Manufacturing Process
Powder Metallurgy Process :
The powder metallurgy process existed for more than 100 years, it is one of the general metal-forming processes performed by filling the mixed metal powder into the mold for forming the near-net-shaped products. Over the other metal forming technology, such as metal casting or forging, this process is in the advantages of material utilization, shape complexity, controlled porosity, etc. Nowadays, powder metallurgy is a mature metal process and applied for numerous industries, you can find powdered metal products around your life such as automotive/motor components and household appliances. It also will become an important process for manufacturing lightweight parts in the future trend.
Description
Powder metallurgy, as known as the powdered metal process, processes filling metal powder (iron powder, stainless steel powder, bronze powder, brass powder, etc.) into a forming mold, and the powder is pressed into green parts under a set pressure. And then, the green parts are put into the sintering furnace for sintering, so that the metal particles are combined to achieve a certain mechanical strength. After sintering, vibration de-burring, calibration, turning, other secondary processing, electroplating, and heat treatment can be carried out according to the requirements of the drawings.
Features
- Fabrication of products with intricate shape and miniature tolerance
- The porosity of forming products can be controlled.
- Reproducible large production with lower cost.
- The structure of the crystal is finer and more densified than casting.
- The material utilization reaches more than 95%.
- High-precision production with fast production efficiency.
- High dimensional accuracy with great surfaces
Powder (Material)
We provide various metal powders in compliance with international material standards for blending according to their application, such as MPIF, JIS, E DIN, and the stainless steel of SUS303LSC, SUS316LSC, etc.
Froming (Video)
Forming is the process of pressing the uniformly mixed metal powder into the mold. We will conduct strict random inspections at this process to ensure the integrity of the products
Sintering (Video)
In the sintering process, the workpieces will be made
by heating under the melting point to achieve their structural strength. The
products processed by sintering are generally called sintered bodies.
Calibration
We can provide repressing, sizing, and coining according to the requirement of surface polishing, precision, density, and toughness, the fineness reaches up to 0.01mm.
Tumbling (Video)
With high-frequency vibration, the workpieces are mixed with grinding
stones, steel balls, abrasives, etc., and rolled in rotating to achieve their
surface trimming and polishing.
Ｍachining (Video)
We can offer secondary machining for the products to perform the horizontal holes, threads, Fine grooves, and other shapes that cannot be formed by powder metallurgy.
Heat Treatment
Heat treatment is the process of quenching, tempering, carburizing, nitriding, etc., the workpieces to increase their strength of the workpieces.
Sand Blasting
Sandblasting is to spray steel grit or glass grit to the workpiece with high-pressure air to remove burrs or foreign material and make the surface smooth.
Steam Oxide Treatment
In the steam Oxide Treatment, the workpieces will be placed in a high-temperature environment and react with water vapor to form blue-black iron oxide on the surface for rust resistance and the hardness of the sintered body.
Plating
Electroplating is the process of laying a layer of metal on a conductor using the principle of electrolysis, the most common method of electroplating used for the powdered metal parts are zinc, chemical, and nickel plating to increase oxidation resistance and durability.
