22锻造工艺（22 forging process）.docVIP

22锻造工艺（22 forging process） 1 fill in the blanks: 1. inspection (inspection, including forging forging forging forging the surface quality of the geometry and size of the inspection, inspection, organization of internal defects and forging forging mechanical property test, chemical composition test) etc.. The forming process of 2. open die forging can be roughly divided into (forging stage, filling stage and polishing stage). 3. according to the forming method of the final forming step, the die forging process can be divided into: open die forging, closed die forging, extrusion and top upsetting die forging. 4. the rolling die can (change the form of the billet) to play the role of (distribution of metal) to obtain the shape and size of the near (Rough). The metal deformation during rolling can approximately be regarded as a combination of upsetting and pulling. 5. the main methods of heating forgings are heating (fuel heating) and (electric heating) two major categories. The forging temperature range of 6. steel refers to a temperature interval between the initial forging temperature and the final forging temperature. 7. die outside the circle radius R small, so that the metal through the fillet radius into the mold, to consume more (energy), R is too small, may also (cut metal fiber). The 8. end forging die usually consists of three parts: the body of the mould, the flying edge slot and the jaw. 9. the design principle of the pre forging groove is: the billet formed by pre forging groove, when the final forging groove is formed, the metal (uniform deformation, good filling, the smallest of the resulting flash). 10. the internal defects and the inspection methods of forgings are tested by (ultrasonic) inspection, (low) test, and (forging, fiber, organization) inspection. 11. factors affecting the quality of the process of drawing (feed, reduction, anvil shape and stretching operation effect). 12. the die wall thickness is generally determined according to the die de