This pure α-Al2O3 coating were used to high speed cutting of gray cast iron in our study,for solving the problem that κ-Al2O3 coating or κ-Al2O3 and α-Al2O3 coating couldn't be applicative stably in high speed cutting.
采用一种全新的过渡层工艺,在过渡层上进行Al2O3化学气相沉积涂层,制备了单一α-Al2O3涂层,取代传统的κ-Al2O3涂层或κ-Al2O3和α-Al2O3混合涂层,应用于灰(口)铸铁高速切削加工,解决了传统的κ-Al2O3涂层或者是κ-Al2O3和α-Al2O3混合涂层高速切削中稳定应用的问题。
8%SiC)suggested by multi-factor regression analysis,the wear resistance layers on the surface of HT200 gray cast iron of about 3mm depth is obtained,and its wear resistance is 2.
用该配方可以在灰(口)铸铁HT200表面获得一层3mm左右的耐磨复合层,其耐磨性约为基体试样的2。
The properties of gray cast iron by the low temperature gas N-C-O multi-elements penetrating were studied.
利用自行研制的一种新型低温气体多元共渗技术,在灰(口)铸铁表面进行了气体N、C、O多元共渗。
The study of behavior of graphite phase in the laser hardening layer of gray iron;
珠光体灰(口)铸铁激光硬化层中石墨相行为研究
In order to find a quick and accurate test method for discriminating the nodular iron from the gray iron on the production spot, ultrasonic attenuation tests were conducted on both the nodular iron and gray iron specimens with different thicknesses by adopting the ultrasonic waves with different frequencies.
为了找到快速准确鉴别球墨铸铁件与灰(口)铸铁件的现场检测方法,采用不同频率的超声波对不同厚度的球墨铸铁和灰(口)铸铁试样进行了超声衰减测试,发现灰(口)铸铁件超声衰减明显,而球墨铸铁件超声衰减微乎其微。
Through the single factor test on gray iron added with Cr、Al、Cu respectively,the effect of the three elements on the cast structure and corrosion resistance has been analyzed.
采用单因素试验方法研究了Ｃｒ、Ａｌ、Ｃｕ三元素对灰(口)铸铁组织及耐蚀性的影响，结果表明，分别加入少量的Ｃｒ、Ａｌ、Ｃｕ，对铸态组织有不同的影响，三元素均提高铸铁的耐蚀性，其中Ａｌ的作用最为显著。
The microhardness of nodular cast iron and grey cast iron treated by the technology of low temperature gas multicomponent permeation was studied.
采用低温气体多元共渗处理工艺,对经处理的球墨铸铁和灰(口)铸铁的显微硬度进行研究。
The NiCrBSi powder alloying on the surface of grey cast iron was realized successfully by means of light beam heating.
用NiCrBSi合金粉末对灰(口)铸铁表面实现光束合金化的实验研究表明 ,光束线能量及合金粉末用量是表面合金化区合金化程度的重要决定因素。
The cavitation erosion behavior of TiN, CrN and (Ti,Cr)N hard coatings produced by arc ion plating on the surface of grey cast iron was studied with an ultrasonic cavitation erosion testing apparatus and a scanning electron microscope.
利用磁致伸缩振动空蚀试验装置 ,研究了灰(口)铸铁表面多弧离子镀 Ti N、Cr N及 (Ti,Cr) N硬质膜的抗空蚀性能 。
Influences of Technological Parameters on As-Cast Bainite Grey Iron;
工艺参数对铸态贝氏体灰(口)铸铁的影响
A measuring method taking views of hydrogen behaviours under microscope is applied to study the redistributive and bubbling-up course of the residual diffusible hydrogen in the grey iron weldments welded with both the homogenous and the heterogenous electrodes.
采用显微镜下摄影测氢法，从微观上研究了灰(口)铸铁母材同质焊缝及异质焊缝焊接区扩散氢的分布及其逸出动态过程，说明了由于石墨的储氢及阻碍氢向前扩散的作用，使进入灰(口)铸铁焊接接头热影响区的扩散氢很少，因此，氢对灰(口)铸铁热影响区的冷裂纹倾向影响也小。