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What is a cemented carbide round bar blank?
time：
2025-06-24 09:10
source：
Lizhou
Cemented carbide blanks are semi-finished materials made by combining tungsten carbide with metal binders such as cobalt through powder metallurgy.
These materials are known for their extremely high hardness, wear resistance, and corrosion resistance, and are widely used in machining, mold manufacturing, mining tools, and other fields.
What is the difference between cemented carbide blank rods and finished rods?
1. Material and processing stage
Blank rods are in their primary, unpolished form, with a rough surface but retaining a high-density base material, making them suitable for subsequent customized processing.
Finished rods have undergone precision grinding and coating treatment and can be used directly in high-precision equipment.
2. Usage scenarios and advantages
Blank rods: Lower cost, suitable for customers who need secondary processing (such as cutting, welding), and higher flexibility.
Finished rods: Ready to use, saving time, but at a higher unit price.
3. Performance characteristics
The original structure of cemented carbide blank rod products can better adapt to extreme conditions (such as high temperature and high pressure), while finished products are superior in surface finish and dimensional accuracy.
Why choose a professional tungsten carbide alloy supplier?
- Technical guarantee ：
High-quality suppliers use strict sintering processes to ensure uniform tungsten carbide density and the absence of internal defects.
- Custom services ：
Blanks can be provided in different diameters, lengths, and component ratios (such as cobalt content 6%-15% ).
- Cost optimization :
Reducing intermediate processing steps and directly purchasing blanks can reduce production costs by 20%-30% 。
How to choose the cobalt content of cemented carbide according to processing needs?
The properties of cemented carbide are closely related to its cobalt ( Co ) content. Cobalt, as a binder, directly affects the material's hardness, toughness, wear resistance, and impact resistance. The following are key considerations for choosing cobalt content:
1. Type of material being processed
High-hardness materials (such as quenched steel, titanium alloys) ：
Choose low cobalt content ( 6%-8% ) tungsten carbide alloys. Low cobalt content increases tungsten carbide density, enhancing hardness and wear resistance, suitable for fine processing or high wear resistance scenarios. Materials requiring high toughness (such as cast iron, stainless steel)
Use ：
medium to high cobalt content ( 10%-15% ) cemented carbide. Higher cobalt content improves material toughness, reducing the risk of chipping, suitable for intermittent cutting or high-impact conditions. ) tungsten carbide alloys. Low cobalt content increases tungsten carbide density, enhancing hardness and wear resistance, suitable for fine processing or high wear resistance scenarios. Processing conditions and load
2. High temperature or high pressure environment
Low-cobalt cemented carbide is more resistant to high-temperature softening due to its high hardness, but should avoid severe impact. ：
High impact or vibration load
High cobalt content ( ：
) increases the strength of the binder phase, absorbing more impact energy and extending tool life. ≥12% Cemented carbide, with
the high hardness of tungsten carbide and the toughness of cobalt as its core, has become an irreplaceable “ performance cornerstone in industrial manufacturing. Whether it's the flexible processing advantages of blank rods or the precise matching of cobalt content ( ”。
), the essence lies in 6%-15% balancing efficiency and cost matching scenarios and performance ， Choosing a professional tungsten carbide alloy supplier not only provides 。
high-density, defect-free blank base materials , but also allows for customized cobalt ratio schemes to achieve increased tool life and 30% reduced production costs 、 above. 20%-30% 的双重目标。
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