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Elastic tin brass alloy material and preparation processing method for the same

A technology of alloy material and processing method, which is applied in the field of elastic tin-brass alloy material and its preparation and processing, can solve the problems of high price, toxicity, environmental health damage, etc., and achieve high conductivity and stress relaxation resistance, preparation process Simple, good conductivity

Active Publication Date: 2014-12-24
NINGBO XINGYE SHENGTAI GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, copper-based elastic alloys in the domestic market are mainly made of beryllium bronze and tin phosphor bronze. Among them, beryllium bronze is the most commonly used high-elastic alloy at present, but because beryllium oxide and dust are toxic, it is harmful to the environment and human body. Health has certain damage, which greatly limits the industrialization and use of beryllium bronze
However, due to the high content of Sn in tin phosphor bronze, which is generally greater than 4%, reverse segregation of Sn is easy to occur in the production process, and it needs to be homogenized for a long time, which seriously affects the production efficiency of the alloy.
And the price of Sn is relatively expensive, adding high content of Sn will increase the production cost and affect the industrialization and application of the alloy

Method used

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  • Elastic tin brass alloy material and preparation processing method for the same
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The alloy of the invention is smelted using the following raw materials: electrolytic copper, pure nickel plate, zinc ingot, cobalt oxide powder, pure tin ingot, copper-boron master alloy, copper-phosphorus and copper-magnesium master alloy. The composition of the alloy is shown in Example 1 of Table 1.

[0028] 1. Melting: semi-continuous smelting and casting using medium frequency induction furnace. The order of adding the alloy is: add electrolytic copper and nickel plates, raise the temperature to 1190°C, and after the melt is completely melted, cover with 50mm of burning charcoal, keep warm for 15 minutes, add zinc ingots, and wait for the melt to bubble for 5 minutes , add cobalt oxide powder and tin ingots wrapped with copper foil, and then cover with 30mm of burning charcoal, then add copper-boron master alloy and copper-phosphorus master alloy, keep warm for 5 minutes, add copper-magnesium master alloy, after fully stirring, cover 20mm thick The dry graphite p...

Embodiment 2

[0037] The alloy of the present invention is smelted using the following raw materials: electrolytic copper, pure nickel plate, zinc ingot, cobalt oxide powder, pure tin ingot, copper-boron master alloy, copper-lanthanum master alloy and copper-magnesium master alloy. The composition of the alloy is shown in Example 2 of Table 1.

[0038]1. Melting: semi-continuous smelting and casting using medium frequency induction furnace. The order of adding the alloy is: add electrolytic copper and nickel plates, raise the temperature to 1250°C, and cover with 50mm of burning charcoal after the melt is completely melted, keep warm for 15 minutes, add zinc ingots, and wait for the melt to bubble for 5 minutes , add cobalt oxide powder and tin ingots wrapped with copper foil, and then cover 30mm of burning charcoal, then add copper-boron master alloy, copper-lanthanum master alloy, keep warm for 5min, add copper-magnesium master alloy, after fully stirring, cover 20mm thick The dry graphi...

Embodiment 3

[0047] The alloy of the present invention is smelted using the following raw materials: electrolytic copper, pure nickel plate, zinc ingot, cobalt oxide powder, pure tin ingot, copper-boron master alloy, copper-lanthanum master alloy and copper-magnesium master alloy. The composition of the alloy is shown in Example 3 of Table 1.

[0048] 1. Melting: semi-continuous smelting and casting using medium frequency induction furnace. The order of adding the alloy is: add electrolytic copper and nickel plates, raise the temperature to 1200°C until the melt is completely melted, cover with 50mm of burning charcoal, keep warm for 15 minutes, add zinc ingots, and wait for the melt to bubble for 5 minutes , add cobalt oxide powder and tin ingots wrapped with copper foil, and then cover 30mm of burning charcoal, then add copper-boron master alloy, copper-lanthanum master alloy, keep warm for 5min, add copper-magnesium master alloy, after fully stirring, cover 20mm thick The dry graphite ...

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Abstract

The invention relates to elastic tin brass alloy material and a preparation processing method for the same and belongs to the nonferrous metal processing field. The elastic tin brass alloy material is composed of 86-89% of Cu, 0.9-1.1% of Sn, 0.5-1% of Ni, 0.05-0.5% of Co, 0.005-0.01% of Mg and rest of Zn by weight. The preparation processing method includes that a, preparing materials according to the mass percent, adding materials, smelting and casting; b, hot rolling; c, performing primary cold rolling; d, performing intermediate annealing; e, milling; f, performing secondary cold rolling; g, performing low temperature annealing. The tensile strength sigma b of the copper alloy is 400 to 900 MPa, the plastic elongation delta is 5-45%, the conductivity is 25-32% IACS, and the elasticity modulus is 120 to 125 GPa. The elastic tin brass alloy material is capable of substituting the existing tin-phosphor bronze to be broadly used for different fields, such as spring contact pieces, electric contacts, spot welding poles, relays, electrical contact components and plug-in components.

Description

technical field [0001] The invention relates to an elastic tin-brass alloy material and a preparation and processing method thereof, belonging to the field of nonferrous metal processing. Background technique [0002] High-strength and high-elasticity copper-based alloys are widely used in industries such as medical treatment, aviation and navigation instruments, machinery manufacturing, instrumentation and instrument manufacturing due to their high strength, excellent elasticity, fatigue resistance, and small elastic hysteresis. At present, copper-based elastic alloys in the domestic market are mainly made of beryllium bronze and tin phosphor bronze. Among them, beryllium bronze is the most commonly used high-elastic alloy at present, but because beryllium oxide and dust are toxic, it is harmful to the environment and human body. There are certain damages to health, which greatly limits the industrialization and use of beryllium bronze. However, due to the high content of ...

Claims

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Application Information

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IPC IPC(8): C22C9/04C22C1/02
Inventor 陆群彭丽军苑和锋杨群央沈立邦陈卫军郑利明马红军郑文丰王忠祥史科军
Owner NINGBO XINGYE SHENGTAI GROUP
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