such as Gräbener have long since exploited this growth potential Gräbener is sure of the market Sustainable Energies This is also reflected in the manufacturing of machines for the construction of offshore wind towers Machines designed and installed by Gräbener are used for the construction of wind towers with various lengths and diameters of several meters For this purpose Gräbener supplies plate edge milling machines 3 and 4 roll bending machines as well as longitudinal and circumferential seam milling machines The smooth and flawless weld seam preparation provided by these long and circ seam milling machines contributes to the reduction of costs per meter weld seam by more than 50 which among other things is achieved by reducing the time necessary for the energy intensive welding processes The Secretary was albeit even more impressed by the fact that Gräbener Maschinentechnik has persistently been working the fuel cell sector since 2003 In 2005 already the Netphen based company made a vast contribution to the industrial series production of fuel cells by developing a machine called PowerBoxx used in the production of metal separator plates for fuel cells This development was supported by NRW with 840 000 Euro Network Fuel Cell and Hydrogen The separator plate is a core component of the fuel cell Utilizing high water pressure on the basis of the hydroforming process Gräbener Maschinentechnik has developed a fast and cost efficient process to manufacture separator plates made of thin high strength metal Due to this development the production costs of this important fuel cell component could be reduced significantly explains Dr Andreas Ziolek Director of the Network Fuel Cell and Hydrogen of the EnergieAgentur NRW energy agency of North Rhine Westphalia Gräbener is a member of the network and supplies fuel cell manufacturers worldwide Certificate of Government Funding handed over The continuous efforts of the company Gräbener to further advance research and development in the fuel cell sector were one of the reasons that Secretary Remmel did not come to Netphen empty handed He duly handed over a certificate of government funding for the project BREEZE The aim of the project is the development of a fuel cell based Range Extender for battery driven vehicles By continuously re charging the battery range extenders can increase the range of battery driven vehicles to that of up to 500 km Today s vehicle concepts use combustion engines in connection with a generator This of course generates airborne pollutants and noise which partially negates the advantages of battery driven vehicles A hydrogen powered fuel cell which generates next to no

    Original URL path: http://www.graebener-maschinentechnik.de/News.gmt-news-artikel+M5ba800176e9.0.html (2016-02-16)
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  • Gräbener Maschinentechnik: Gräbener celebrates 90th anniversary
    1996 the time of the 75 year anniversary nothing really called for a celebration At that time Theodor Gräbener GmbH Co KG had just closed down the pipe mill and today s Graebener Group was merely an idea Theodor Gräbener GmbH Co KG opened the doors of its plant as did the neighboring company Gräbener Pressensysteme This company also has its roots in the former Gräbener Co Eisen und Blechbau G m b H Werthenbach Gräbener Pressensysteme however was sold to the Schuler Group by the Gräbener family in 1988 Keyword Schuler Last year Theodor Gräbener GmbH Co KG bought the premises and buildings in Wilnsdorf Wilden plus two large hydroforming presses from Schuler This workshop was open to the public as well On the day of the open house event approximately 2 500 people came to gather information on the Graebener Group Gräbener Maschinentechnik and H Kleinknecht GmbH Co KG In the workshop the visitors marveled at the large components of a pipe forming press a post bending press a continuous root tacking machine a long seam milling machine or one of the exhibited circ seam milling machines which are all currently being assembled in Werthenbach Two items on

