New technology of powder metallurgy compaction

New technology of powder metallurgy compaction

"Powder Metallurgy Manufacturer" New Powder Metallurgy Compaction Technology

Powder metallurgy processing and molding industry continues to accelerate the development, because of the good characteristics of powder metallurgy has been widely used, powder metallurgy pressing injection molding technology is very important in the powder metallurgy process. Powder compaction is generally carried out on ordinary mechanical presses or hydraulic presses. What are the new powder compaction technologies? Zhangnwei precision powder metallurgy gear manufacturers share:

1. High speed pressing

High speed pressing adopts hydraulic impact machine, which has many similarities with traditional pressing, but the key is that the pressing speed is 500~1000 times faster than traditional pressing, and the head speed is up to 2~30m/s, so it is suitable for mass production. The hydraulically driven heavy hammer (5~1200kg) can produce a strong shock wave, and within 0.02s, the pressing energy will be transferred to the powder through the die for densification. The quality of the hammer and the speed at impact determine the compaction energy and the degree of densification.

Powder metallurgy gear

2. Warm compaction technology

Warm compaction technology is a technology that adds a new high-temperature lubricant to the mixture, then heats the powder and mold to about 423K for rigid molding, and finally uses the traditional sintering process for sintering. It is the development and extension of ordinary molding technology, and is praised by the international powder metallurgy industry as a new molding technology that "ushers in a new era in the application of ferrous powder metallurgy parts" and "leads to a revolution in powder metallurgy technology".

3. Dynamic magnetic compaction technology

The powder is packed in a conductive container (sheath) and placed in the central cavity of the high strength magnetic field coil. When the capacitor discharges, a high pulse current is passed to the coil within a few microseconds, a magnetic field is formed in the coil cavity, and an induced current is generated in the sheath. The induced current interacts with the applied magnetic field to produce a magnetic force that compresses the sheath from the outside to the inside, so that the powder can be compressed in two dimensions. The whole pressing process is less than 1ms.

4. Flow warm compaction technology

The flow warm compaction technology is based on warm compaction technology and combines the advantages of metal injection molding. By adding an appropriate amount of fine powder and increasing the content of lubricant, the fluidity, filling capacity and formability of mixed powder are greatly improved. This process is to improve the formability of powder materials by adjusting the filling density of powder and the content of lubricant. It is a forming process between metal injection molding and traditional molding.

This is the relevant introduction of the new powder metallurgy pressing forming technology by ZHONGNWEI Precision. Due to the low cost, high efficiency and higher density of the formed products of ZHONGNWEI Precision Powder Metallurgy pressing forming technology. Therefore, the pressing technology is very popular in the powder metallurgy product industry, and has helped many powder metallurgy product enterprises develop rapidly.