合金钢

Through the contrast cutting test of broaching the internal spiral keyslot of high strength alloy steel workpiece used broaches with and without coatings, the wear properties of broaches and the effect of re polishing rake face on cutting properties of broaches and the workpiece surface roughness are studied.

通过这两种涂层拉刀与未涂层拉刀的对比切削试验，研究了加工高强度合金钢内孔螺旋键槽时刀片的磨损性能及重磨前刀面对刀具切削性能和加工表面粗糙度的影响，并分析了提高涂层刀具寿命的机

All of the parts made from high quality alloyed steel, and processed through carbonizing and quenching or improving quality.

另部件全部采用优质合金钢制造，并经渗碳淬火或调质处理具有承载能力强及使用寿命长等特点。

Chromium debases the corrosion rate of steel in seawater at initial stage.

含铬低合金钢在海水中短期浸泡的耐蚀性比碳钢好，长期浸泡的耐蚀性比碳钢差。

An ultra-high strength, weldable, low alloy steel with excellent cryogenic temperature toughness in the base plate and in the heat affected zone when welded, having a tensile strength greater than 830 MPa (120 ksi) and a micro-laminate microstructure comprising austenite film layers and fine-grained martensite/lower bainite laths, is prepared by heating a steel slab comprising iron and specified weight percentages of some or all of the additives carbon, manganese, nickel, nitrogen, copper, chromium, molybdenum, silicon, niobium, vanadium, titanium, aluminum, and boron; reducing the slab to form plate in one or more passes in a temperature range in which austenite recrystallizes; finish rolling the plate in one or more passes in a temperature range below the austenite recrystallization temperature and above the Ar3 transformation temperature; quenching the finish rolled plate to a suitable Quench Stop Temperature; stopping the quenching; and either, for a period of time, holding the plate substantially isothermally at the QST or slow-cooling the plate before air cooling, or simply air cooling the plate to ambient temperature.

在基体板以及焊接时的热影响区处的低温韧性优异的超高强度、可焊接、低合金钢具有高于830MPa（120ksi）的抗拉强度，并且具有包含奥氏体薄膜层和细晶粒的马氏体／下贝氏体板条的显微层状组织，所述钢的制备过程为：加热含有铁以及特定重量百分比的添加元素的钢坯，所述添加元素为碳，锰，镍，氮，铜，铬，钼，硅，铌，钒，钛，铝，以及硼中的一些或全部；在奥氏体可发生再结晶的温度范围内，采用一个或多个道次，将所述钢坯轧制成板材；在低于奥氏体再结晶温度但高于Ar 3 转变点的温度下，采用一个或多个道次对所述板材进行终轧；将所述终轧板材淬火至一适当淬火终止温度；停止所述淬火；或者在空冷前在QST点基本等温保持所述板材一段时间，或者对所述板材进行缓慢冷却，或者只是简单地将所述板材空冷至室温。

7 Preheating shall be carried out for carbon and low alloy steel welding where required.

在进行碳钢及低合金钢的焊接时应进行预热。

All deformed material must be removed before refinishing; deformed high-strength steel alloy components must not be straightened.

在涂层之前，所有变形的材料必须去除，不得自行改直变形后的高强度合金钢部件继续使用。

Most can be attributed to a lack of familiarity with high-strength alloy steels.

损伤的大多数原因是由于缺乏对高强度合金钢的认识。

Because of their improved physical properties they are used commercially in many ways not possible with carbon steels.

由于 合金钢改善的物理性能，它们被大量使用在许多碳钢不适用的地方。

The dynamical processes of the nucleation and propagation of stress corrosion cracking of four low alloy steels with a wide range of tensile strengths in aqueous media with various polarization conditions, in a K_2Cr_2O_7 inhibitor solution and in some organic solvent such as acetone and alcohol were traced with an optical microscope.

用抛光的恒位移试样跟踪观察了具有广泛拉伸强度范围的四种低合金钢在各种水溶液中(高纯水、阳极极化和阴极极化下的水溶液，0.1NK_2Cr_2O_7水溶液)以及含痕量水的有机溶剂中应力腐蚀裂纹产生和扩展的动态过程。

Our company is specializing in the production of alloy steel hotbelt, excellent cold-rolled steel band, in the wide strip of large enterprises.

本公司是专业生产热镀铝锌合金钢带、冷轧优特钢带、中宽板带的大型企业。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。