Lab press molds are versatile tools used for forming and testing a wide range of samples. Our molds come in a complete range of sizes and have interchangeable accessories. These molds are commonly used in various fields such as battery, superconductor, cement, ceramics, catalysis, silicate, powder metallurgy, sea mud analysis, biochemical analysis, and new material sample preparation research and development. They can also be used with testing instruments like calcium iron, infrared, X-ray fluorescence, and others.
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Molds & Accessories
Cylindrical Lab electric heating Press Mold
Item Number : PMH
Item Number : PMC
Item Number : PMS
Assemble Lab Cylindrical Press Mold
Item Number : PMAC
Assemble Square Lab Press Mold
Item Number : PMAS
Item Number : PMW
No demolding lab infrared press mold
Item Number : PMI
Item Number : PMID
XRF Boric Acid lab Powder Pellet Pressing Mold
Item Number : PMXB
XRF & KBR steel ring lab Powder Pellet Pressing Mold
Item Number : PMXS
XRF & KBR plastic ring lab Powder Pellet Pressing Mold
Item Number : PMXP
Lab presses come in two main types: floor standing and benchtop devices. They can be customized to meet specific requirements for force and precision. While standard presses are sufficient for most lab applications, some situations call for a more specialized press that can apply high forces or move with extreme precision.
Lab presses are commonly used for three types of processes: compression molding, transfer molding, and vacuum press applications.
Types of Press Processes
Compression molding
Compression molding is a basic and widely used molding technique. The process involves compressing a bulk material into a mold cavity using a press. The workpiece can be preheated or heated during pressing using heated platens, depending on the material.
This technique is cost-effective and can produce relatively large and complex components. Compression molding is commonly used for molding plastics, fiberglass, and metals. It is particularly useful for producing moderately curved or flat components.
Transfer molding
Transfer molding, also known as compression transfer molding, is a technique that applies pressure to force the material into a mold. This process achieves higher dimensional tolerances, but it requires higher pressures than compression molding.
Transfer molding is commonly used to generate components from resins, forming thermoset products. It is widely used in industries such as construction, electronics, aerospace, and sports equipment manufacturing.
Vacuum press
Vacuum press refers to any type of press where the workpiece is held in an evacuated environment during pressing. This technique can increase production speed, improve quality, and reduce waste materials.
By removing heated gases and trapped air, the vacuum can minimize defects that may occur with compression or transfer molding. Vacuum presses are commonly used in industries where high-quality precision is required, such as manufacturing.
This technique can be used for a wide range of materials, including plastics, composites, and metals. Vacuum presses are particularly useful for producing components with intricate details or complex shapes.
KinTek Lab Press Molds & Accessories
For those looking for reliable and versatile lab press molds, KinTek Lab Press Molds & Accessories is an excellent choice. With a long production history, our lab press molds have been proven to meet the highest standards of quality and performance.
We offer a complete range of molds that can be customized to meet your specific needs. From compression molding to vacuum press applications, our lab press molds are versatile and designed to meet the demands of any lab application.
FAQ
What is a press mold?
A press mold is a device used in material processing methods such as cold isostatic pressing (CIP) and metal mold pressing to create molded bodies from powder materials. In CIP, the mold containing the powder is immersed in a pressure medium, and isostatic pressure is applied to the outer surfaces of the mold to compress the powder into a shape. Metal mold pressing applies only uniaxial pressure to the powder material to create molded bodies. CIP can produce products with uniform density and homogeneity due to no frictions with a metal mold.
What is press Mould in ceramics?
Press moulding is a ceramic forming technique that involves the compaction of powders by applying either a rigid or flexible pressure. It can be either uniaxial or isostatic, depending on the shape required. Isostatic pressing is used for shapes that cannot be obtained by uniaxial pressing or for added value products that require high density and isotropic green bodies. The molds for axial-pressing are usually made of steel, while those for isostatic pressing are made of elastomers, silicone, and polyurethanes. This technology is applied in various fields like ceramics, MMC, CMC, and Silicon nitride for cutting tools, components of heavy-duty valves, wear parts for process technology, and more.
How do you prepare pressed pellets for XRF?
Pressed pellets for XRF analysis are prepared by grinding the sample to a fine particle size and mixing it with a binder or grinding aid. The mixture is then poured into a pressing die and compressed at a pressure of between 15 and 35T. The resulting pellet is ready for analysis. It is important to consider the particle size of the sample, choice of binder, sample dilution ratio, pressure used for pressing, and the thickness of the pellet when designing a sample preparation recipe. Consistency in the preparation procedure is key to ensuring accurate and repeatable results.
