A processing method for producing brass strip

A processing method and technology for brass strips, applied in the field of non-ferrous metal processing, can solve problems such as unfavorable development of national industry, high equipment manufacturing cost, inflexible operation, etc., and achieve easy electroplating or coating, improved material utilization, and physical properties. uniform effect

Inactive Publication Date: 2011-12-14
赤峰京铜铜业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method of producing brass blanks has the advantages of being suitable for mass production, it has prominent disadvantages such as high equipment manufacturing costs, inflexible operation, and high production costs.
The above situation has caused relevant domestic manufacturers to import more brass strip raw materials at this stage, which is not conducive to the development of national industries.

Method used

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  • A processing method for producing brass strip
  • A processing method for producing brass strip
  • A processing method for producing brass strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment requires that the material of the high-precision finished brass strip is H65, the thickness of the finished product is 1.5 ± 0.02mm, and the width is 61.5 ± 0.1mm. The physical properties of the finished product require a semi-hard state (HV=106), and the tensile strength (Rm / MPa) is 355--460Mpa, and the elongation rate after breaking (A11.3 / %) reaches 25%; the weight of each roll is ≥120Kg, and its production process is as follows figure 1 Shown; In the finished rolling process or the final high-precision shearing process, the intermediate material is divided into the required reel weight, 120-300Kg / reel.

[0023] 1. Smelting: Strictly follow the chemical composition requirements of H65. Adding materials: Cu 63.5--68wt% Zn 32-36.5wt%; the total of P BiSb Fe Pb should be ≤0.3wt%; H65 scrap can be used in the production process; use intermediate frequency The melting efficiency of induction melting furnace and power frequency induction holding furnace is...

Embodiment 2

[0032] This embodiment requires that the material of the high-precision finished brass strip is H90, the thickness of the finished product is 0.8 ± 0.01mm, and the width is 48 ± 0.05mm. The physical properties of the finished product require a tensile strength Rm (N / mm 2 ) is ≥390Mpa, and the elongation rate A11.3 after breaking reaches 3%; the weight of each roll is ≥100Kg, and its production process is as follows figure 1 Shown; In the finished rolling process or the final high-precision shearing process, the intermediate material is divided into the required reel weight, 90-110Kg / reel.

[0033] 1. Smelting: Strictly follow the chemical composition requirements of H90. Adding materials: Cu 88.0-91.0wt% Zn 9-12wt%; the total of P Bi SbFe Pb should be ≤0.3wt%; H65 scrap can be used in the production process; use medium frequency induction The melting efficiency of the melting furnace and the power frequency induction holding furnace is 0.75 tons / hour.

[0034] 2. Upward conti...

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Abstract

A processing method for producing brass strips, comprising the following steps: smelting, casting, high-precision rolling, bright annealing, finished product rolling, and finished product shearing, characterized in that the casting adopts upward continuous casting to prepare billets, and The circular crystallizer tooling equipped with graphite moulds, which was used for wire rod production by upward continuous casting, was transformed into a designed cross-section crystallizer tooling for strip production. Compared with the original brass strip processing method, it has the characteristics of low manufacturing cost and cheap tooling and molds. The surface of the blank obtained by the invention is bright, the crystal texture is uniform, and the surface milling is not required in the subsequent processing. At the same time, the method has low energy consumption, and is a high-efficiency, low-cost brass strip blank production method.

Description

technical field [0001] The invention relates to the technical field of nonferrous metal processing, in particular to a processing method for brass strips. Background technique [0002] Brass strips are widely used in the electronics and electrical industries to manufacture parts and components that can meet both electrical conductivity and strength requirements. It is widely used in the fields of automobiles, mobile phones, computers, industrial electrical appliances, military industry and handicrafts. There are two commonly used traditional methods for processing brass strips. One is to obtain blanks by horizontal continuous casting, and then manufacture brass strips through the processes of milling, cold rolling, annealing, and surface cleaning; the other is to use For ingots with a thickness of about 500mm, the ingots are heated until the material softens and then rolled to a thickness of about 20mm, and then the brass strips are manufactured through the processes of col...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/14
Inventor 莫志俊姚卫星刘建民
Owner 赤峰京铜铜业有限公司
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