How a Powder Production Line Works

How a Powder Production Line Works

Metal powders are produced by melting, evaporating or chemical reduction. Atomization is the most common technique.

The compaction process is rapid with minimal deformation. Compaction pressure is typically applied through punches on both ends of the tool. This allows for more complex workpiece designs including threads and reliefs.

SIEHE Industry has designed Powder Metallurgy Powder Production Line Complete Production Line for domestic well-known enterprises, mainly consist of the following systems.

Feeding

Powder production lines are a new technology that utilizes powdered metals to create components. They can reduce the time needed for subtractive manufacturing processes and allow manufacturers to produce complex shapes with greater accuracy. Powder metallurgy can also combine different metals and nonmetals in one product, eliminating the need for laminations and reducing cost.

The powder feed line is a comprehensive process that includes mixing, forming, extruding, and packaging. It is designed to provide a complete solution for producing feed for poultry, pigs, fish, and livestock. It can be used in small to medium farms and is easy to operate.

The feeding equipment in the baby nutrition power processing line is equipped with a hopper feeder and twin-screw extruder. It is capable of producing high-quality nutritional powder foods with a variety of raw materials. It is also energy-efficient and environmental friendly. It is suitable for long-term sea shipment. The feeding line also uses a weighing system with Mettler Toledo products to ensure accurate batching. This makes the process more efficient and improves its quality.

Mixing

Powder mixing is an essential step that can have a significant impact on process efficiency and end-product quality. It involves dissolving, emulsifying or dispersing powder ingredients into liquid medium and ensures that the entire mix is evenly mixed. For this reason, it is a highly complex operation that must be done properly.

Powders that tend to lump, such as stabilizers, require high shear mixing to prevent them from clumping or clogging. These difficult powders must be fully dispersed in a short time in order to achieve a homogenous product. This is possible by using a batch mixer that utilizes a rotor and stator to generate high shear forces.

The powders used in the production line can be deposited directly into the mixing tank, or the ingredients may be premixed in a separate tank. Then the powder is fed into the mixing tank and the mixer blades are rotated at a speed of approximately 20 rpm.

Isostatic powder compacting uses pressures between 80 MPa and 1600 MPa to compress the powder mixture into a filling machinery predetermined shape or die. This reduces potential voids and increases the density of the resulting part.

Extrusion

The extrusion process shapes elongated structures with constant, often complex, cross-sections. It works by forcing the materials through a shaping nozzle in a viscous state under high temperature and pressure. It produces a shaped material, known as an extrudate, which is then debinded and sintered to produce the finished product.

This processing method is suitable for a wide range of metals and alloys. It can be used for a variety of purposes, from producing powders to producing wrought materials such as rods and bars. It is also suitable for producing components with complex geometries that are difficult to machine in a sintered state.

Another advantage of this process is that it can be done above the recrystallization point, which helps to prevent work hardening and makes it easier to push the material through the die. This makes it a good choice for forming a broad range of products, including foods and feeds. It can be used to produce foods such as textured vegetable protein (meat analogs), breakfast cereals, snacks, and third-generation foods. It can also be used to produce feeds for fish and livestock, such as floating and sinking feeds.

Forming

One of the most critical elements of powder metal production is forming. The process produces near-net shape components, lowering manufacturing costs and eliminating the need for secondary operations such as machining. This makes it well suited for high-volume production and demanding applications where precision dimensions are important.

Forming begins with a precise mix of metals in the form of fine, grain-like particles. This mix is then fed into a die cavity, which determines the basic shape of the finished part. The resulting powder compact is often called a briquette. This briquette can then be formed into a specific shape by a variety of methods, including extrusion and zero pressure molding.

Other forming techniques include cold isostatic pressing and hot isostatic pressing. Cold isostatic pressing uses a mixture of low temperatures and isostatic pressure to eliminate porosity, increase density, improve mechanical properties, and make the compacted briquette workable. This method can also be used for parts where pressing dies are not an option, such as shaped parts like cams and ratchets. Other processes, such as selective laser sintering and metal additive manufacturing, use focused lasers to bind the briquette material into the final part.

Packaging

Packaging is an essential step in the production process. It protects the product from damage during shipment and makes it easier to transport. It also helps to attract customers and make the marketing efforts more effective. Packaging can also be used to display important information about the product, such as its name, type, quality, price and manufacturer.

The packaging process can vary depending on the material and the type of product. For example, metals made from powder metallurgy use different techniques and equipment than plastics. One such technique is plasma-based atomization, which uses a thin jet of liquid metal intersected by high-speed streams of atomized water to form small particles. The resulting powder can then be compacted, sintering it into a solid mass.

Packaging also includes the process of adding a logo and brand name to the products. This gives them a unique identity and differentiates them from similar products in the market. It also ensures that the product is recognizable and easy to use. In addition, the packaging must be environmentally friendly and not harm the well-being of people and the natural environment.

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