Improve the Longevity of Fasteners through Sintered Washers

There are a lot of processes that can be used to create durable and long-lasting parts and products. Aside from various processes, a wide array of materials is also available to generate these things.

But one process that has been gaining popularity for the past few years is known as the powder metallurgy process. This specific process entails the use of metal powders to create different parts and products. With metal powders, the yield losses in manufacture are expected to be reduced significantly. They can also help produce parts and products without spending a lot of money.

Understanding Metal Powders

Metal powders are metals that have been divided or powdered, boasting particle sizes between 5 to 200 µm. Some notable material sources of metal powders include aluminium, bronze, chromium, cobalt, iron, and silicon. These materials are deemed to be very helpful in generating products that are used for chemical processes, magnetic composites, surface coatings, welding, and others.

There are four types of metal powders that one can choose from. One of these types is atomised. Atomised metal powders are created by detaching molten metal into minuscule droplets and freezing them to make them solid. Another type of metal powders is blended. Blended metal powders are metal powders that have been crystallised atomically. The crystallisation process then generates a compound that provides metal powder with reputable strength.

Two other types of metal powders are milled and precipitated. Milled raw metal materials are metal powders that are processed by milling machines. Precipitated metal powders, ultimately, are generated out of electrolysis and are often made from copper and magnesium. They have accurate particle sizes and respectable purity levels.

Metal Powders Characteristics

When determining the perfect metal powders for specific applications, there are certain characteristics that must be considered. Some of these characteristics are as follows:

• Apparent Density: Somehow related to particle size, apparent density is determined as the overall density of the metal powders that exclude open pores. It is often defined as the ratio of volume to weight of the metal powder mixture.
• Particle size: The particle size of metal powders can affect their control of porosity, compressibility, and amount of shrinkage. With the right particle size, sintered parts and products are expected to have a uniform and smooth spread of materials.
• Particle shape: The particle shape of metal powders, alternatively, is determined by the method of their creation. Some examples of particle shape of metal powders include special nodular, irregular, angular, and dendritic. This characteristic directly affects the flow quality of metal powders. Metal powders that come in spherical shape can be processed more efficiently.
• Porosity: The overall strength of sintered parts and products can be influenced by the porosity of the metal powders. Some applications require a high level of porosity to effectively maintain the mechanical strength of final parts and products.

To know more about metal powders and sintered products, feel free to reach us at PM Distributors.

Machines are typically comprised of elements that allow them to work optimally. One of the elements that can be found in a lot of machines is bearing. A bearing is a hardware element that can restrict the relative motion of a machine to solely its desired motion. It is likewise designed to support the rotating shaft inside the machine and minimise the friction between its moving parts.

Even though bearings can be grouped into various types, they all boast the same core functionalities that can be useful for different industries. The main difference among them is that they work on varying principles. One known type of bearing is the cylindrical roller bearing.

Design of Cylindrical Roller Bearings

Cylindrical roller bearings mainly utilise cylinders as their rolling element, as opposed to balls and other similar components. The cylinders of these bearings separate their inner and outer rings, allowing them to reduce the overall frictional force between both rings. Typically, the number of cylinders that a cylindrical roller bearing possesses may vary. But given the capability of the cylinders, bearings that possess a high quantity of these components usually gain significant performance improvements.

These bearings can be generated out of many materials. Some of these materials include alloy steel and pressed steel. These materials often provide bearings with the needed durability and longevity for them to work optimally.

But apart from these materials, cylindrical roller bearings can also be created out of sintered metal. Bearings made from sintered metal often possess notable strength, electrical conductivity, thermal conductivity, and reduced porosity. Those made from sintered metal are often utilised by many industries due to their aforementioned qualities.

Cylindrical Roller Bearing Variations

The general design and materials of cylindrical roller bearings allow them to possess a greater radial load capacity. They can likewise sustain faster speeds compared to other bearing types.

Cylindrical roller bearings can be further grouped into three variations. These variations include single row cylindrical roller bearings, double row cylindrical roller bearings, and multi-row cylindrical bearings. Single row cylindrical roller bearings possess a single set of an inner and outer ring and a single set of rollers and a cage. These bearings are separable, allowing them to be mounted and dismounted easily.

Double row ones, alternatively, possess two sets of rings, rollers, and a cage. They are used in precision machines due to their remarkable accuracy, carrying capacity, and augmented strength. Ultimately, multi-row cylindrical bearings feature high carrying capacity with reduced performance. Both double row and multi-row cylindrical roller bearings can offer better radial load capacity than the single row ones. They can likewise transfer axial loads in a single direction.

