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- The chemical heat treatment of ferrous PM parts,such as carbonizing,carbonitriding are reviewed. 本文对用于铁基粉末冶金零件的化学热处理工艺,诸如渗碳、碳氮共渗等进行了说明。
- Keywords Ferrous PM parts;Chemical heat treatment;Carbonizing;Carbonitriding;FNC;Numerical model; 铁基粉末冶金零件;化学热处理;渗碳;碳氮共渗;FNC;数字模型;
- Ferrous PM parts 铁基粉末冶金零件
- About 70 PM parts,weighing 6.5 kg are used for each car. The amount of annually consumed ferrous powder increased to 50 000 metric tons in 2003,about 63 percent of which were imported from Sweden. 汽车工业的飞速发展推动了粉末冶金结构零件的发展;韩国每辆小汽车上用约70个粉末冶金零件;略大于6.;5 kg;2003年铁粉消耗量达到5万吨以上;约63%25的铁粉从瑞典进口;
- Producing iron-base PM parts with scrap steel powder instead of common steel powder will decrease the production cost and economize resource greatly. 以废钢粉取代普通钢粉制备铁基粉末冶金制品可以大幅度降低生产成本,节约资源。
- Others: PM parts for automobile, motorcycle, household appliance, construction machinery and textile machinery industries. 其它:汽车、摩托车、家电、工程机械、纺织机械等行业使用的粉末冶金零部件。
- The improved compacting tool is practical as it allows density of thin wall to increase and ensures even density over PM part. 经过改进的成形模结构，不仅提高零件薄壁段的密度，而且保证了各部位密度的均匀，具有实用价值。
- My company was established in February 2005, the main business PM parts for the manufacture, possession PM Presses for automatic and related professional equipment. 我公司成立于2005年2月，主营业务为粉末冶金零件的制造，拥有粉末冶金专用全自动压机及相关专业设备。
- There is no parking between 9 am and 6 pm. 上午9时至下午6时禁止停放机动车辆。
- If I remember rightly the party starts at 8 pm. 我记得聚会是在下午8点开始。
- He doubles the parts of a farmhand and a miner. 在这出戏里他既扮演雇农又扮演矿工。
- At 9 pm the prisoners are locked in for the night. 晚9时把犯人锁进牢房过夜。
- I'm tied up in a meeting until 3 pm. 我开会直到下午三点钟方可脱身。
- The various parts of the car are bolted together. 这辆汽车的各种配件是用螺栓装在一起的。
- She holds her surgery on Fridays at 6 pm. 她星期五下午6时接待选民。
- There will be rain in all parts of the country. 全国各地将有雨。
- The cast must all be on (the) set by 7 pm. 所有演员必须在下午7时到达拍摄场地。
- The funeral took place on 24 April at 3 pm. 葬礼已於4月24月下午3时举行。
- Oil the moving parts of this machine regularly. 要定期给这部机器的运转部件上油。
- Is the match on at 2 pm or 3 pm? 比赛是下午2时还是3时开始?
