This page contains a Flash digital edition of a book.
Pulp Paper & Logistics


INDUSTRY NEWS 21 DEMAG


management system is supplied by Terex Material Handling. The steelwork for the crane girders and crane runways is manufactured locally by MHE-Demag. The crane systems are assembled and installed and the value of the installation is maintained by the service network provided by MHE- Demag.


Demag technology as key part of growth strategy “The investment in two new paper-roll shipping stores is a key element of our growth strategy,” said Chartchai Leukulwatanachai, managing director of Siam Kraft Industry. “For these projects, we rely on a company with regional expertise in the form of MHE- Demag and an international technology network. We also decided in favour of Demag process crane engineering thanks to a large number of first-class references.” Lutz Dowy, vice president at Global Product Management & Process Cranes at Terex Material Handling, added: “The equipment installed at the two paper-roll shipping stores marks the first fully-automated Demag crane systems in Thailand. The installations play a major role in boosting the storage capacity and handling volume at the locations operated by Siam Kraft Industry.” A subsidiary of SCG Paper, Siam


Kraft Industry Co has a yearly production capacity of 1.7 million tons at 12 production facilities in Thailand, the Philippines and Vietnam, and is one of the largest manufacturers of paper in the ASEAN region. The newly-installed PM16 paper machine at the Ratchaburi mill has an annual production capacity of 320,000 tonnes of recycled corrugated base papers weighing between 105 and 150 g/sqm.


When the new PM16 achieves its full production capacity, up to 1,050 tonnes of paper will have to be placed in the paper-roll store every day. The rolls, which are configured to meet individual customer specifications, measure between 620 and 2,520mm in width and weigh between 400 and 2,400 kg. The store for the PM16 covers


a total area of more than 3,300 sqm and can accommodate some 10,500 tonnes of paper when filled to 80 per cent capacity. The store is filled around the clock in a 24/7 operation, while product is retrieved in two shifts. During periods in which no loading operations are performed, the cranes optimise the store with reference to subsequent retrieval operations.


The shipping store is divided up


into two areas in which the rolls of paper can be placed in stacks up to a height of 13.5 m, depending on their relevant diameter. Three identical ZKKW double-girder overhead travelling cranes, which have a load capacity of 2.8 tonnes and a span of 35.5 m, operate on a crane runway that measures 90m in length. The cranes handle unwrapped rolls that have a maximum diameter of 3,600 mm and weigh up to 2,880 kg. Siam Kraft Industry placed emphasis on a high level of dynamics when planning the store: up to 120 rolls can be handled per hour. Besides a consistent storage concept, the high handling speeds specified by the paper manufacturer require high performance to be delivered by the crane systems. The variable-speed long and cross- travel drives reach speeds of up to 120 and 100 m/min, respectively; lifting speeds of up 57 m/min are achieved, depending on the load. Besides the high operating


V-type crane reduces deadweight and improves performance


Oscillation characteristics are cut by up to 30 per cent with Demag’s V-type design


A new generation of cranes has been launched by Terex Material Handling that is claimed to set a new standard in the industry. The design of the Demag V-type type girder means that it weighs


on average 17 per cent less than comparable box-section profile girders. The reduced crane deadweight produces less wheel pressure, minimises the forces transmitted to the existing building structure and increases the maximum load capacity. Consequently, the new Demag V-type crane gives architects greater freedom for planning new factory buildings and is also suitable for companies that want to employ it in existing assembly and production bays. The design, which features diaphragm joints, also cuts oscillation of the crane girder by up to 30 per cent. The reduced oscillation characteristics cause lower loads to be transmitted to the crane and its components, as well as to the entire building, and double the service life of the crane to more than 500,000 changes of load. In addition, the improved oscillation characteristics enable heavy and sensitive loads, to be positioned more precisely and quickly. “The new V-type girder is the result of our continuous


development in the crane engineering sector,” explains Andreas Hambrock, chief of Universal Cranes Business at Terex Material Handling. “The new crane is an ideal supplement to our existing range of rolled and box-section girders. Thanks to its special design, sensitive loads can also be transported safely and precisely indoors and in outdoor applications. We are now able to cater to our customers‘ needs even better and can offer them solutions to meet their specific load handling requirements, boost their productivity and, at the same time, improve their operating safety.” The new Demag V-type girder is initially available as a single-


girder crane on the German market. It can be employed for various crane types, such as overhead travelling cranes, suspension cranes, portal cranes or wall-mounted travelling cranes.


4 November/December 2014


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36