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Metal Casting Technologies : March 2006
PRODUCTS METAL Casting Technologies March 2006 59 Heating Element Designed for Multi- Atmosphere Furnaces The Kanthal Super ER heating element is providing opportunitites in the powder metallurgy industry for designing heating systems capable of meeting the process demands of multi-atmosphere furnaces. This means that it is now possible, in one furnace, to operate firing cycles where the atmosphere condition can be altered during the cycle between oxidizing, inert, endogas and reducing atmospheres. Kanthal Super ER elements are particularly suited to most types of sintering process in dry dydrogen and nitrogen/ hydrogen mixtures, and furnaces with alternating oxidizing and reducing atmospheres at temperatures up to 1400°C. They are equally suited to continuous furnaces with hydrogen containing atmospheres for sintering ferrites and other electro-ceramics. Key powder metallurgy applications have been identified in the automotive and electronics industries. Kanthal Super ER is a unique concept for heating elements, combining the high termperature properties of molybdenum/silicon (MoSi2) material with the excellent stability given by the A12O3 layer of iron/chromium/ aluminium (FeCrA1) material. Super ER is an intermetal/ ceramic composite material based on molybdenum/silicon/ aluminium (Mo(SiA1)2). The material can withstand 1580°C element termperatures and forms a stable protective aluminium oxide (A12O3) layer on the surface when heated. The element is equally suitable for low temperature oxidizing processes. T: +61 3 9238 7216 F: +61 3 9238 7165 E: SALES.AUSTRALIA@KANTHAL.COM W: www.smt.sandvik.com MIG welder cuts weight by 75% Kemppi's MIG 250A has been developed around the latest inverter technology. The weight of the new MIG machines is about only a quarter of similar equipment on the market, so is easy- to-move and is particularly suitable for on-site repair, installation and supply work as well as for light or medium duty use. The Kempact 2520 and 2530 models are made for applications where portability is an essential consideration. Weighing only 17 kg (2520) and 20 kg (2530), these machines are light to move and feature high duty cycles of 250 amps at 40%. These machines have superb arc performance with arc ignition assisted by automatic end- pulse and burn-back time technology. There is no longer a need to cut the ball at the end of wire before welding. Kempact inverter-based machines are equipped with stepless wire feed speed and voltage control so that users can optimise arc performance. Polarity is simply changed for gasless, flux-cored wire welding. Wire-inch with a safety speed feature makes the spool change easy, quick and with a high safety factor. Kempact machines are equipped with two-wheel wire drive mechanisms providing smooth feeding with Fe, SS and Al wire materials. Kempact MIG 250A units are designed for use from power generators, extending the field of operation even further. A two-wheel transport unit ST7 allows the Kempact MIG 2530 to be mounted away from the workshop floor. T:+61296059500, E: email@example.com