Notable Applications of the Bearing

The radial load capacity of the cylindrical roller bearings as well as their fast speeds allow them to be utilised in a lot of machines. Some of these machines include gearboxes, wind turbines, electric motors, pumps, steel mills, motorcycles, railways, and machine tools.

To purchase sintered cylindrical roller bearings, feel free to contact us at PM Distributors.

Many equipment pieces, devices, and other products today are often comprised of different metal components. Subsequently, these metal components are made from various processes, which allow them to boast different characteristics and qualities.

Some of these metal components can be made from the powder metallurgy process. Others, alternatively, can be processed out of forging or die casting methods. What is unique about the powder metallurgy process is that it can boast numerous benefits that other processes do not manifest.

Sintered Metal Components

Sintered metal components are parts that are processed through powder metallurgy. Powder metallurgy generally covers processes that allow metal powders to be converted into useful materials and components. Through these processes, a significant amount of yield losses in manufacture can be minimised. Additionally, the whole operation costs can be cut through powder metallurgy due to reduced yield losses, less secondary machining, and lower labour needs.

As for the sintered metal components, they can easily provide tons of advantages to different industries. For one, these types of components are capable of being exposed to high temperature and extreme elements. Their electrical and magnetic properties, density, toughness, hardness, and damping can likewise be controlled effectively. Significant improvements over their tensile strength can also be seen once they are processed with high-temperature sintering. Ultimately, despite having complex and intricate details, these components can still be produced in huge quantity in just a short amount of time.

Some limitations of sintered metal components, however, include their overall size and part design. They can also be weaker when compared to forged or mould components.

Other Types of Components

Metal components can also be made from forging and die casting methods. The forging method can effectively create metal components that have different shapes and sizes. Components out of the forging process are likewise stronger than other types of components, which can be very helpful in applications that require stability all the time.

Forged components, however, also have some weaknesses. For one, they lack sufficient control over their microstructure. They likewise have to be processed for secondary machining. The process of forging cannot also produce parts with multiple types of metals.

Die casting, alternatively, is a process that forces molten metal into a mould cavity. After pouring the molten metal into the die and subsequently freezes, it still has to go through different machining operations to come up with the needed specifications. What is great about die casting is that it can produce complex shapes at a high speed. The process can likewise produce durable and dimensionally stable components. These components are also heat resistant, strong, and light.

Some notable drawbacks of die casting, on the other hand, include high costs and long lead time. Gases may likewise be trapped during the operations, which can affect the overall quality of the components.

Work with PM Distributors

If you need sintered metal components for your application, just contact us at PM Distributors. Our wide range of stock allows you to obtain a ready source of supply to meet your needs. Whether you are a small business or a large corporation, our commitment is the same. We can provide the quality products you desire and establish and maintain a friendly professional relationship.

A wide array of processes and techniques are available today in processing different materials. But when it comes to metal powders, the powder metallurgy process is known to be the dominant way of turning these powders into something very useful.

Powder metallurgy covers a wide range of processes that generate parts and components out of metal powders. Some of the known processes of powder metallurgy are metal injection moulding, isostatic process, and metal additive manufacturing. But no matter what specific powder metallurgy process is conducted, the benefits that industries can get from their parts and products are typically similar.

Noteworthy Advantages of Powder Metallurgy

One of the most notable advantages of powder metallurgy is that it can minimise scrap losses. The processes of powder metallurgy can easily reduce and even avoid the need to maximise metal removal procedures. And since these processes are avoided, the wasteful losses in terms of the materials used can be prevented. Most of the metal powders that are being used for powder metallurgy are all included on the final parts or components, generating only 3% of expected scrap loss.

Aside from minimised scrap losses, powder metallurgy has been beneficial for industries as it can provide great results. The processes involved in powder metallurgy can be thorough. They can produce parts that are similar or close to the final intended dimensions. They can even generate an excellent surface finish. Additionally, any desired shape of the parts and components can be achieved through powder metallurgy, which can be difficult or impractical for other metalworking processes to carry out successfully.

Other advantages of powder metallurgy include enhanced strength, guaranteed resistance to wear, controlled porosity, and assured cost-effectiveness. Powder metallurgy processes can likewise produce moderate- to high-volume components without wasting a lot of resources.

