Titanium countersunk head bolt is a countersunk head bolt made of titanium alloy, which is suitable for aerospace, marine, automobile, motorcycle, and other fields. Titanium alloys have excellent properties such as high strength, low density, and corrosion resistance, so titanium countersunk bolt can achieve weight reduction, corrosion resistance, and improved mechanical properties. The counting head design allows the bolt to level the surface, avoiding bumps and damage. Titanium countersunk bolt is widely used in the aviation industry, especially in environments of high speed, high temperature, and high pressure.
1. Titanium countersunk head screw has the following physical and chemical properties
1) Physical properties
- Density: 4.5g/cm³, about 60% lighter than steel
- Strength: Higher toughness than steel, suitable for high-strength occasions
- Coefficient of thermal expansion: low coefficient of thermal expansion, not easily affected by temperature deformation
- Corrosion resistance: It has excellent corrosion resistance and can resist most acids, alkalis and other chemical corrosion
- Thermal conductivity: good thermal conductivity
- Magnetic: Non-magnetic
2) Chemical properties
- Chemical stability: It has excellent chemical stability, and is not easy to be oxidized, discolored, and tasted, etc.
- Corrosion resistance: It has excellent corrosion resistance and can withstand strong corrosive media such as soda ash, concentrated sulfuric acid, and hydrochloric acid at room temperature.
- Welding performance: It can be welded by argon arc welding, electron beam welding, plasma welding, and other welding methods.
- Biocompatibility: It has good biocompatibility and is widely used in the medical field.
|
Grade |
Gr1 |
Gr2 |
Gr3 |
Gr4 |
Gr5 |
Gr7 |
Gr9 |
Gr12 |
|
N |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
|
C |
0.08 |
0.08 |
0.08 |
0.08 |
0.08 |
0.08 |
0.08 |
0.08 |
|
H |
0.015 |
0.015 |
0.015 |
0.015 |
0.015 |
0.015 |
0.015 |
0.015 |
|
Fe |
0.2 |
0.3 |
0.3 |
0.5 |
0.4 |
0.3 |
0.25 |
0.3 |
|
O |
0.18 |
0.25 |
0.35 |
0.4 |
0.2 |
0.25 |
0.15 |
0.25 |
|
Al |
|
|
|
|
5.5~6.75 |
|
2.5~3.5 |
|
|
V |
|
|
|
|
3.5~4.5 |
|
2.0~3.0 |
|
|
Pa |
|
|
|
|
|
0.12~0.25 |
|
|
|
Mo |
|
|
|
|
|
|
|
0.2~0.4 |
|
Ni |
|
|
|
|
|
|
|
0.6~0.9 |
|
Ti |
balance |
balance |
balance |
balance |
balance |
balance |
balance |
balance |
The above are the main physical and chemical properties of titanium countersunk bolt.
2. Production Process
The processing flow of titanium countersunk head bolt can be simply divided into the following steps:
1) Raw material preparation: select the appropriate titanium alloy material, cut or forge it into a preform according to the size required by the project.
2) Turning processing: the preform is turned into a head and the threaded part of a suitable shape by lathes, CNC machine tools and other equipment.
3) Process the following specific shapes: For this Countersunk Head Bolt, it is necessary to process the flat bottom hole. This step can be done by CNC machine tools and machining centers.
4) Deburring: After fine machining, there will be burrs, use grinding tools to remove burrs.
5) Quality inspection: Various inspections are carried out on the processed bolts, such as dimension measurement, appearance inspection, etc., and the surface is treated.
6) Packaging: Qualified products are packaged for sale.
This is a general processing flow, in fact, there are some other details, depending on the specific requirements of the product.
3. Titanium countersunk head screw has the following advantages
1) High Strength: Titanium alloy is a lightweight and high-strength material, which has higher strength and hardness than traditional steel.
2) Good corrosion resistance: Titanium alloy has good corrosion resistance in the atmosphere, water, acid, alkali, and other environments, so it is suitable for various harsh environments.
3) Lightweight: Compared with traditional steel bolts, titanium alloy bolts are lighter in weight, so they are suitable for occasions with high weight requirements.
4) Good high-temperature resistance: Titanium alloy still has good performance in high-temperature environments, so it is suitable for the field of high-temperature work.
5) High hardness: Titanium alloy bolts have high hardness and are not easy to deform, so they are suitable for occasions that require high precision.
6) Good wear resistance: titanium alloy has better wear resistance than steel, so it has a longer service life.
4. Application Fields
1) Aerospace industry: Titanium countersunk bolts are widely used in the aerospace industry, such as aircraft, satellites, and rockets, due to their high strength, lightweight, and corrosion resistance.
2) Automotive industry: Automakers are increasingly using titanium countersunk bolts when building cars. This is because titanium countersunk head screws are lighter, stronger, and more corrosion-resistant than bolts made of steel.
3) Medical devices: Titanium countersunk head bolts are also often used in medical devices, such as surgical screws for repairing fractures.
4) Shipbuilding: Shipbuilding is also one of the application fields of titanium countersunk bolts because titanium metal has corrosion resistance and lightweight, which makes it able to withstand corrosion and heavy loads in seawater environments.
In short, due to the advantages of high strength, lightweight and corrosion resistance, titanium countersunk bolts are widely used in many fields.
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