Wire can also be called wire rod. When using wire, the surface of the wire will be linearly cracked, and there will be straight or curved thin lines along the rolling direction. This is the so-called wire crack, which is a longitudinal crack. The wire also has transverse cracks, which are discontinuous. The reasons for […]
When it comes to nickel-titanium alloys, a new term has to be introduced—shape memory alloys. Shape memory alloy refers to: a special alloy that can automatically restore its plastic deformation to its original shape at a certain temperature. Nitinol is this type of alloy. Nickel-titanium alloy has an expansion rate of more than 20%, a […]
Metal extrusion has many important characteristics such as good variety diversity and large production flexibility. It is the industrial production of metal pipe, rod, wire and profile and various new materials and new products such as composite materials, powder materials, and high-performance difficult-to-process materials. Important method. With the rapid development of economic construction and high-tech, […]
1. Nitriding: The use of chemical heat treatment techniques such as plasma nitriding, multi-arc ion plating, ion implantation and laser nitriding to form a golden yellow TiN coating on the surface of titanium dentures, thereby improving the wear resistance, corrosion resistance and resistance of titanium Fatigue. However, the technology is complicated and the equipment is […]
Strong Plastic Deformation (SPD) refines crystal grains to the nanometer level by causing the material to undergo strong plastic deformation. Such as: equal channel corner extrusion, high-pressure torsion, stacking and rolling composite technology, etc. The preparation of submicron and nanomaterials by strong plastic deformation has aroused wide interest from material research scholars, and the microstructure […]
1. Mechanical grinding: Titanium has high chemical reactivity, low thermal conductivity, high viscosity, low mechanical grinding and grinding ratio, and is easy to react with abrasives. Ordinary abrasives are not suitable for titanium grinding and polishing. Hard abrasives, such as diamond, cubic boron nitride, etc., the polishing linear speed is generally 900 ~ 1800m/min., otherwise, […]
The main reason is that the wettability of the Al-Zn-Si melt and the steel plate is much worse than that of the pure Zn melt. At the same time, the temperature of the plating bath and the aluminum content have been greatly increased, which has caused a fundamental change in the production process of GL […]
Some TC4 titanium alloys have a tendency to fracture when subjected to high temperature and sodium chloride under stress. Fracture occurs in the best (in terms of composition and mechanical properties) application temperature range (>250°C) of various alloys. This phenomenon was first discovered by Bauer, called salt corrosion of TC4 titanium alloy. The fracture properties […]
Cold-rolled steel plates are widely used in daily production and life. Hole defects are one of the most harmful defects in cold-rolled thin plates. Since the defective parts must be removed before they can be used, the yield rate of cold-rolled steel plates is greatly reduced, and cold-rolled The production efficiency of the downstream users […]
In the process of refining metallurgy, the temperature control of titanium products is very important. There are many matters that need to be paid attention to, otherwise the refined titanium products will be unqualified, so what should we pay attention to? Excellent temperature control is the basis to ensure the smooth completion of the metallurgical […]