    Original URL path: http://www.graebener-maschinentechnik.de/News.gmt-news-artikel+M5b2e7eeb789.0.html (2016-02-16)
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  • Gräbener Maschinentechnik: Gräbener Maschinentechnik and Reika at TUBE Russia
    Arabia From May 23rd to May 26th both companies of the Graebener Group will be exhibiting at the TUBE Russia in hall 7 5 booth B05 REIKA s RingSaw Avantgarde has the potential to become tomorrow s classics Detailed test runs in close cooperation with leading manufacturers of roller bearings confirmed and even exceeded the expectations remarkable savings due to the new technology using a saw head which orbits the stationary workpiece This innovative concept in comparison with conventional carbide saws leads to a reduction of tool costs by 50 to 80 percent while at the same time increasing the performance by 30 to 60 percent This means that the investment for a RingSaw can be amortized within a very short time Meanwhile test runs with bars smaller diameter of 40 mm and bigger diameter of 600 mm tubes have been carried out The results of these test runs are equally impressive and substantiate the savings potential of the RingSaw Not without reason REIKA is proud of this machine and its various applications Since its launch at the exhibition TUBE in Düsseldorf in April 2010 the RingSaw has been in almost constant operation for customers However this does not give grounds for resting on the success achieved The company based in Hagen North Rhine Westphalia Germany continuously strives to upgrade the state of the art tool technology by constantly optimizing the high tech tools in order to further enhance the already excellent results Continuous optimization is also the keyword for the company Gräbener Maschinentechnik GmbH Co KG Apart from hydroforming hot stamping presses as well as plate edge milling machines for the manufacturing of ship deck sections the company s main business field is the building of machines for the production of longitudinally welded pipes From milling machines pipe forming

    Original URL path: http://www.graebener-maschinentechnik.de/News.gmt-news-artikel+M5b2a790a78f.0.html (2016-02-16)
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  • Gräbener Maschinentechnik: One more Highlight at the Hannover Fair
    company received much attention for exhibiting a functional fuel cell for the energy supply of a traffic light on site a joint development with several partners This year Graebener Maschinentechnik will show a fuel cell stack in hall 27 booth E60 As the result of a development in close cooperation with the Zentrum für Brennstoffzellentechnik ZBT in Duisburg this fuel cell stack not only is characterized by a considerable reduction of weight and volume but also shows an impressive increase of power The stack made up of metal separator plates is the result of a development project sponsored by the Federal Ministry for Education and Research It is composed of eight cells and in comparison to the stack with eight graphite separator plates offers considerably enhanced performance features with an identical structure average power 200 Watt 137 6 mm width and 84 mm length Compared to the graphite solution the height of the metal separator stack has been reduced by 37 from 93 7 to 59 mm the volume by 37 from 1 082 to 0 682 liters and the stack weight by 38 from 2 132 to 1 323 g These numbers are quite impressive especially as the power

    Original URL path: http://www.graebener-maschinentechnik.de/News.gmt-news-artikel+M5615b9b3c2b.0.html (2016-02-16)
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  • Gräbener Maschinentechnik: Reika delivers fully automated finishing line for thin stainless steel pipes
    intention is to use this line for the transport of high grade duplex pipes made of stainless steel for heat exchangers with a diameter of up to 25 mm and a length of up to 30 meters These pipes need to be handled with utmost care not only due to their dimensions but also because they are partly polished All CNC controlled finishing lines made by Reika are highly specialized systems for a production that requires very little personnel Most of the time these systems are special transport systems for the longitudinal as well as the cross transport including numerous applications in the field of pipe marking and various testing methods In addition to this a sophisticated primary material flow system ensures highest process liability This line has been designed by Reika to meet the specific requirements of the customer for example by integrating special solutions in the areas of pipe return and batch assignment The manufacturing of the entire line was carried out in only six months The product range of the company Reika with a history of more than 100 years is quiet comprehensive especially in the sector of finishing lines It comprises of finishing lines for hot

    Original URL path: http://www.graebener-maschinentechnik.de/News.gmt-news-artikel+M5eb6a6b7bf0.0.html (2016-02-16)
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  • Gräbener Maschinentechnik: Graebener Group acquires Schuler real estate
    14 08 52 Graebener Group acquires Schuler real estate Significant enlargement of the surface area for production and offices The Graebener Group managing directors very recently signed a contract with Schuler Hydroforming for the acquisition of their production site in Wilnsdorf Wilden This enlarges the Group s premises by 7 000 m² for production and by 4 500 m² for offices Along with the real estate Graebener Group acquired two

    Original URL path: http://www.graebener-maschinentechnik.de/News.gmt-news-artikel+M541b5f56c35.0.html (2016-02-16)
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