What is the hardness of titanium alloy screws? What material is titanium alloy?

In the manufacturing process of titanium alloy screw mold, the smoothing and mirror processing after shape processing is called part surface grinding and polishing, which is an important process to improve the quality of the mold.

Commonly used polishing methods and working principles

In life, people often ask, what is the hardness of titanium alloy screws and what is titanium alloy? In fact, titanium alloy is a rare metal with relatively low density, high hardness and strength. In addition, its process performance is poor, cutting is difficult, in hot processing, it is easy to absorb impurities such as hydrogen, oxygen, nitrogen and carbon, and the production process is complicated.

Titanium alloy screws

In recent years, my country's titanium industry has developed rapidly and has become a major titanium producer. According to incomplete statistics, there are more than 300 titanium alloy production enterprises in my country, and the overall output of titanium alloy products in my country shows an increasing trend year by year. Titanium alloy materials are also widely used in mechanical equipment, electronic equipment, communication equipment, hardware lighting, building bridges and other industries, and gradually entered the civilian field.

Since 1948, in line with the development needs of the aviation industry, the industrial production of titanium has developed at an average annual growth rate of about 8%. Titanium alloys suitable for field applications often have excellent properties but are expensive. At present, the annual output of titanium alloy processing materials has reached more than ten thousand tons, and there are dozens of titanium alloy grades.

Commodities usually made of titanium alloy materials are almost all to take advantage of the "low density and high strength" characteristics of titanium alloys, and are usually used in places where strength requirements and weight requirements are combined. But titanium alloy is not a high-strength material. It is "specific strength" very high. The so-called "specific strength" is the "ratio of strength and density". The density of titanium alloy is about 50%-60% of 45 steel, but the strength is comparable to 45 steel (titanium alloy is slightly higher).

Titanium alloys have high strength and good heat resistance and low temperature resistance. Some titanium alloys can work for a long time between 450℃-550℃ and minus 250℃. Titanium has good corrosion resistance to salt, seawater and nitric acid, and Ti-30M alloy is even more resistant to corrosion of high concentrations of hydrochloric acid and sulfuric acid. These advantages of titanium alloys make titanium well-deserved to be called "space" metal and "ocean" metal.

What is the hardness of titanium alloy screws?

The hardness of titanium alloy itself is very low, only about a quarter of that of 45 steel, but the strength of titanium alloy is very good, so the elastic modulus of the whole material is very small, and a small elastic modulus means high elasticity.

In addition to the hardness of titanium alloy being higher than that of stainless steel, the finished product is also much lighter in weight than ordinary stainless steel screws. In addition, the threads of titanium alloy screws and nuts are hard, and the wear resistance performance may be higher than that of ordinary stainless steel. In addition to the fact that it is not easy to slip teeth, the material stability of titanium alloy itself is also very high, and it has good oxidation resistance.

The hardness of some titanium alloys varies greatly, so titanium alloy screws must use good materials, and good titanium alloys have the same hardness as steel.

There are really many places where screws are used in life, but the understanding of titanium alloy screws is the last word, otherwise it will be counterproductive to choose inferior products. Therefore, when purchasing, you should find a business with large titanium alloy screws to choose the goods. For components that are subject to high strength, such as screws, we recommend not to use aluminum materials, which are easy to strip, and use titanium alloy screws steadfastly.

In order to improve the polishing speed of workpieces with surface roughness Ra above 1.6 μm, ultrasonic and special high-frequency narrow pulse high-peak current pulse power supply are used for composite polishing. Its surface roughness has obvious and effective polishing effect on the rough surface of the mold processed by turning, milling, EDM and wire cutting.