淬硬

The laser strengthening technology is an effective means to improve the abrasiveness of the metals.

激光强化技术是有效改变金属材料耐磨性的一种手段，对于半钢材质来说，只要选择的加工工艺参数合理，就可以获得理想的淬硬层组织。

The larger the piece to be hardened, the longer it must be held at furnace temperature.

淬硬的零件越大，在炉温下保持的时间越长。

A new concept that the roll surface can be hardened proportionally according to its abrasion curve by using laser treatment technique was put forward.

提出了一种利用激光表面处理技术对辊面按磨损程度进行等比例强化的概念，即在获得轧辊准确磨损规律的基础上，针对不同部位调整激光工艺参数，在辊面形成合理的淬硬层搭配，达到轧辊表面磨损均匀化、提高轧辊综合使用寿命和降低辊耗的目的。

On the basis of establishing planar cutting model and cutting equation, through analyzing the rigidity of technical system infrequency chart, change cutting coefficient and the angle of cutter etc, emphasis measuring and analyzing hard turning 45 hardened steel the damaged layer of finished surface cutting force the roughness on finished surface and researching on the mechanism of wear and damage of cutter.

在分析二元切削模型和切削方程的基础上，进一步研究了切削变形及其影响机理；通过工艺系统刚性的频谱分析，改变切削用量、刀具几何参数等因素，测量并分析研究了精切淬硬钢的切削力、已加工表面粗糙度、加工硬化及表面残余应力及刀具的磨损情况，基本形成了精加工45~#淬硬钢的切削基础理论。

In alloy steels the kind and amount of alloying element influences only the hardenability (the ability of the workpiece to be hardened to depths) of the steel and does not affect the hardness except in unhardened or partially hardened steels.

除了非淬硬钢或部分淬硬钢外，合金钢中合金元素的种类及含量仅影响钢的淬透性(工件被硬化到深层的能力)而不影响硬度。

The hardened case ununiformity and quenching cracks of H32058 driven ring gear after the medium frequency induction quenching were analyzed.

分析了H32058从动齿圈经中频淬火后出现的淬硬层分布不均和淬火裂纹等缺陷的原因，通过重新设计感应器和反复工艺调试，利用两次中频加热淬火方式实现预热中频淬火，获得了沿齿廓分布的淬硬层。

The hardness of HSS roll was over 66 HRC, the depth of hardened layer excesses 30 mm, the variation of hardness in the roll surface was smaller than 1.5 HRC, and the wear resistance of HSS roll was better than that of high chromium cast iron roll and high nickel chromium indefinite hilled cast iron roll, close to that of powder metallurgy hard alloy roll.

研制出的高速钢轧辊硬度超过66HRC，淬硬层深度超过30mm，辊面硬度差小于1.5HRC，耐磨性优于高铬铸铁和高镍铬无限冷硬铸铁轧辊，接近硬质合金轧辊。

In this paper a series of experimental data were analyzed when chamfered PCBN cutting tools were used to turn the hardened GCr15 bearing steel.The correlations between chamfer angle and cutting forces as well as tool wear were observed.

超硬刀具材料作为近年新兴的刀具材料，越来越为人们所了解和熟悉，其中PCBN刀具在加工淬硬钢和铸铁等材料时表现出了更为优异的性能。

The frequency about 30KHZ small may quench Φ10 about the high accuracy axis,the hard level maintains in 1 mm,may quench ￠250 the diameter macro-axis,also may quench Φ500 about the gear.

淬火类设备 Quenching class equipment 频率在30KHZ左右，小者可淬Φ10左右高精度小轴，淬硬层保持1.5mm以内，可淬Φ250直径大轴，也可淬Φ500左右齿轮。1、汽车配件、摩托车配件的淬火处理。2、机械零件的热处理。

The frequency about 30KHZ small may quench Φ10 about the high accuracy axis,the hard level maintains in 1 mm,may quench ￠250 the diameter macro-axis,also may quench Φ500 about the gear. 1、Quenching of The car fittings,the motorcycle fittings are dealt with 2、Metal parts heat treatment.

淬火类设备 Quenching class equipment 频率在30KHZ左右，小者可淬Φ10左右高精度小轴，淬硬层保持1.5mm以内，可淬Φ250直径大轴，也可淬Φ500左右齿轮。1、汽车配件、摩托车配件的淬火处理，铜陵高频感应加热厂家厂家电话：。2、机械零件的热处理。

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。