The processing flow of titanium rod from sponge titanium to rough is as follows:

(1) Compression electrode, the sponge titanium is pressed through a press to form a dense sponge titanium pressed block electrode

(2) Vacuum casting, under the conditions of 1700~1800℃ and -103pa, the above-mentioned sponge titanium pressed block electrode is vacuum casting three times;

(3) Open the billet. Under the condition of 1000 ℃, the billet is opened by the hydraulic press, and the Z is finally pressed into a square billet; when the billet is opened, it should be noted that the life of the titanium rod is reduced due to the high pressure, so when the closed die F9 Titanium Forging method is used. When forging titanium rods, closed die forging must strictly limit the volume of the original blank, which complicates the preparation process. Whether to use closed die forging or not, it must be considered in terms of interest and process feasibility. During open die forging, the loss of burrs accounts for 15%-20% of the weight of the blank. The technological waste of the clamping part (if necessary to keep this part according to the die Titanium Threaded Forged Fitting conditions) accounts for 10% of the weight of the blank. The relative loss of burr metal is usually The weight of the blank has been reduced and increased. Some forgings with asymmetric structures, large cross-sectional area differences, and difficult to fill local forgings. The burr consumption can be as high as 50%. Closed die forging has no burr loss, but the blanking process is complicated and needs to be added. More transitional grooves will undoubtedly increase auxiliary costs.

(4) For the first rolling, under the condition of 970~980℃, the roughness of cylindrical shape is initially rolled by a rolling mill

(5) The second rolling, under the condition of 950 ℃, use a rolling mill to make a blank. There are many rolling methods, which can be classified according to different characteristics. Extrusion is classified according to the characteristics of metal flow and deformation, including forward extrusion, reverse extrusion and special extrusion. Special extrusion includes hydrostatic extrusion, continuous extrusion, lateral extrusion, co-extrusion, compound extrusion, sheath extrusion, peeling extrusion, water-sealed extrusion, bitter 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 the two major branches of extrusion. Hot extrusion is mainly used in metallurgical industry systems, which is commonly known as extrusion; cold extrusion is used in mechanical industry systems; the development of warm extrusion is relatively late, and the scope of application is also small.