国语自产偷拍精品视频偷拍图片,久久久久久影院,亚洲色无码中文字幕手机在线,白洁少妇第11集—56集

歡迎來(lái)北京東方德菲儀器有限公司!咨詢接觸角測(cè)量?jī)x相關(guān)產(chǎn)品信息!
產(chǎn)品分類

Product classification

技術(shù)文章

不同切削條件下,雙相不銹鋼轉(zhuǎn)變過(guò)程中的微硬度和表面完整性

更新日期:2015-09-14      瀏覽次數(shù):2092

The objective of the investigation was to identify microhardness of surface integrity (SI) after turning with wedges of coated sintered carbide. SI is important in determining corrosion resistance, and also in fatigue crack initiation. The investigation included microhardness analyses in dry and wet machining of duplex stainless steel. The microhardness of SI for various cutting speeds was compared. It has been shown that wet cutting leads to the decrease of SI hardening depth, while increasing the rounded cutting edge radius of the wedge increases the maximum microhardness values and the hardening depth. An infinite focus measurement machine has been used for the rounded cutting edge radius analysis. The study has been performed within a production facility during the production of electric motor parts and deep-well pumps as well as explosively cladded sheets.

Copyright © 2024 版權(quán)所有:北京東方德菲儀器有限公司  ICP備案號(hào):京ICP備05028011號(hào)-3  管理登陸  技術(shù)支持:化工儀器網(wǎng)   總流量:313816  網(wǎng)站地圖

在線交流 聯(lián)系方式 二維碼

服務(wù)熱線

010-68920257

掃一掃,關(guān)注我們