回火

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。

After tempering at 700℃, bainitic ferrite laths started to coarsen. The grain boundary characteristics and effective grain size of ULCB steels can be measured by EBSD technique.

晶界特征结果显示，轧态和回火态组织均存在大量低能量小角度晶界和低Σ值重位点阵晶界。

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。

This factory main product has each kind of specification the pot galvanize, the refacing steel wire, the steel stranded wire, the tempering tire embryo circle steel wire, the aluminum twisted wire steel core, the optical cable steel wire, the fishing net steel wire, models the tube steel wire, Awning the steel wire and each kind of commodity steel wire, the iron wire, the steel belt and so on,The year synthesis productivity 20,000 tons, the product mainly sells to provinces and cities and so on Shandong, Liaoning, Hebei, Jiangsu, Tianjin, and exports country and the area and so on the Southeast Asia, US, West Africa, Japan, South Korea, Middle East.

本厂主要产品有各种规格的热镀锌、光面钢丝绳、钢绞线、回火轮胎胎圈钢丝、铝绞线钢芯、光缆钢丝、渔网钢丝、塑管钢丝、大棚钢丝及各种商品钢丝、铁丝、钢带等，年综合生产能力20000吨，产品主要销往山东、辽宁、河北、江苏、天津等省市，并出口东南亚、美国、西非、日本、韩国、中东等国家和地区。

It was reheated to 780℃ and oil quenched for tempering at low temperature (200℃).

牙轮的材料为20Ni4Mo，热处理工艺为气体渗碳再进行780℃淬火＋低温回火。

Specializing in the production of various high and medium pressure cylinder valves, pipeline valves, cryogenic storage tanks, low temperature cut-off valves, cryogenic liquid carburetor, gas pressure reducer, gas automatically switch boxes, concentrated gas installations, gas mixtures, and tempering to prevent devices, gas terminal box, automatic ignition, flame cutting torch, gas cylinder (seamless, welding, acetylene, liquefied petroleum, and natural gas) detection equipment and other products.

专业生产各种高中压气瓶阀门，管路阀门，低温储罐，低温截止阀门，低温液体汽化器，气体减压器，气体自动切换箱，集中供气装置，气体混配器，回火防止器，气体终端箱，自动点火装置，火焰割炬，气瓶（无缝，焊接，乙炔，液化石油器，天然气）检测成套设备等系列产品。

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。

SY-10 - 3 oil bath heaters, mainly for laboratory, industrial and mining enterprises, and scientific research units for metal parts oil bath temper when dealing with low-temperature heating.

SY-10-3油浴炉，主要供实验室、工矿企业、科研等单位作金属零件油浴回火处理时低温加热用。

The company has a bead wire plant production standards, the domestic leading level of high-automatic production line, reaching an annual output of temper bead wire production capacity of 55,000 tons and has matched the testing equipment and laboratory equipment.

目前公司已拥有胎圈钢丝生产标准厂房、国内领先水平的高自动化生产线，达到了年产回火胎圈钢丝5.5万吨的生产能力，并拥有相配套的检测设备和实验设备。

If to hangs the clothes rack stalloyspring clip tempering heat treatment furnace temperature uniformity to reach ±1℃.

如对挂衣架薄钢片弹簧夹回火热处理炉温均匀性达±1℃。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