论文部分内容阅读
本文扼要地阐述了旋锤加工钨坯的基本原理和特点,以及对金属组织性能的影响。从理论上分析了旋锤加工制品所受的应力状态和应力应变的特征,旋锤力的变化规律。它们是如何影响产品质量的,从而寻找最佳的变形方式。 文章深入分析了旋锤工艺条件:即加工温度、速度、压缩比三大要素对旋锤产品组织性能的影响、对最终产品质量的影响。同时分析了旋锤设备的正常使用和维护对制品质量的影响,以及如何进行设备的装拆和修理、易损件的更新和维修,它们的损坏将出现哪些质量弊病?对产品质量影响的程度！采取怎样的对策措施予以解决！ 旋锤模是加工的重要工具,文章从模具材料的选择、模具的设计、模具合理形状的修理等因素出发,详细阐述模具几何形状及如何修理,对产品质量的影响。 本文主要总结了旋锤工艺、设备、模具对产品质量影响的实践经验,有的是操作工人多年积累的技术诀窍,是一般书本上所见不到的,对钨丝生产技术有实际的指导意义。 多晶体的钨无论是烧结的或熔炼的,在室温下,即使微小的变形也会脆断。钨的变形则是沿晶体间结晶边界破裂。这是由于室温仅为钨熔化绝对温度的8％左右,以致在变形时是沿方向错乱的原子团较脆弱的区域——沿晶界断裂。只有在1300℃以上的温度,用粉末冶金方法制造出的钨坯（晶?
In this paper, the basic principles and characteristics of the tungsten carbide blanks processing and their effects on the microstructure and properties are briefly introduced. The characteristics of stress state, stress and strain, and the variation rule of the hammer force suffered from the hammer products are theoretically analyzed. How they affect the quality of the product, in order to find the best way to deformation. In this paper, the conditions of the screwdriver are analyzed in detail: the influence of the three factors of processing temperature, speed and compression ratio on the microstructure and properties of the screwdriver and the quality of the final product. At the same time, it analyzes the influence of the normal use and maintenance of the hammer device on the product quality, as well as how to carry out the disassembly and repair of the equipment, the renewal and maintenance of the wearing parts, what quality defects will they damage and the degree of impact on product quality ! How to take countermeasures to solve it! Hammer mold is an important tool for machining. The article elaborates the influence of the mold geometry and how it is repaired on the quality of the mold, starting from the choice of mold material, the design of the mold and the repair of the mold’s reasonable shape. This paper mainly summarizes the practical experience of screwdriver technology, equipment and mold on the product quality, and some is the know-how accumulated by the operating workers for many years, which can not be seen in the general books. It has practical guiding significance for the production technology of tungsten wire. Polycrystalline tungsten, whether sinter or smelt, brittle fractures even at very low temperatures at room temperature. Tungsten deformation is along the crystalline boundary between the crystal rupture. This is due to the fact that room temperature is only about 8% of the absolute melting temperature of tungsten, so that when deformed, it is a more fragile region of atomic disorientation along the grain boundaries - breaking along the grain boundaries. Only in the 1300 ℃ above the temperature, the use of powder metallurgy method to create the tungsten blank (crystal?