回火

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 selection of cooling medium, control of quenching process, as well as tempering treatment was also described.

对淬火介质的选择，淬火过程的控制，以及回火处理也作了介绍。

Quenching cracks can be seen when the temperature is above 1200℃.

在1050℃左右淬火、回火时的力学性能最好。

The influence of quenching and tempering temperature on the microstructures and mechanical properties of W4Mo2Cr4VNb steel was studied.

研究了淬火、回火温度对W4Mo2Cr4VNb钢组织和力学性能的影响。

The production line used by the heat treatment process are: quenching and tempering of the two.

该生产线所使用的热处理工艺有：淬火和回火两种工艺。

All heat treatment by quenching and tempering.

所有萃取和回火的热处理方法。

Secondly, the simulated tempering annealing based random field model of the DTI image is studied.

第二，研究了基于模拟回火退火法的DTI随机场模型。

Reducing the height of trimming cut zone of chain hook screw properly, increasing the final forging temperature, and keeping appropriate clearance between punch and die, using punch with sharp cutting edge can reduce the cutting stress.

适当缩小链钩螺杆锻造时的切边带高度、提高终锻温度、保持凸模与凹模之间适当的间隙、使用锐利刃口凹模都能降低锻造切边应力；降低热处理时的淬火应力，通过回火消除大部分热应力及组织应力，切边带的裂纹便得到有效控制。

Simultaneous heating and quenching with high power medium frequency equipment for parts of long shaft,adopting special induction coil and adjustable induction coil and self tempering ,will improve on medium frequency quenching quality of the parts and raise obviously productivity,thereby cause the enterprise to obtain fine product quality,high productivity and Low production cost.

对长轴类零件采用大功率中频机同时加热表面淬火的方法，配以专用感应圈和伸缩感应圈的应用和自回火的应用，结果表明，可提高零件中频表面淬火质量，并大大提高生产效率，从而使企业在生产中取得高产品质量，高生产效率和低生产成本的极佳效果。

The technology not only guarantees that there are good microstructures of the tempered troostite and sorbite in the wire rod steel, but also makes environmental pollu.

该工艺在保证盘条钢具有良好的回火屈氏体和索氏体组织外，还减少了对环境的污染和对人体的危害。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。