| 摘要 |
The invention relates to powder metallurgy and can be used for moulding barrel-like products from metal granules. The technical result provides higher efficiency of the process and yield. The invention is characterized in that an injection mould for moulding barrel-like products comprises top and bottom plates, main and additional female dies, wherein the additional female die is rigidly fixed in the upper plate and mounted in the main die forming a cavity, upper and bottom punches. According to the invention the main female die bottom part accommodates replaceable ring with OD equal to the main female die ID while its ID equals that of additional female die, said replaceable ring is made from material of lower strain resistance sufficient for creation of backpressure in briquetting. |
