Extrusion processing process for special-shaped T-pipe

A special-shaped three-way pipe and extrusion processing technology, applied in the field of pipe fittings manufacturing, can solve the problems of high manufacturing cost and cannot be reused, and achieve the effect of improving work efficiency and simplifying process steps

Inactive Publication Date: 2015-09-30
左铁军 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After extrusion molding, the pipe fittings are put into water to dissolve the dry powder, and the filler becomes a consumable and cannot be reused, making the manufacturing cost still high

Method used

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  • Extrusion processing process for special-shaped T-pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Extruded special-shaped three-way copper pipe, such as figure 1 As shown, the steps are as follows:

[0022] (1) Cutting-to-length tube blanks: cut the copper tubes to a fixed length to make tube blanks of a certain length;

[0023] (2) Deburring: remove the burrs on the tube blank;

[0024] (3) Liquified filler: use industrial salt with a melting point of 300°C to 400°C as filler, and heat it to a molten state;

[0025] (4) Filler filling: fill the prepared molten filler into the tube blank;

[0026] (5) Cooling and solidification: air-cool the tube embryo to room temperature;

[0027] (6) T-tube forming: put the tube embryo into the mold of the press, extrude it into a T-shaped pipe fitting, then saw the blind end of the T-shaped pipe fitting into a flat nozzle, and extrude the edge formed on the pipe wall the line is polished off;

[0028] (7) Annealing: Heat the T-shaped pipe fitting to the annealing temperature of the material, and pour out the heated and melt...

Embodiment 2

[0032] The process steps for manufacturing special-shaped three-way aluminum pipes are the same as those in Example 1, except that the aluminum pipes are cut to length, and the fillers are industrial salt mixtures with a melting point of 280°C to 450°C. The industrial salt mixture is 50% industrial salt and 50% talcum powder, and the filler is melted and stirred as one when liquefied.

Embodiment 3

[0034] The process steps for manufacturing the special-shaped three-way copper pipe are the same as the steps of the first embodiment, the difference is that the filler is an industrial salt mixture with a melting point of 280° C. to 450° C. The industrial salt mixture is 60% industrial salt and 40% talcum powder, and the filler is melted and stirred as one when liquefied.

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Abstract

An extrusion processing process for a special-shaped T-pipe comprises the following steps: pipe blank sizing, deburring, filler liquefying, filler packing, cooling for solidification, T-pipe forming, annealing, filler recovering, and profiling. The special-shaped T-pipe uses a liquid-state molten inorganic nonmetal material as fillers, the liquid-state fillers flow into a pipe blank fully and the pipe blank is filled up with the liquid-state fillers, the amount of the fillers in the pipe blank is guaranteed to be sufficient, and enough fillers are guaranteed to be used for supporting and sizing in extrusion forming. After cooling for solidification, the fillers become liquid state fillers to be fixed in the pipe blank, the pipe blank needs not to be sealed, the process step is simplified, and the working efficiency is improved.

Description

technical field [0001] The invention relates to a pipe fitting manufacturing technology, in particular to an extrusion processing technology of a special-shaped three-way pipe. Background technique [0002] In order to ensure good sealing performance and compression resistance of pipe fittings, current tee pipe fittings are generally processed by extrusion molding. The traditional extrusion molding method is lead-filled extrusion, and the process is: blanking→straight-through pipe filled with medium lead metal→cold extrusion→annealing→mechanical forming→removal of filler lead metal→pickling→drying→packaging. In this extrusion process, when the lead metal is filled and the lead metal is removed, it is processed manually by the machine. The production staff will have a lot of contact with the lead metal, and in order to avoid the lead being squeezed due to the density If the pipe wall is enlarged and crushed, lead filling and annealing need to be carried out twice, which is i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/15
CPCB21C37/151
Inventor 左铁军杨训赵越孙德兴赵超
Owner 左铁军
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