Drilling is a process used to create cylindrical holes in structural steel and other metals. The type of drill bit required depends on the hole depth, material hardness, and desired finish.
Infra-Metals Co. is at the forefront of precision metal drilling and associated machining services. We employ carbide single-point, carbide multipoint, and high-speed steel (HSS) bits to accommodate various industrial applications. Integrating a coolant system into the drilling process minimizes thermal expansion, reduces tool wear, and evacuates chips efficiently.
Drilling Capabilities and Specifications
Infra-Metal’s comprehensive metal drilling services are efficient and accurate. We ensure precise alignment for fastening systems, bolt connections, and assembly components. Our drilling operations also support multi-axis machining, allowing for angled hole formations and countersunk bores in a single setup.
Countersink: Fastener Integration and Burr Removal
A countersink is a conical recess machined into steel to all bolts, screws, or rivets to sit flush with, or below, the material’s surface. This process is essential in applications requiring aerodynamic efficiency, improved aesthetics, and reduced stress concentration at the fastener location.
At Infra-Metal, we utilize countersinking tools with controlled depth adjustment to ensure uniform results across multiple components. Additionally, countersinking can serve as a secondary function of deburring drilled holes, preventing sharp edges or stress fractures that can lead to material fatigue over time.
Counterbore: Deep-Wall Machining for High-Load Applications
A counterbore is a cylindrical, flat-bottomed recess that is machined to enlarge a pre-drilled hole, allowing fastener heads to sit flush with the steel surface. Unlike a countersink, a counterbore retains straight walls, which is crucial for high-load applications requiring fastener engagement. We utilize solid carbide counterbore tools to guarantee precision across various steel thicknesses. This ensures consistency in hole depth and diameter, which is important for applications such as structural framing, heavy machinery assembly, and high-stress bolted connections where uniformity in fastening is required for load distribution and shear resistance.
Reaming: Hole Refinement for Precision Fitment
Reaming is a material-removal process that enlarges and smooths pre-existing drilled holes to achieve tight dimensional tolerances. This process is essential when the fit between a bolt, shaft, or pin and its corresponding hole must be precise to prevent misalignment or excessive play. At Infra-Metal, we employ high-speed steel (HSS) and carbide reamers with various flute geometries, including straight and helical flutes, to accommodate different material properties.
Tapping: Internal Thread Machining for Secure Fastening
Tapping can be used to form internal threads within a pre-drilled or reamed hole, which allows for the secure insertion of bolts, screws, or studs. We utilize CNC-controlled tapping machines that are equipped with rigid tapping spindles to guarantee thread pitch accuracy and depth consistency across multiple workpieces and ensure secure fastening connections in structural applications.
Milling: Advanced Machining for Custom Structural Components
Milling is a multi-functional machining process used to cut slots, machine flat surfaces, and create complex geometric shapes in steel components. Our high-speed milling machines feature CNC-controlled multi-axis heads to allow for precise edge trimming, face milling, and hole interpolation. Interpolation milling can achieve tight tolerances where standard drilling is insufficient.
This process can be used with reinforced brackets, base plates, and structural connectors that require precision fitment to prevent misalignment, stress fractures, or welding inconsistencies.
Choose Infra-Metals for Precision Steel Drilling Services
When you need precise and reliable steel drilling services, look no further than Infra-Metals. We leverage advanced metal drilling techniques and equipment, along with the skills of experienced manufacturing experts, to meet a range of project requirements. Our state-of-the-art facilities include a dedicated structural steel service center, backing our commitment to delivering exceptional work for every project.
Request a quote to learn more about our metal drilling capacities. Let Infra-Metals be your trusted partner for precision machining.