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初步探讨了稀土对耐磨高碳铬钼钢的作用。Hearin a preliminary approach is made to it.

介绍了铬钼钢的高浓度渗碳试验。The high carbon concentration carburization for Cr-Mo steel was introduced.

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码厚四十八毫米拉伸铬钼钢完全环绕司机和领航员。Yards of thick 48mm tensile chrome-moly steel completely surround driver and co-driver.

探讨了稀土在烧结铜钼钢中的作用机理。The strengthening mechanism of rare earth element in sintered copper molybdenum steel has been studied.

研究了稀土元素对烧结铜钼钢性能的影响。The influence of rare earth element on the properties of sintered copper molybdenum steel has been studied.

论述了中国钢标准情况，对含钼钢标准进行了分析与介绍，提出建议，指明方向。Dicuss the situation of steel standard, analyse and introduce molybdenum steel standard and put forward some suggestions.

优质铬钼钢锻造，整体硬度高达HRC52-55，主要用于拆卸破环的螺栓。High-quality chrome molybdenum steel forged, the overall hardness up to HRC52-55, mainly used for removal of broken bolt.

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亚硝酸盐是一种既能防止铬钼钢腐蚀，又能抑制其裂纹扩展的较为理想的防腐蚀剂。NaNO2 is a better inhibitor, which can not only avoid the corrosion of Cr-Mo steel, but also can restrain the crack propagation.

亚硝酸盐铬钼钢曲轴保证了最佳的拉伸强度和表面的长期运作的硬度。The nitrite chrome-molybdenum steel crankshaft guarantees the best tensile strength and surface hardness for long-time operation.

研究了稀土元素对烧结铜钼钢性能的影响，探讨了稀土在烧结铜钼钢中的作用机理。The effects of rare earth elements on the performance of sintered Cu Mo steel have been investigated, and their mechanism of action is discussed.

阀门主体材质有铸铁、球铁、碳钢、合金钢、不锈钢、铬钼钢等材质。Valve of the main materials are cast iron, ductile iron, carbon steel, alloy steel, stainless steel, chrome molybdenum steel, and other materials.

铬钢和铬钼钢表面局部缺陷焊补可采用A402焊条补焊，不需处理。For those local surface defects on chrome steel and chrome-molybdenum steel, welding rod A402 may be used for repairing, no other treatment is necessary.

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论述了大型氨合成塔以铬钼钢为内筒的多层包扎筒体制造过程中的特点。The manufacture characters of multi-layer wrapped shell whose inner shell base material is CrMo steel for ammonia synthetic tower of 3200mm are discussed.

采用锌阳极和铝阳极的防止腐蚀方法虽能防止铬钼钢腐蚀，但对其裂纹的扩展起明显的加速作用。The Zinc and Aluminum anode protector can prevent the Cr-Mo steel from corrosion. However, it has the obvious effect of accelerating the crack propagation.

对铬钼钢强、硬度之间的关系进行了回归分析，建立了相应的回归关系式。Synopsis Regression analysis has been conducted on the relationship between the strength and hardness of Cr-Mo steel and the regression formula accordingly set up.

通过制氢装置中的设备——原料预热器的制作，介绍了铬钼钢螺旋盘管和焊接垫片的成型及焊接、无损检测等工艺过程，实现了此类产品的国产化，并为类似产品的制造提供了借鉴。The article based on fabrication process of the pre-heater which is the equipment of hydrogen manufacturing unit, and the forming of Cr-Mo steel coil and welding gasket was analyzed.