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首页> 外文会议>Powder metallurgy world congress amp; exhibition >Lubricant Elimination on 304L Stainless Steel Compacts with Solar Concentrated Energy
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Lubricant Elimination on 304L Stainless Steel Compacts with Solar Concentrated Energy

机译：利用太阳能聚能消除304L不锈钢压块上的润滑剂

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Stainless steel parts are usually manufactured with a de-lubrication step before sintering. Solar concentrated energy allows carrying out this step on stainless steel parts. Laboratory green samples of 304L with 0,8% lubricant content were heated on air using a solar furnace. Zinc Stearate and wax were used as lubricant. Green samples reached a density close to 6.78 g/cm3. Weight loss during de-lubrication tests was function of sample temperature, heating rate and time. Hot plate sample position leads to different heating conditions. Thus, a brown colour and dark residues on sample surface had been obtained. Also pre-sintering was carried out at 950°C in vacuum to complete lubricant elimination. A density close to 7.0 g/cm3 was obtained on de-lubricated samples after vacuum sintering at 1250°C, within a dimensional change close to 1.2% . Carbide particles precipitation is found on sintered samples due to slow cooling rate and high heating rate on de- lubrication step.
机译：不锈钢零件通常在烧结前通过脱脂步骤制造。太阳集中的能量允许对不锈钢零件执行此步骤。使用太阳能炉在空气中加热具有0.8％润滑剂含量的304L实验室绿色样品。硬脂酸锌和蜡用作润滑剂。绿色样品的密度接近6.78 g / cm3。脱脂测试期间的重量损失是样品温度，加热速率和时间的函数。热板样品位置会导致不同的加热条件。因此，获得了褐色和样品表面上的深色残余物。同样在真空中于950℃进行预烧结以完全除去润滑剂。在1250°C真空烧结后，在脱脂样品上获得的密度接近7.0 g / cm3，尺寸变化接近1.2％。由于脱脂步骤中冷却速度慢和加热速率高，在烧结样品上发现了碳化物颗粒沉淀。

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