| 1. | Application and technology of foundry method in permanent mould with sand facing
铁型覆砂铸造工艺及其应用 |
| 2. | Casting solidification simulation of sand faced permanent iron molding technology and its application
铁型覆砂铸造工艺凝固模拟及应用 |
| 3. | The basic principle of this process , its development situation and the application of computer solidification simulation in this process were introduced
笔者介绍铁型覆砂工艺的基本原理、发展情况以及计算机凝固模拟在该工艺上的应用。 |
| 4. | The sand faced - iron mould casting process is a special iron castings production process , according which castings are to he cast in the iron moulds having a thin layer of the resin sand facing in their inner surfaces
摘要铁型覆砂铸造是指在金属型（铁型）内腔覆上一薄层树脂砂，然后采用这种覆砂铁型浇注铸件。 |
| 5. | Since the sand faced - iron mould has high rigidity , it is possible , when used for crankshafts production , to adopt feeder - less foundry method and increase the process yield , as well as increase dimension accuracy of castings and improve surface quality of castings
由于覆砂铁型刚度较高，用于球铁件能实现无冒口铸造，提高工艺出品率，并能提高铸件尺寸精度，改善表面质量。 |
| 6. | In this paper the technolqical principle , furnish and application status of permanent mould with sand facing was introduced . application shows that the technology was suitable for mass production of high quality casting , suchas crankshaft ， valve and cylinder sleeve
介绍了铁型覆砂铸造的工艺原理、工装及生产应用情况，应用表明：该工艺适用于曲轴、阀体、缸套等大批量、高质量的铸件生产。 |
| 7. | The model holds that the metallogenic environment of the lf type is structural reductive space whereas that of the hf type reflects entirely characteristics of sedimentary minerallization , with no evidence of tectonic minerallization
模式表明，贫铁型矿床的成矿环境为相对封闭还原的构造空间；富铁型矿床完整地反映了该类型铅锌矿床沉积成矿特点显著，而断裂等构造对成矿的直接影响相对不显著。 |
| 8. | A comparison of the prospecting model of the hf type with the prediction model of the vms type reveals that their thermal dynamic mechanisms are different : the former is related to basic - ultrabasic rock intrusion , while the latter to acidic rock intrusion
与白银铜矿区域地球化学预测模式相比较，富铁型铅锌矿床中除铁族元素指示基性超基性岩侵入事件外，其他元素均大致相似，两大类矿床形成的初始热动力条件不同。 |
| 9. | In this paper , with the metallogenic series theory as the guide and the geochemical data as the basis , all lead - zinc ore deposits in the region were classified into two sub - series , i . e . , lf type ( with low content of iron group elements ) and hf type ( with high content of iron group elements ) , and a regional geochemical prognostic model was set up by using the logical information method
摘要以成矿系列理论为指导，将区域内的铅锌矿按地球化学特征划分为贫铁型和富铁型2个亚系列，进而用逻辑信息法建立了西秦岭铅锌矿床区域地球化学场预测模式，验证结果较为理想。 |
