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 field of pipeline engineering and refrigeration pipe fittings, and can solve the problem of broken pipe wall, which requires lead removal, lead filling again, and lead removal again. The process steps of lead filling are complicated and the process flow is complicated and other issues, to achieve the effects of large-scale application, ease of industrial scale production, and reduction of production costs

Active Publication Date: 2013-12-11
赵肖运
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, lead is a heavy metal that is very harmful to the human body and the environment; and the lead filling process steps are relatively complicated, including material cutting, deburring, blowing metal shavings, the first lead filling, the first cleaning of the nozzle, Drilling center hole, hole extrusion, sawing off blind end, grinding, first lead stripping, annealing, second lead filling, second nozzle cleaning, pressing, cutting, second lead stripping, lead removal

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[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...

Example Embodiment

[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 be...

Example Embodiment

[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...

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Abstract

The invention provides a filling medium for extruding a penetration piece and a manufacturing technique of the penetration piece. The filling medium provided by the invention comprises 5-70 wt% of calcium nitrate, 25-90 wt% of sodium nitrate and 1-10 wt% of water. The filling medium provided by the invention is nontoxic and harmless to the human body and environment. The manufacturing technique of the penetration piece comprises the following steps: heating the filling medium, filling the molten medium into an original tube blank, cooling, extruding the original tube blank, and melting to remove the filling medium to obtain the penetration piece. The filling medium provided by the invention is healthy and environment-friendly, can easily implement industrial large-scale production, and can effectively lower the production cost.

Description

technical field [0001] The invention relates to the technical fields of pipe engineering and refrigeration pipe fittings, in particular to a filling medium for extruding pipe fittings and a manufacturing process for the pipe fittings. Background technique [0002] Pipe fittings are important pipe fittings in pipeline engineering, because they are widely used in the field of pipeline engineering, especially in refrigeration, chemical, construction and food industries. Pipe fittings can be produced through casting, forging, welding and extrusion processes. Cast pipe fittings generally need to be reprocessed and their mechanical properties are poor, so they are gradually eliminated; forged pipe fittings have large machining allowances and high costs. Restricted; although there are many applications of welded pipe fittings, the high-stress area is located at the position of the weld, which is likely to leave hidden dangers of accidents. The above-mentioned cast pipe fittings, f...

Claims

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Application Information

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IPC IPC(8): B21C37/28B21C37/29
Inventor 赵肖运王超峰王彦坤潘永刚
Owner 赵肖运
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