M35 Step Twist Drill, Cobalt Content Straight Shank Drill 12mm), For Iron, Stainless Steel, Steel Drilling

Description

Product Introduction
This 12mm M35 cobalt containing straight shank Fried Dough Twists drill produced by VANGUARD INDUSTRIAL is a high-performance cutting tool specially designed for drilling high hardness metal:
Material characteristics: Made of M35 high cobalt high-speed steel, the addition of cobalt element greatly refines the grain size of the steel, giving the drill bit excellent toughness, wear resistance, and red hardness. It can maintain a sharp edge even under high temperature conditions during high-speed drilling, and is not easy to break or roll.
Structural advantages: The standard straight handle design is suitable for the vast majority of conventional drilling equipment, and the spiral chip removal groove has been optimized for smooth chip removal without easy blockage. The overall rigidity is strong, and it is not easy to deviate during the drilling process. The processed holes have high precision and smooth edges.
Applicable scenarios: It is specifically designed for drilling operations on high-strength metal materials such as iron, stainless steel, and structural steel. It is also compatible with drilling common metals such as aluminum alloys and galvanized pipes. It is a commonly used and efficient tool for hardware processing, equipment maintenance, and engineering installation scenarios.
🛠️ Usage
preliminary preparation
According to the diameter of the 12mm drill bit, mark the drilling points on the workpiece to be processed, and prioritize using the center drill to create positioning pits at the marked points to avoid slipping and deviation of the drill bit during initial drilling; At the same time, clean the burrs and debris on the surface of the workpiece, firmly clamp and fix the workpiece to prevent displacement during the drilling process.
Clamping and debugging
Fully insert the straight shank of the drill bit into the drill chuck, ensuring that the clamping length reaches 4-5 times the diameter of the drill bit. After clamping, confirm that the outer circumferential runout accuracy of the drill bit during rotation is controlled within 0.03mm to avoid problems such as large hole diameter and drill bit fracture caused by lack of concentricity.
Drilling operation
Adjust the equipment speed to the medium to low speed range suitable for metal drilling, align with the pre drilled positioning pit and smoothly drill down, while maintaining a uniform and stable feed rate; If drilling on hard materials such as stainless steel, it is recommended to use metal cutting fluid for continuous cooling to avoid overheating and annealing of the drill bit; When the drill bit is about to drill through the workpiece, adjust the feed rate appropriately to prevent the drill bit from being stuck and damaged by suddenly ejected chips.
Final maintenance
After drilling is completed, promptly clean the residual chips in the spiral groove of the drill bit, use a magnifying glass of about 40 times to check the wear of the cutting edge, and perform standardized grinding in a timely manner if slight wear occurs, which can greatly extend the overall service life of the drill bit. When storing for a long time, put the drill bit in a special packaging box to avoid collision and damage between the cutting edges.