表面钢化

They are the strengthening-toughening of 40SiMnCrNiMoA by the critical normalizing, the fine macrostructure and property matching between the all drill rod parts, the low tendency of decarburizing and delete the weak inner hole surface owe to the drill-hole and hot-rolled with core process of rolling steel.

本文研究表明，40SiMnCrNiMoA钢亚温正火强韧化特性、亚温正火使钎杆整体性能良好地匹配、较小的脱碳倾向和钻孔法消除钎杆内孔粗糙和脱碳表面是钻孔法并整体780℃亚温正火+钎柄淬火和低温回火的H22-40SiMnCrNiMoA锥体连接小钎杆延寿的主要原因。

The invention provides a method and apparatus for monitoring subsurface chromium depletion from a steel member, such as a pyrolysis pipe.

本发明提供一种用于监测诸如高温裂解管道之类的钢构件的表面下铬贫化的方法和装置。

The company sells aluminum alloy, steel, copper and aluminum compound, aluminum compound radiator elegant appearance of novel, surface treatment by phosphating using special plastic electrostatic spraying, spraying process is not rigorous to ensure that the spray does not blast off from, the Company Xinjin anti-corrosion treatment equipment within the vacuum will be filling three anti-corrosion materials, this technology to further enhance adhesion of anti-corrosion materials, eliminating the dead-end coating, the coating process to prevent the bubble wall formation enhances the adhesion within the anti-corrosion, greatly extended the radiator life.

本公司销售的铝合金，钢质、铜铝复合、钢铝复合散热器外观新颖雅致，表面经磷化处理采用专用塑料静电喷涂，喷涂工艺严谨确保喷涂不脱落不爆起，本公司新进内防腐真空处理设备将防腐材料三次灌装，此工艺进一步提高防腐材料的附着力，消除了涂装死角，防止了涂装过程中管壁气泡的形成，增强了内防腐的附着力，大大延长了散热器的使用寿命。

The alloying layer was formed on the saw blade tooth of 20 steel by ion penetrating W and Mo.

5mm的板状源极，利用双层辉光离子渗金属技术，在以20钢为基材的手用锯条齿部表面，渗入W、Mo元素形成合金化层。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。