Filling medium for extruding penetration piece and manufacturing technique of penetration piece

[0050] Example 1

[0051] 100g calcium nitrate Ca(NO 3 ) 2 ·4H 2 O, 1800g sodium nitrate NaNO 3 Mix evenly with 100g water;

[0052] Place the obtained mixture in a heating dish at 800°C for heating and melting, until the mixture is completely melted to a liquid flow state, use an automatic filling machine to fill the molten mixture into 50 low carbon with an outer diameter of Φ10mm and a length of 80mm In the steel pipe, after cooling, the low-carbon steel pipe filled with the filling medium is placed in a T-shaped die cavity with a cavity of Φ10mm for extrusion molding; then the extruded pipe components are placed in the above-mentioned after melting at a high temperature of 800℃ In the mixture, the filling medium in the through-pipe is melted by high temperature, and flows out from the through-pipe after 5 minutes to complete the removal of the filling medium in the through-pipe and obtain a T-shaped three-way pipe.

[0053] The structure of T-shaped three-way pipe fittings is as follows figure 1 As shown, the T-shaped three-way pipe fitting obtained in this embodiment has a double port length of 55 mm, a single port length of 20 mm, and an outer diameter of Φ10 mm.

[0054] Example 2:

[0055] 600g Ca(NO 3 ) 2 ·4H 2 O, 2370g sodium nitrate and 30g water are evenly mixed;

[0056] Place the obtained mixture in a heating dish and heat and melt it at 220°C until the mixture is completely melted to a liquid flow shape. Fill the molten mixture into 100 pieces of aluminum with an outer diameter of Φ8mm and a length of 100mm with an automatic filling machine. After cooling, the aluminum tube filled with the filling medium is placed in a Y-shaped three-way mold with a cavity of Φ8mm for extrusion molding; then the extruded tube parts are placed in the above-mentioned after melting at 380°C. In the mixture, the filling medium in the pipe pass is melted by high temperature, and flows out of the pipe pass after 5 minutes to complete the removal of the filling medium in the pipe pass. In the process of removing the filling medium, the high temperature affects the pipe pass. Tempering effect; the pipe through-pieces after removing the filling medium are bent on the empty pipe-bending machine to obtain a Y-shaped three-way pipe.

[0057] The structure of Y-shaped three-way pipe fittings is as follows figure 2 As shown, the outer diameter of the Y-shaped three-way pipe obtained in this embodiment is Φ8mm, the center distance is 25.4mm, and the total height is 32.5mm.

[0058] Example 3:

[0059] Add 2000g Ca(NO 3 ) 2 , 1600g sodium nitrate and 400g water are uniformly mixed;

[0060] Place the obtained mixture in a heating dish and heat and melt at 100°C until the mixture is completely melted to a liquid flow state. Fill the molten mixture into 150 pieces with an outer diameter of Φ9mm and a length of 90mm with an automatic filling machine. In the copper tube, after cooling, the copper tube filled with the filling medium is put into a mold with a Φ9mm cavity to be extruded; then the extruded tube parts are placed in the above mixture after being melted at a high temperature of 450°C. The filling medium in the pipe pass is melted by high temperature and flows out of the pipe pass after 5 minutes to complete the removal of the filling medium in the pipe pass. In the process of removing the filling medium, the high temperature has a tempering effect on the pipe pass ; The pipe through fittings after removing the filling medium are bent on the empty pipe bending machine to obtain a three-jaw three-way pipe fitting.

[0061] The structure of the three-claw tee fitting is as image 3 As shown, the three-jaw type three-way pipe obtained in this embodiment has an outer diameter of 9 mm, a center distance of 22 mm, and a height of 24 mm.