Powder metallurgy structural parts of electric tools.

Powder metallurgy structural parts are widely used inelectric tools.

Commonly used power tools include electric drills, electric grinders, electric wrenches and electric screwdrivers, electric hammers and impact drills, concrete vibrators, and electric planers.

Application examples of powder metallurgy parts in several electric tools

In order to obtain the highest efficiency and lowest production cost through the application of powder metallurgy parts, electric tool manufacturers first need to determine the following parameters.

1. What parts are powder metallurgy part manufacturing?

2. What are the various functions of these parts?

3. What are their important mechanical properties?

4. What are the production processes that compete with them? How about the production cost?

The powder metal gears used in power tools include spur gears, bevel gears, face gears, pinions, bevel gears, gear sets, and ratchets. Each gear has its own special requirements.

Electric tools also use cams, rods, counterweights, bearings, bearing seats, brush holders, clutches, rotors, cylinder blocks, end covers, blades and chuck jaws. For a variety of different tools, to some extent, all these parts are produced by powder metallurgy processes. The requirements for mechanical properties of these parts are quite different.

The hardness of the powder metallurgy gear manufacturing is very important. The hardness range of the helical cylindrical gear is 25~35HRC, and the hardness range of the other two gears is 30~38HRC. When the hardness of the gear is high, it will wear the pinion on the shaft, and when the hardness of the gear is low, it wears faster.

All powder metallurgy gears can be heat treated after they are sintered and pass the inspection. Therefore, the gears must be inspected for accuracy, and all gears must be immersed in oil before assembly. The cost of powder metallurgy gears is about 45% lower than that of cutting gears.