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针对原ND—1型粘度计达不到冶金渣的测试要求,进行了相应的技术改进并根据实测中存在的一些问题,提出一些经验体会。一、原DN—1型粘度存在的问题原DN—1型钢丝扭矩式高温粘度计是按内柱体旋转法来测定熔体粘度的。即在钼丝炉内用坩埚盛装高温熔体,把用钢丝吊挂的一园柱形测头浸入熔体一定深度,并作匀速旋转。由于坩埚静止不动,测头与熔体相对运动,使熔体沿径向产生速度梯度,从而熔
For the original ND-1 viscometer can not reach the test requirements of metallurgical slag, the corresponding technical improvements have been made and some experiences have been put forward based on some problems in the actual measurement. First, the original DN-1-type viscosity problems DN-1-type high-temperature wire torsion viscometer is based on the cylinder rotation method to determine the viscosity of the melt. In the molybdenum furnace with a crucible for high temperature melt, the wire hanging a cylindrical probe immersed in the melt depth, and for uniform rotation. As the crucible is stationary, the relative movement of the probe and the melt causes a radial velocity gradient in the melt,