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Purple bronze brass tube and manufacturing method and production line thereof

A manufacturing method and technology of brass tubes, applied in the direction of metal material coating process, etc., can solve the problems that connecting pipes and pipe fittings cannot be produced, and achieve the effects of reducing equipment transformation expenses, reducing manufacturing costs, and eliminating pickling processes

Inactive Publication Date: 2015-04-01
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 with the specification of Φ9.52×0.65mm. After filling the inner wall with protective gas, it is uncoiled into the online induction annealing unit of model XR-GT400. 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, the tube blank is rapidly heated to between 650-800 °C after entering the coil, the outer surface of the tube is in contact with the air during heating, and the surface after the coil is bright red In the hot state, the outer surface of the brass tube is oxidized while heating, and then enters the ethanol-containing reducing cooling liquid to cool to room temperature; the oxide layer on the surface of the brass tube exiting the cooling liquid is reduced to copper. The annealed pipes are of good quality and the surface is copper-colored.

Embodiment 2

[0071]Select the H90 brass coil with the specification of Φ12.7×0.70mm, and uncoil it into the online induction annealing unit of model XR-GT200. The induction coil is filled with oxygen, the annealing speed is 150m / min, and the heating temperature of the pipe is 750-900℃ , the proportion of ethanol in the coolant is 2%; after the tube blank enters the coil, it quickly heats up to about 750-900 ° C, and the surface is in a red and bright red-hot state after exiting the coil, and turns black after an oxidation section of about 4 meters long Bright red hot state; then cooled to room temperature in ethanol-containing reducing coolant; the oxide layer on the surface of the brass tube out of the coolant was reduced to copper. The annealed pipes are of good quality and the surface is copper-colored.

Embodiment 3

[0073] Select the H65 brass coil tube with the specification of Φ6.35×0.65mm, and uncoil it into the online induction annealing unit of model XR-GT400. The induction coil is filled with oxygen-enriched air, the annealing speed is 200m / min, and the heating temperature of the tube is 550- 700°C, the proportion of ethanol in the cooling liquid is 5%; the tube blank heats up rapidly to about 550-700°C after entering the coil, and the surface is in a dark red red-hot state after exiting the coil. It is in a black and bright red-hot state; it is then cooled to room temperature in a reducing cooling liquid containing ethanol; the oxide layer on the surface of the brass tube that exits the cooling liquid is reduced to copper. The annealed pipes are of good quality and the surface is copper-colored.

[0074] The invention also provides a copper-colored brass pipe production line, such as figure 1 As shown, including a heating device 2 and a reduction tank 4, the reduction tank 4 is fi...

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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 manufacturing method of a copper-colored brass pipe, a copper-colored brass pipe production line and a copper-colored brass pipe. Background technique [0002] Copper-colored brass pipes are popular in the market. Because of their high strength, high elongation, copper color and luster, and strong oxidation resistance, they can be widely used in air-conditioning connecting pipes, air-conditioning evaporator and condenser pipe fittings, and copper water pipes. and other uses. There is a large demand in the market for extra-long copper-colored brass tubes packed in 100 kg / reel. [0003] The related art provides a method for processing a copper-colored brass tube, which is mainly to carry out vacuum surface dezincification of the hard brass tube in a temperature range of 100°C to 150°C lower than its melting point temperature, and then cool it to 100°C. Put it into...

Claims

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Application Information

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Patent Type & Authority Patents(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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