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How are cemented carbide blades made?
time：
2025-07-02 08:38
source：
Lizhou
Do you know what the small steel pieces in machine tools “ that cut iron like mud ” are made of?
That's right, it is —— hard alloy blades ！
This super material with tungsten carbide as its core, has a hardness 3 times that of steel! It is not only super wear-resistant and super high-temperature resistant ，but also known as the “ industrial teeth of modern manufacturing ”。
How are hard alloy blades made?
① Mixing Powder Formula —— Laying the “ Foundation ”
First, we precisely mix tungsten carbide powder and cobalt and other metal binders . This ratio is crucial, just like kneading dough, determining the hardness and toughness of the blade 。
② Pressing and Shaping —— Transformation into “ Small Steel Cakes ”
Next, the powder is placed in a mold and pressed under high pressure to form the prototype of the blade . At this time, the blade is like a brittle biscuit, and in the industry it is called —— “ green compact ”。
③ High-Temperature Sintering —— A crucial step for qualitative change!
Then, the green compact is sent to a high-temperature sintering furnace with a temperature as high as 1500℃ . Here, the powder particles begin to melt and reorganize, and the volume shrinks by almost half, eventually becoming hard and dense, like a rock! This is what we call a whole hard alloy blade 。
④ Precision Grinding —— Polishing to a Sharp “ Edge ”
Then, the blade undergoes precision grinding with a diamond grinding wheel . The edge precision can reach the micrometer level, ** finer than a hair 70 ! ** Each cutting edge is precise to the extreme.
⑤ Super Coating —— Clad in “ Golden Armor ”
The last step, which is also crucial. We use CVD or PVD coating technology to coat the blade surface with a layer of ** titanium nitride ( TiN ) ** and other super wear-resistant coatings. Why coating? The answer is simple:
The blade life is immediately extended 3 to 5 !
Not only is it more wear-resistant, but it also effectively resists oxidation and high temperatures.
What are hard alloy turning blades?
When you are machining cylindrical parts on a lathe, who is silently exerting force?
It is —— hard alloy turning blades!
These “ small steel pieces ” are specifically used for turning rotating workpieces, and have a unique cutting edge design that makes cutting fast and accurate.
What's so great about turning blades?
Indexable Design ：
One blade has multiple cutting edges. When one becomes dull, just turn it slightly to immediately use a new cutting edge , saving time and money.
Quick Change, Modular Assembly ：
Installing the blade is as simple as changing a battery. It takes only a few seconds, directly reducing downtime 90%！
Material Specific, Diverse Types ：
No matter whether you are processing steel, cast iron, stainless steel, or titanium alloy , we have hard alloy cutting blades with different chip breakers and coatings 硬质合金切削刀片 for you to choose from.
From a handful of powder to a shining blade
Each Cemented carbide tool bits , embody the wisdom of materials science and precision manufacturing. They are the “ sharp teeth ” , driving the manufacturing industry forward.
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