The difficulties in the production of steel parts, with a uniform carbon content from the surface to the centre and a constant carbon content from one part to another, are well known. Recent progress on sintering atmospheres with regard to carbon content is assessed and found lacking, especially when compared with the current demands of the automotive industry. The author investigates the operating conditions in a furnace with a good production rate and submits possible explanations for this, as well as suggesting a means by which the sintering atmosphere may be controlled. PM/0142
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