| 1. | Gear flame or induction hardening process and its quality control 齿轮火焰及感应淬火工艺及其质量控制 |
| 2. | Methods of measuring case depth for steel hardened by flame or induction hardening process 钢的火焰加热淬火或感应加热淬火硬化层深度的测量方法 |
| 3. | Numerical simulation of 3 - d transient temperature field during continuous yag laser transformation hardening process 激光相变硬化三维瞬态温度场数值模拟 |
| 4. | The non destructive testing ( ndt ) system is primarily a poke yoke device for the induction hardening process 非破坏性试验系统的主体是一个装有轭形冲击线圈用来感应淬火的装置 |
| 5. | The machine equips with big - digmeter screw . that is made by the special hardening process , which posses not only good corrosion resistance and abrasion resistance but also high layout , lower coast of power , and better plastify 带有屏蔽混练段的大直径螺杆,经特殊硬化处理不仅有良好的耐腐蚀性和耐磨性,而且具有高产出、低能耗,塑化好等优点。 |
| 6. | Based on above , the characteristics of hydration hardening process and microstructure of hsc as well as the interfacial layer between cement paste and coarse aggregate are investigated under low water cement ratio , high content superplasticiser and with one kind or more than one kind of mineral materials condition , the reaction mechanisms of different mineral materials are also discussed 研究了不同水胶比、复合缓凝成分高效减水剂及矿物掺合料的掺加方式、掺量对高强混凝土水泥浆体水化放热过程和水泥浆体的水化热、水化放热速率以及最高温升的影响规律。探明了高强混凝土中水泥浆体的水化硬化过程、矿物掺合料之间的相互作用机理。 |
| 7. | When this machine is used for the hardening processing of teeth , teeth will be embrittlement and snap due to its deeper depth of hardening . for this reason , we spend a lot of money to import the impulse hardened machine which can harden the depth 0 . 1mm 0 . 04 " of surface and make the hardness to be more than hrc67 hv900 本公司自行研发的锯研磨机,以高科技的cbn钻石砂轮直接研磨出锯形状form grind ,并由电脑控制精密度,以制造高精密零件的技术,将锯高度差控制在0 . 004 " 0 . 1mm之间,使锯切线不会歪斜。 |
| 8. | The research results on laser hardening of the fibre - cutting roller showed that using laser surface hardening process instead of thermal spraying to strengthen the surface of fibre - cutting roller of 4crl 3 stainless steel is practicable . not only this technique overcame the disadvantage of larger heat distortion by using thermal spraying but also possessed the advantages that the operation is simply and that expense is easy 过丝辊激光表面淬火的研究表明,选取恰当的工艺参数对过丝辊表面采用激光淬火替代传统的热喷涂是切实可行的,该方法不但能够克服热喷涂方法中工件变形大的不足,而且工艺简便、成本低廉,实用性强,具有明显的经济效益和推广应用价值。 |
| 9. | Through strength tests and xrd tests for cemented stone , the paper presents action mechanism of the nanometer materials in the cement hydration and hardening process : pozzolanic effect , filling effect , acceleration action for the cement hydration , and improving action for microstructure . from the four aspects , the modified mechanism of the nanometer silica fume and ordinary silica fume in cement paste are compared . the analysis results show that the particular properties of the nanometer silica fume include particle fineness , crystal structure and surface hydroxy , etc . a serial of laboratory tests are performed to study physical and mechanic properties of the clay with the addition of the nanometer silica fume 结合水泥石强度试验和xrd试验,从火山灰效应、填充效应、水泥水化促进作用和微结构改善作用等方面探讨了三种纳米矿粉在水泥水化硬化过程中的作用机理;从这四个方面出发,对比分析了纳米硅粉和普通硅粉作用机理的异同点,分析表明,纳米硅粉的优异特性主要表现为颗粒细度、晶体结构、表面羟基等特性。 |
| 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。 |