1、 The core impact of rising raw material prices on alloy cutting aluminum saw blades
1. Price transmission: cost surge and terminal price increase
The price of core raw materials has skyrocketed: the cutting edge of alloy aluminum saw blades is composed of tungsten carbide (WC) and cobalt (Co), with tungsten powder/tungsten carbide powder increasing by 459.1% in one year and cobalt powder increasing by 245.2%. Tungsten raw materials account for more than 85% of the cost of hard alloys
The price of finished products has significantly increased: the industry has generally raised prices by more than 50%, and some companies have raised prices in stages due to inventory differences. The cost of alloy materials has increased by 60% within one year+
Small and medium-sized manufacturers are under greater pressure: facing a 24.6% increase in procurement costs and encountering quota restrictions, they are forced to accept spot premium purchases of over 30%
2. Supply side: stockouts and extended delivery times
Top alloy suppliers implement strict quota management, and small and medium-sized saw blade factories often encounter supply interruption risks
Global tungsten resources are depleted, supply and demand imbalances are worsening, and delivery cycles are generally extended by 2-4 weeks
The frequency of price fluctuations has increased, with an increase of up to 40% within one month, making it difficult for companies to maintain stable pricing
3. Product structure adjustment
The proportion of high-end nano coated saw blades has increased, offsetting unit price increases by extending their lifespan
Promotion and acceleration of ultra-thin saw blades (0.5-0.6mm) to reduce material loss and cutting resistance
Some companies have launched economical products to control costs by optimizing blade design and reducing alloy usage
Below is a set of simple, practical, and factory accessible methods specifically designed for alloy cutting aluminum saw blades, sorted by importance. Following these methods can significantly extend their lifespan.
1、 Usage and operation (most directly affecting lifespan)
Dry cutting is strictly prohibited and cutting fluid/trace lubrication must be used
Dry cutting can cause rapid annealing, aluminum adhesion, and tooth breakage of the saw teeth.
Using specialized aluminum cutting oil/emulsion or micro lubricating MQL can increase the lifespan by 30% to 100%.
Control the feed rate, do not cut forcefully or quickly
Feed too fast → high force on serrations → tooth breakage, tooth loss, and accelerated wear.
Thick materials can be fed slowly, while thin materials can be fed slightly faster, maintaining a steady and uniform speed.
Avoid mid way pauses and repeated sawing
Pausing will cause local high temperatures in the saw blade, and repeated friction will burn the blade.
Try to cut through at once.
Do not cut materials that exceed the specifications of the saw blade
Cutting ultra hard aluminum, excessive wall thickness of profiles, and excessive cutting area will significantly shorten the lifespan.
2、 Equipment accuracy (often overlooked, but crucial)
The spindle runout should be small
The radial runout of the spindle is large → the saw blade sways left and right → the sawtooth is severely worn on one side.
Standard: ≤ 0.01mm.
The flange should be flat, clean, and clamped tightly
Flange deformation, aluminum shavings, oil stains → saw blade deflection → lifespan halved.
Clean the flange every time it is mounted.
The pressing material should be stable and not vibrate
Material vibration can impact the sawtooth and cause tooth breakage.
3、 Blade maintenance (can grind multiple times, saving a lot of money)
Timely clean the sticky aluminum
Aluminum chips stick to the gaps between teeth → chip difference → temperature rise → accelerated wear.
Clean with copper brush/specialized cleaning agent, do not use wire brush to hard brush alloy teeth.
Immediately grind if these signals appear, do not force it
The burr on the incision becomes larger
Cutting sound becomes sharper and louder
Resistance increases, motor heats up
Blackening of the cut surface and sticking of the knife
Wait until the broken tooth is repaired, it will be useless.
Find a professional grinder, don't grind casually
Regular grinding:
Repair the front and rear corners
Correct the stress and flatness of the saw blade
The cost of one-time grinding is low, and one saw blade can be repaired 5-10 times, doubling its lifespan directly.
4、 Selection matching (choosing the right saw blade is more important than saving on purchase price)
Tooth number matching
Thick/solid aluminum: few teeth (good chip removal)
Thin material/profile: multi tooth (smooth cut surface)
The number of teeth is incorrect, and the wear is particularly fast.
thickness selection
If you can use ultra-thin saw blades, you don't need thick ones. They have less resistance, less heat generation, and longer lifespan.
Prioritize selecting saw blades with coatings
Coatings (ALTIN, TIN, etc.) can reduce aluminum adhesion, lower friction, and significantly improve lifespan.
5、 Environment and Storage
When not in use, place it flat or hanging it, and do not stack or collide it.
Avoid damp, acidic and alkaline environments to prevent rusting of the blade body.
6、 The simplest and most direct summary (just follow it)
Cooling and lubrication are necessary, and dry cutting is strictly prohibited
Cutting at a constant speed, without rushing or stopping
The spindle and flange should be precise and clean
Clean the aluminum adhesive in a timely manner, and immediately grind any burrs
Choose the right number of teeth, thickness, and coating for the saw blade
By achieving these 5 points, the lifespan of the saw blade can generally be increased by 50% to 200%.