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前言我厂铸造分厂铸件产量大,清理工作繁重,为提高抛丸效率,采用的是大粒度的白口铸铁弹丸(粒度3．8~4．5),抛九率高达11．0公斤/瓦千·分。因此称为大负荷抛丸机,由于工作条件恶劣,叶片寿命较低。同样材质的叶片在其它分厂使用寿命200小时,在本分厂仅20小时左右,故叶片寿命急待提高。我厂工艺处及设备修造分厂、吉林工大铸工教研室共同进行了约一年试验,采用钇基重稀土取代微量Ti合金,并调整热处理工艺,从而提高了叶片韧性,使大负荷抛丸机叶片寿命从原来不足30小时,提高到100小时以上。
Preface Our factory castings castings large output, heavy cleaning work, in order to improve the efficiency of shot blasting, using a large particle size white iron pellets (size 3.8 ~ 4.5), throwing nine rate as high as 11.0 kg / W So called large-load shot blasting machine, due to poor working conditions, lower blade life. The same material leaves the other branch life of 200 hours, only about 20 hours in the branch, so the blade life expectancy to be improved. Our factory technology department and equipment building branch, Jilin University Casting Teaching and Research Office jointly carried out about one year test, the use of yttrium-based heavy rare earth instead of trace Ti alloy, and adjust the heat treatment process, thereby increasing the blade toughness, so that large-load shot blasting machine blades Life expectancy from less than 30 hours, increased to 100 hours or more.