Titanium Bolts & Screws wildly used in different Industries,such as
Ti6Al4V Bolts & Screws in Submarine Engineering
C.P. Titanium Bolts & Screws in Oil & Gas Pipeline
CP.Titanium Bolts & Screws in High Pressure Vessel
In the manufacturing process of Titanium Bolts & Screws
mould, the smooth processing and mirror processing after shape processing is called the surface grinding and polishing processing of parts, which is an important process to improve the quality of the mould. Mastering reasonable polishing method can improve the quality and service life of titanium alloy screw mould, and thus improve the quality of products.
Common polishing methods and working principles.
1.Mechanical polishing
Mechanical polishing is to rely on cutting or plastic deformation of the material surface and remove the convex part of the workpiece surface to get a smooth surface polishing method, the general use of oilstone strip, wool wheel, sandpaper, etc., mainly by hand, the surface quality requirements of the method can be used to superfine polishing. Super precision grinding and polishing is the use of special grinding tools, in the grinding and polishing fluid containing abrasive, the workpiece is pressed on the surface of the processing, for high-speed rotation movement. The surface roughness can be up to Ra0.008 microns with this technology, which is the best among various polishing methods. This method is often used in optical lens molds. Mechanical polishing is the main method of die polishing.
2. Chemical polishing
Chemical polishing is a process in which the concave part of the micro convex part of the surface is dissolved in a chemical medium to obtain a smooth surface. This method can polish the workpiece with complex shape and many workpieces at the same time with high efficiency. The surface roughness obtained from chemical polishing is generally Ra10 μm.
3. Electrolytic polishing
The basic principle of electropolishing is the same as that of chemical polishing, that is, by selectively dissolving the tiny protrusions on the surface of the material to make the surface smooth. Compared with chemical polishing, it can eliminate the effect of cathode reaction and has better effect.
4. Ultrasonic polishing
Ultrasonic polishing is a kind of machining method that utilizes tool section to make ultrasonic vibration and polish brittle and hard materials by abrasive suspension. The workpiece is put into the suspension of the abrasive and placed in the ultrasonic field together. By the oscillation of ultrasonic wave, the abrasive is grinded and polished on the workpiece surface. Ultrasonic machining macroscopic force is small, will not cause workpiece deformation, but tooling production and installation is more difficult.
5. Fluid polishing
Fluid polishing relies on the fluid and the abrasive particles carried by it to wash the workpiece surface to achieve the purpose of polishing. Hydrodynamic grinding is driven by hydraulic pressure, the medium is mainly used in the lower pressure under the flow of a good special compound (polymer material) and mixed with abrasive made, abrasive can be used silicon carbide powder.
6. Magnetic grinding and polishing
Magnetic grinding and polishing is the use of magnetic abrasive in the magnetic field under the action of the formation of abrasive brush, grinding workpiece processing. This method has high processing efficiency, good quality and easy to control processing conditions. With a suitable abrasive, the surface roughness of the machine can reach Ra 0.1 μm.
7. Edm ultrasonic composite polishing
In order to improve the polishing speed of the workpiece with the surface roughness Ra of 1.6 μm or more, the ultrasonic wave is combined with the special high-frequency narrow pulse high peak current pulse power supply for composite polishing, and the ultrasonic vibration and the electric pulse corrosion simultaneously act on the surface of the workpiece, and rapidly reduce The surface roughness, which is effective for polishing the rough surface of the mold after machining by car, milling, electric spark and wire cutting, is very effective.
Polihsing methold is one important way to keep the Quality of Titanium Bolts & Screws,we will use the specific way on customer appplication.
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