DIAMET CORPORATION List of Products and Services

This method uses a low permeability powder core "MBS" in the main transformer and adopts ON-ON / ON-OFF operating modes, enabling the miniaturization of magnetic components to about 1/3 and the power board size to about 2/3 compared to conventional circuits (according to our estimates). In addition to achieving space-saving in the power circuit without increasing the operating frequency, further miniaturization is possible by increasing the operating frequency. It is possible to achieve a compact and high-efficiency DC-DC converter without using SiC or GaN, while still using general-purpose Si. 【Features】 ■ Realizes miniaturization and high efficiency of DC-DC converters (power circuits) ■ By suppressing the amplitude of the excitation current, it also achieves a reduction in ΔB (change in magnetic flux density) and the resulting low loss ■ The output ripple current is approximately halved compared to conventional technology, allowing for a reduction of the output capacitor by half ★ We are currently offering a simple calculation tool. Please contact us if you are interested. You can also view technical materials by clicking the "Download Catalog" button. ★ We will be exhibiting at the Techno Frontier Power System Exhibition and will also be speaking at the organizer's seminar. For more details, please refer to the basic information section.

• converter

This method uses a low permeability powder core in the main transformer and adopts ON-ON and ON-OFF operating modes, enabling the miniaturization of magnetic components to about one-third and the power board size to about two-thirds compared to conventional circuits (according to our estimates). Additionally, the reduction of the amplitude of the excitation current leads to a decrease in ΔB (change in magnetic flux density), achieving low loss. Instead of increasing the operating frequency to achieve miniaturization, we contribute to space-saving in power circuits by innovating the handling of magnetic components. It is also possible to further miniaturize by increasing the operating frequency. High efficiency and compactness of DC-DC converters can be achieved without using SiC or GaN, while still utilizing general-purpose Si. We offer our unique powder core "MBS" series suitable for this circuit method. 【Features】 ■ Miniaturization and efficiency improvement of DC-DC converters are achievable. ■ ΔB (change in magnetic flux density) can be suppressed, enabling low loss. ■ The output composite ripple current is about half that of conventional technology, allowing for a reduction of output capacitors by half. ★ We are currently offering a simple calculation tool. Please contact us if you are interested. You can also view technical materials from the download button.

• converter

Achieving miniaturization of passive components in ON-ON converters necessitates increasing the operating frequency, but this also leads to a decline in power conversion efficiency. The new circuit topology proposed by our company, the isolated “TriMagiC Converter(TM),” replaces ferrite with our proprietary magnetic material “MBS,” which features low permeability, high saturation magnetic flux density, and low loss. Powdered cores are used for the magnetic components of the transformer and resonant inductor. Our prototype testing has confirmed that by utilizing “MBS” in an ON-ON & ON-OFF operating mode circuit, we can simultaneously achieve high conversion efficiency and significant size reduction—reducing the total volume of magnetic components to one-third of conventional designs while still handling high power. The isolated “TriMagiC Converter(TM) achieves miniaturization and high efficiency of Switched Mode Power Supplies without the use wide band-gap devices such as SiC or GaN, even utilizing conventional Si switching devices. Moreover, replacing conventional phase-shifted converters with this new topology is straightforward. This document provides an overview of the features of the new circuit topology.

• converter

A recycling example of powdering used powder cores and reforming them into powder cores again. - Since powder cores are easy to crush, the cores are crushed, processed, and reused. - This contributes not only to CO₂ reduction but also to the realization of a circular economy.

• Other motors

It is possible to impart dimensional shapes that are difficult to achieve with electrical steel sheets, enabling the miniaturization of motors. Shapes such as cores for axial flux (gap) motors, flanged cores for radial gap motors, and claw pole cores can be provided. ■ Core for axial flux motors ■ Core for axial gap motors ■ Flanged core ■ Claw pole core Please feel free to contact us if you have any requests. *For more details, please download the PDF or feel free to contact us.

• Other motors

Our Fe-Cu-C series high-strength materials achieve 1.6 times higher strength through increased density and can also be used as an alternative to nickel-containing materials. Advantages of high-density materials: Larger mass allows for the utilization of inertial forces, high wear resistance, and improved rigidity. Advantages of high-strength materials: Enhanced load-bearing capacity, strong against impact and fatigue, and expected longer lifespan. Our manufacturing method allows for partial densification, which also enables cost reduction.

• Transmission

Helical gears are utilized for their low noise, low vibration, and minimal torque variation, but the helical tooth profile is often difficult to shape and tends to be high in cost. With our shape-forming technology, we provide low-cost, high-precision helical gears.

• gear

Please feel free to contact us if you have any requests. 【Design Proposal Examples】 ■Joint Products ■Holder Bearings *For more details, please download the PDF or feel free to contact us.

• Engine parts

It is used in circuits that raise the battery voltage to the level necessary to drive the motor. Diamet has a large number of molding presses ranging from 40 to 800 tons, enabling mass production of a wide variety of sizes and shapes, from small, precise parts to large, complex shapes. Our flexible production system that meets diverse customer needs is our strength. We are capable of manufacturing block cores, U cores, E cores, PQ cores, and other shapes. Please feel free to contact us if you have any requests. ■ Application example Power control unit for hybrid vehicles *For more details, please download the PDF or feel free to contact us.

