| 1. | Methods of measurement of total or effective thickness of thin surface - hardened layers in steel
钢表面淬火薄层的总厚度或实际厚度测量方法 |
| 2. | Determination of total or effective thickness of thin surface hardened layers of steel parts
钢件薄表面总硬化层深度或有效硬化层深度的测定 |
| 3. | Meanwhile , the fracture was accelerated due to the uneven surface hardness and the unreasonable distribution of the hardening layer on the crankshaft , and the bad lubrication condition in service
同时轴左颈表面硬度不均匀、淬硬层分布不甚合理，工作过程中润滑条件差，加速了曲轴的断裂。 |
| 4. | Moreover , it showed that the linearity rising relations were existed between the laser power and the thickness of hardening layer , and the linearity negative rising relations between the scanning velocity and peak rigidity
此外，结果还表明激光功率与淬硬层厚度成线性增长，而扫描速度与峰值硬度成线性负增长关系。 |
| 5. | Ferrous metals , non - ferrous metals , ic thin sections , coatings , ply - metals ; glass , ceramics , agate , precious stones ; hardness testing such as that on the depth and the trapezium of the carbonized layers and quench hardened layers
黑色金属、有色金属、 ic薄片、层压金属、表面涂层；玻璃、陶瓷、玛瑙、宝石等；炭化层和淬火硬化层的深度及梯度的硬度测试。 |
| 6. | I . investigation on laser surface hardening for metal materials in this work , the effect of the process parameters in laser surface hardening on the properties and surface feature of the hardened layer was studied
一、金属材料激光表面硬化技术研究。研究了激光表面淬火工艺参数和硬化层性能、强化效果之间的关系，对大面积激光淬火技术的基础理论及搭接方法对组织性能的影响规律进行了探讨。 |
| 7. | At present an important subject is researched on prediction methods of the initiation life of rolling / sliding contact fatigue of surface hardening layer based on shakedown theories under cycle contact loading for the strategies of applications of contact element , such as gears , bearings , and railroad rails
接触体表面强化(喷丸、涂层)层的疲劳裂纹萌生寿命的研究，是当前齿轮、轴承等接触件失效分析中的前沿课题。它具有重要而广泛的工程背景。 |
| 8. | The action of overlapping manner on the microstructure and properties of the hardened layer was analyzed and some fundamentals were discussed . systemic experiments and laser processing of the mould - roller used in packaging machine , the screen - changers used in plastic extruder , the fiber - cutting roller used in chemical plant and the rail used for railway were accomplished . furthermore , the technique of laser hardening for the component parts was obtained and some key technologic problems were successfully solved
并结合工业应用，对包装机械用模切辊、挤塑机换网器、化工行业用过丝辊和铁路钢轨等的激光表面强化技术进行了系统研究，获得了对这些零部件进行激光表面强化的成熟的工艺，解决了这些零部件激光表面强化过程中的关键技术。 |
| 9. | Considering different microstructures and properties of metal of hardened layer and the core of back - up roller , the distributions of shear stress below surface and the contact stress between work roller and back - up roller of a four - high - mill were simulated with nonlinear fem
摘要考虑轧辊表面淬硬层与其心部金属材料组织性能的差别，采用非线性有限元方法对四辊轧机的工作辊与支撑辊间接触应力及辊内剪应力分布进行模拟，并将模拟结果与传统强度校核方法进行了对比分析，研究了轧辊淬硬层厚度对辊间接触应力的影响规律。 |
| 10. | Abstract : in this paper , the laser transformation hardening ( lth ) system which used for die and mould and laser processing methods are introduced . the relationship between depth of hardening layer , wear resistance properties and laser hardening processing parameters are dicussed . the results show that die ' s service life can be improved by using lth technology
文摘:介绍了用于模具表面的激光强化加工系统和激光强化工艺方法，讨论了激光强化模具表面的硬化层深度和耐磨性能与激光强化工艺参数之间的关系，采用激光强化技术能大幅度提高模具的使用寿命。 |
