A kind of cu-ni-si-mg alloy strip casting and rolling method and casting and rolling equipment

A cu-ni-si-mg, alloy plate technology, applied in metal rolling and other directions, can solve the problem of reducing the comprehensive performance indicators such as conductivity and strength of Cu-Ni-Si copper alloy, Cu-Ni-Si alloy casting The adverse effects of rolling slab performance indicators and the inclusion of various oxides can reduce the amount of milled surface peeling, enrich processing methods, and reduce oxidation.

Active Publication Date: 2020-01-21
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the existing twin-roll continuous casting technology is often carried out directly in atmospheric conditions, if this technology is directly applied to Cu-Ni-Si alloy plates and strips, the following problems will occur: firstly, in the atmospheric environment, Cu- Ni-Si series alloys are prone to oxidation during smelting and casting and rolling, and the oxide inclusions in the rolling process will act as crack sources to cause cracks in the rolling process; secondly, Cu-Ni-Si series casting and rolling slabs obtained under atmospheric conditions are easily The appearance of various oxide inclusions will significantly reduce the comprehensive performance indicators such as the conductivity and strength of Cu-Ni-Si copper alloys
In addition, Cu-Ni-Si alloys will have Ni under the condition of equilibrium solidification process 2 Si precipitated phase, if the cooling rate in the casting and subsequent cooling process is slow, there will be coarse Ni 2 Precipitation of Si adversely affects the performance index of Cu-Ni-Si alloy cast-rolled slab

Method used

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  • A kind of cu-ni-si-mg alloy strip casting and rolling method and casting and rolling equipment
  • A kind of cu-ni-si-mg alloy strip casting and rolling method and casting and rolling equipment
  • A kind of cu-ni-si-mg alloy strip casting and rolling method and casting and rolling equipment

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Effect test

Embodiment 1

[0042] A method for casting and rolling a Cu-Ni-Si-Mg alloy sheet and strip, comprising the following steps.

[0043] 1) According to the mass ratio Cu:Ni:Si:Mg=94:2:0.5:0.07, weigh the cathode pure copper, industrial pure nickel, industrial pure silicon and industrial pure magnesium.

[0044] 2) Put the cathode pure copper and industrial pure nickel into the melting crucible 2, the vacuum degree in the equipment is less than 0.1Pa, heat it to 1250℃, and smelt it. After the smelting is completed, add the industrial pure silicon and industrial pure magnesium into the melt. Fully smelting and stirring to obtain Cu-Ni-Si-Mg alloy melt.

[0045] 3) After smelting, lift the stopper rod 6 to pour the Cu-Ni-Si-Mg alloy melt 4 into the casting mill through the distributor 7 for casting and rolling. During the implementation process, the rolls of the left casting roll 9 and the right casting roll 10 cooperate with each other. like Figure 5 As shown in the figure, a special-shaped "I...

Embodiment 2

[0048] A method for casting and rolling a Cu-Ni-Si-Mg alloy sheet and strip, comprising the following steps.

[0049] 1) According to the mass ratio Cu:Ni:Si:Mg=97:5:0.8:0.14, weigh the cathode pure copper, industrial pure nickel, industrial pure silicon and industrial pure magnesium.

[0050] 2) Put the cathode pure copper and industrial pure nickel into the melting crucible 2, the vacuum degree in the equipment is less than 0.1Pa, heat to 1280 ℃, and smelt, after the smelting is completed, add industrial pure silicon and industrial pure magnesium into the melt, Fully smelting and stirring to obtain Cu-Ni-Si-Mg alloy melt.

[0051] 3) After smelting, lift the stopper rod 6 to pour the Cu-Ni-Si-Mg alloy melt 4 into the casting mill through the distributor 7 for casting and rolling. During the implementation process, the rolls of the left casting roll 9 and the right casting roll 10 cooperate with each other. like Image 6 As shown in the figure, a special-shaped "toothed" se...

Embodiment 3

[0054] The method for casting and rolling a Cu-Ni-Si-Mg alloy sheet and strip includes the following steps:

[0055] 1) According to the mass ratio Cu:Ni:Si:Mg=96.2:3.0:0.7:0.1, weigh the cathode pure copper, industrial pure nickel, industrial pure silicon and industrial pure magnesium.

[0056] 2) Put the cathode pure copper and industrial pure nickel into the melting crucible 2, the vacuum degree in the equipment is less than 0.1Pa, heat it to 1260℃, and smelt it. After the smelting is completed, add the industrial pure silicon and industrial pure magnesium into the melt. Fully smelting and stirring to obtain Cu-Ni-Si-Mg alloy melt.

[0057] 3) After smelting, lift the stopper rod 6 to pour the Cu-Ni-Si-Mg alloy melt 4 into the casting and rolling mill through the distributor 7 for casting and rolling, and the thickness of the cast-rolled strip is 5 mm; the cast-rolled slab is exited from the casting roll The infrared thermometer 12 at the position measures the temperature,...

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Abstract

The invention discloses a cast rolling method and a cast rolling device for a Cu-Ni-Si-Mg alloy board and belongs to the field of non-ferrous metal processing. The cast rolling method includes the steps of: preparing raw materials according to the mass ratio of Cu:Ni:Si:Mg = 94-97:2-5:0.5-0.8:0.07-0.14, performing vacuum melting and rapidly performing cooling rolling under a low temperature condition. A sealed circulating water path is arranged in rollers of the device; the rollers are connected to a roller distance control hydraulic apparatus. An infrared temperature meter is arranged below the rollers. The device is also provided with plurality groups of high-pressure gas nozzles, a high-pressure centrifugal blower and a water-cooling heat exchanger. The method and device can effectivelyprevent cast rolling cracks due to oxidization and prevent oxidization of the Cu-Ni-Si-Mg alloy during the cast rolling, effectively inhibit separation of Ni2Si separation phase during the balance setting process, and significantly improve quality and performance of a Cu-Ni-Si-Mg alloy board tape.

Description

technical field [0001] The invention belongs to the field of forming processing of thin non-ferrous metal strips, and in particular relates to a high-performance copper alloy strip casting-rolling processing method and casting-rolling equipment thereof. Background technique [0002] Copper alloy is the main metal structural material for engineering applications in electronics, electric power and other industries. It has played a huge role in important fields such as national defense and military, electronic communication technology, and with the rapid development of electronics, electric power and other industries, the industry requires a large number of high-strength Conductive copper alloy plate and strip products. Cu-Ni-Si alloy is a typical age-strengthened alloy, which has both high strength and high conductivity, and has gradually become the focus of research on high-strength and high-conductivity copper alloys. [0003] At present, the traditional production method o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/06C22C1/02B22D11/06B22D11/20B21B1/46
CPCB21B1/46B22D11/004B22D11/0622B22D11/202C22C1/02C22C9/06
Inventor 顾涛侯华赵宇宏徐凤强徐小龙闫锋张家腾
Owner ZHONGBEI UNIV
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