Powder Metallurgy Applications in Power Tools

Power tools make everyday work tasks a lot easier.

Today, power tools are moving towards being compact, lightweight, and safe. This naturally goes hand in hand with precision parts.

Powder metallurgy parts are the perfect choice.

Let me introduce you to the powder metallurgy applications in power tools.

Electric Tools

Lawn Mower

In home gardening, you most likely need a lawn mower. But did you know how many PM parts in a lawn mower?

Lawn Mower Clutch

The lawn mower clutch is what connects and disconnects the engine from the blade. It helps control the mowing process and can stop the blade without shutting down the engine. Powder metallurgy can produce most lawn mower clutch parts in a cost-effective manner.

Lawn Mower Clutch

Lawn Mower Blade Adapter

Lawn mower blade adapters are applied to connect the blade to the mower motor shaft. The blade adapters need to withstand the high stress and impact of mowing and resist corrosion. Blade adapters are manufactured from powder metallurgy with high production rates and good performance.

Lawn Mower Blade Adapter

Electric Chain Saw

Electric chain saw gears transfer power from the motor to the chain. They help the chain move at a constant speed, allowing for smooth and efficient cutting.

Powder metallurgy allows for the high precision required of these gears to make it run smoothly.

Reciprocating Saws

The reciprocating saw spherical bearing is the component that supports the movement of the saw. It is particularly important in applications involving rotation and angular motion.

Powder metallurgy bearings have the characteristic of self-lubrication after oil impregnation process. This is referred to as oil-impregnated bearings.

Electric Screwdrivers

Electric screwdrivers can easily turn screws, which is inseparable from some sintered parts.

Electric screwdriver double gear helps to adjust the speed and torque to adjust to different task requirements.

Planetary gears are also commonly utilized in electric screwdrivers. It is small in size, high in precision, and has high force transmission efficiency. Planetary gears can provide a variety of torque and speed settings.

Sintered Planetary Gear MPG001-1

Nail guns

Nail gun is a power tool that drives nails into walls or panels.

According to different power mechanisms, nail guns are divided into electric nail guns, pneumatic nail guns, and gas nail guns.

There are many powder metal parts in nail guns, such as:

  • gears
  • cams
  • connecting shafts

Electric Drills

Bevel gears are used to change the direction of the drive in power tools. Therefore, bevel gears are vital when the drive needs to be redirected at a 90-degree angle. A typical example is an electric drill.

Sintered Bevel Gear MBG001-4

Pneumatic Tool

Bicycle Pump

Bicycle pump works by manually compressing air and forcing it into the bicycle tire. Its gears and dials can be made by powder metallurgy process.

Angle Grinder

Angle grinders are a great choice when you need to cut, grind, and brush metal and stone. Electric grinders are suitable for heavy-duty jobs. For lighter jobs that require higher precision, pneumatic grinders are a better choice.

Angle grinder gears and angle grinder flanges are produced using powder metallurgy, which can effectively reduce costs. This is due to the rapid pressing of PM and better material utilization.

Angle grinder flange nuts are special parts that fix the grinding or cutting disc to the angle grinder spindle. These nuts are very important for the safe and efficient operation of the tool. In addition, the bevel gears on angle grinders are also mostly manufactured by sintering.

Powder Metallurgy Diamond Tools

Diamond has good wear resistance, high hardness, and high thermal conductivity, as well as sharp edges. Therefore, it is often utilized to make cutting and drilling tools, as well as grinding tools.

Sawing

Powder metallurgy diamond tools are ideal for cutting granite, marble, asphalt roads, and brick walls. According to the cutting types, there are three types:

  • Circular sawing
  • Frame sawing
  • Wire sawing Drilling

Diamond cutting wheels have high cutting accuracy and are often used for precision grooving and cutting.

Because of its sharp edge, high cutting efficiency and reduced secondary processing.

Drilling

Diamond drills are highly efficient drilling tools with high strength and wear resistance

Commonly used in the following areas:

  • Decorative stone, concrete, asphalt, brickwork
  • In heavy reinforced concrete structures
  • Exploration drilling

Grinding and Polishing

Metal bond diamond grinding wheels are made of diamond powder, alloy powder or metal powder. We typically manufacture these grinding wheels by powder metallurgy process, which includes mixing, pressing and sintering.

Diamond grinding wheels are widely applied in grinding automotive glass, ceramics, magnetic semiconductor materials, tungsten carbide, etc.

Sintered diamond grinding wheels has these benefits:

  • High bonding strength
  • Long service life
  • Good shock resistance

Metal Bonded Diamond Grinding Wheel

Diamond tools are also  employed to cut concrete and brickwork to lay cables. Workers also use diamond tools to groove the surfaces of roads and bridges to reduce the risk of aquaplaning in wet weather.

FAQ

1.  What are the Advantages of Powder Metallurgy Diamond Tools?

Compared with traditional tools, powder metallurgy diamond tools have these advantages:

  • High cutting efficiency,
  • Better wear resistance
  • Longer service life.

2. What Factors should be Considered when Producing Powder Metallurgy Diamond Tools?

As we all know, the hardness of diamond powder is very high. During the compacting process, if the pressure is too high, it will cause serious damage to the mold. Therefore, the pressure during molding is generally below 200Mpa. The final density of the product is achieved through sintering.

In addition, the quality of diamond tools is also related to the following factors:

  • Diamond powder particle size
  • Particle size distribution
  • Type of metal substrate
  • Diamond particle concentration
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