エイチ・エー・ティー List of Products and Services

We provide precision machining technology cultivated through aerospace components. 【Features】 ○ Wire Electrical Discharge Machining This method uses a thin wire as a machining tool, running it under tension while generating discharge between the workpiece and the electrode. The discharge energy processes the workpiece in a manner similar to a wire saw. ○ Die-sinking Electrical Discharge Machining For example, if a star-shaped machining tool is prepared, it can directly create a star-shaped hole. In this case as well, discharge is generated between the workpiece and the machining tool (electrode), processing the workpiece. Since the shape of the machining tool (electrode) is directly transferred, it is possible to machine even somewhat complex shapes by creating an electrode in the desired shape.

There are three types of electrical discharge machining: shape cutting discharge machining, wire discharge machining, and fine hole discharge machining, each utilizing its unique characteristics. It allows for high-precision machining of complex shapes, such as curved surfaces and spheres, regardless of hardness, as long as the material is conductive, even for hard materials, hardened materials, and difficult-to-cut materials that cannot be removed by conventional machining machines. Therefore, it has become indispensable in current manufacturing technology. 【Features】 - Unlike conventional machining, electrical discharge machining progresses without contact. - It leaves minimal residual stress in the material, making it a gentle machining method with no stress on the material. - It does not require fixtures or clamps, making it effective for small lots and prototypes. For more details, please contact us or download the catalog.

At H.A.T. Corporation, we aim to meet our customers' needs with the highest "quality," "technology," and "speed," leveraging the technical expertise we have cultivated in the production of aerospace components. In 2010, we obtained the JISQ9100 global certification for aerospace quality, and within that context, we launched our non-destructive testing division. Under this quality-conscious approach, the inspection equipment and related products we handle can be reliably delivered to you with a solid support system in place. 【Processing Technology and Services Introduction】 - Die-sinking electrical discharge machining, fine hole electrical discharge machining - Wire cutting machining, water jet cutting - 5-axis machining and vertical lathes - Sales and installation of non-destructive testing equipment - Calibration services for illuminance meters For more details, please contact us or download the catalog.

The hole used to intake air for cooling the main body of the product is called a "cooling hole." "Fine hole electrical discharge machining" can create angled holes in aircraft components and turbine blades. Not only can we create regular holes, but we can also improve the air cooling effect with fan-shaped machining using our 5-axis fine hole machining machine. Additionally, creating fine holes at the peak of a mountain with conventional machining is extremely difficult due to tool slippage, but with our processing, we can smoothly create fine holes at the peak. 【Features】 ■ Capable of angled hole machining for aircraft components and turbine blades ■ Fan-shaped machining is also possible with our 5-axis fine hole machining machine ■ We have introduced three 5-axis fine hole machining machines to meet customer needs ■ It is also possible to create fine holes at the peak *For more details, please refer to the PDF document or feel free to contact us.

Electrical discharge machining repeatedly causes insulation breakdown in a liquid, shaping the product along the electrode. Normally, the machining debris would float in the liquid and be expelled externally, but when discharge occurs with the suspended sludge, the heat melts the sludge, which adheres to areas other than the intended machining section. This is referred to as "spatter adhesion," and it is a contributing factor to the adhesion. For components used in aerospace parts and similar applications, machining is performed without producing spatter. Please contact us for inquiries regarding shape engraving electrical discharge machining. *For more details, please refer to the PDF document or feel free to contact us.*

This time, we used titanium, which is commonly used as a material for aerospace components, and measured the surface roughness after performing wire cutting with the following number of passes on the same surface: 1 time, 3 times, 4 times, and 6 times. Typically, only the 1st cut is done, but if the machining drawing requires a specific surface roughness, it may be passed through multiple times. If the altered layer from electrical discharge machining is unacceptable, finishing is done using methods such as machining or polishing. 【Wire Cutting Passes and Surface Roughness (Measured Values)】 ■1st: Ra3.2 ■3rd: Ra1.6 ■4th: Ra0.7 ■6th: Ra0.2 *For more details, please refer to the PDF document or feel free to contact us.

"Electrical discharge machining" (EDM) originated around 1943 during World War II when the Soviet couple Lazarenko discovered the phenomenon of electrode contact wear due to sparks during their research. This led to the development of the electrical discharge machining method. There are three types of electrical discharge machining: "die sinking," "wire cutting," and "hole drilling." "Artificial defect machining (narrow width machining)" is an electrical discharge machining method that processes narrow width defects (slits, cracks, etc.) of customer-specified dimensions on metal test pieces (such as tensile test specimens). **Features of artificial defect machining (narrow width machining):** - An electrical discharge machining method that processes narrow width defects of customer-specified dimensions on metal test pieces, etc. - Processing dimensions vary depending on the material, etc. *For more details, please refer to the PDF document or feel free to contact us.*

Our company specializes in fine hole electrical discharge machining. By using thin pipe electrodes (mainly made of brass or copper) and applying hydraulic pressure from the inside of the pipe, we can create long and narrow holes that are difficult to achieve with conventional discharge machining. We can accommodate diameters from φ0.10 to φ3.0. Please feel free to contact us with your requests. 【Features】 ■ Use of thin pipe electrodes (mainly brass or copper) ■ Enables the creation of long and narrow holes ■ Fine hole machining available with 5-axis capability ■ Accommodates diameters from φ0.10 to φ3.0 *For more details, please refer to the PDF document or feel free to contact us.