淬火钢

TTT curves were determined by dilatometric testing and test specimens of these steels were austempered.

用热膨胀试验测定了TTT曲线，各组试验用钢的试样都进行了等温淬火。

Ever since the first proposal of the presence of β\|Fe in 1885 by Osmond, a great debate on the cause of quench hardening of steels was going on until 1922 when Westgren and Phragmén disproved the presence of β\|Fe by high temperature X\|ray diffraction analysis.

自从Osmond在 1885年首次提出β Fe以为，直到 192 2年Westgren和Phragm啨n用高温X射线衍射证明β Fe与α Fe有相同的体心立方结构为止，在很长时间内，冶金学家一直为钢为什么在淬火后变硬而争论不休。

In the spectrochemical analysis of high speed steels with a small current activated a.c.

一系列实验的结果指出，用小电流(5安)电弧光源时，铬的光谱分析结果由于试样是退火组织或淬火组织而有差别，这个差别又随着钢中含碳量的增加而增加。

The surface of 20 steel was treated by low temperature gas multicomponent thermochemical treatment .

对20钢表面进行低温气体多元共渗，再进行高频感应加热快速淬火与回火处理。

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 yield strengths of shot peened and unpeened surfaces of a quenched and low temperature tempered steel 60Mn have been detected by using the X-ray stress analyses and strain gauge methods.

利用X射线应力分析技术和应变电测法，对淬火加低温回火60Mn钢的喷丸表面和未喷丸表面的屈服应力进行了测量。

The effects of plasma arc quenching process parameters on the hardness and the surface friction and wear resistance of 45 steel were studied.

中文摘要：研究了等离子弧淬火工艺参数对45钢表面硬度及摩擦磨损性能的影响。

A set of technological specifications fit for laser surface quenching have been obtained in view of the punching die of T12 steel lamp holder through heat tr-eatment, metallographies analysis and industrial application etc.

针对T_(12)钢灯头冲孔凹模，经过热处理、金相分析检测、工业应用等试验过程，研究总结出一套适于激光表面淬火的工艺规范，使该模具工作寿命平均提高近3倍。

For hard to soften some of the alloy annealed in the quenching after the regular use of high-temperature tempering, so that the appropriate aggregation carbide steel, will reduce the hardness to cut processing of caliche.

对于退火难以软化的某些合金钢，在淬火后常采用高温回火，使钢中碳化物适当聚集，将硬度降低，以利切削加工。

Our products are capable of testing stainless steel sheets, cold-rolled steel sheets, steel strips, steel pipes, tinned steel sheets, galvanized sheet, aluminum alloys, brass, carbides, measuring tools, cutleries, cutting tools, stamped parts and other metal products.

沈阳天星试验仪器有限公司是专业生产便携式硬度计的企业，我们生产的便携式洛氏硬度计、表面洛氏硬度计、韦氏硬度计、里氏硬度计、涡流测厚仪等产品广泛应用于金属热处理、淬火、金属加工等行业，用于测试不锈钢、钢管、冷轧薄钢板、钢带、镀锡板、镀锌板、铝型材、铜管、硬质合金、量具、刃具、刀具、冲压件等产品。

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。