Powder Metallurgy as a Sustainable Solution

The call for embracing sustainability across different industries has been going on for years. Luckily, powder metallurgy processes can guarantee sustainability through their methods and steps. All their previously stated advantages alone make them sustainable. From their cost-effectiveness down to their significant savings of resources, all these things allow them to be a great substitute to metalworking processes that will only mess up with the available natural resources for the decades to come.

There are two reasons why powder metallurgy processes can be identified as sustainable. First, the processes of powder metallurgy alone do not truly waste money, time, and energy. The scrap out of the metal powders is minimised tremendously, which can save a lot of money. Powder metallurgy processes can also produce many parts in one go, preserving a lot of time. The steps in processing powder metals are likewise reduced, conserving tons of energy.

Another reason behind the sustainability of the powder metallurgy is that the products of its processes can boast positive impact on the environment. Powder metal parts and products are known to be lightweight and durable, which makes them efficient and useable for a long time. And since they do not need to be replaced frequently, the amount of wasted parts and products is significantly minimised.

Powder metallurgy is truly sustainable as both its processes and its products do not waste any resources. For more information about powder metallurgy, just contact us at PM Distributors.

Sources:

Kerns, J. (2016, July 28). Powder-Metallurgy Processes. MachineDesign. https://www.machinedesign.com/materials/metals/article/21834821/powdermetallurgy-processes.

Metal Powder Industries Federation. (n.d.). Powder Metallurgy: A Green Technology. Metal Powder Industries Federation > Intro to PM > A Green Technology. https://www.mpif.org/IntrotoPM/AGreenTechnology.aspx.

A bearing is a machine element that can effectively support the rotation of the shaft inside a machine or device. Through this specific element, it can easily reduce the friction between the rotating shaft and other involved parts. It can likewise make the rotation smoother as well as maintain the position of the rotating shaft. All these functions of a bearing make it suitable for machines and devices that have wheels, gears, turbines, rotors, and other similar components.

Bearings can be made from different materials. They can likewise be grouped according to their working principles. Given the wide array of bearings that are available in the market today, industries have to ensure that they use the right type of bearings for their applications.

If you are currently looking for the correct type of bearing for your application, then here are some factors that you must consider and think about.

Specifications

One factor that you must consider in selecting the best bearing for your application is its size. The shaft diameter varies from one application to another. And if you have not accounted for the design requirements and specifications of your machine or other related things, then your bearing will certainly be incompatible with your application. Choose the size of your bearing wisely to avoid any issues and problems along the way.

Bearing Load

The bearing load can be determined in many ways. One way to measure bearing load is through its radial load, which is the amount of load that acts perpendicularly to the shaft. The axial load can also measure the bearing load as it determined the forces acting in parallel with the shaft. The combination of these loads creates a moment or combined load. All these load types must be handled by the bearing optimally to sustain the performance of the involved machines and devices.

Speed Limit

Another crucial factor in choosing the best bearing for your application is its speed limitations. Bearings often have specified speed limits and speed range, allowing industries to select the best bearings according to their requirements. One connected variable when assessing the speed limit and speed range of a bearing is lubrication. Bearings with the appropriate kind and amount of lubrication can provide high-speed performance throughout their service life.

Temperature

Machines and devices often generate heat during their operations. Hence, you must choose a bearing that can respond to the heat appropriately for it to effectively work even after utilising it for a long time. Alternatively, a bearing can also generate heat throughout its use. Therefore, you must choose lubrication that can maintain optimal operations and is attuned to the operating temperatures of the bearing. After all, its parts might deteriorate when exposed to too much heat.

Other factors that you should consider in choosing your bearings include sealing, durability, and maintenance. To know more about appropriate bearings for your applications, feel free to contact us at PM Distributors. We are a company based in Dandenong South, Victoria, Australia, that provides first-class service and bearings for your place of business or establishment.

Hollow bars can be produced in two ways. The first way to process hollow bars is to send a drill through a solid bar material. This process can be effective in maintaining accurate part dimensions, which can be very useful for critical applications. Another process in creating hollow bars is centrifugal casting. During this process, the molten material is spun and forced to enter the mould wall until it cools and hardens. With centrifugal casted hollow bars, they are expected to be dense and uniform in structure.

These types of bars can be created out of various materials. However, materials that are hard and strong can be difficult to process just to achieve perfect hollow bars.

