How does the machinability of tungsten-based high gravity alloy compare with other materials?

Tungsten base high specific gravity alloy is an important structural material, with high specific gravity, 

excellent physical and chemical properties, widely used in aerospace, nuclear energy, electronics, metallurgy 

and other fields. In terms of machinability, tungsten base high ratio coincidence gold has the following 

characteristics compared with other materials:

First of all, the processability of tungsten-based high-gravity alloys is limited by their high hardness and 

high melting point. The hardness of tungsten-based high-gravity alloy is very high, and its hardness can 

reach HRC60 or more, even higher than most metal materials. This means that tools such as high-speed 

steel, carbide cutting tools or polycrystalline diamond grinding wheels need to be used in the processing

process to cut and grind, which increases the processing difficulty and tool cost. In addition, the melting 

point of tungsten-based high specific gravity alloy is also high, about 3410 ° C, which makes it necessary 

to use special processes such as high temperature sintering and high-frequency induction heating during 

processing, increasing the requirements and energy consumption of processing equipment.

Secondly, the machinability of tungsten base high specific gravity alloy is affected by its brittleness and 

difficult to cut. Tungsten base high specific gravity alloy has low plasticity and toughness, easy to fracture, 

crack and deformation and other defects, so in the processing process need to strictly control the processing 

parameters and operation mode, to avoid excessive cutting force and temperature damage to the material. 

At the same time, due to the complexity and hard brittleness of the lattice structure, the tungsten-based high 

gravity alloy is difficult to carry out ordinary cutting processing, and it is usually necessary to use non-traditional 

methods such as electric discharge machining, laser processing or grinding to carry out precision machining.

Thirdly, the machinability of tungsten base high specific gravity alloy is also limited by its high coefficient of thermal 

expansion. Tungsten base high specific gravity alloy has a high coefficient of thermal expansion, and its volume will 

change significantly with the increase of temperature, which puts forward higher requirements for machining accuracy 

and size control. It is necessary to take appropriate temperature control, cooling measures and thermal compensation 

methods to reduce thermal stress and avoid material deformation and dimensional deviation during processing.

In addition, the machinability of tungsten-based high specific gravity alloys is also affected by their high chemical 

activity. Tungsten base high specific gravity alloy is easy to react with oxygen, nitrogen, hydrogen and other elements 

in high temperature and oxidation environment to form compounds such as oxides, nitrates and water. This puts higher 

requirements on processing processes and equipment, which need to be processed in a vacuum, inert atmosphere or 

protective liquid to avoid losses such as oxidation and decarbonization of the material surface.

To sum up, tungsten base high ratio coevent metal has certain difficulties and limitations on the machinability of 

other materials, mainly including the limitations of high hardness and high melting point, the influence of brittleness 

and difficult machinability, the limitation of thermal expansion coefficient and the influence of high chemical activity. 

However, with the continuous improvement of processing technology and process, the machinability of tungsten-based 

high specific gravity alloys has been improved to a certain extent, and can meet the needs of various special and high-end 

applications.