brocas para metal hierro fundido acero inoxidable alum set con caja de metal 13p

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brocas para metal hierro fundido acero inoxidable alum set con caja de metal 13p
Descripción
COBALT STEEL - Manufactured from M35 cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit.
135°SPLIT POINT - the 135°quick-cut split point are self-centering and able to penetrate metals quickly with less pressure, prevent bits from "walking and wanding". Easy cutting without need of center punch.
FOR METALWORKING - Particularly successful in cutting through hard metals(hardness less than HRC38°) such as stainless steel and cast iron, although they can be used for softer materials like copper and aluminium, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate.
13PC METRIC SET - The set includes 13pcs of M35 cobalt steel twist drill bits: 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm. Well organized in a metal indexed storage case for easy transport to your worksite.
DOWNLOADABLE USER GUIDE - We've summed up some tips of drilling metals, including a RPM chart for several common metals, based on our reviews and some articles on the internet. In most cases, our customers would get a much better result with these tips. Welcome to download.
Product Description
Drill Bit for Metalworking
About Hymnorq Brand
"Hymnorq" is a registered brand hold and exclusively sold by Migiwata Company, a famaliy owned and operated business selling quality products.
We've been always standing by every piece of product sold from our store.
PS: A few packages of our products in stock were labelled as Migiwata brand.
Hymnorq M35 5% Cobalt Steel Twist Drill Bits Set
A nice-to-have metric bit set for repeated drilling in metals
M35 Grade Cobalt Steel -
Cobalt drill bits are not made of pure cobalt, but rather a steel alloy with certain percent cobalt. The 5-percent alloy is known as M35 grade. The cobalt increases the strength of the steel and makes it more heat-resistant.
Lowest Cost Per Hole Drilled -
Cobalt bits are more expensive than ordinary HSS drill bits. But if you regularly drill metals, they are a good investment since they tend to last longer. With an extended life, you can lower cost per hole drilled.
Tech Tip 1: You shouldn’t drill deeper than 1/2 of the drill bit’s fluting length to have the best drilling performance.
Tech Tip 2: Don't use M35 cabalt bits on hardened steel, high carbon steel and heat treated steel.
Key Features
135 Degree Split Point
135 degree means less force required to remove metal, compared with lower angles like 90° and 118°.
Self-centering split point allows you to drill directly to the size needed without any pre-drilling.
Twist Drill Bit Body
Heavy-duty, fully ground body construction.
High flow spiral design for the fastest removal rate and for thick material.
Straight Shank
Straight shank for standard drill chuck, less "walk“ or ”wander“.
The end of shank is chamfered to allow easy and firm holding.
Special bronze SST heat and surface treatment.
Make Most of Cobalt Drill Bits with These Tips
Be Vertical
Keep the drill bit vertical with the stuff's surface to be drilled.
Tilted bit is prone to break during drilling.
Be sure to make both the bit and the workpiece stable.
Do It Slow
Drilling metal requires low RPM. Please use a device of which the drilling speed can be adjusted.
Be careful when you use an electric drill. The RPM could be set too high.
The thicker the bit, the slower speed should be.
If you're not sure, please start from the lowest RPM and pressure.
Stay Cool
Friction between bit and metal will accumulate an amount of heat.
It's necessary to use cooling liquid during drilling to keep the bit cool. Otherwise, the bit may fry(melt) or only last a short time.
It's both ok to use lubricant oil and to pour water.
Right Drilling Device
It's highly recommended that you use a drill press to drill thick metals. It's stable, powerful and (RPM) adjustable.
If a drill press isn't available, electric drill or charging drill will do the job, too. However, it's more likely you'll meet problems unless you're really experienced.
Measurement System
Metric
Fractional Inch
Fractional Inch
Metric
Fractional Inch
Metric
5% Cobalt Steel
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Organizer
Metal Index Case
Metal Index Case
ABS Plastic Index Case
ABS Plastic Index Case
ABS Plastic Index Case
Metal Index Case
Size Range
1.5mm - 6.5mm
1/16" - 1/4"
1/16" - 3/8"
1.5mm - 10mm
1/16" - 1/2"
1.0mm - 10mm
135º Split Point
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Manufacturing Standard
German DIN338
German DIN338
German DIN338
German DIN338
German DIN338
German DIN338
Manufacturing Technology
Fully Ground
Fully Ground
Fully Ground
Fully Ground
Fully Ground
Fully Ground
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