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Low-cost elastic brass alloy

A brass alloy, low-cost technology, applied in the field of low-cost elastic brass alloy, can solve the problem of high cost of elastic brass alloy, and achieve the effects of easy processing and simple preparation process

Active Publication Date: 2012-05-09
JINTIAN COPPER GROUP CORP NINGBO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN101050494B announced a kind of elastic brass alloy material and production method thereof, but its Ni content reaches 4-5%, because the price of nickel is higher than tin, therefore, the elastic brass alloy cost of this invention is very high

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The raw materials are 69.58% by weight of Cu, 25.75% by weight of Zn, 3.56% by weight of Al, 0.59% by weight of Ni, 0.41% by weight of Mn, and the balance is the proportion of unavoidable impurities. It is melted in a 50Kg intermediate frequency induction furnace, the melting temperature is 1100-1250°C, and the pouring temperature is 1080-1150°C. Iron mold casting, the ingot size is 60mm (thickness) × 120mm (width) × 450mm (length). The size of the ingot after face milling is 48mm (thickness) x 120mm (width) x 450mm (length). Then it is prepared according to the process of hot rolling-rough rolling-annealing-intermediate rolling-annealing-pre-finishing rolling-annealing-pickling-finishing rolling. The face-milled ingot is first heated in a walking furnace for 60-120 minutes at a temperature of 750-850°C, and then rolled into a 3.5mm-thick slab by a φ305 two-roller hot rolling mill. Rough rolling and intermediate rolling are both rolled by φ250×350 four-high rolling mi...

Embodiment 2

[0022] The raw materials are 71.52% by weight of Cu, 23.89% by weight of Zn, 3.37% by weight of Al, 0.57% by weight of Ni, 0.53% by weight of Mn, and the balance is the proportion of unavoidable impurities. It is melted in a 50Kg intermediate frequency induction furnace, the melting temperature is 1100-1250°C, and the pouring temperature is 1080-1150°C. Iron mold casting, the ingot size is 60mm (thickness) × 120mm (width) × 450mm (length). The size of the ingot after face milling is 48mm (thickness) x 120mm (width) x 450mm (length). Then it is prepared according to the process of hot rolling-rough rolling-annealing-intermediate rolling-annealing-pre-finishing rolling-annealing-pickling-finishing rolling. The face-milled ingot is first heated in a walking furnace for 60-120 minutes at a temperature of 750-850°C, and then rolled into a 3.5mm-thick slab by a φ305 two-roller hot rolling mill. Rough rolling and intermediate rolling are both rolled by φ250×350 four-high rolling mi...

Embodiment 3

[0030] The raw materials are 71.61% by weight of Cu, 23.7% by weight of Zn, 3.37% by weight of Al, 0.53% by weight of Ni, 0.28% by weight of Mn, and the balance is the proportion of unavoidable impurities. It is melted in a 50Kg intermediate frequency induction furnace, the melting temperature is 1100-1250°C, and the pouring temperature is 1080-1150°C. Iron mold casting, the ingot size is 60mm (thickness) × 120mm (width) × 450mm (length). The size of the ingot after face milling is 48mm (thickness) x 120mm (width) x 450mm (length). Then it is prepared according to the process of hot rolling-rough rolling-annealing-intermediate rolling-annealing-pre-finishing rolling-annealing-pickling-finishing rolling. The face-milled ingot is first heated in a walking furnace for 60-120 minutes at a temperature of 750-850°C, and then rolled into a 3.5mm-thick slab by a φ305 two-roller hot rolling mill. Rough rolling and intermediate rolling are both rolled by φ250×350 four-high rolling mil...

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Abstract

The invention discloses a low-cost elastic brass alloy. The alloy is characterized by comprising the following components by weight percent: 69-72% of copper, 23-26% of zinc, 3.3-3.6% of aluminum, 0.1-1.0% of nickel, 0.12-0.53% of manganese and the balance inevitable impurities. The low-cost elastic brass has the same hardness, elastic modulus and elongation rate as phosphor bronze; and the strength is higher than that of phosphor bronze in the Y2 state. The product is used to prepare connectors and conduct tests such as insert and extract and monopole lifting, and the obtained parameters all conform to the national standards. Meanwhile, the preparation process of the alloy is easy, the processing method is simple and the alloy is suitable for industrialized production. The elastic brass has the similar performances to phosphor bronze and the raw material cost is only 75%-80% of that of phosphor bronze, thus the elastic brass alloy can be used in the connector field to replace the phosphor bronze alloy.

Description

technical field [0001] The present invention relates to a low cost elastic brass alloy replacing tin phosphor bronze material. Background technique [0002] Highly elastic copper-based materials are widely used in the fields of various elastic components such as electrical connectors, springs, switches, contacts, and industrial fields such as electronics, communications, and instruments. At present, high-elastic copper-based materials are mainly beryllium bronze, tin phosphor bronze and other materials. However, beryllium bronze has disadvantages such as low working temperature, complex production process, poisonous beryllium oxide, harmful to human body, and high price, while the alloying element tin in tin phosphor bronze is expensive, high energy consumption, and high cost. At the same time, our country is in a period of rapid economic growth, and the electronics, electrical and other industries are developing rapidly. The demand for tin phosphor bronze strips is growing...

Claims

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Application Information

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IPC IPC(8): C22C9/04
Inventor 李杰王永如洪燮平戴姣燕武跃维刘鑫霞
Owner JINTIAN COPPER GROUP CORP NINGBO
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