渗碳

The present company yearly produces the resistance furnace, the trolley electric stove, the well type electric stove, the box-type electric stove, the annealing electric stove, the tempering electric stove, to quench the electric stove, the gas nitriding electric stove, the gas carburizing electric stove, industry electric stove nearly thousand and so on salt bath, nitre salt stove, the proprietary product trolley electric stove and the forvacuum protective atmosphere electric stove has exported Japan, the US, Indonesia, Singapore, Thailand and so on many countries.

目前公司年产电阻炉、台车电炉、井式电炉、箱式电炉、退火电炉、回火电炉、淬火电炉、气体氮化电炉、气体渗碳电炉，盐浴炉、硝盐炉等工业电炉近千台，其中专利产品台车电炉和预抽真空保护气氛电炉已出口日本、美国、印尼、新加坡、泰国等许多国家。

Based on a nonclassical theory of plasticity and the continuum damage mechanics,a damage constitutive equation is obtained for the ferrite phase with the damage evolution law for mixed hardening materials from an ellipsoidal void model under particular coordinates,where the void shape variation is considered.

基于非经典塑性理论和连续介质损伤力学，利用在一个特殊坐标系下基于椭球形孔洞模型得到的可考虑孔洞形状变化混合强化材料的损伤演化率得到了铁素体相的损伤本构方程，通过混合物理论利用铁素体和渗碳体相各自本构关系并考虑其几何特征得到了珠光体团的损伤本构模型。

Hydrogen embrittlement fracture of 20CrMnMo steel center block carburized was analyzed in this paper.

对中心楔块渗碳导致的氢脆断裂现象进行了分析研究。

The fundamental is applying surface alloying by plasma technique and then carburizing, forming the surface HSS.

其形成机理是通过在廉价的金属材料表面，渗入合金元素W、Mo、Cr、V、Ti、Co等，然后再进行渗碳，使表面成分达到高速钢的基本要求。

In this paper, a new technology of laser transformation hardening which could replace the present method of gear case hardening is introduced. Its significant and economic value are analyzed. The key techniques of laser transformation hardening gear , such as surface pretreatment coating and its methods, laser scanning pattern, are discussed in detail.

通过分析可替代常规齿轮渗碳淬火的激光齿面淬火新技术研究的意义及经济价值，着重讨论了齿面激光淬火的关键技术--表面预处理涂层与方法、激光扫描方式。

In an identical plant, the graphitization and carbonization of both fiber surface and inside are carried out simultaneously.

本发明具有在一套设备内同时实现石墨化和纤维表面及内部的渗碳，工艺简单，得到高强度和高模量的石墨化碳纤维的优点。

Lathe Machining can realize automation or semiautomation with 2300mm of the maximum processing diameter. In addition, the processing range has been enlarged and processing precision has been upgraded for adding the heating-treatment shaft annealing furnace, carburizing furnace, handspike annealing line and quenching line with protected gas. Through technological reconstruction and equipment renewing, the grinding processing ability has been strengthened. As well, casting copper in cage workshop has realized melting by electric furnace.

车加工已实现自动化或半自动化，最大加工直径可达2300毫米，现已形成月产2000万元产值的能力，热处理在原有的基础上增加了井式退火炉，井式渗碳炉，推杆退火线和有保护气体的淬火线，磨加工经过技术改造和设备更新，使加工能力得到了增强，加工范围得到了扩大，加工精度得到了升级，保持架车间的铸铜实现了电炉化熔化，从而打破了保持架生产能力不足，依靠外协的局面。

Carburizing is one of the most widely used chemical heat treatment in mechanical industry.

渗碳是机械制造业中应用最广泛的一种化学热处理工艺。

For hypereutectoid steel, it can reduce the secondary cementite, and to avoid continuous mesh, do organization preparation for diffusion annealing.

对于过共析钢可减少二次渗碳体量，并使其不形成连续网状，为球化退火作组织准备。

The effects of Si on the grain boundary structure and mechanical properties of hypereutectoid Mn steels austenitized at 950℃ and isothemially transformed at 560℃were studied by means of SEM and TEM.

本文用SEM，TEM研究了Si对过共析锰钢经950℃奥氏体化和560℃等温处理后的组织及力学性能的影响结果表明，Si提高冲击韧性和延伸率，抑制先共析渗碳体在奥氏体晶界呈连续网状析出，并促进在过共析钢中晶界铁素体的形成。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。