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Tungsten Carbide Flowdrill Bits Supplying

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Author : Ruby C.
Update time : 2025-12-11 17:29:00
Tungsten Carbide Flowdrill bits, also known as tungsten carbide thermal drills, are the core component of the hot melt drilling process. Their wear-resistant and high-temperature-resistant properties play a crucial role in metal processing, making them an ideal choice for high-temperature friction and chip-free drilling.

The Theory and Advantages of Hot Melt Drilling
Under high-speed rotation, the tungsten carbide hot melt drill experiences intense friction with the metal surface, instantly generating temperatures exceeding 600 degrees Celsius. This high temperature, combined with the pressure generated by rapid feed, quickly softens the workpiece surface metal, thus rapidly completing drilling and bushing fabricationthe entire process takes only 2-6 seconds. The formed bushing can be directly threaded, eliminating the cumbersome welding or riveting process. This process simplifies the operation, making it more convenient; simultaneously, it ensures hole accuracy, and the extruded threads possess excellent tensile and torsional strength. Due to its ease of operation and lack of additional equipment, the hot melt drilling process effectively replaces expensive welding processes and has gradually become a new alternative to traditional welding (riveting) nuts for thin-walled workpieces. In addition, this process does not produce metal shavings, meets environmental protection requirements, and saves materials.Classification and Characteristics
Based on the different surface requirements of workpieces after being penetrated by a thermoplastic drill, carbide thermoplastic drill bits can be divided into two main categories: one is the round-mouth  type (standard type) thermoplastic drill bit, and the other is the flat-mouth type (sliding type) thermoplastic drill bit. Each of these types also includes both long and short drill bits.

Round-mouth thermoforming drill bits, also known as carbide round-mouth thermal drill bits, are the standard type of thermoforming drill. Their unique feature is that when the drill bit penetrates the workpiece and stretches to form a bushing, it leaves a raised ring on the workpiece surface. This boss design is ideal for use in thread sealing or as a nut washer.Tungsten Carbide flat-mouth thermo forming drills, a variant of carbide thermoforming drills, are unique in that they penetrate the workpiece and, after stretching to form a bushing, simultaneously remove the raised ring on the workpiece surface, ensuring a smooth finish. This type of thermoforming drill has applications in various fields, such as thread extension, welding, multi-layer heat exchangers, bearing supports, and screw connections in stainless steel construction or metal furniture.Furthermore, depending on the required workpiece thickness, carbide flat-end thermoforming drills are available in short and long versions. Short drills are suitable for penetrating workpieces with a thickness ranging from 0.8mm to 3mm, while long drills are suitable for penetrating workpieces with a thickness exceeding 3mm up to 12mm.OSTON CARBIDE is committed to providing customers with cost-effective carbide wear-resistant solutions. If you have any questions or needs regarding carbide, please contact us.