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四、复合成形模锻复合成形模锻指的是温、冷(或热、冷,或热、温)组合的成形方法,即先温(或热)成形,再冷整形,我们称为复合成形工艺。用该工艺可扬长避短,优势互补。它充分利用了热锻和冷锻各自的优点:热态下,金属塑性好,成形能力几乎是冷锻的4倍,流变应力是冷锻的1/5～1/3,因此,主要变形过程用热锻完成;而冷锻件的精度高,可达IT8～IT11,重要的尺寸用冷锻最终成形,这样可以得到高精度的零件。
Fourth, composite forming Forging composite forming Forging refers to the warm, cold (or heat, cold, or heat, temperature) a combination of forming method, that is warm (or hot) forming, then cold plastic, we call the composite forming Process. With the technology can Yangzongshukuan, complementary advantages. It makes full use of the advantages of hot forging and cold forging. In hot condition, the metal has good plasticity, the forming ability is almost 4 times that of cold forging, and the flow stress is 1/5 ~ 1/3 of cold forging. Therefore, the main deformation The process is completed by hot forging; while the precision of cold forgings is up to IT8 ~ IT11, and the important dimensions are finally formed by cold forging so that high-precision parts can be obtained.