A processing technology for producing special-shaped cross-section brass strips

A processing technology and special-shaped section technology, applied in the field of special-shaped cross-section brass strip manufacturing technology, can solve the problems of poor surface quality, long idle time of equipment, low material utilization rate, etc. The effect of packaging and product surface smoothness

Inactive Publication Date: 2011-12-21
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

When there was no special-shaped cross-section copper strip processing industry, domestic and foreign related companies used large-tonnage punching machines to punch or cold-press rectangular-section copper strips into special-shaped cross-sections. This method has high requirements for equipment and equipment idle time. Long, short service life of the mold, low material utilization rate, large dimensional error of the processed parts, and low interchangeability
In 2000, Japan and Germany introduced the method of producing brass strips with special-shaped cross-sections by using high-precision flat strips as raw materials through milling and processing; the special-shaped strips produced by this method have poor dimensional accuracy, poor surface quality, and low appearance The pass rate is low and the production cost is high
The reason is that on the one hand, the domestic production cannot meet the needs of electronic manufacturers, and on the other hand, there is still a big gap in quality compared with similar foreign products.

Method used

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  • A processing technology for producing special-shaped cross-section brass strips
  • A processing technology for producing special-shaped cross-section brass strips
  • A processing technology for producing special-shaped cross-section brass strips

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] It is required that the material of the high-precision special-shaped copper strip is H65, the weight of each roll is ≥120Kg, and the section of the copper strip is in the shape of a middle groove. See the appendix for its cross-sectional shape requirements Figure 4 Medium U type, the size requirements are T=1.46±0.02, t=0.6±0.02, C=13.6±0.05, W=61.5±0.1; the physical properties of the product are required to be state (Y), surface hardness HV=120--160 , the tensile strength (Rm / MPa) is 410--540Mpa, and the elongation after breaking (A11.3 / %) reaches 13%; its production process is: melting---upward continuous casting-high precision rolling-high precision Shearing-bright annealing-product rolling-high-precision finished product shearing-inspection-finished product storage; in the finished product rolling process or the final high-precision shearing process, the material is divided into the required reel weight, 100-300Kg / reel.

[0034] 1. Smelting: Strictly follow the c...

Embodiment 2

[0044] The material of high-precision special-shaped copper strip is required to be H62, the weight of each roll is ≥120Kg, and the cross-section of the copper strip is as follows figure 2 T-Boss shape shown. Its production process is: smelting --- upward continuous casting special-shaped section billet-high-precision rolling-high-precision shearing-bright annealing-product rolling-high-precision finished product shearing-inspection-finished product storage; during processing According to the actual situation, the high-precision shearing before bright annealing can be omitted, and the intermediate material is divided into the required reel weight in the finished product rolling process or the final high-precision shearing process, 100-500Kg / reel.

[0045] 1. Melting: Strictly follow the chemical composition requirements of H62. Adding materials: Cu60.5-63.5wt% Zn36.5-39.5wt%; PBi Sb Pb and other impurities should be less than 0.5wt%; use medium frequency induction melting fur...

Embodiment 3

[0055] It is required that the material of high-precision special-shaped copper strip is brass, the weight of each roll is ≥120Kg, and the cross-section of the copper strip is as follows image 3 The L-shaped shaped copper strip shown. Its production process is: smelting---upward continuous casting-high-precision rolling-high-precision shearing-bright annealing-product rolling-high-precision finished product shearing-inspection-finished product storage; In some cases, the high-precision shearing before bright annealing is omitted, and the intermediate material is divided into the required reel weight in the finished product rolling process or the final high-precision shearing process, 100-500Kg / reel.

[0056] As mentioned above in the process of examples 1 and 2, the corresponding copper alloy raw materials are selected, and through smelting, upward continuous casting, groove-shaped / T-shaped special-shaped copper blanks, high-precision rolling, and high-precision shearing for ...

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Abstract

A processing technology for producing brass strips with special-shaped cross-sections, comprising the following steps: melting, 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 round crystallizer tooling equipped with graphite molds used for wire rod production by upward continuous casting was transformed into a design cross-section crystallizer tooling for strip production. Compared with the original processing method for producing brass strips with special-shaped cross-sections, it has the characteristics of low manufacturing cost and cheap tooling 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 method for producing brass strip blanks with special-shaped cross-sections.

Description

technical field [0001] The invention relates to the technical field of non-ferrous metal processing, in particular to a manufacturing process for brass strips with special-shaped cross-sections. Background technique [0002] Special-shaped cross-section brass strips are widely used in 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. When there was no special-shaped cross-section copper strip processing industry, domestic and foreign related companies used large-tonnage punching machines to punch or cold-press rectangular-section copper strips into special-shaped cross-sections. This method has high requirements for equipment and equipment idle time. Long, short service life of the mold, low material utilization rate, large dimensional error...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
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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