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Preparation method of arsenic-added brass for forming corrosion-resistant and easy-bending pipes

A corrosion-resistant and pipe-bending technology, which is applied in the field of alloy manufacturing, can solve the problems of easy cutting and loss, achieve the effect of low lead content and improve corrosion resistance

Active Publication Date: 2019-08-27
JIANGXI AUDY BRASSWORK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the lead in this kind of material is easy to dissolve in water. If it is used in the pipeline industry, according to scientific determination, the lead content can reach more than 50ppm. Lead will cause irreversible damage to the blood and nervous system of the human body, so all countries in the world attach great importance to it. The pollution and harm caused by lead have restricted and banned the use of lead brass, which makes the research of environmentally friendly and easy-cutting lead-free or low-lead brass has become a hot spot

Method used

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  • Preparation method of arsenic-added brass for forming corrosion-resistant and easy-bending pipes

Examples

Experimental program
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Effect test

Embodiment 1

[0018] A preparation method of arsenic-added brass for forming corrosion-resistant and easy-bending pipes:

[0019] 1) Ingredients: Weigh the raw materials of each component, and its chemical components include copper 62.3-63%, lead 0-0.08%, iron 0.1-0.15%, nickel 0.1-0.5%, arsenic 0.02-0.1%, Antimony 0-0.005%, the balance is zinc;

[0020] 2) Smelting: Add 35% copper raw material into the casting furnace, raise the temperature to 365°C at a rate of 5°C / min, keep it for 1 hour, then raise the temperature to 665°C at a rate of 15°C / min, hold it for 30 minutes, and then Raise the temperature to 815°C at a rate of 5°C / min. After 10 minutes of heat preservation, add the proportioned amount of arsenic, smelt for 40 minutes, then raise the temperature to 940°C at a rate of 5°C / min, and add the proportioned amount of iron, Nickel, lead, and antimony were smelted for 40 minutes; then raised to 1080°C at a rate of 5°C / min, and kept for 5 minutes, adding the stated proportion of zinc a...

Embodiment 2

[0026] A preparation method of arsenic-added brass for forming corrosion-resistant and easy-bending pipes:

[0027] 1) Ingredients: Weigh the raw materials of each component, and its chemical components include copper 62.3-63%, lead 0-0.08%, iron 0.1-0.15%, nickel 0.1-0.5%, arsenic 0.02-0.1%, Antimony 0-0.005%, the balance is zinc;

[0028] 2) Melting: Put 40% copper raw material into the casting furnace, raise the temperature to 350°C at a rate of 5°C / min, keep it for 1 hour, then raise the temperature to 680°C at a rate of 15°C / min, hold it for 30 minutes, and then Raise the temperature to 830°C at a rate of 5°C / min, and after holding for 10 minutes, add the proportioned amount of arsenic, smelt for 50 minutes, then raise the temperature to 930°C at a rate of 5°C / min, add the proportioned amount of iron, Nickel, lead, and antimony were smelted for 35 minutes; then raised to 1100°C at a rate of 5°C / min, and kept for 5 minutes, adding the stated ratio of zinc and the balance ...

Embodiment 3

[0034] A preparation method of arsenic-added brass for forming corrosion-resistant and easy-bending pipes:

[0035] 1) Ingredients: Weigh the raw materials of each component, and its chemical components include copper 62.3-63%, lead 0-0.08%, iron 0.1-0.15%, nickel 0.1-0.5%, arsenic 0.02-0.1%, Antimony 0-0.005%, the balance is zinc;

[0036]2) Smelting: Add 30% copper raw material into the casting furnace, raise the temperature to 380°C at a rate of 5°C / min, keep it for 1 hour, then raise the temperature to 650°C at a rate of 15°C / min, hold it for 30 minutes, and then The temperature is raised to 800°C at a rate of 5°C / min, and after 10 minutes of heat preservation, the proportioned amount of arsenic is added, smelted for 30 minutes, and then raised to 950°C at a rate of 5°C / min, and the proportioned amount of iron, Nickel, lead, and antimony were smelted for 45 minutes; then raised to 1050°C at a rate of 5°C / min, and kept for 5 minutes, adding the stated ratio of zinc and the...

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PUM

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Abstract

The invention discloses a preparation method of corrosion-resistant arsenic-containing brass for forming an elbow easily. The preparation method mainly comprises the steps of material proportioning, smelting, casting, hot extrusion, annealing and surface treatment. Arsenic is added into a brass alloy, the contents of all the components are optimized and controlled, and the unique smelting and annealing processes are adopted, so that the cutting performance of a copper alloy can be improved to reach the cutting performance of lead brass, the lead content is reduced, and the corrosion-resistantarsenic-containing brass is harmless and environmentally friendly; and meanwhile, the surface of the alloy is treated through a specific compound corrosion inhibitor, so that the problem of corrosioncaused by a low lead content is solved effectively, and the corrosion resistance of the brass alloy is improved.

Description

technical field [0001] The invention relates to the field of alloy manufacturing, in particular to a method for preparing arsenic-added brass for forming corrosion-resistant and easy-bend pipes. Background technique [0002] The main properties of brass include castability, machinability, corrosion resistance, electrical conductivity and thermal conductivity. Among the properties of brass, machinability and corrosion resistance are the first indicators to determine the height of the brass industry. In the traditional process, by adding lead, the brass has better plasticity at high temperature, thereby improving its processability. At the same time, good mechanical properties can be obtained. [0003] At present, lead brass has been widely used in various fields, such as: hardware, auto parts, electrical connectors, valves, pipe joints, etc. But the lead in this kind of material is easy to dissolve in water. If it is used in the pipeline industry, according to scientific de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/04C22C1/02C22F1/08C23F11/10
Inventor 唐予松刘浪康顺蒋爱忠
Owner JIANGXI AUDY BRASSWORK
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