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旋耕弯刀切土能耗理论分析及降低能耗的途径 被引量:6
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作者 曲国良 彭嵩植 《南京农业大学学报》 CAS CSCD 北大核心 1991年第1期94-99,共6页
对r=195mm旋耕弯刀侧切面、正切面切土能耗进行理论计算表明:正切面切土能耗大于或接近于侧切面切土能耗。增大旋耕刀安装角可以改变土壤破坏形式,减少切土阻力,建议:r=195mm普通旋耕刀安装角可取65°左右;曲母线正切面旋耕刀安装... 对r=195mm旋耕弯刀侧切面、正切面切土能耗进行理论计算表明:正切面切土能耗大于或接近于侧切面切土能耗。增大旋耕刀安装角可以改变土壤破坏形式,减少切土阻力,建议:r=195mm普通旋耕刀安装角可取65°左右;曲母线正切面旋耕刀安装角可取70°左右;其它类型旋耕刀的安装角亦可参照此结论相应增大。 展开更多
关键词 切土 降低途径
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关于外贸裤装订单首次报价分析
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作者 张中启 张欣 刘弛 《山东纺织经济》 2006年第6期42-43,共2页
本文从面料成本、里料成本、包装成本三个方面来分析,说明在外贸裤装首次报价应注意哪些问题,目的是让我们在首次报价时能够符合客户要求。
关键词 报价 套排 刀耗
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Machinability Investigation and Optimization of Process Parameters in Cryogenic Assisted Sustainable Turning of AISI‑L6 Tool Steel 被引量:1
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作者 JAMIL Muhammad HAQ Emran ul +3 位作者 KHAN Aqib Mashood GUPTA Munish Kumar LI Liang SONG Qinghua 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2020年第3期403-415,共13页
The application of cutting fluid is significantly increased in the machining sector to improve productivity.However,the inherent characteristics of cutting fluids on ecology,environment,and society shift the interest ... The application of cutting fluid is significantly increased in the machining sector to improve productivity.However,the inherent characteristics of cutting fluids on ecology,environment,and society shift the interest of researchers to work on environmentally friendly cooling conditions such as cryogenic cooling.Here,the effect of cutting speed and feed rate on the machining performance of the AISI‑L6 tool steel is investigated under cryogenic cooling conditions.Then,the L9 Taguchi based grey relational analysis(GRA)is conducted to investigate the essential machining indices such as cutting energy,surface roughness,tool wear,and material removal rate(MRR).The results indicate that the cutting speed of 160 m/min and feed rate of 0.16 mm/r are the optimum parameters that significantly improves the machining performance of AISI‑L6 tool steel. 展开更多
关键词 sustainable manufacturing cryogenic machining hardened steel energy consumption tool lif
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