Process of producing Zn-Cu-Ni alloy strip

A production method, zinc-nickel-nickel copper technology, applied in the production field of C7701 strips, can solve the problems of easy discoloration of the product and affect the quality of the finished product, achieve the effect of unchanged color, solve the problem of discoloration, and improve high temperature resistance

Inactive Publication Date: 2009-04-15
ANHUI XINKE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high temperature resistance of the C7701 alloy strip produced through the above process is 180°C, while the usual temperature in the brazing process of surface packaging is 250°C, the product is prone to discoloration, which affects the quality of the finished product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: Casting, face milling, rough rolling, intermediate annealing, cleaning, intermediate rolling, edge trimming, intermediate annealing, finishing rolling, degreasing cleaning, annealing, tension bending straightening, surface treatment, strip warehousing of raw materials, the The above annealing process is to keep the temperature at 350° C. for 6 hours under a hydrogen protective atmosphere with a volume concentration of 30%.

Embodiment 2

[0017] Embodiment 2: Except that the annealing process is under a hydrogen protective atmosphere with a volume concentration of 50%, at 370° C. for 7 hours, the rest is the same as in Embodiment 1.

Embodiment 3

[0018] Embodiment 3: except that the annealing process is under a hydrogen protective atmosphere with a volume concentration of 70%, at 390° C. for 8 hours, the rest is the same as in Embodiment 1.

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PUM

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Abstract

The process of producing Zn-Cu-Ni alloy strip includes the steps of casting, face milling, rought rolling, intermediate annealing, rinsing, intermediate rolling, edge trimming, intermediate annealing, finish rolling, defatting and rinsing, annealing, straightening, surface treatment, etc. The annealing step increased between the defatting and rinsing step and the straightening step is to maintain in 30-75 vol% hydrogen atmosphere at 350-420 deg.c for 6-9 hr, and can form one protecting film layer on the surface of the strip and raise the heat resisting performance from 180 deg.c to 250 deg.c. In addition, sorting proper defatting agent and concentration can further raise the heat resisting performance of the material.

Description

Technical field: [0001] The invention belongs to the technical field of the production method of the zinc-nickel-nickel strip, in particular to the technical field of the production method of the C7701 strip. Background technique: [0002] The C7701 alloy series is an α-single-phase structure alloy of the copper-nickel-zinc ternary system, and is an important structural material with high chemical stability. It has excellent cold and hot workability, ductility, corrosion resistance, fatigue resistance, high elasticity, electrical properties and mechanical properties, and is widely used in the manufacture of structural parts, elastic components, precision instruments, and communications working in humid and corrosive media Industry, liquid crystal oscillator shell, transistor shell. [0003] The common production method of C7701 alloy strip is horizontal continuous casting production method, including casting, face milling, rough rolling, intermediate annealing, cleaning, in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/04C22F1/08C23G1/14C23G5/00
Inventor 龚寿鹏
Owner ANHUI XINKE NEW MATERIALS
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