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Production process of tin-copper alloy strip

A tin-copper alloy and production process technology, which is applied in the field of production technology of tin-copper alloy strips, can solve the problems of large relative reduction, small absolute reduction, dendrite segregation, etc., so as to improve elastic performance and wear resistance. performance, the effect of increasing the content of tin

Inactive Publication Date: 2011-05-25
ANHUI XINKE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the production of tin-copper alloy strips encounters some problems with the increase of tin content. First, in the casting process, there are micro-shrinkage, dendrite segregation and reverse segregation problems in the tin-copper alloy structure, which affect the quality of tin-copper alloy materials. Second, when the tin content is high, the performance of the strip is better, and the high-performance thin strip products require high processing rate rolling, so that the product performance can meet the requirements. Compared with the thin strip, under the same processing rate, the thin strip rolled The absolute reduction of rolling will increase; while rolling high-performance strip is characterized by small absolute reduction and large relative reduction. The force is large, and the rolling pressure limit alarm often occurs; the third is that the strip is thinner after the pre-finishing process, and the bonding caused by the annealing process can easily affect the tolerance and rolling stability during rolling.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The production process of this tin-copper alloy strip includes casting process→annealing process→face milling process→cold rough rolling process→intermediate annealing process→intermediate rolling process→intermediate annealing process→degreasing and cleaning process→pre-finishing process →Annealing process→Finish rolling process→Low temperature annealing process→Degreasing cleaning process→Stretch bending and straightening process→Shearing process→Packing process.

[0043] The specific process flow is:

[0044] (1) Casting process:

[0045] Add tin-copper alloy materials into the holding furnace, control the temperature in the furnace to 1190°C, install the thermocouple in the furnace on the top of the protective sleeve, make it closer to the liquid in the furnace, and test the temperature more accurately, thereby reducing the size of the holding furnace. The range of temperature fluctuations, the control pulling speed is 10mm / s;;

[0046] (2) Annealing process:

[...

Embodiment 2

[0076] The production process of this tin-copper alloy strip includes casting process→annealing process→face milling process→cold rough rolling process→intermediate annealing process→intermediate rolling process→intermediate annealing process→degreasing and cleaning process→pre-finishing process →Annealing process→Finish rolling process→Low temperature annealing process→Degreasing cleaning process→Stretch bending and straightening process→Shearing process→Packing process.

[0077] The specific process flow is:

[0078] (1) Casting process:

[0079] Put the tin-copper alloy material into the holding furnace, control the temperature in the furnace to 1220°C, install the thermocouple in the furnace on the top of the protective cover, make it closer to the liquid in the furnace, and test the temperature more accurately, thereby reducing the size of the holding furnace. The range of temperature fluctuations, the control pulling speed is 14mm / s;

[0080] (2) Annealing process:

...

Embodiment 3

[0110] The production process of this tin-copper alloy strip includes casting process→annealing process→face milling process→cold rough rolling process→intermediate annealing process→intermediate rolling process→intermediate annealing process→degreasing and cleaning process→pre-finishing process →Annealing process→Finish rolling process→Low temperature annealing process→Degreasing cleaning process→Stretch bending and straightening process→Shearing process→Packing process.

[0111] The specific process flow is:

[0112] (1) Casting process:

[0113] Add tin-copper alloy materials into the holding furnace, control the temperature in the furnace to 1200°C, install the thermocouple in the furnace on the top of the protective sleeve, make it closer to the liquid in the furnace, and test the temperature more accurately, thereby reducing the size of the holding furnace The range of temperature fluctuations, the control pulling speed is 12mm / s;;

[0114] (2) Annealing process:

[0...

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Abstract

The invention discloses a production process of a tin-copper alloy strip, which comprises the steps of casting, annealing, surface milling, cold rough rolling, intermediate annealing, intermediate rolling, intermediate annealing, degreasing and cleaning, pre finish rolling, annealing, finish rolling, low-temperature annealing, degreasing and cleaning, bend straightening, shearing and packaging. Through the improvements on casting, annealing and finish rolling, processing difficulties caused by the improvement of the performance of a copper alloy strip after the increase of tin content can be solved, the tin content in copper alloy is increased, and after the process flows, the measured tin content in the tin-containing copper alloy strip is 9-11%. The invention can effectively increase the tin content in the copper alloy and effectively improves the elastic properties and the wear resistance of the tin copper alloy, the tensile strength of the strip produced by the production process disclosed by the invention is larger than 830MPa and can reach the peak of 920MPa.

Description

technical field [0001] The invention belongs to the field of copper alloy production, and in particular relates to a production process of a tin-copper alloy strip. Background technique [0002] As a copper alloy material, beryllium bronze is used in electronic devices due to its high elasticity, wear resistance, conductive safety and other characteristics. However, due to the high cost of beryllium bronze and the fact that beryllium is a metal element harmful to the human body, the application of beryllium bronze alloy materials is greatly limited. Current research shows that when the tin content in the tin-copper alloy reaches a certain range, the elastic properties and wear resistance of the tin-copper alloy material can be greatly improved. Tin-containing copper alloy materials can gradually become a substitute for beryllium bronze materials. [0003] At present, the production of tin-copper alloy strips encounters some problems with the increase of tin content. First,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
Inventor 马震寰赵莉芦锐
Owner ANHUI XINKE NEW MATERIALS
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