郑州建设中心城市规划:帮帮忙 翻译3

来源:百度文库 编辑:神马品牌网 时间:2024/04/25 09:52:13
Each material has to be forged within its specific temperature range. The lower limit of the temperature range refers to the recrystallization temperature. The upper limit is determined by oxidation, coarse grain formation, and possible phase transformation. Within the suitable forming temperature range the yield stress Kf changes considerably. By heating the metallic work piece the yield stress is lowered while the necessary forming force and the needed forming work is also reduced.
High-grade aluminum is suitable for forging stock. If a higher strength is required, so-called naturally hardened wrought alloys like AlMg5 should be used for forging. For hot forging, wrought alloys such as AlMgSi or AlCuMg can be used; these are alloys that are applied in a hardened condition.

各材料必须被伪造在它的具体温度范围之内。温度范围的低限提到再结晶温度。上限由氧化作用、粗面形成, 和可能的阶段变革确定。在适当的形成的温度范围之内屈服应力Kf 可观地改变。由加热金属工作编结屈服应力被降下当必要的形成的力量和需要的形成的工作并且被减少。高等级铝是适当的为锻件股票。如果更高的强度必需, 所谓的自然地被硬化的加工的合金如AlMg5 应该被使用为锻件。为热的锻件, 加工的合金譬如AlMgSi 或AlCuMg 可能被使用; 这些是被应用在一个被硬化的情况的合金。