Hollow Bars Main Advantages

One great thing about hollow bars is that they can reduce material losses. They can also help in reducing the need to process the operation of equipment for the deep drilling process. And since hollow bars are made from materials that can last for a long time and provide high cutting speed, then they are expected to maintain defect-free surfaces after being exposed to machining operations.

With the right set of materials, hollow bars can work in different environments due to their adequate corrosion protection. Even varying installation methods can be done to hollow bars, as long as they are made from durable and long-lasting materials. Additionally, hollow bars often possess very tight dimensional tolerances, allowing them to work optimally without expecting any failure.

Applications of Hollow Bars

A lot of industries today maximise hollow bars in a wide array of applications. Some industries that use hollow bars are automotive, chemical, food, general machining, paper and paperboard, shipbuilding, and textile. These industries effectively use hollow bars in generating radially machined components. They are likewise used to produce valves, actuators, pumps, compressors, axles, shafts, mechanical gaskets, connection components, and measuring instruments.

Buy Quality Hollow Bars Today

If you want to obtain quality hollow bars for your application, then feel free to reach us at PM Distributors. We offer a wide range of sintered bronze hollow bars that can provide a simple solution to countless bearing problems requiring ‘off standard’ sizes. The material we use for the manufacture of these bars is 90/10 bronze, which is typically comprised of 90% copper and 10% tin.

We are a company based in Dandenong South, Victoria, Australia, that is dedicated to providing first-class services and products for your place of business or establishment. We specialise in providing customised solutions to all our clients. We also listen to our customer’s requests and will provide service that will surpass your companies’ expectations.

Whether you are a small business or a large corporation, our commitment is the same. We can provide quality products for your employees’ desire, establish and maintain a friendly professional relationship, keep your machines full, clean and in proper working order, and provide convenience to all our clients.

Couplings are mechanical parts that can integrate two shafts together, allowing them to transfer power from the drive side to the driven side. They are likewise designed to allow shafts to obtain a certain degree of misalignment, end movement, or both.

One type of coupling that can be used in specific applications is K-Coupling. K-Coupling is a type of double-loop coupling that is made from ELASTACAST® polyurethane elastomeric material. This material allows the K-Coupling to resist cut and tear. It can also provide the coupling with added strength and maximum flexibility. K-Coupling is often assembled to zinc plated steel hubs, which are also known for their corrosion resistance and remarkable strength.

The overall design of K-Couplings can provide maximum operating flexibility, smooth operations, and a positive drive connection with no backlash. Additionally, K-Couplings come in a wide variety of variations. And so, to select the best K-couplings for your application, here are some tips that you should consider.

Determine Application Requirements

When choosing the right K-Coupling for your application, you must find out and determine your needed horsepower or wattage. You must also find out the starting torque or unusual start/stop operation to ensure that the K-Coupling can truly work well with your application.

Find the Amount of Space Available

Another tip that you should consider in choosing the best K-Coupling for you is to find the amount of space available for its installation. You must compare the space available with the dimensions of hub-to-hub and outside loop to avoid any issues during operations.

Consider the Sizes of the Shaft

As mentioned, couplings are intended to incorporate two shafts together. To select the best K-Coupling for your shafts, you must consider the sizes of your shaft so that they can work well with the coupling. You must likewise determine the amount of space available between them for better results.

Determine Degree of Misalignments

In selecting a K-Coupling for your application, you should predetermine the maximum degree of angular and parallel misalignment that your coupling will have to compensate. Your K-Coupling must still be within the recommended limits for it to work well with your application.

Consider the Surrounding Elements

K-Couplings generally have operating temperatures of -18°C to 83°C. And so, if your operations are not part of these temperatures, then these couplings might not be best for you. You must likewise find out if there are solvents, chemicals, acids, and gases involved in your application.

The unique form factor and design of K-Couplings allow them to be useful in a lot of applications. They can be deployed as vibration and positional compensators in a drive chain. They can even be used to correct thrust loads or angular errors, lateral alignment issues, and vibration-prone drive train problems.

To obtain these couplings, just contact us at PM Distributors. We are a company based in Dandenong South, Victoria, Australia, that provides first-class service and customised solutions to all our clients.

Metals are often used in creating a lot of products in various industries. Some of the most common industries that maximise metal materials include agriculture, automotive, construction, electronics, medical, power generation, and transportation. Tools, machines, appliances, and other equipment pieces are now made from different types of metals due to their accompanying features and qualities.

