淬硬钢

The laser strengthening technology is an effective means to improve the abrasiveness of the metals.

激光强化技术是有效改变金属材料耐磨性的一种手段，对于半钢材质来说，只要选择的加工工艺参数合理，就可以获得理想的淬硬层组织。

The tip of the screw driver has been made of hardened steel which has been ground to provide a long life and a precise carburettor set-up.

尖端的螺丝刀已经取得了淬硬钢已地面提供一个长期的生活和一个确切的化油器的设立。

It is proved in production practice that the actual conversion values between rockwell and vickers hardness of quenched tempered high speed tool steel dont correspond with the values in GB/T1172-1974 《Conversion Tables on Hardness and Strength of Ferrous Metals》.

引言多年来，一些高速钢工具专业生产厂和自用生产厂在测量淬硬高速钢的洛氏硬度 HRC和维氏硬度 HV时觉察到两种实测硬度之间的换算值与国家标准 GB/T1 1 72 - 1 974《黑色金属硬度及强度换算表》中的换算值不相符合。

On the basis of establishing planar cutting model and cutting equation, through analyzing the rigidity of technical system infrequency chart, change cutting coefficient and the angle of cutter etc, emphasis measuring and analyzing hard turning 45 hardened steel the damaged layer of finished surface cutting force the roughness on finished surface and researching on the mechanism of wear and damage of cutter.

在分析二元切削模型和切削方程的基础上，进一步研究了切削变形及其影响机理；通过工艺系统刚性的频谱分析，改变切削用量、刀具几何参数等因素，测量并分析研究了精切淬硬钢的切削力、已加工表面粗糙度、加工硬化及表面残余应力及刀具的磨损情况，基本形成了精加工45~#淬硬钢的切削基础理论。

The constitutive relationships of hardened 45 steel and Fe-36Ni invar alloy are fitted by the improved Johnson-Cook model.

采用改进的Johnson-Cook模型拟合了淬硬45钢和Fe-36Ni因瓦合金的动态塑性本构关系。

In alloy steels the kind and amount of alloying element influences only the hardenability (the ability of the workpiece to be hardened to depths) of the steel and does not affect the hardness except in unhardened or partially hardened steels.

除了非淬硬钢或部分淬硬钢外，合金钢中合金元素的种类及含量仅影响钢的淬透性(工件被硬化到深层的能力)而不影响硬度。

Kit are 4 hardened steel lathe chisels, 12 assorted hardwood dowels, 1 faceplate, 1 wood screw drive center and one honing stone.

包含在目录第701套件4淬硬钢的车床凿子， 12各式硬木dowels ，一面板， 1木材螺旋传动中心和1珩磨石。

As the steel carbon and alloy elements working together to make it extremely easy to lead in the welding hardened organization, welding poor performance should be this, pearlitic heat-resistant steel in general preheating before welding, after welding tempered.

由于钢中碳和合金元素的共同作用，使其在焊接时极易形成淬硬组织，焊接性能较差，应此，珠光体耐热钢一般焊前进行预热，焊后进行回火处理。

The hardness of HSS roll was over 66 HRC, the depth of hardened layer excesses 30 mm, the variation of hardness in the roll surface was smaller than 1.5 HRC, and the wear resistance of HSS roll was better than that of high chromium cast iron roll and high nickel chromium indefinite hilled cast iron roll, close to that of powder metallurgy hard alloy roll.

研制出的高速钢轧辊硬度超过66HRC，淬硬层深度超过30mm，辊面硬度差小于1.5HRC，耐磨性优于高铬铸铁和高镍铬无限冷硬铸铁轧辊，接近硬质合金轧辊。

In this paper a series of experimental data were analyzed when chamfered PCBN cutting tools were used to turn the hardened GCr15 bearing steel.The correlations between chamfer angle and cutting forces as well as tool wear were observed.

超硬刀具材料作为近年新兴的刀具材料，越来越为人们所了解和熟悉，其中PCBN刀具在加工淬硬钢和铸铁等材料时表现出了更为优异的性能。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。