• converter

The thin-walled structure achieves space-saving and cost reduction. By replacing conventional rolled bushes (oil-free type), it demonstrates excellent sliding characteristics.

• Metal bearings

The coaxial precision of the inner diameter is improved through integrated manufacturing. It is possible to reduce the contact area while ensuring the shaft holding length, which reduces friction loss.

• Metal bearings

We offer the "Low Cost High Performance Iron-Copper Sintered Oil-Embedded Bearing / F350," which has excellent sliding properties due to its high copper coating rate. The reduction in copper content is compensated by the use of special copper powder, achieving a high copper coating rate on the sliding surface. Sintered oil-embedded bearings are utilized in various fields, including bearings for motors, due to the excellent mass production capabilities and homogeneous properties characteristic of powder metallurgy. Please feel free to contact us if you have any inquiries. *For more details, please download the PDF or feel free to contact us.

• Metal bearings

Our corrosion-resistant bearings are widely used globally, utilizing bearing materials that exhibit excellent corrosion resistance, wear resistance, and bearing performance even in gasoline containing high concentrations of sulfur and organic acids. Please feel free to contact us if you have any inquiries. ■ Application Examples Fuel Pumps *For more details, please download the PDF or feel free to contact us.

• Metal bearings

Low-friction iron-copper sintered oil-containing bearings are used in motors that adjust the opening of electronic control throttle valves. Since the electronic control throttle is installed near the engine, it must be able to withstand a wide temperature range and have vibration resistance. Therefore, bearing materials that are impregnated with a special fluorine oil capable of handling a wide temperature range, and that have a copper-rich microstructure controlled in the inner diameter surface, demonstrate excellent wear resistance, low friction coefficients, and anti-seizure properties, contributing to improved fuel efficiency, reduced harmful exhaust emissions, and significant cost reductions. Please feel free to contact us if you have any inquiries. *For more details, please download the PDF or feel free to contact us.

• Metal bearings

The bearings for EGR (Exhaust Gas Recirculation) are used in the valve that directs a portion of the exhaust gas to the intake side, and they are utilized in a wide range of exhaust gas environments, from atmospheric temperatures to high temperatures where lubricating oil cannot be used. Therefore, by adding a large amount of solid lubricants to the bearing material itself, we have achieved a material that excels in self-lubrication at high temperatures and has excellent oxidation resistance, contributing to the reduction of NOx and improved fuel efficiency in automobiles. Please feel free to contact us if you have any inquiries. *For more details, please download the PDF or feel free to contact us.

• Metal bearings

This is a sintered bearing suitable for resin inserts that have been shaped to prevent drop in the rotational and thrust directions without machining, thanks to our unique shape-giving technology. Please feel free to contact us if you have any inquiries. *For more details, please download the PDF or feel free to contact us.

• Metal bearings

We offer the "Low Cost High Performance Iron-Copper Sintered Oil-Embedded Bearing / F350," which has excellent sliding properties due to its high copper coating rate. The reduction in copper content is compensated by the use of special copper powder, achieving a high copper coating rate on the sliding surface. Sintered oil-embedded bearings are utilized in various fields, including bearings for motors, due to their excellent mass production capabilities and homogeneous properties, which are characteristics of powder metallurgy. Please feel free to contact us if you have any inquiries. *For more details, please download the PDF or feel free to contact us.

• Metal bearings

■Variable Valve Components We manufacture components for variable valve timing mechanisms. For this product, which requires high precision and high strength, we contribute to cost reduction through complex shaping using multi-stage molding technology, processing reduction by imparting shapes with high-precision molds, and strengthening through high-density manufacturing methods. ■Sprockets and Pulleys We provide low-cost and high-precision sprockets and pulleys without machining. We mainly manufacture sprockets for roller chain types and silent chain types. Particularly for the silent chain type, which requires high strength, we are responding with technologies such as high-density manufacturing and steadily increasing our achievements. ■Oil Pump Rotors The IPR (Intelligent-Profile-Rotor) is our original sintered oil pump rotor featuring a patented tooth profile characterized by high discharge efficiency, low friction, and low noise. It contributes to improved fuel efficiency and noise reduction. Additionally, leveraging its high efficiency, we are expanding our achievements in the production of small rotors for electric oil pumps and similar applications. As a design service, we offer customization of tooth profiles and suggestions for port shapes according to customer requirements.

• gear

We manufacture sintered stainless steel components such as exhaust system parts and sensor rings for brakes. These products are required to have high corrosion resistance and rust prevention properties to be used in harsh conditions like high-temperature environments. We offer products tailored to various usage environments and required characteristics at low costs. Please feel free to contact us if you have any requests. ■ Exhaust system components ■ Sensor rings for brakes ■ Application examples Outboard motors, automotive exteriors, water-related applications, chemical industry, etc. *For more details, please download the PDF or feel free to contact us.

• gear