淬火钢

So, in this paper, H13 isused as study object, its quencher and temper technics are studied too.

因此，本文决定以H13钢作为研究对象，并对其进行淬火、回火工艺研究，结果表明，H13钢采用二级盐浴分级淬火，比采用一级盐浴分级淬火能使H13钢获得更大的冲击韧性。

The results show that quenched steel treated at 1000~1040℃ is more reasonable, quenched at 1030℃, tempered at 300~350℃, the microstructures are small uniform martensite, which has high strength and certain toughness; quenched at 1030℃, tempered at 600~650℃, The microstructure of the steel is tempered sorbite which has good mechanical properties.

结果表明：1Cr16Ni4Nb钢在1000~1040℃淬火较合理，在1030℃淬火、300~350℃回火时，组织为均匀细小的回火马氏体，其具有较高的强度和一定的韧性；在1030℃淬火、600~650℃回火时，1Cr16Ni4Nb钢的组织为回火索氏体，其具有较高的综合力学性能。

A steel plate having a tensile strength of at least about 930 MPa (135Ksi), a toughness as measured by Charpy V-notch impact test at least about 120 joules (88 ft-lb), and a microstructure comprising at least about 90 volume percent of a mixture of fine-grained lower bainite and fine-grained lath martensite, wherein at least about 2/3 of said mixture consists of fine-grained lower bainite transformed from unrecrystallized austenite having an average grain size of less than about 10 microns and comprising iron and specified weight percentages of the additives: carbon, silicon, manganese, copper, nickel, niobium, titanium, aluminum, calcium,rare earth metals, and magnesium, is prepared by heating a steel slab to a suitable temperature; reducing the slab to form plate in one or more hot rolling passes (10) in a first temperature range in which austenite recrystallizes; further reducing said plate in one or more hot rolling passes (10) in a second temperature range in which austenite does not recrystallize, quenching (12) said plate to a suitable quench stop temperature (16); and stopping said quenching and allowing said plate to air cool (18) to ambient temperature.

一种钢板，其抗拉强度至少约930MPa135ksi），在－40℃（－40°F）下，采用夏氏V型缺口冲击试验测定的韧性至少约120焦耳（88英尺－磅），并且其显微组织包含至少约90％体积的细晶粒的下贝氏体和细晶粒的板条马氏体的混合物，其中该混合物的至少约2／3由从平均粒径小于约10微米的未再结晶奥氏体转变而来的细晶粒的下贝氏体组成，而且，其中所述的钢板包含铁和特定重量百分比的添加元素：碳、硅、锰、铜、镍、铌、钛、铝、钙、稀土金属和镁，所述钢的制备过程为：将一钢板坯加热至一个适当的温度；在奥氏体可发生再结晶的第一个温度范围内，采用一个或多个热轧道次（10），将所述板坯轧制成板材；在奥氏体不发生再结晶的第二个温度范围，采用一个或多个热轧道次（10）进一步轧制所述板材；将所述板材淬火处理（12）至一个适当的淬火终止温度（16）；停止所述淬火处理并将所述板材空冷（18）至室温。

Through a series of quenching, tempering, tensile testing, low-temperature impact test and metallographic analysis, we ultimately came to the following conclusions:(1) low-carbon alloyed steel 20CrMn2NiMoV quenching at 870℃ and tempering at 200℃, whose structure contains tempered dislocation lath martensite and few small bainite under mixed, has the best obdurability;(2) Carbon Steel 45CrMn2NiMoV quenching at 850℃ and tempering at 620℃, whose structure is sorbitic, has a performance less than that of low-carbon Alloyed steel, but it can also meet the basic design requirements.(3) Mn can substitute for the role of Ni within limited extent.

通过一系列淬火、回火、拉伸试验、低温冲击试验以及金相分析，最终得出以下主要结论：（1）低碳合金钢20CrMn2NiMoV经870℃淬火+200℃回火，得到回火位错型板条马氏体+少量细小下贝氏体的混合组织，具有最佳的强韧性配合；（2）中碳合金钢45CrMn2NiMoV经850℃淬火+620℃回火，得到回火索氏体组织，综合性能虽然不及低碳合金钢，但也能基本满足设计要求；（3）Mn在一定程度上能够替代Ni的作用，适量的Mn和Ni相互配合可以得到最佳的低温韧性，因此&以Mn代Ni&是低温钢材料研究开发中一条可行的适合我国资源状况的合金化思路。

Compared with conventional quenched and tempered process, Direct quenching eliminated off-line reheating and quenching, reduced processing costs and shortened process, in addition, DQ process increase hardenability ,weldability, and mechanical balance by reducing alloy elements.

本文以工业生产的转炉连铸22SiMn2TiB钢为研究对象，以实验室热轧实验为主要研究手段，对直接淬火工艺在不同轧制条件下对钢板微观组织与力学性能的影响进行了研究，同时与再加热淬火工艺进行了比较，探讨了此类钢在低温回火下提高强韧性的可能性和直接淬火工艺的机理。

This cutting tool was tested in dry-cutting area, and its cutting properties were studied to machine quenched steel.

将氮化碳涂层刀具应用于干切削领域，通过对淬火钢的干式切削试验，研究氮化碳涂层刀具的切削加工性能。

Coil is the earlier heat treatment enterprises in our province, after more than 10 years of development, the company from an oil-tempered steel pipeline development to the present six, one of which is the introduction of foreign advanced technology of strip lead to hardening Pipeline fire, a domestic leading position in this formed on the basis of a set of their production process, with strong competitiveness.

是我省较早钢带热处理企业，经过十几年的的发展，公司由原来的一条带钢油淬火回火流水线发展到现在的6条，其中一条是引进国外先进工艺的钢带铅淬火回火流水线，处于国内的领先地位，在这基础上形成了一套自己的生产工艺，具有较强的竞争能力。

Pawls are driven by 3 hardened steel leaf springs.

罗尔斯的驱动3淬火钢钢板弹簧。

This paper presents the Machining Tool geometry of the former flank, the main flank, flank, the main cutting edge, Under the cutting edge tip cutting plane, the main section, the former Kok, horn, wedge angle edge angle, pointed knife, the blade angle, vice horn, Under the Frontier concept, the concept of cutting consumption, and the general circumstances of their choice method for processing slender shaft. cast iron materials, aluminum, stainless steel, rubber materials, plexiglass material, cloth bakelite materials, high temperature alloys, aluminum-magnesium alloy, hardened steel, the typical trapezoidal thread, the thread Triangle, Speaking at the trapezoidal screw thread pitch of the Tool geometry of the selection methods and cutting the amount of cutting fluids reasonable choice.

本文介绍了在机械加工中车刀几何角度中的前刀面、主后刀面、后刀面、主切削刃、副切削刃刀尖切削平面、主截面、前角、后角、楔角主偏角、刀尖角、刃倾角、副后角、副前角的概念、切削用量的概念、以及一般情况下的它们的选择方法，进行加工细长轴、铸铁材料、铝合金、不锈钢、橡胶材料、有机玻璃材料、夹布胶木材料、高温合金、铝镁合金、淬火钢、典型梯形螺纹、三角螺纹、特在螺距的梯形螺纹等的车刀几何角度的选取方法切削用量及切削液的合理选择。

In this auction we are offering this this classic vintage military Swiss Bayonet that is 14" overall in length and features a double-edged 9 1/2" premium polished and hardened steel blade.

在这次拍卖我们提供这本经典的葡萄酒军事瑞士刺刀是14&的整体长度和特点双刃剑9 1 / 2&优质抛光和淬火钢叶片。

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。