论文部分内容阅读
自1962年12月开始到今年第一季度为止,我们总共试制了铬钼铜冰铸轧辊88根,其中用电炉熔炼的有20炉73根,用化铁炉熔炼的有5包15根。上述轧辊主要在本厂轧钢一车间进行试用,初步使用结果表明:铬钼铜冷铸轧辊的强度、硬度(比钼合金轧辊高3～5°Hs)和耐磨性比钼合金轧辊均有较显著的提高,用于轧制直径为12～19毫米圆钢,使用寿命平均提高72.6％,最高达一倍。一、铬钼铜对轧辊性能的影响在冷铸轧辊中,铬、钼、铜对轧辊性能的影响大致如下: (一)铬铬是碳化物形成元素,是强烈的碳化物稳定剂。铬能增加白口深度和提高轧辊的硬度(图1),同时也增加麻口层的深度,提高轧辊的脆性。
Since December 1962 until the first quarter of this year, we have tried a total of 88 chrome molybdenum and copper ice-casting rollers, of which there are 20 electric furnace smelting furnace 73, iron smelting 5 15 bags. The above-mentioned rollers are mainly tested in a rolling mill workshop. Preliminary results show that the strength, hardness (3 ~ 5 ° Hs higher than the molybdenum alloy roll) and the wear resistance of the chrome molybdenum-copper chilled roll are better than that of the molybdenum alloy roll Significantly improved, for rolling round bar with a diameter of 12-19 mm, the average service life increased by 72.6%, up to double. First, chromium chromium molybdenum on the roll performance In the chilled casting roll, chrome, molybdenum, copper on roll performance are as follows: (a) chrome chromium carbide forming elements, is a strong carbide stabilizer. Chromium can increase the depth of the white mouth and increase the hardness of the roll (Figure 1), but also increase the depth of the stoma and improve the brittleness of the roll.