论文部分内容阅读
大英帝国化学工业有限公司最近在挤压金属(600℃以下)时采用一种新润滑方法。此方法的基本原理是:用石墨硫化钼(或用固态润滑剂)和粘结剂制成润滑垫。在挤压时将润滑垫放在挤压模和挤压金属之间,在挤压温度下,该润滑垫软化或熔化。在制造润滑垫时应注意,只用硫磺作为粘结剂是不适宜的,因此,润滑垫最好用80份的片状石墨与20份的硫磺粉混合制成,制造吋对润滑垫要施以5公斤/毫米~2的压力予以压榨。如果已制成的润滑垫厚度为12—13毫米的话,则应使它加热到200℃:如果其厚大于12—13毫米的话,则把它加热到
Imperial Chemical Industries Ltd recently introduced a new method of lubrication when extruding metal (up to 600 ° C). The basic principle of this method is: Use graphite molybdenum sulfide (or solid lubricant) and a binder made of a lubricating pad. The lubricant pad is placed between the extrusion die and the extrusion metal during extrusion and softens or melts at the extrusion temperature. It should be noted in the manufacture of lubricating pads, only the sulfur as a binder is not suitable, therefore, the best lubricating pad with 80 parts of flake graphite and 20 parts of sulfur powder mixture made of inch pad on the application To 5 kg / mm ~ 2 pressure to be squeezed. If the finished mat has a thickness of 12-13 mm, it should be heated to 200 ° C: if it is thicker than 12-13 mm it is heated to