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High specific gravity tungsten alloy material is a kind of alloy with tungsten as the matrix (W content 85-99%) and added with elements such as Ni, Cu, Co, Mo, Cr. According to alloy composition characteristics and uses, it can be divided into main series such as W-Ni-Fe, W-Ni-Cu, W-Co, W-WC-Cu, W-Ag, and its density is between 16.5-19.0g/cm3 Adjustable. Generally, large and special-shaped parts are produced by isostatic pressing technology, small products are produced by mould pressing, extrusion and injection moulding technology, and bars and sheets are produced and processed by forging and rolling.
Advantage:
Specific gravity: general specific gravity is 16.5-18.75g/cm3;
High strength: the tensile strength is 700-1000Mpa;
Strong ability to absorb rays: its ability is 30-40% higher than that of lead, and it is not harmful to the environment and health;
Large thermal conductivity: 5 times that of die steel;
Small thermal expansion coefficient: only 1/2-1/3 of iron or steel, good electrical conductivity;
It has good weldability and easy cutting.
Use:
Mainly used as aerospace gyro rotor, counterweight, shock absorption device, conventional weapon armor-piercing projectile core, radiation shielding device and components, die-casting molds for mechanical manufacturing, flywheels and automatic watch pendulums, etc., electrical equipment Counterweights such as contacts and electrodes.
Brand and physical properties
|
Brand |
Nominal tungsten content % |
Density g/cm3 |
Hardness Rockwell C |
Tensile strength MPa |
Elongation % |
|
THA1 |
90 |
16.85-17.25 |
24-32 |
700-1200(600-800) |
20-33(4-8) |
|
THA2 |
92.5 |
17.15-17.85 |
25-30 |
700-1400(500-600) |
15-25(3-5) |
|
THA3 |
95 |
17.75-18.35 |
25-35 |
700-1200 |
8-15 |
|
THA4 |
97 |
18.25-18.85 |
30-35 |
600-1000 |
8-14 |
Metal Injection Molding (MIM) technology produces high-density alloy products
Metal and ceramic powder injection molding technology is a new type of manufacturing technology that combines powder metallurgy technology with plastic injection molding technology. This process technology is suitable for mass production of small, precise, complex and cermet parts with special performance requirements. Our company uses this technology to produce various specifications of high-density alloy products.
MIM process characteristics:
1. The degree of freedom of the geometric shape of the parts is high, the density of each part of the product is uniform, and the dimensional accuracy is high. It is suitable for manufacturing small parts with complex and precise geometric shapes and special requirements (0.05g-200g);
2. The alloying flexibility is good, and the manufacturing cost can be reduced for materials that are too hard, too brittle, and difficult to cut or parts with segregation or contamination during the casting of raw materials;
3. The product quality is stable, the performance is reliable, the relative density of the product can reach 92-98%, and can be carburized, quenched, tempered and other treatments;
4. The typical tolerance of machined parts is ±0.05mm;
5. The process flow is short, the production efficiency is high, and it is easy to realize mass and large-scale production.
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