Italy Dominates in Crushning Buckets New Core Drills ... - PDWorld

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The UK diamond drilling specialist, D-Drill Master Drillers was the first drilling contractor to be involved in the Shard London Bridge project in the centre of London. Subcontracted directly by Barhale, the D-Drill team was brought in to help establish the make up of the ground underneath the 28 year old Southwark Tower before demolition work could start. Operatives trained to work in confined spaces, using breathing apparatus and escape kit, conducted inverted and horizontal drilling at the bottom of an 18m deep shaft, which was Drilling to the Core at Shard London Bridge part of a World War II shelter and long redundant underground station. Drilling depths of 3m and 150mm diameter through reinforced concrete and cast iron liners were conducted to obtain core samples for material testing, necessary for the predemolition planning. “It was great to be one of the first contractors on the Shard project, working on an old London site,” says D-Drill south branch manager John Barber. “D-Drill was brought in because of our experience and ability to drill in confined spaces Retipping saves costs For more than 15 years the Swedish company Midhage Diatip has been a supplier of equipment for re-brazing segments onto diamond tools. In the beginning the range focused on equipment for the retipping of diamond core bits, but recently the range has been supplemented with machines for the production of diamond blades. The business idea is not to compete with suppliers of machines for the big professional diamond tool manufacturers, but rather offer low price options for the small manufacturers or the service shops. The founder of the company, Jack Midhage, was a well-known name in the diamond tool business. In spite of his age Jack Midhage took part in the development of new products and in sales and marketing. Today the late Mr Midhage´s son and daughter are directors and involved in running the business in co-operation with the different manufacturers. Carina Midhage, who is doing most of the customer contacts, is happy to be able to continue her father’s work selling machines for retipping and manufacturing of diamond tools all over the world and says that there has been an increasing interest in the company’s products in recent years. As a result of the bad times there is a need to repair instead of always buying new and Midhage Diatip can offer the equipment and auxiliaries that make the job easier. “And for the moment our export customers can also take benefit of extra discounts because of the low currency rate on the Swedish Krona,” says Carina Midhage. The company’s growth has benefited from a 32 PDi • Is s u e 1 - 2009 • Fe b - Ma r c h number of trends. Previously the cost of the diamond segments constituted a major part of the total tool cost. Now other costs have become more significant, particularly those of steel centres and barrels, as well as transportation. The retipping range The top selling model is still the CD 7-28 for retipping core bits. The machine cuts off the worn end of the used barrel at the same time as it cuts neat and accurately positioned seats for the new segments. The seats make it easier to braze the new segments and make the whole bit stronger. It is also available as a smaller model, the CD 600, which is lower in price and easier to take to site. These are manual models that work without electrical power but they can also be supplemented with hydraulic motors for the cutting. In addition there are also fully automatic models controlled by a CPU. For fixing the segments while brazing the company’s brazing magnets have become very popular. They are available in different types and with different dimensions to suit all bits. Beside this range of machines for the core bits there is also a full range of machines for the repair or manufacturing of diamond blades, brazing machines, a dressing and grinding machine and a tensioning machine. These machines are designed to suit repair shops or the small series production. The brazing machine, HFCS-1600 SA, is semiautomatic that brazes the segments onto the blades with a high frequency generator. The preparations and the rotation of the blade are and our understanding of demolition requirements. We are now expecting to be involved in more drilling and sawing projects as the construction of the Shard continues.” Shard London Bridge is set to become the UK’s & Western Europe’s tallest building standing at 310m and spanning over 72 floors. The brainchild of Italian architect Renzo Piano, this prestigious project is set to be complete by the end of 2011. www.d-drill.co.uk In charge of sales, Carina Midhage. manual, but the feeding of the segment in position for the brazing is controlled by a pneumatic system. Also the dressing machine, SD 1200, works half manually. The grinding heads are fed by hand wheels, but the oscillating movements for an even wear of the grinding wheels are automatically performed. On the tensioning machine, T 1600, an electric motor does the rotation of the blade, but the pressure is manually controlled. The company is flexible and many of the machines are specially designed by request from customers. Morgan Midhage, who has been in the diamond business for 20 years, noticed that as the floor grinding market has expanded there has been an increased interest for equipment that can make the retipping of floor grinding plates easier. This demand resulted in the new GH 15 in the programme for brazing segments onto discs, plates and cup wheels. The machine works with a high frequency generator and can braze material up to 15mm in total thickness. www.diatip.com Correct marking of abrasives – a must for oSa-members There is a huge range of tools in use today that are easy to operate, bear little or no marking and do not come with an instruction manual. This is the case for simple hand tools, such as hammers and screwdrivers, but for abrasive products the requirements are much different. Abrasive wheels incorrectly selected or misused can be very dangerous, causing serious injuries. The range of products in terms of size, shape, specification and operating requirements require explicit marking regulations. International and European standards of abrasives therefore require that the maximum permissible operating speed (in m/s and RPM), the dimensions and any particular restrictions to its use be marked directly on the abrasive wheel. And this marking must be legible and permanent. Unfortunately many products do not meet these requirements and, therefore, give rise to great safety risks. Consequently, the message from oSa to all users of abrasives is “Don’t use a product if its marking is illegible, incomplete or missing!” Almost every week the oSa-headquarters receive information on insufficiently or incorrectly labelled products marked with the oSa®-logo. If these are manufactured by an oSa-member, a phone call usually helps to clarify the case and admonish the member to mark correctly in future. If however we have to deal with a counterfeit or private label product, a lawyer will be used. A severe infringement of oSa-regulations is the missing 5-digit private label number, as this number safeguards traceability from the user/dealer/importer back to the manufacturer. The counterfeiter will in such cases have to sign a cease and desist letter and cover the legal costs. Further possible legal steps are the destruction of the counterfeits and compensation dependent on the turnover. Members of oSa are totally committed to the correct marking of their products. To help members in the correct marking of abrasives, instructions for the different abrasive products will shortly be provided in the internal member section of the oSa website. www.osa-abrasives.org
Mässinformation: Promosalons Sverige AB Tel: 08-660 40 11 56 PDi • Is s u e 5 - 2008 • De c 08 - Ja n 09 sweden@promosalons.com A trade show organized by International Exhibition of Equipment, Machinery and Techniques for the Construction and Building Materials Industry 2009 From 20 to 25 April PARIS-NORD EXHIBITION CENTRE - FRANCE Building the future 1,500 exhibitors 210,000 visitors 200,000 m 2 exhibition www.intermat.fr INFOLINE :+33 (0)1 55 23 71 73
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Italy Dominates in Crushning Buckets New Core Drills ... - PDWorld

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