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显示标签为“titanium hexagon bars”的博文。显示所有博文

2020年11月15日星期日

What industry uses titanium plates, titanium rods and other raw materials?

Titanium is pure metal. Because of the "pureness" of titanium metal, when a substance comes in contact with it, there will be no chemical reaction. In other words, because of the high corrosion resistance and stability of titanium, it will not affect its essence after long-term contact with people, so it will not cause human allergies. It is the only one that has no effect on human autonomic nerves and taste. Metals are called "biophilic metals".
The biggest disadvantage of titanium is that it is difficult to extract. This is mainly because titanium can combine with oxygen, carbon, nitrogen and many other elements at high temperatures. Therefore, people once regarded titanium as a "rare metal". In fact, the content of titanium accounts for about 6‰ of the weight of the earth's crust, which is more than 10 times more than the sum of copper, tin, manganese and zinc.
Material characteristics: very high strength, excellent corrosion resistance in weight ratio, difficult to cold work, good weldability, about 40% lighter than steel, 60% heavier than aluminum, low conductivity, low thermal expansion, high melting point.
Typical applications: golf clubs, tennis rackets, portable computers, cameras, suitcases, surgical implants, aircraft skeletons, chemical appliances and marine equipment, etc. In addition, titanium is also used as a white pigment for paper, painting, and plastic.

2020年9月20日星期日

What technical requirements do titanium rods need to meet?

Fixed fishing nets used in marine aquaculture, after contact with organic matter and bacteria, diatoms will multiply, while shellfish, barnacles and other marine organisms that feed on diatoms will gather and adhere, which will not only increase the flow resistance and cause the fishing net Decontamination of the fish, and will cause anoxic infections, causing problems such as stunted fish development. For this reason, antiseptics, fungicides, etc. are generally used, but in this case, the service life of the fixed net does not exceed 20 years, and in order to remove the attached microorganisms, the net must be regularly pulled ashore for the mechanical removal, resulting in increased labor costs and Problems such as deterioration of fishing nets. Researchers from the University of Tokyo have studied the weaving of titanium wires into existing polyethylene (PE) fishing nets and electrifying them to electrolyze the seawater near the titanium wires to produce chlorine and ClO-, which can kill bacteria and inhibit bacterial growth. First, a mesh made of platinum-plated titanium wire with a diameter of 1 mm was used as the anode, and a stainless steel 312L plate was used as the cathode to conduct an electrolysis test. The results showed that the applied voltage was 3.0 V. After being placed in seawater for 14 days, the weight of the titanium mesh did not change, while the unpowered titanium mesh attached marine organisms.
The research on braiding is mainly to study the matching of the strength and elongation of titanium wire and PE wire. The existing fishing net is woven by twisting 10 PE monofilaments with a diameter of 0.10 mm into composite yarns and then twisting 2 composite yarns into twisted yarns. The researched titanium mesh is made by twisting 10 PE monofilaments and 1 titanium wire into twisted filaments, and then twisting the two twisted filaments into twisted filaments for weaving. Tensile tests of monofilament, twisted and twisted filaments of different diameter titanium wires (Φ0.10 mm, Φ0.25 mm, and Φ0.50 mm) and PE wires were carried out. The results show that the elongation of titanium wire is lower than that of PE wire, especially the titanium wire of Φ0.10 mm. The titanium wire (Φ0.25 mm, Φ0.50 mm) in the titanium composite wire broke simultaneously with the surrounding PE, and the titanium wire (Φ0.25 mm) in the titanium twisted wire broke simultaneously with the surrounding PE. It shows that the fishing net twisted into the titanium wire has the same strength as the existing fishing net woven with polyethylene wire.

The production of titanium rods requires a heat treatment process

The production of titanium rods usually requires a heat treatment process to improve the material properties of the titanium alloy, remove i...