EOW May 2014

News Technology

Cold connections for stronger welds

All PWM machines are precision engineered to produce reliable consistent welds stronger than the parent material, helping manufacturers avoid downtime, save materials and improve productivity. Clean, quiet and easy to operate, PWM cold welders are user-friendly, enabling even untrained operatives to produce consistent high quality welds. The company’s best-selling models are the EP500 rod welder and the M101 manual cold welder, which can be used on a workbench or with a trolley. For smaller wire sizes, 0.1mm to 1.8mm, PWM manufactures hand-held manual machines, suitable for joining wire breaks in confined spaces, as well as larger machines that can be used on a workbench or supplied with a trolley. Cold welding can be used to join dissimilar materials, for example, aluminium to copper, and materials of different sizes. PressureWelding Machines Ltd – UK Website : www.pwmltd.co.uk

Modern welding technology has to be efficient, reliable and cost effective in order to help wire and cable manufacturers improve productivity and avoid downtime. Although cold pressure welding is an ancient method of joining metals that dates back to the Bronze Age, it remains popular today. The process is quick, clean and easy. It creates permanent bonds without heat, flux or fillers and the electrical integrity of the join is not affected. Cold welding is equally effective on fine wire and large rod sections, and can be used to join most non-ferrous materials, as well as various alloys. British company PWM, which celebrates its 30 th year of service to the wire and cable industry in 2014, is a specialist designer, manufacturer and supplier of cold welding equipment. The company, which has been at the forefront of cold welding technology for many years, designs and builds its high-performance machines and dies in-house to exacting quality standards. PWM cold welders are durable, reliable and accurate. They are built to last: one of

PWM’s first P500 models, manufactured in 1985, is still working. ▲ ▲ The P1500 electrohydraulic rod welder from PWM The dies play a major role in the cold weld process. PWM’s are individually hand-made in matched sets to ensure complete accuracy. They can be made in industry standard or custom sizes to suit round or profile wire and rod, and PWM can produce dies to weld two different sizes of material together if required. PWM manufactures cold welders for a variety of applications, from small, hand-held manual machines suitable for joining fine wire 0.1mm diameter, to large, freestanding rod welders capable of bonding rod 30mm diameter.

New and improved Gi-100DT

Gi recently redesigned and improved the Gi-100 with the Gi-100DT, which features a dial table style glass top, allowing stability of the parts. This allows for better image analysis, data capturing and precision. The Gi-100DT is primarily used for sorting flat parts that have more than a 2:1 length to diameter ratio – nuts, valve spring retainers, rivets, bushings, washers, etc – all at up to 1,000 parts per minute (though most parts average closer to 400 parts per minute). Multiple sensors can be added to the Gi-100DT, including eddy current, multiple vision stations with Gi speciality lenses and laser topography. Eddy current ensures the check for metallurgical defects such as cracks, missing plating or hardness variations. Vision stations can be added to detect defects like chips in the ID, missing internal threads and even damaged threads on deep threaded holes, nylon ring presence, chips in grooves, cracks, missing or damaged weld projections and missing crimp. The newest sensor, laser topography shows a 3D profile of the parts and can measure diameters, heights, as well as find defects like chips, dents and flatness. The Gi-100DT is used to inspect 100 per cent of the production. This instrument of lean, sorting machine, has great flexibility to sort a wide variety of parts. The Gi-100DT with its array of patented and patent pending sensors allows customers to achieve zero defects and realise improvements in the manufacturing process, reduction in variation, and improved profitability. General Inspection LLC – USA Website : www.generalinspection.com

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May 2014