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FAQ
What is the main component of cemented carbide?
The main component is tungsten carbide (WC), which becomes cemented carbide after bonding with metallic binders such as cobalt and nickel.
Additives such as chromium (Cr) are added to these alloys to create cemented carbides with various characteristics.
Q&A in the same category in this question
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What is the difference between cemented carbide and HSS?
Cemented carbide is an alloy with high hardness, heat resistance and strength. HSS, on the other hand, generally has relatively lower strength and heat resistance, but has higher impact resistance.
As their raw materials and manufacturing methods differ, there is a significant difference in costs between the two materials.
Selecting the suitable material is recommended though considering the application and the timing of replacement after installation.
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What is the relationship between hardness and strength?
Hardness affects resistance to abrasion, and harder the material the more resistant it is to abrasion.
However, amount of abrasion is not only determined by hardness, but could be affected by adhesions caused by workpieces of certain materials.
Thickness also affects the life of material, and so the environment and manufacturing process must be taken into consideration when selecting cemented carbide grade.
There are many factors related to strength, such as transverse rupture strength, impact strength, fracture toughness value and others, therefore material selection must be made in consideration of these factors. -
What are the weaknesses of cemented carbides?
Compared to general iron alloys, cemented carbide has lower toughness, which may cause chipping or peeling of the cutting edge.
In addition, as the relative density is about twice that of iron, the heavier weight of cemented carbide may be a disadvantage.
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