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 - PPM

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 - PPM

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 - PPM

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 - ppm

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.
Powder Metallurgy Process - PPM

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.
Powder Metallurgy Process - PPM

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.
Powder Metallurgy Process - PPM

Heat Treatment

Heat treatment is the process of quenching, tempering, carburizing, nitriding, etc., the workpieces to increase their strength of the workpieces.
Powder Metallurgy Process - PPM

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.
Powder Metallurgy Process - PPM

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.
Powder Metallurgy Process - PPM

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.
Powder Metallurgy Process - PPM

Oil impregnation

In oil impregnation, the workpieces will be placed in a vacuum environment under the atmosphere of -72mmHG to evacuate the air in the pores, and oil can be injected into the workpieces according to customer requirements (the viscosity range of 30-80).