摘要
为保证耐磨性能,M224床身导轨部位最低硬度要求为HB190。保证截面厚大的导轨部位具有高硬度,同时又兼顾其他薄壁部位的加工性能,是分层浇注工艺所要解决的核心问题。依据M224床身铸件的结构特点,采用不同材质的金属液分层浇注床身铸型,所得到铸件完全符合设计要求。实践证明,分层浇注工艺的应用使铸件各部位的性能达到要求,使机床床身铸件的成品率显著提高。
The minimum hardness of HB 190 is required for M224 grinder bed guide-track to ensure its wear-resistance. The key of the layer-pouring process is to ensure both the high hardness of the heavy section of guide-track and the fine machining performance of other thin-walls. According to the structure characteristics of the M224 bed casting, using different material of liquid metal to layer-cast bed parts can make it possible that the obtained casting meet the designing requirement. Practice proves that the application of layer-pouring process can make the various performance requirements of the casting parts be satisfied and rate of the finished product of grinder bed casting increases markedly.
出处
《铸造》
CAS
CSCD
北大核心
2009年第9期962-964,共3页
Foundry