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Direct supply from carbide manufacturers: all types of tungsten steel round bars, plates, and molds—available in stock!
time：
2026-02-07 11:13
source：
Lizhou
In the manufacturing of end mills, drills, reamers, taps, and various types of precision cutting tools, tungsten carbide round bars are the most critical—and yet often the most underestimated—material. Many machining problems that appear to stem from improper tool design or incorrect parameters actually originate in the round bars themselves: uneven microstructure, fluctuating hardness, and batch-to-batch variations can all directly affect the stability of subsequent machining processes.
As a company that has long been focused on Cemented carbide As we’ve discovered in our actual customer service experience, selecting the right tungsten steel round bars can often significantly extend tool life. 20%-30% The scrap rate has significantly decreased.
What kind of tungsten steel round bars are suitable for making cutting tools?
A tungsten steel round bar truly suitable for tool manufacturing must meet at least three requirements:
1. Uniform organization, stable batches
Whether the grain distribution inside the round bar is uniform directly determines whether it’s prone to chipping or hidden cracks during grinding. We employ stable powder formulations and well-established sintering processes, ensuring consistent product quality across long-term mass production runs and avoiding the situation where “this batch works great, but the next batch is difficult to grind.”
2. Balance between hardness and toughness
It's not the case that the higher the hardness, the better.
In tool applications, materials that are too hard tend to become brittle and crack easily, while those that are too soft lack wear resistance. We offer a variety of tungsten steel round bar solutions tailored to different applications—such as general-purpose steel parts, stainless steel, and die steels—ensuring that material properties perfectly match actual operating conditions.
3. Easy to grind and easy to machine
Many customers have reported that, with the same parameters, some round bars grind smoothly, while others tend to get burned or develop surface markings.
This is often related to internal stresses and density within the material. We implemented targeted controls during the sintering and post-processing stages, ensuring greater stability of the round bars during the grinding phase and reducing processing abnormalities.
Where are tungsten steel round bars mainly used?
Our tungsten steel round bars are widely used in:
End mills, ball-end mills, drills, reamers
Precision tools such as taps and chamfering tools
Some wear-resistant parts and mold inserts
Especially in tool manufacturers, mold factories, and precision machining enterprises, the stability of round bars often directly affects the consistency of an entire batch of tools.
What are the advantages of LiZhou’s direct supply of tungsten steel round bars made from cemented carbide?
From the perspective of processing plants, direct supply from manufacturers brings not just “lower prices,” but also greater controllability:
Complete specifications; commonly used sizes in stock.
Batch stability, suitable for long-term repetitive production.
Supports custom lengths, tolerances, and grades.
Technical communication is direct, and after-sales support is guaranteed.
When it comes to after-sales issues, we place greater emphasis on “being able to solve problems.”
We don’t view after-sales service merely as returns or exchanges; rather, when customers encounter issues during grinding or use, we work together to determine whether the problem stems from the material, the manufacturing process, or the parameters themselves. Many of our long-term cooperative clients started by testing just a small batch of tungsten steel round bars and gradually established a stable supply relationship.
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