The Stamping and forming process of titanium tee is the use of seamless billets for a one-time overall molding, mainly extrusion molding, the mechanical properties of the resulting parts are better than the welded tee parts. The Stamping and forming process to make tee mainly involves: packing extrusion forming, hydraulic expansion, and hot press forming three methods, the specific methods of the process are as follows:
First, packing extrusion molding:
Packing extrusion molding process, using the internal filling filler straight billet extrusion molding. The billet into the mold cavity after the mold, and then with the same size as the diameter of the convex mold from both sides at the same rate of extrusion, billet pressure at both ends of the role of the filler with the radial holes from the mold opened on the extrusion forming tee. To prevent the branch pipe in the filler under the action of pressure expansion, in the mold of the radial hole a balance of the convex die, the extrusion of the branch pipe to apply enough balance pressure to support the branch pipe of the violent expansion of the shape.
Packing extrusion molding process extrusion of titanium tee fittings in all directions of the same wall thickness, pier coarse deformation is very small, extrusion part of the height of the pipe diameter of 2 ~ -3 times. Fillers and metal tubes in the mold cavity synchronous movement, no mechanical damage to the inner wall of the pipe. One of the key technologies of this process is the expansion medium filler) selection, expansion mediums are mainly paraffin, butter, clay, nylon, silicone rubber, and polyurethane rubber. For the high requirements of the inner wall of the tee can choose nylon, polyurethane rubber, silicone rubber, and other media; for the inner wall requirements are not too high or no requirements of the workpiece can be used as a medium of paraffin wax, recyclable, and low cost.
Second, hydraulic expansion:
Tee hydraulic expansion is a molding process through the metal material axial compensation expansion out of the branch pipe. Its working principle is the use of hydraulic presses, and titanium tee diameter of the same billet into the cavity inside, pressed tightly closed mold, injected into the billet liquid, through the hydraulic press two horizontal side cylinders synchronized relative to the movement of the billet extrusion billet, billet by the extrusion of the volume of the billet becomes smaller, billet within the liquid with the billet volume becomes smaller and higher pressure, billet high-pressure liquid with the left and right axes of the extrusion pressure of the double role of the flow of the inner lumen along the mold and expansion of the desired shape and shape of the branch pipe. The desired shape and size of the branch pipe. To prevent the rupture of the branch pipe, it is necessary to add a balanced convex mold balance to support the intense deformation of the branch pipe.
Hydraulic expansion of titanium tee applicable molding materials as cold work hardening tendency is relatively low carbon steel, alloy steel, and stainless steel, including some non-ferrous metal materials, such as copper, aluminum, titanium, and so on.
Third, hot press molding:
Hot pressing is pressed after heating to become a tee, material molding required equipment tonnage is low. Its process is greater than the diameter of titanium tee billet flattened to the size of the tee diameter, and in the branch pipe where the hole, heating billet. In the process of radial compression, the metal will flow in the direction of the stub, and the stub is formed under the stretching of the mold. The whole process of thermoforming is through the billet radial compression and branch pipe drawing process, forming tee and hydraulic expansion the difference is that the tee branch pipe metal by the billet radial movement is compensated for, so also known as the radial compensation process.
Hot pressing titanium tee for mild steel, alloy steel, and stainless steel materials, in particular, large diameter and pipe wall thicker tee, often using hot pressing forming process to manufacture.
