Stainless Steel Round Bar In Mumbai | Maha Bhairav Stainless Steel
Stainless Steel Round Bar | Maha Bhairav Stainless Steel In Mumbai
Important Metal Drilling Tips to Remember
For Stainless Steel Round Bar Contact Maha Bhairav Stainless Steel In Mumbai
Many applications, usually involving either mounting parts or routing wiring and other materials, require holes to be drilled or punched into sheet metal. As with any other typical fabrication task, there isn’t always a right or wrong way to do the job. But, sometimes there is a better way.
If possible, use a vise to secure the metal you’re going to drill. If that’s not possible, you need to have some means of keeping the metal stable so that it won’t move, as you’ll need both hands to operate the drill properly.
Slowly pull the trigger until the bit gains rotational speed being careful to keep it on target. Ultimately, the drill bit will win the contest and you’ll have bored that hole.
Switch bits and begin again if needed to finish off the final hole. Add more lubrication often. Stainless does not conduct hear well so the tip of the “drill bit” will get very hot, very quickly.
When drilling metal, the surface is often slippery. There’s a good chance your drill bit might slip off on your first try, leaving a big scratch and making you angrily throw away your drilling machine. In order to prevent this, first use a sharp object to make a dimple.
When the heat stays in the drill, the tool itself will begin to break down. In high-speed steel (HSS) drills, this heat will cause the tool to lose its hardness. In solid-carbide drills, microcracks can form on the cutting edges, which will eventually cause the drill to fail.
Run out is when the drill bit does not spin perfectly on the axis. Usually its the result of the drill bit being slightly crooked relative to the spindle so the longer the drill bit or the farther out in the chuck it held, the worse the run out becomes.
Every drill press has some degree of running out. High-quality drill presses generally have less run out on average than cheap drill presses. Excess runs out shortens the life of your drill bits and causes oversized or out of round holes.
You’ll achieve a much more accurate hole when metal drilling if you punch the hole first. This eliminates the possibility of the drill slipping on the metal, putting the hole in the wrong place.
The punched hole doesn’t need to be large. It just needs to be big enough for the tip of the drill. This will act as a guide and will help ensure that you have a square hole.
Once the hole centers are marked with ink or scribed crosshairs, use a center punch to strike each location. The dimples left by the center punch serve to guide drill bits and punch tips to prevent them from walking or wandering across the sheet metal surface.
Much of the time you need to drill slowly, as this gives more control and allows you to hold the drill more steadily. Because it’s easy for metal surfaces to buckle, the control is important.
As a general rule, you should never go faster than the middle speed when metal drilling. Going more slowly is also safer as the drill is less likely to slip and cause an injury.
Never ever hold a sheet-metal workpiece in your hands when drilling, and always clamp it down when you can. When setting up clamps or hold-downs, anticipate that a drill bit will catch and grab the workpiece.
And adjust your clamps to ensure that the metal cannot spin. What do you get when spinning sheet metal meets human flesh? A bad day if you’re lucky, a trip to the hospital if you’re not.
Knowing the correct bits to use when metal drilling will make the job a great deal easier. For soft metals, you should ideally use a step drill bit or a cone drill bit for the best results.
Both of these allow you to drill to different diameters; it all depends on how deep you drill. Where you’re not using one of these types of drill bits, start with a thin bit and work up to larger ones to increase the hole’s diameter.
Cooling is very important, especially when drilling hard metals like stainless steel since one property of stainless steel is that it gets harder when heated.
Drilling metal gets both the drill bit and the material extremely hot If you’re not cooling, the material will harden and drilling will get tougher and tougher. By using special cutting oil, you’ll be cooling both material and drill.
You should never drill metal without having proper safety equipment. Safety goggles, not glasses, are vital to stop small slivers of metal from entering your eyes; the glasses don’t offer adequate protection.
Not only is a backer board a good idea for reducing tear out, but it helps guide a hole saw’s pilot bit, keeping the tool aligned. When using larger saws on tougher material.
Cutting fluid can help make the job go easier and prolong the saw’s life. Manufacturers will usually provide a table of recommended RPMs according to hole size and the material being cut.
Gloves also help to protect your hands, although they’re not always compatible with the kind of fine control you need when metal drilling. Whenever possible, you should wear them.
To use a portable hand punch, first select and install a matching punch and die set. Align the point of the punch over a soon-to-be-hole’s center, and squeeze the tool’s handles together.
Once the punch clears through the sheet, a small slug will drop free and then the tool can be removed. Punched holes have relatively clean edges that require little to no finishing.
Rigidity in this application is the strength of the drill press to hold the drill bit and the shoe in the same position relative to each other. A good illustration of the lack of rigidity is when a drill bit “walks”. Poor rigidity makes run out worse, makes the setup prone to chatter, and makes it difficult to drill a hole where you want to drill a hole.
