Rolling method of Cu-Cr series alloy plates and strips

An alloy plate, cu-cr technology, which is applied in metal rolling, metal rolling, rolling mill control devices, etc. problems such as large annual production capacity, to achieve the effect of component and process optimization, improvement of product quality and finished product qualification rate, and comprehensive performance satisfaction

Active Publication Date: 2020-09-04
SHAANXI SIRUI ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] ①The equipment is large in size, large in investment, and has a large annual production capacity of a line, which is not suitable for small batch and intermittent production of copper alloy products
At present, there are many domestic Cu-Cr alloy plate and strip products with different batch sizes, traditional rolling costs are high, the production cycle is long, and material waste is large.
[0008] ②The oxygen content in the copper liquid is high, the ingot refining is difficult, the yield is low, and the material utilization rate is low
[0009] ③ When the copper or copper alloy liquid flows through the chute and ladle, the refractory material falling off will be brought into the billet during the washing process of the lining wall refractory material, forming non-metallic slag inclusions and reducing the quality of the billet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for rolling Cu-Cr series alloy strips, the chemical composition of the alloy is Cr: 0.5-1.5%, Zr: 0.03-1.8%, Fe≤0.08%, Si≤0.1%, and the balance is copper and Impurities to avoid; the rolling method includes the following steps:

[0037] (1) Batching; raw material preparation and batching are carried out according to the chemical composition of the alloy. The order of adding the alloy is: first melt Cu, keep it warm for 20 minutes after melting, add Cr and Zr at the same time, and then fully degas and remove impurities;

[0038] (2) Upward continuous casting; use the upward continuous casting method to produce Φ30 alloy casting rods, and harvest them into coils; upward continuous casting uses tubular copper sleeves (graphite crystallizers) to extend into and immerse in the molten alloy liquid Under the surface, the upper end is connected with the vacuum pump. Under the action of vacuum negative pressure, the alloy liquid is gradually attracted upward in the crys...

Embodiment 2

[0055] A rolling method of Cu-Cr series alloy strip, the chemical composition of the alloy is Cr: 0.6-1.2%, Fe≤0.10%, Si≤0.1%, Pb≤0.05%, and the balance is copper and unavoidable impurities ; The rolling method comprises the following steps:

[0056] (1) Ingredients: prepare raw materials and ingredients according to the chemical composition of the alloy. The order of adding the alloy is: first melt Cu, keep it warm for 15 minutes after melting, then add Zr, and then fully degas and remove impurities;

[0057] (2) Upward continuous casting; using the upward continuous casting method to produce Φ60 alloy casting rods, and harvest them into coils; upward continuous casting is to use the tubular copper sleeve (graphite crystallizer) to extend into and immerse in the molten alloy liquid Under the surface, the upper end is connected with the vacuum pump. Under the action of vacuum negative pressure, the alloy liquid is gradually attracted upward in the crystallizer, and solidifies ...

Embodiment 3

[0074] A rolling method of Cu-Cr series alloy strip, the chemical composition of the alloy is Cr: 0.2-0.7%, Fe: 0.02%-0.2%, Si: 0.1%-0.10%, the balance is copper and unavoidable impurities; the rolling method includes the following steps:

[0075] (1) Ingredients: prepare raw materials and ingredients according to the chemical composition of the alloy. The order of adding the alloy is: first melt Cu, heat it for 18 minutes after melting, then add Cr, and then fully degas and remove impurities;

[0076] (2) Upward continuous casting; use the upward continuous casting method to produce Φ50 alloy casting rods, and harvest them into coils; upward continuous casting uses tubular copper sleeves (graphite crystallizers) to extend into and immerse in the molten alloy liquid Under the surface, the upper end is connected with the vacuum pump. Under the action of vacuum negative pressure, the alloy liquid is gradually attracted upward in the crystallizer, and solidifies into a bright ing...

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PUM

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Abstract

The invention discloses a rolling method of Cu-Cr series alloy plates and strips. Alloy comprises the chemical components of 0.5-1.5% of Cr, 0.03-1.8% of Zr, <=0.08% of Fe, <=0.1% of Si and the balance of copper and unavoidable impurities. The rolling method comprises the steps of (1) proportioning; (1) upward-drawing continuous casting; (3) hot continuous rolling of a square billet; (4) solutiontreatment; (5) surface milling; (6) rough rolling; (7) aging treatment; (8) surface treatment; (9) finish rolling; (10) take-up; and (11) slitting. The method can lower production cost and improve product quality and the percent of pass of finished products, thereby greatly meeting market demands.

Description

technical field [0001] The invention belongs to the field of strip rolling technology of alloy materials, and in particular relates to a rolling method of Cu-Cr series alloy strips. Background technique [0002] In recent years, my country's demand for high-precision, high-performance copper and copper alloy plates and strips has risen sharply. The demand for copper alloy plates is becoming more and more urgent. Copper strip materials are widely used in key areas such as the new generation of information and communication technology industry, aerospace equipment, energy-saving and new energy vehicles, and new materials. The focus of special fund support for technological transformation. [0003] At present, the rolling of CuCrZr strip is mainly two methods of continuous casting and rolling and billet rolling. [0004] Continuous casting and rolling is a copper rolling process in which molten copper is poured into a continuous casting machine to cast a copper billet, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/02B22D11/14C22F1/08C23G1/10B21B3/00B21B37/00B21B37/16B21B37/46B21B37/74
CPCB21B3/00B21B37/00B21B37/16B21B37/46B21B37/74B21B2003/005B22D11/004B22D11/145C22C1/02C22C9/00C22F1/002C22F1/08C23G1/103
Inventor 靖林庾高峰张航王聪利张琦吴斌马明月李小阳侯玲
Owner SHAANXI SIRUI ADVANCED MATERIALS CO LTD
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