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High Temperature Molybdenum Wire Production Process

High temperature molybdenum wire used in high temperature is not easy to brittle fracture, because of its excellent performance, so it is widely favored by users in high temperature. According to the research data, it is found that the market demand for high temperature molybdenum wire is increasing year by year, and the market prospect is good. Therefore, a reasonable, feasible and economical high temperature molybdenum wire manufacture process becomes more important, which not only improves the performance of molybdenum wire, but also is conducive to its mass production to meet market demand.

To use the same quality raw material of high temperature molybdenum powder, comparing with different production technology, so as to select a reasonable, feasible and economical high temperature molybdenum wire production process. The preparation processes are as follows:

Production process 1: high temperature molybdenum powder - cold isostatic pressing into the bar - intermediate frequency induction furnace sintering – rough rolling for cogging- rotary forging - rough drawing - annealing and other processing.

Production process 2: high temperature molybdenum powder - cold isostatic pressing into the bar - intermediate frequency induction furnace sintering - rotary swaging for cogging - rotary forging - rough drawing - annealing and other processing.

Production process 3: high temperature molybdenum powder - hydraulic machine forming square bar - activated sintering - rough rolling for cogging - rotary forging - rough drawing - annealing and other processing processes.

Production process 4: high temperature molybdenum powder - hydraulic machine forming square bar - activated sintering - rotary swaging for cogging - rotary forging - rough drawing - annealing and other processing processes.

By comparing these four processes found that the production process 1 can produce high quality high temperature wire. For example, the sample bar is processed into φ1.9mm molybdenum wire has the most uniform structure after rolling. And the bar is processed into φ0.6mm wire, after rolling and recrystallization annealing has the most developed exaggerated interlocking grain. At the same time, the sample bar after rolling and other processes can obtain excellent mechanical properties wire. 

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