回火

It is found that the fine tempering sorbite is obtained in condition of 930℃ direct quenching temperature and 640℃ tempering temperature after controlled rolling. The mechanical properties of SPV490 steel plate are above the standard requirement.

结果表明：经奥氏体再结晶区和未再结晶区两阶段结合控制轧制后在线930℃直接淬火、640℃回火，钢板可获得均匀、细小的回火索氏体组织，其综合力学性能均超过标准要求。

Derived from high-temperature tempering tempering sorbite organizations.

高温回火所得组织为回火索氏体。

The test results showed that as steel contained 2%~4% Cu,the structure of quenched and tempered steel was sorbite matrix with dispersed rich copper phase;and as Cu content in steel increased from 2% to 4%,the hardness HRC value of quenched and tempered steel increased from 38 to 48,the antibacteria...

实验结果表明，当钢中含2%~4%Cu时，钢淬回火后的组织为索氏体基体上弥散分布富铜相，当钢中铜含量从2%增加至4%时，淬回火后钢的HRC硬度值从38增加到48，大肠杆菌的杀菌率从42%增加到95%，在5%硫酸中致钝电流和电压减少，使钢易于钝化。

This article analyzes and compares the general heat treatment technics of Q275 steel with the quenching and backfiring technics.

分析并比较了Q275钢普通热处理工艺与锻热淬火+回火工艺，提出采用锻热淬火+回火工艺对钩尾销进行热处理，效果显著。

The influence of the K/Na modificator on structure and performance of high chromium cast iron was investigated. The melting and heat treatment process (hardening at 1000℃ and tempering at 450℃) were also obtained.

考察了K/Na变质剂对高铬铸铁组织和性能的影响，确定了合金的熔炼工艺和热处理工艺，得出最佳的淬火和回火工艺温度（淬火1000℃+450℃回火）。

Overheating can result in overtempered martensite or untempered martensite formations in the base metal.

过热会造成在本体金属中形成过回火马氏体或者欠回火马氏体。

This research applied austempering heat treatment to obtain various microstructures in the matrix of ductile iron and studied their erosion wear behavior. The effects of different impact angle and microstructure on erosion wear rate and morphology wase investigated. Mechanical property evaluation together with SEM analysis was also carried out to correlate the wear behavior observed.

本研究系以球墨铸铁进行沃斯回火热处理，获得不同基地组织的试片，再利用冲蚀磨耗实验来进行各种角度的冲蚀磨耗，配合机械性质测试及扫描式电子显微镜来观察冲蚀表面，探讨沃斯回火热处理对球墨铸铁不同冲蚀磨耗型态与冲击角度的影响。

Mini-hole heat dissipation flame-out device ensures flame out. In tempering process gas check valve instantly cuts off gas supply i

产品名称：焊割炬用气体回火防止器，微孔散热型火焰熄灭装置确保火焰熄灭气体单向阀在回火过程自动将气体源瞬间切断具有自动复位功能可直接连接作业连接在割炬的进气口上使用。

The results show that one step temper embrittlement occurs at 440℃.

利用扫描电镜、透射电镜及俄歇能谱研究了16NiCo钢回火行为，结果表明，该钢在440℃发生第一类回火脆性，断口特征为准解理。

The test results show that the step cooling test for the temper embrittled block of 2.25Cr 1Mo steel can not predict the future susceptibility to temper embrittlement.

结果表明，对已经回火脆化的2.25Cr－1Mo钢试块不适宜用步冷试验来预测其进一步的回火脆化程度。

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