Preparation method of double lateral insert silver-copper composite strip

A composite strip, inlaid technology, applied in metal rolling, manufacturing tools, welding equipment, etc., can solve the problem that the width and size of silver bars and copper bars are not easy to control, the side stability of silver bars and copper bars is poor, and the hot-rolled composite Large processing rate and other problems, to achieve the effect of beautiful products, qualified resistivity and good stability

Active Publication Date: 2010-03-17
西安诺博尔稀贵金属材料股份有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

The above method will produce oxidation due to hot rolling and compounding, so that the stability of the comb

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for preparing a silver / copper composite strip with three silver bars alternated with each other. A plane milling machine is used to mill three through holes for a copper plate, and the thickness of the copper plate is 10mm. Rough milling first, the size of the through hole is 3.5mm, and then the size milling hole, the size of the through hole is 4.0mm, to ensure that the inner surface of the copper hole is smooth. Soak the copper plate after milling the through hole in gasoline for 30 minutes to remove oil, clean it with an ultrasonic cleaner, dehydrate it with alcohol, and dry it in the air; prepare 2 Ag72Cu plates with a thickness of 0.5 mm, and 1 silver plate with a thickness of 20 mm. Composite method Composite the upper and lower sides of the silver plate with the Ag72Cu plate, anneal at 600°C / 1h, roll to a thickness of 4mm, cut three pieces and embed them in the copper holes. Put the inlaid blank into a vacuum furnace for brazing at a temperature of 800°C...

Embodiment 2

[0018] A method for preparing silver / copper composite strips with nine alternate silver bars. A plane milling machine is used to mill nine through holes on a copper plate, and the thickness of the copper plate is 10 mm. Rough milling first, the size of the through hole is 3.5mm, and then size milling, the size of the through hole is 4.0mm, to ensure that the inner surface of the copper hole is smooth. Soak the copper plate after milling the through hole in gasoline for 30 minutes to remove oil, clean it with an ultrasonic cleaner, dehydrate it with alcohol, and dry it in the air; prepare 2 Ag45Cu plates with a thickness of 0.5 mm, and 1 silver plate with a thickness of 20 mm. Composite method The upper and lower sides of the silver plate are laminated with the Ag45Cu plate, annealed at 600°C / 1h, rolled to a thickness of 4mm, and nine pieces are cut and embedded in the copper holes. Put the inlaid blank into a vacuum furnace for brazing at a temperature of 800°C / 25min. After br...

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Abstract

The invention relates to a preparation method of a composite strip, in particular to a preparation method of an interval lateral silver-copper composite strip. The method is characterized in that thepreparation method comprises the following steps: (1) opening strip symmetric through-holes in the centre of a strip copper plate along the length direction; (2) inserting corresponding silver-copperalloy/silver/silver-copper alloy triple composite strips in the strip through-holes to form composite blank; placing the inserted blank in a vacuum brazing furnace, keeping temperature to 780-850 DEGC for 10-30min, brazing to connected the silver-copper alloy/silver/silver-copper alloy triple composite strips inserted in the through-holes with the inner edge of the strip through-holes of the copper plate; and (4) processing the brazed and connected composite blank through cold rolling, annealing and fine rolling to obtain the finished product. The silver-copper composite strip prepared by themethod of the invention has high strength at the lateral connection position of silver and copper strips and good stability; the material can be used in the low-voltage fast acting fuse, thus savinga great number of precious metals -- pure silver and reducing the production cost.

Description

technical field [0001] The invention relates to a preparation method of a composite strip, in particular to a preparation method of an interphase lateral silver-copper composite strip. Background technique [0002] As a substitute for pure silver strips, silver / copper composite strips are mainly used in low-voltage fuses. It not only maintains the fast fusing effect of the original silver belt, but also saves a lot of material costs. With the development of electric power, metallurgy, chemical industry, petrochemical and other industries, a large market will be formed, and it will gradually replace the pure silver fusing belt material currently used in large quantities. . [0003] At present, the preparation methods of silver / copper composite strips have been disclosed in Chinese patents "copper / silver / copper double-sided composite plate strip" (CN2718768Y, published on August 17, 2005) and "a double-sided inlaid "Preparation method of hot-rolled composite silver-copper st...

Claims

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Application Information

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IPC IPC(8): B21B1/22B21B47/00B23K1/008B23K20/08B21B37/58C21D9/52C21D11/00
Inventor 李浩陈昊韩吉庆唐进高文柱赵鸿磊杨建朝
Owner 西安诺博尔稀贵金属材料股份有限公司
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