What is KBr used for?
KBr, or potassium bromide, is commonly used in laboratories as a matrix for infrared spectroscopy. It is mixed with an organic sample and compressed into a pellet using a press like the benchtop KBr Pellet Press. The resulting pellets are used for analysis of the sample's molecular structure and composition. KBr is also used for briquetting inorganic samples for x-ray fluorescence spectroscopy and for pressing thin polymer films using heated platens for transmission sampling by IR spectroscopy. It is an important tool for researchers in the fields of pharmaceuticals, biology, nutrition and spectroscopy.
How are pellet molds used?
To use a pellet mold, the powdered or granular material is first loaded into the mold cavity. The material is then compacted by applying pressure using a laboratory press or hydraulic machine. The pressure causes the material to conform to the shape of the mold, resulting in a solid pellet or cylindrical sample. After the compaction process, the pellet is removed from the mold and can be further processed or analyzed as needed.
What pressure should XRF pellets be?
XRF pellets should be pressed at pressures between 15 and 40 tons for 1-2 minutes to ensure that the binder recrystallizes and that there are no void spaces present in the pellet. The pressure applied by the hydraulic press should be enough for the sample to be completely compressed. The thickness of the pellet is also crucial, as it must be infinitely thick to the X-rays. Working with small particle sizes (<50µm or <75µm) is also important for effective analysis. These factors impact how well the sample binds together under pressure, which affects the analytical results.
What is the KBr pellet method?
The KBr pellet method is a technique used in spectroscopy to analyze solids. It involves compressing powdered materials into pellet form using a compact, hand-operated press called the KBr Pellet Press. The resulting pellets are cylindrical in shape and can be of any desired thickness. This method is particularly useful in pharmaceutical, biological, nutrition, and spectrographic operations, and provides advantages such as using less sample than ATR, higher signal-to-noise, and control over signal intensity by changing sample concentration or increasing pathlength. It also offers clear advantages in detecting trace contaminants.
What types of materials can be pelletized using pellet molds?
Pellet molds can be used to pelletize a wide range of materials, including but not limited to powders, granules, metals, ceramics, pharmaceuticals, and catalysts. They are particularly useful for materials that require compaction or shaping before further analysis or processing. Pelletizing materials can improve their flow properties, density, and handling characteristics, making them suitable for applications such as tabletting, catalyst preparation, fuel pellet production, and sample preparation for spectroscopic or analytical techniques.
What is the advantage of XRF pressed pellet technique?
The advantage of XRF pressed pellet technique is that it produces high-quality results with a higher signal-to-noise ratio, allowing for the detection of even the lightest elements. Quantifying the elemental composition without pressed pellets can lead to significant discrepancies between expected and actual values. The grinding of the sample into fine particles and compressing it into a smooth and flat XRF pellet reduces background scattering and improves the detection of emissions. Pressed pellets are also relatively quick, low-cost, and lend themselves to simple and cost-effective automation for higher throughput laboratories.
Why KBr is used for pellet?
KBr (potassium bromide) is used for pellet preparation because it is a stable, transparent, and inexpensive salt that is easy to obtain in high purity. When a sample is mixed with KBr powder and compressed into a pellet using a press, it forms a flat, uniform disc with a consistent thickness. KBr pellets are commonly used in spectroscopy applications to analyze solid samples because they provide a clear and reproducible path for infrared light to pass through, which allows for accurate measurements of the sample's chemical composition.
How can one select the appropriate pellet mold for their specific application?
Pellet molds can be used to pelletize a wide range of materials, including but not limited to powders, granules, metals, ceramics, pharmaceuticals, and catalysts. They are particularly useful for materials that require compaction or shaping before further analysis or processing. Pelletizing materials can improve their flow properties, density, and handling characteristics, making them suitable for applications such as tabletting, catalyst preparation, fuel pellet production, and sample preparation for spectroscopic or analytical techniques.
How to make KBr pellets for FTIR?
To make KBr pellets for FTIR, a pellet press die set, pestle and mortar, and IR-transparent medium, such as KBr, are required. The KBr and sample are mixed in a mortar, and the resulting mixture is pressed into a disc using a die set and a hydraulic press. The pellet should be thin, transparent, and contain only a small amount of the sample. The typical ratio of KBr to sample is 100:1. KBr is hygroscopic, so it should be stored in a dry environment and prepared in a glovebox or with a vacuum die to avoid moisture absorption.
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