Hole Drilling EDM Service
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High Precision Cutting
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24/7 operation
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Tolerances as precise as ±0.004mm
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Response within 8 hours
What is Hole Drilling EDM ?
Small-hole EDM machining was initially used for pre-drilling starter holes for the Wire EDM machines. We still use it for this purpose every day. This process uses a long brass or copper electrode to drill 0.2-5mm diameter holes for the soft or hard steel and carbide material. The brass is held in the chuck and rotated as the flow of water, then wash away the eroded material.Unleash Precision with Sundi’s EDM Services: Where Advanced Machinery Meets Expertise. Elevate Your Projects with Our Exceptional Quality, Swift Turnaround, and Competitive Rates, Ensuring Your Market Dominance.
Hole drill EDM (Electrical Discharge Machining) operates by utilizing a hollow, tubular electrode made from conductive materials like copper or brass to drill precise holes in various substrates. This advanced process starts when the electrode approaches the workpiece and a dielectric fluid, usually an oil or water-based solution, is pumped through the electrode. The fluid acts as an insulator until electrical voltage between the electrode and the workpiece reaches a point where it breaks down the fluid’s resistance, creating a spark.
This spark generates intense heat, melting and vaporizing the material directly in front of the electrode. As the electrode rotates and moves into the material, it continues to form sparks, eroding the material into the desired shape and depth. The debris from the material erosion is flushed away by the continuous flow of dielectric fluid.
Why Choose Us for Hole Drilling EDM
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Mass Capacity and Short leadtime
At Sundi, we employ 6+ sets Hole Drilling machines that enable us to reach the production requirements shortly.
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Expertise and Experience
With a team of highly skilled professionals, Sundi boasts extensive experience in Hole making.
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Versatility in Materials and Applications
We can work with a wide range of materials, including hard-to-machine metals and alloys.
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Customization and Flexibility
Sundi offers customized solutions to meet your specific requirements.
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Quality Assurance and Precision
We adhere to strict quality control protocols and use precision measuring tools to ensure the accuracy and quality.
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The Application in Sinker EDM and Wire EDM Process
Hole Drilling EDM (Electrical Discharge Machining), also known as spark machining, plays a pivotal role in both wire EDM (Wire Electrical Discharge Machining) processes and die-sinking EDM applications by providing precise, efficient, and versatile hole-making capabilities.
In Wire EDM
Hole Drilling EDM is often employed to create the initial hole that serves as an entry point for the wire in wire EDM processes. This is especially crucial when the wire cannot be threaded through the workpiece in any other way, such as when starting a cut in the middle of a solid material. The precision and capability of Hole Drilling EDM to penetrate hard materials without mechanical stress make it an ideal choice for initiating the wire path, ensuring the wire EDM process can proceed smoothly for intricate cutting operations.
In Die-Sinking EDM
In die-sinking EDM, where the electrode creates shapes in the workpiece by sparking, Hole Drilling EDM can be used to produce precise starter holes or cavities that define the initial depth or location for the die-sinking process. This is particularly useful for creating vents, cooling channels, or specific geometric features within molds or complex components. The hole drilled by the EDM process provides a controlled environment for the die-sinking electrode to engage the material, enhancing the overall precision and efficiency of the EDM operation.
Hole drill EDM Main uses
Hole drill EDM is primarily utilized for boring small and precise holes into hard materials. This technique is effective for both through holes and blind holes, though for blind holes requiring a flat bottom, sinker EDM machines are more suitable.
Advantages of Hole Drill EDM
Hole drill EDM is capable of producing extremely small holes, with diameters as tiny as 0.065 mm. It uniquely allows for depths up to 1 meter, a feat unmatched by other manufacturing methods. This technology excels in drilling through highly durable materials such as stainless steel, tool steel, and tungsten carbide, provided they conduct electricity. Additionally, hole drill EDM is effective for perforating curved surfaces, a task where conventional mechanical drills tend to deviate due to the curvature.
Disadvantages of Hole Drill EDM
Hole drill EDM is considered a slow method, and although its speeds are progressively enhancing, drilling just one hole often requires several minutes. Due to this time consumption, it is not recommended for large-scale production tasks. Moreover, the process is quite costly due to the extended durations needed for part production and substantial energy usage. Additionally, hole drill EDM is restricted to conductive materials and is not applicable for non-conductive materials such as plastics or composites.