Two processes that are used in creating metal products are sintering and melting. While these processes may share some similarities in certain aspects, they have key differences that make them both beneficial for specific applications. To understand better, the following are some differences between the two.

Sintering Metals

Sintering is a process wherein a solid mass of metal is compacted and formed through heat or pressure. But unlike the melting process, sintering ensures that the metal material will not reach its liquefaction point throughout its processes. Aside from the initial heating, some of the steps involved in sintering metal include the removal of lubricants, reduction of oxide elements, bonding of particles, and cooling.

One common use of sintering is the integration of metal particles together, particularly metals that have high melting points. Another great use of sintering is that it can effectively reduce the porosity of an object, enhancing its overall properties along the way. This process can likewise increase the overall strength and structural integrity of metal products. Ultimately, sintering can be great for maintaining consistency and control over the production of items and products since they do not have to be melted.

Melting Metals

Melting, on the other hand, is intended to convert metal particles into liquid by placing them in a furnace. As the metal particles are placed in a furnace, the manufacturer will then set it to a temperature above the particles’ melting point, causing them to become liquid. The temperatures used for the furnace are often adjusted to meet the melting point of the particles that will be processed.

The melting process can be maximised when joining two metals together, which is also done in sintering. But one distinct use of melting is that it allows the reformation of metal particles, particularly on their shape and other physical properties. This process can also be used to remove the magnetic properties of metal products, allowing them to be effective in certain applications. One process that can benefit from melting is casting. It is a process where the liquid metal is poured into a die to create products.

Key Takeaways

Through the melting and casting processes, different metal products that have large and intricate shapes can be produced. However, they can still have some drawbacks along the way. The cooling process of these products can consume a lot of time. They can also have difficulty in holding tight dimensional tolerances. Additional machining costs and time are likewise required just to polish the part.

Sintering, alternatively, can already process materials without melting them entirely. This process can even be carried out at low temperatures, as long as enough pressure is provided.

For more information about sintering, feel free to contact us at PM Distributors.

Sintering is a heat treatment process that can effectively provide notable benefits to different sintered parts and components. When done successfully, this process can effectively reduce porosity, provide strength, and improve electrical and thermal conductivity. All the benefits of the sintering process have been maximised by different sectors such as automotive, aerospace, construction, and electrical sectors.

The process of sintering converts metal powders into parts and components that have most of the aforementioned properties. It only involves minimal machining operations, all without compromising the quality and efficiency of the products being produced.

An Overview of Powder Metallurgy

The powder metallurgy is comprised of steps that convert parts and components into metal powders. Unlike other metal-related processes, powder metallurgy can minimise and even avoid the use of metal removal processes that can generate significant yield losses and higher costs in manufacture.

The first step in powder metallurgy is blending. It is a process wherein the powders of raw metals are being selected and portioned into alloys. Blending allows the conversion of copper, tin, zinc, iron, and other raw metals into alloys such as bronze, brass, iron copper, and others. This is typically done by combining the metal powders, any additional elements, and a powdered lubricant.

After the blending process, the powder metallurgy will then proceed to compacting. This process is intended to produce finished parts that have precise specifications. The blended metal powders from the previous step are fed into dies and are compacted with hydraulic or mechanical pressures. The use of these compaction methods allows the powders to obtain the intended size, shape, and density.

The last major step in the powder metallurgy process is the heating or sintering of the products. Sintering the compacted metal powders is typically done by placing them in high-temperature furnaces. This process is designed to bond all the particles and additives of the metal powders together as well as generate other properties of the finished product.

Blending or Mixing Metal Powders

Metal powders can be blended and mixed with additional elements and a powdered lubricant during the entire powder metallurgy process. One of the main purposes of blending or mixing them is to introduce alloying additives in a homogenous form. Since die pressing feedstocks have elemental mixes that can promote high compressibility level, they can easily guarantee metal powders and other elements to stay intact throughout the powder metallurgy process.

Another purpose of blending or mixing metal powders is to incorporate a pressing lubricant on their overall composition. The incorporation of the lubricant allows the sintered products to have reduced friction during the compaction process. Lubricant can likewise reduce ejection forces as well as minimise the possibility of ejection cracking during the same compaction process.

To know more about the whole powder metallurgy process, feel free to contact us at PM Distributors. We are a company based in Dandenong South, Victoria, Australia, that is dedicated to providing first-class services for your place of business or establishment.