铬铁

It briefly introduces the process of producing medium and low carbon ferrochromium with hot charging ferrochromium in electro-silicothermic method as well as the economic benefit obtained.

简要介绍了采用热装硅铬的电硅热法生产中低碳铬铁的过程和所获得的经济效益。

The modification effects of low-carbon ferrochromium and rare-earth ferrosilicon take second place.

低碳铬铁和稀土硅铁的变质效果次之。

The modification effects of low-carbon ferrochromium and rare-earth ferrosilicon took second place.

低碳铬铁和稀土硅铁的变质效果次之。

The main reasons of ladle lining damage and the factors affecting extra-low ferrochromium production with Perrin Process are analysed,and the measures to prolong ladle life are put forward.

分析了热兑法微碳铬铁生产中，反应包衬损坏的主要原因及其影响因素，提出了延长反应包寿命的措施。

Pure iron ingot, ferrochromium pillet, nickel balls and silicon slice were melted and refined with an induction furnace.

纯铁锭、铬铁块、镍球与矽块以304L不锈钢材的成份比例投入高周波炉内进行熔炼。

To smear solder flux paste or colophony on the PCB board of the dismantlement of BGA, remove the tin of welding plate of PCB board with ferrochromium

在拆除BGA的PCB板焊盘上涂上助焊膏或松香水，用电铬铁将PCB板焊盘上的锡去除

The practice is introduced for producing extra-low carbon ferrochromium with Perrin process of adding some silico-chromium to reduce FeO in molten chrome ore-lime to increase the ratio of Cr/Fe , and producing high chromium products (Cr≥72%) with this melt.

介绍了波伦法冶炼微碳铬铁过程中，先加入部分硅铬还原铬矿-石灰熔体中的Feo，以提高Cr/Fe；然后用此熔体生产出含Cr≥72％的高铬产品的生产实践。

Most ferrosilicon electric furnaces are open stove. Ferromanganese and ferrochromium electric furnaces which are closed-end are little.Large quantities of plume and dust which are seriously polluted to the atmosphere environment and natural ecological environment are emitting into the sky over the factory areas.

硅铁电路绝大部分还是敞口炉，锰铁和铬铁电炉已封闭的尚属少数，厂区的上空还大量散发烟尘对大气环境和自然生态环境的污染十分严重。

TiC/Cr19Al3 steel bonded carbides were prepared by in-situ synthesis taking ferrotitanium, ferrochromium, iron, carbon powders as raw material, and the microstructure of the steel bonded carbides was analyzed.

以钛铁粉、铬铁粉、铁粉、胶体石墨等为原料，原位反应生成TiC/Cr19Al3钢结硬质合金，并对所制备的试样进行组织结构分析。

Using carbon, iron, silicon, ferrochromium, ferrotitanium and nickel powder as the raw materials, chromium carbide/Fe-based composite coatings with an even and smooth surface were prepared by vacuum reactive braze coating, which combined with a mild steel substrate by a metallurgical bonding.

以纯铁粉、硅粉、硼铁粉、铬铁粉、胶体石墨及镍粉为原料，通过真空反应钎涂在低碳钢基体上制备了碳化铬／铁基自熔合金复合涂层，涂层表面光滑、平整且与基体为冶金结合。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。