The production process of the traditional process of titanium rod
The production process of the traditional process oftitanium-rod.html> titanium rod The traditional process of titanium rods is to melt and cast sponge titanium into ingots, and then produce titanium rods by billeting and forging. Sponge titanium is the most primitive material for producing titanium, and it will be smelted to get titanium ingot, the initial material for titanium processing. The processing flow of titanium rod from sponge titanium to blank is as follows:
(1) piezo electrode, titanium sponge is carried out piezo electrode by pressing machine, forms compact titanium sponge pressed block electrode; (2) Vacuum melting and casting, under the conditions of 1700～1800 ℃ and-103pa, vacuum melting and casting are carried out three times to the above-mentioned sponge titanium pressed block electrode;
(3) billet opening, under the condition of 1000 ° C, the billet is opened by a hydraulic press, and finally pressed into a square billet; When opening the billet, it should be noted that the life of the titanium rod is reduced due to the high pressure. Therefore, when the closed die forging method is used to forge the titanium rod, the closed die forging must strictly limit the volume of the original blank, which complicates the material preparation process. Whether to use closed die forging should be considered from two aspects of interest and process feasibility. During open die forging, the burr loss accounts for 15%-20% of the blank weight. The technological waste of the clamping part (if this part must be left according to the die forging conditions) accounts for 10% of the blank weight. The relative loss of the burr metal is usually with the blank. For some forgings with asymmetric structure, large difference in cross-sectional area, and partial forgings that are difficult to fill, the burr consumption can be as high as 50%. Although there is no burr loss in closed die forging, the blank making process is complicated and more Multiple transition tool grooves will undoubtedly increase auxiliary costs.
(4) Rolling for the first time, under the condition of 970-980 ℃, use a rolling mill to initially roll into a cylindrical shape blank;
(5) For the second rolling, under the condition of 950°C, roll it into a blank with a rolling mill. There are many rolling methods, which can be classified according to different characteristics. Extrusion is classified according to metal flow and deformation characteristics, including forward extrusion, reverse extrusion and special extrusion. Special extrusion includes hydrostatic extrusion, continuous extrusion, lateral extrusion, joint extrusion, compound extrusion, jacket extrusion, peeling extrusion, water seal extrusion, die extrusion, powder extrusion, semi-extrusion Melt extrusion, liquid extrusion, etc. Extrusion is classified by temperature, including hot extrusion, warm extrusion and cold extrusion. Hot extrusion and cold extrusion are two branches of extrusion. Hot extrusion is mainly used in the metallurgical industry system, that is, commonly known as extrusion; cold extrusion is used in the mechanical industry system; warm extrusion is developed relatively late, and its application range is also small. . Sponge titanium→titanium electrode block→vacuum melting→titanium ingot→hydraulic press forging into billets→rolling→skinning→annealing→straightening→polishing→finished product→flaw detection→packaging Titanium rods are light in weight, high in strength, superior in mechanical properties, and excellent in corrosion resistance. It is widely used in: aerospace, ships, auto parts, bicycle parts, marine engineering seawater desalination, seawater farming, deep-sea oil drilling, seawater ocean pipelines: power industry thermal energy conversion stations, steam turbine titanium blades, chemical petroleum industry chlor-alkali, Soda ash, urea, and vacuum salt making Petrochemical, electrolysis, electroplating in metallurgical industry, textile, papermaking, fuel in light industry, equipment manufacturing in medical and medical industry Robot body replacement joints, medical surgical equipment, medical titanium skeleton for the body, construction Decoration in industry, manufacturing of sports equipment, computers, cameras, watches, glasses, mobile phones, tableware, outdoor titanium products, and handicrafts in daily life.
