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Brass strip for button and manufacturing method thereof

A technology of brass strips and buttons, applied in the field of copper processing, can solve the problems of rough surface, uneven performance, low tensile strength of brass strips, etc., and achieve the effects of high environmental protection, good organizational properties and mechanical properties

Active Publication Date: 2015-10-21
CNMC ALBETTER ALBRONZE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, bell-type annealing furnaces commonly used for copper processing and annealing equipment have defects such as inconsistent temperature and uneven performance. The outside of the brass strip is prone to low tensile strength and rough surface, and brass strips will appear at higher annealing temperatures. Defects such as bonding, coarse grains, etc., even some brass strips have a smooth surface under normal light, but hemp occurs during the stretching overshoot, and the uneven grain size is detected by a metallographic microscope, causing customers Unusable, resulting in waste of production costs, there is currently no technology that can completely solve this problem

Method used

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preparation example Construction

[0040] The present invention also provides a preparation method of a brass strip for buttons, comprising the following steps:

[0041] 1) Melting and casting: new materials and production recycled materials are put into the smelting furnace in a certain proportion for melting, and then poured to obtain ingots. The ingots include the following components in weight percentages: 63.9% to 64.2% of Cu, 0 to 0.015% Fe, 0-0.0003% Pb, 32%-37% Zn, 0-0.005% Ni, 0-0.1% impurity elements;

[0042] 2) Hot rolling: the ingot obtained in step 1) is subjected to hot rolling treatment, and the ingot is heated in a walking furnace before hot rolling. The length is 6min / piece, the heating time is 3.5h~4h, the temperature of the ingot is ensured to be uniform before being released from the furnace, the hot rolling adopts 11 passes of rolling, and the final rolling temperature is controlled at 500°C~550°C to obtain an ingot, the ingot The thickness is 15mm~17mm, and the width is 658mm~662mm;

[...

Embodiment 1

[0091] Taking the H65 grade, specification: 0.21×305M as an example, the production and processing technology of the brass strip for buttons is described in detail below:

[0092] 1) Melting and casting: Put the new material and the return material of our factory into the electric arc furnace to melt, wherein the ratio of the new material and the return material of our factory is 50%, and then pour it into a high-temperature resistant mold; the Cu content is obtained. 64.01%, Zn content is 35.93%, P≤0.001%, Fe content is 0.0125%, Pb content is 0.0001%, Ni content is 0.004%, the sum of impurities is <0.1%, and the ingot size is 630×220mm, the above contents are all is a percentage by weight.

[0093] 2) Hot rolling: Hot rolling is performed on the ingots obtained by melting and casting. Before hot rolling, the brass ingots are heated in a walking furnace. The casting ingot temperature is 820°C, the discharge step length is 6min / piece, and the heating time is 4h. The hot rollin...

Embodiment 2

[0128] Taking the H65 grade, specification: 0.23×305M as an example, the production and processing technology of the brass strip for buttons is described in detail below:

[0129] 1) Melting and casting: Put the new material and the return material of our factory into the electric arc furnace to melt, wherein the ratio of the new material and the return material of our factory is 50%, and then pour it into a high-temperature resistant mold; the Cu content is obtained. 64.12%, Zn content is 35.83%, P≤0.001%, Fe content is 0.0057%, Pb content is 0.00015%, Ni content is 0.0035%, the sum of impurities is <0.1%, and the ingot size is 630×220mm, the above contents are all is a percentage by weight.

[0130] 2) Hot rolling: Hot rolling is performed on the ingots obtained by melting and casting. Before hot rolling, the brass ingots are heated in a walking furnace. The temperature of the ingot out of the furnace is 830°C, and the step length of the ingot is 6min / piece. The hot rolling...

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Abstract

The invention discloses a brass strip for a button and a manufacturing method thereof. According to the manufacturing method, the content of Fe and Pb elements in a raw material is strictly controlled, the technology and equipment for annealing treatment are selected according to the thickness of the brass strip, forced fast cooling is conducted on the upper surface and the lower surface of an ingot blank generated after hot rolling is conducted; furthermore, after the upper surface and the lower surface of the ingot blank are quickly cooled, and secondary hot rolling processing is conducted on the ingot blank, so that the produced brass strip has higher environmental protection performance, and no adverse reaction is caused to a human body; little ferromagnetic substance is contained, the button is basically free of magnetism and cannot be detected by a needle detector; meanwhile the content of other elements and the matching among them are adjusted, under the situation that the contents of Pb and the Fe in the brass strip are decreased, the brass strip obtains better structural property and mechanical property, the problems existing in the brass strip for the button are solved, and the brass strip with the structural property and mechanical property more suitable for manufacturing the button is further provided.

Description

technical field [0001] The invention relates to the technical field of copper material processing, in particular to a brass strip for buttons and a preparation method thereof. Background technique [0002] Brass has good mechanical properties and corrosion resistance, relatively high electrothermal performance, small specific gravity, good color, easy smelting and processing, and is widely used in brass strip alloys. Because of its good formability, high-quality buttons can be produced with brass strips, and the market prospect is very broad. [0003] At present, the medium and high-end clothing buttons in the market are required to be able to pass the inspection of the needle detector. Since brass products are metal alloy products, they usually contain ferromagnetic substances. If the needle is broken, the inspection cannot be passed smoothly. Therefore, the content of Fe element in the chemical composition of the copper alloy should be controlled. With the continuous imp...

Claims

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Application Information

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IPC IPC(8): C22C9/04C22C1/02C22F1/08B21C37/04
Inventor 王晓腾张建华郭丽丽张西军周晶刘晨亮许丙军赵强马惠玲
Owner CNMC ALBETTER ALBRONZE
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