Filling medium for extruding penetration piece and manufacturing technique of penetration piece
A technology of filling medium and manufacturing process, which is applied in the direction of metal extrusion forming tools, manufacturing tools, metal extrusion, etc., can solve the problem of crushing the pipe wall, so it is necessary to remove lead, refill lead, and re-remove lead and refill Solve problems such as complicated lead process steps and complicated process flow, and achieve the effect of facilitating large-scale application, easy industrial scale production, and reducing production costs
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Embodiment 1
[0050] Mix 500g of sodium nitrate and 1500g of potassium nitrate evenly;
[0051] Put the obtained mixture in a heating vessel and heat and melt it at 800°C until the mixture is completely melted to a liquid state, and then use an automatic filling machine to fill the molten mixture into 50 low-carbon tubes with an outer diameter of Φ10mm and a length of 80mm. In the steel pipe, after cooling, place the low-carbon steel pipe filled with the filling medium in a T-shaped die cavity with a cavity of Φ10mm for extrusion molding; then place the extruded pipe fittings in the above-mentioned In the mixture, the filling medium in the pipe fitting is melted by high temperature, and flows out of the pipe fitting after 5 minutes, completing the removal of the filling medium in the pipe fitting, and obtaining a T-shaped tee pipe fitting.
[0052] The structure of T-shaped three-way pipe fittings is as follows: figure 1 As shown, the outer diameter of the T-shaped tee fitting obtained in ...
Embodiment 2
[0054] Mix 750g sodium nitrite and 2250g potassium nitrate evenly;
[0055] Put the obtained mixture in a heating vessel, heat and melt at 220°C until the mixture is completely melted to a liquid state, and use an automatic filling machine to fill the molten mixture into 10 pieces of aluminum alloy with an outer diameter of Φ8mm and a length of 100mm. After cooling, place the aluminum tube filled with filling medium in a Y-shaped tee mold with a cavity of Φ8mm for extrusion molding; then place the extruded pipe fittings in the above-mentioned In the mixture, the filling medium in the pipe-through part is melted by high temperature, and flows out from the pipe-through part after 5 minutes to complete the removal of the filling medium in the pipe-through part. In the process of removing the filling medium, the high temperature plays a role in the pipe-through part Tempering effect: Bending the empty pipe fittings after removing the filling medium on the empty pipe bending machin...
Embodiment 3
[0058] Mix 1000g sodium nitrate, 1000g sodium nitrite and 2000g potassium nitrate evenly;
[0059] Put the obtained mixture in a heating vessel, heat and melt at 500°C until the mixture is completely melted to a liquid state, and use an automatic filling machine to fill the molten mixture into 150 tubes with an outer diameter of Φ9mm and a length of 120mm In the copper tube, after cooling, put the copper tube filled with the filling medium into a mold with a cavity of Φ9mm for extrusion molding; then place the extruded pipe fittings in the above mixture after high temperature melting at 500°C, The filling medium in the pipe-through is melted by high temperature, and flows out of the pipe-through after 5 minutes to complete the removal of the filling medium in the pipe-through. In the process of removing the filling medium, the high temperature has a tempering effect on the pipe-through ; Bending the empty pipe fittings after removing the filling medium on the empty pipe bendin...
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