The difference between powder metallurgy and die casting

The difference between powder metallurgy and die casting

I believe everyone knows powder metallurgy, so what is the difference between powder metallurgy and die casting? The following is the share of zhongwei precision editor.

1. Very high strength. The tensile strength of some iron-based sintered alloys is more than three times higher than the maximum strength of die-casting alloys.

2. High wear resistance and high antifriction performance, which can be solved by iron-based and copper-based sintered alloys containing lubricating oil.

3. High operating temperature, which can be solved by iron-based and copper-based sintered alloys.

4. Corrosion resistance, copper base sintered alloy and sintered stainless steel can meet the requirements.

Between powder metallurgy and die-casting, zinc die-casting may be a substitute for iron-based powder metallurgy products under the condition that the service temperature is not higher than 65 ℃ and the medium strength is required. The two processes are similar in terms of dimensional accuracy and machining requirements. However, for tools and processing costs, powder metallurgy is usually more advantageous.

Types and application fields of powder metallurgy parts

In recent years, powder metallurgy technology has been applied in the fields of automobile, consumer electronics, mechanical equipment, communications, hardware tools and even aviation, which also shows the wide application of powder metallurgy technology and its importance in industry. Next, Minxin Powder Metallurgy will introduce the types and application fields of powder metallurgy parts:

1. Structural parts

Gears and various stressed parts made of copper, iron, copper alloy, aluminum alloy, etc.

Sintered metal oil-bearing. Iron base and copper base porous bearings with porosity of 15%~25% are filled with lubricating oil.

Copper back sintered alloy bearing. The first layer is steel back, the second layer is sintered copper aluminum alloy, DU, DX bearings, etc.

Application of structural parts: automobiles, machine tools, agricultural machinery, textile machinery, instruments, sewing machines, electric tools, internal combustion engines, railway vehicles, metallurgical machinery, tape recorders, video recorders, micro-motors, etc.

Powder metallurgy gear

2. Friction parts

Clutch plate or brake band made of steel back and iron-based or copper-based powder composition

Application of friction parts: friction components on automobiles, aircraft, tanks, engineering machinery, machine tools and power machinery.

3. Filter elements and other porous materials

Filter element. Cup-shaped, conical, cylindrical and rod-shaped products made of spherical bronze, nickel, iron, stainless steel and other metal powders with evenly distributed pores.

Quenched material. There are bars, strips and tubular products with porosity of 50% made of nickel, nickel-chromium alloy, stainless steel and other corrosion-resistant materials.

Fiber metal products. High porosity (up to 80%) products made of fine metal fibers.

Application of filter elements and other porous materials: used to filter various gases and liquids in chemical industry, machine tools, aircraft, automobiles, internal combustion engines, etc., used as porous metal filters in fluidic elements, used as porous quenching elements, sound absorption plates in aircraft, and used as filter elements for special purposes.

To sum up, the difference between the two is shared here. I hope this article will help you. If you need more relevant information, please come to zhongwei for precise understanding. We will have professionals to answer for you.