Core of large roller cold upsetting die made of ld steel has more ideal hardness, strength, anti wear capacity and impact toughness.
采用LD钢制造大型滚子冷镦模具的模芯，具有较理想的硬度、强度、耐磨性和冲击韧性。
By virtue of modern metallograph analyse technology, the size of grain, hardness and residual stress of bevel gear by closed-die cold forging is studied.
借助现代冶金分析技术对闭塞冷锻行星齿轮的晶粒尺寸、硬度变化和残余应力分布规律进行了研究。
Carburizing and quenching, with high surface hardness, good toughness characteristics, the heart of cold plastic deformation of medium, cutting is good.
经渗碳及淬火后，具有表面硬度高、心部韧性好的特点、冷变形塑性中等，切削加工性好。
The weldability of TCS corrosion resistant stainless steel for railway wagon was investigated by cold cracking sensitivity test, HAZ maximum hardness test and varestraint test.
通过冷裂敏感性试验、焊接热影响区最高硬度试验及可调拘束试验，对新型铁路车辆用TCS耐蚀钢的焊接性进行了深入系统分析。
Studies the effect of the pre-polygonization heat-treatment on the recovery and recrystallization of cold-deformed steel 45 by TEM, tensile test, hardness test and thermal analysis.
本文用电镜观察、拉伸试验、硬度试验、差热分析等方法研究了45钢冷形变后的预多边化处理对随后的回复、再结品过程的影响。
The appreciable increase of the life for cold working dies is attributed to the high hardness and adhesion resistance of the coatings.
冷模具寿命的提高归功于刷镀层的高硬度和良好的抗粘着性能。
The appreciable increase in the life of cold working dies can be attributed to the high hardness and coherence resistance of coatings.
冷模具寿命的提高归功于刷镀层的高硬度和良好的抗粘着性能。
The recrystallization temperature of cold deformed steels and its influencing factors have been studied by measuring hardness values and structure observation.
通过测量硬度和观察组织，确定了几种冷变形钢的再结晶温度及其影响因素。
The effect of preheating treatment process of cold rolls on induction heat quenched structures and the effect of heating temperature and time on structure and hardness have been studied.
研究了轧辊的预备热处理工艺对感应加热淬火组织的影响，感应加热温度和时间对组织和硬度的影响。
Sati is aware of the characteristics of hardness, softness, heat, cold, pressure, motion; it is aware of visible object, sound, odour, flavour, as they appear through the body senses.
正念就是对硬、软、热、冷、压迫和移动的特性的觉知，是对通过身体感官显现的可见对象、声音、气味和味道的觉知。
The hardness, tensile strength and elongation of Ag, cu and Ta, their relationship with the degree of cold work and soften annealing curves of cold-worked Ag, cu and Ta were investigated.
用显微硬度、电子拉伸等试验方法，测定了银、铜、钽的硬度、抗拉强度、延伸率与冷加工变形量的关系及冷加工态银、铜、钽退火软化曲线。
The microstructure, properties and cracks of the fractured cold pressing die made of 45 steel were analyzed by optical microscope, scan electronic microscope and micro-hardness instrument.
采用光学显微镜、扫描电子显微镜、硬度机等对表面已开裂破损45钢冷冲模具的组织、性能和断口进行研究分析。
The effect of heating temperature and thermal-cold recycle times on the hardness of mult-elemental Fe-based hardfacing layer was studied.
研究了热循环温度和循环次数对多元合金铁基堆焊层硬度的影响。
The influences of cold water hardness, temperature, velocity on fouling formation were experimentally studied.
考察了水质硬度、温度、流速对结垢过程的影响。
Studies have shown that (in the same units) the hardness of a cold-worked metal is about three times its yield stress, Y;
研究表明：（在相同的面积上）冷加工材料的硬度大约是它屈服强度的三倍；
When the aluminum content increases, the grain size of cold-rolled annealed panel becomes small, but the hardness, yield strength and tensile strength of stainless steel 439 increase.
随着439不锈钢合金成分中铝含量的增加，冷轧退火板的晶粒尺寸较小，硬度、屈服强度和抗拉强度升高。
Good mechanical strength, hardness and wear resistance of some, cold resistance, water resistance, chemical stability and electrical performance.
有良好的机械强度、硬度和一定的耐磨性、耐寒性、耐水性、化学稳定性及电气性能。
The obvious differentiation of cold-hardness fitted on the early period selection of cold-hardness.
不同抗寒性的分化也适宜于耐寒性状的早期选择。
Strength and hardness increase with increasing amount of cold work and at the same time the remaining ductility and malleability decreases (Figure 6.1).
随着冷处理的增加金属的刚度和强度得到提升，但同时韧性和延展性降低了。
Strength and hardness increase with increasing amount of cold work and at the same time the remaining ductility and malleability decreases (Figure 6.1).
随着冷处理的增加金属的刚度和强度得到提升，但同时韧性和延展性降低了。
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