Purple bronze brass tube and manufacturing method and production line thereof

A manufacturing method and technology for brass pipes, which are applied in metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of connecting pipes and pipe fittings that cannot be produced, and reduce equipment renovation expenses and manufacturing costs. Reduce and eliminate the effect of pickling process

Inactive Publication Date: 2013-08-14
JIANGSU XINGRONG HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the above-mentioned related technologies, there are many processes for making copper-colored brass tubes, which involve multiple processes such as heating, stretching, pickling, annealing, etc. Among them, a large number of pickling processes for copper tubes have put forward great requirements for environmental protection In addition, the above-mentioned related technologies can only be produced in straight strips, and cannot be produced for super-long pipes, especially connecting pipes and pipe fittings delivered by coils

Method used

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  • Purple bronze brass tube and manufacturing method and production line thereof
  • Purple bronze brass tube and manufacturing method and production line thereof
  • Purple bronze brass tube and manufacturing method and production line thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Select the H80 brass coil pipe with the specification of Φ9.52×0.65mm, fill the inner wall with protective gas, and enter the online induction annealing unit model XR-GT400 after the inner wall is filled with protective gas. The set speed is 100m / min, and the heating temperature of the pipe is 650-800℃ , the proportion of ethanol in the cooling liquid is 3%; the cooling liquid is supplied by the circulation system, and the tube blank enters the coil and quickly heats up to 650-800 ° C. When heating, the outer surface of the tube is in contact with the air, and the surface is red and bright red In the hot state, the outer surface of the brass tube is oxidized while being heated, and then enters the reducing cooling liquid containing ethanol to cool to room temperature; the oxide layer on the surface of the brass tube that exits the cooling liquid is reduced to copper. The annealed pipe is of good quality and the surface is copper-colored.

Embodiment 2

[0071]Select the H90 brass coil with a specification of Φ12.7×0.70mm, and uncoil it into the online induction annealing unit model XR-GT200. Oxygen is introduced into the induction coil, the annealing speed is 150m / min, and the heating temperature of the pipe is 750-900°C , the proportion of ethanol in the cooling liquid is 2%; after entering the coil, the temperature of the tube blank rises rapidly to about 750-900 °C, and the surface is red and bright after exiting the coil, and turns black after passing through the oxidation section as long as about 4 meters Bright red hot state; then enter the reduction cooling liquid containing ethanol and cool to room temperature; the oxide layer on the surface of the brass tube that exits the cooling liquid is reduced to copper. The annealed pipe is of good quality and the surface is copper-colored.

Embodiment 3

[0073] Select the H65 brass coil with the specification of Φ6.35×0.65mm, and uncoil it into the online induction annealing unit of model XR-GT400. 700°C, the proportion of ethanol in the cooling liquid is 5%; after the tube blank enters the coil, the temperature rises rapidly to about 550-700°C, and the surface of the coil is in a dark red hot state after passing through the oxidation section of about 5 meters. It is a black and bright red hot state; then it enters the reduction cooling liquid containing ethanol and cools to room temperature; the oxide layer on the surface of the brass tube that exits the cooling liquid is reduced to copper. The annealed pipe is of good quality and the surface is copper-colored.

[0074] The present invention also provides a production line of copper-colored brass tubes, such as figure 1 As shown, it includes a heating device 2 and a reduction tank 4, and the reduction tank 4 is filled with reducing cooling liquid; the brass tube 1 passes thr...

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Abstract

The invention provides a purple bronze brass tube and a manufacturing method and production line of the purple bronze brass tube. The manufacturing method of the purple bronze brass tube comprises the following steps: allowing the brass tube to penetrate through the heating device on line at a set speed and heating to a red hot state, and oxidizing the outer surface; and reducing and cooling the outer surface of the brass tube on line, and manufacturing the purple bronze brass tube. The purple bronze brass tube production line comprises a heating device and a reduction tank, wherein reducing and cooling liquid is filled in the reduction tank. Compared with the prior art, the manufacturing method of the purple bronze brass tube has the advantages that process steps are less, yield is high, production efficiency of the purple bronze brass tube is high, lots of brass tube pickling process are eliminated in the related technology, the outer protective gas of the brass tube is canceled, the manufacturing cost is obviously reduced, the brass tube is energy-saving and environment-friendly, the manufactured purple bronze brass tube is dense and uniform in outer surface and can serve as a finished tube, drawing, bending, tube expanding and other subsequent treatment can be performed, and the color layer does not drop.

Description

technical field [0001] The invention relates to the technical field of metal pipe processing, in particular to a method for manufacturing a copper-colored brass tube, a production line for a copper-colored brass tube and a copper-colored brass tube. Background technique [0002] Copper-colored brass tubes are popular in the market. Because of their high strength, high elongation, color and luster of copper, and strong oxidation resistance, they can be widely used in air-conditioning connecting pipes, pipe fittings for air-conditioning evaporators and condensers, and copper water pipes. and other purposes. What is in great demand in the market is extra-long copper-colored brass tubes packed in 100 kg / reel. [0003] The related technology provides a processing method of copper-colored brass tube, which is mainly to carry out vacuum surface dezincification of the hard brass tube at a temperature range of 100°C to 150°C lower than its melting point, and then cool it to 100°C P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/10C23C22/68
Inventor 祁威田福生陆正良
Owner JIANGSU XINGRONG HI TECH
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