Method for producing beryllium bronze strip by using continuous heat-treating furnace

A heat treatment furnace, beryllium bronze technology, applied in heat treatment furnaces, heat treatment equipment, furnaces, etc., can solve problems such as unstable temperature control accuracy, difficulty in producing thick strips, and insufficient air flotation capacity, so as to reduce production costs and increase production capacity , the effect of uniformity guarantee

Active Publication Date: 2014-05-14
CNMC NINGXIA ORIENT GRP
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Problems solved by technology

[0004] At present, the production of beryllium bronze strips is mostly produced by horizontal continuous heat treatment furnaces, which have the following technical defects: 1) The existing horizontal continuous heat treatment furnaces all use electric heating, which has high energy consumption and high energy consumption. The temperature control accuracy is unstable at high temperature
2) For horizontal furnaces, air flotation is generally used in the furnace, and the air flotation capacity is obviously insufficient when the temperature exceeds 800 ° C, and it is difficult to produce thick strips

Method used

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  • Method for producing beryllium bronze strip by using continuous heat-treating furnace

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Embodiment 1

[0020] The beryllium bronze strip used for annealing is a QBe2 / C17200 strip with a thickness of 0.5mm, a width of 450mm and a length of 1000m, and its original mechanical properties are shown in Table 1-1.

[0021] 1. Pretreatment: The strip is degreased, degreased, washed with high-pressure hot water, and blown with hot air in order to ensure the surface of the strip is clean, and then enters the furnace body from the top of the furnace body sequentially through the inlet looper and the inlet pinch roller. The entire belt speed was set at 10 m / min.

[0022] 2. Preheating: After the strip enters the furnace, it first enters the preheating zone of the heating section. The temperature of the preheating zone is set at 750-800°C, and the strip enters the heating zone of the heating section after preheating. The combustion control method mainly adopts flow regulation. The flow of natural gas and combustion-supporting air are calculated by a microcomputer and then accurately propo...

Embodiment 2

[0028] 1. Pretreatment: The beryllium bronze strip for annealing is a C17510 strip with a thickness of 0.3mm, a width of 430mm and a length of 1500m, and its original mechanical properties are shown in Table 2-1. The strip is degreased, degreased, washed with hot water, and blown with hot air in order to ensure the surface of the strip is clean, and then enters the furnace body from the top of the furnace body sequentially through the inlet looper and the inlet pinch roller. The entire belt speed was set at 25 m / min.

[0029] 2. Preheating: After the strip enters the furnace, it first enters the preheating zone of the heating section. The temperature in the preheating zone is set at 800-880°C, and the strip enters the heating zone of the heating section after preheating. The combustion control method mainly adopts flow regulation. The flow of natural gas and combustion-supporting air is calculated by a microcomputer and then accurately proportioned, and then input into the fu...

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Abstract

The invention relates to a method for producing beryllium bronze strips by using a continuous heat-treating furnace. The method comprises pre-treatment of strips, preheating, heating, heat preserving and cooling and is characterized in that all the processes of preheating, heating, temperature preserving and cooling are realized in a vertical quenching furnace, natural gas is used as fuel of a heat source needed by the vertical quenching furnace, and nitrogen is used in the cooling process, and the continuous quenching of the beryllium bronze strips which are 0.05-1.5mm in thickness and less than 500mm in width is realized by adjusting the running speeds of the strips in a furnace body. With the adoption of the method, the temperatures of the beryllium bronze strips can be controlled accurately, the even heating is realized, the energy consumption is reduced, and meanwhile, the beryllium bronze strips which are 0.05-1.5mm in thickness and less than 500mm in width can be produced easily, and the solution temperature is 240-980+ / -2 DEG C.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metals, in particular to a method for producing beryllium copper strips using a continuous heat treatment furnace. Background technique [0002] Beryllium-copper alloy is a typical precipitation-strengthened alloy. After proper solid solution and aging heat treatment, it can obtain the strength equivalent to that of special steel. At the same time, it has high electrical conductivity, thermal conductivity, high hardness and wear resistance, high creep corrosion performance, good casting performance, non-magnetic and non-sparking electrical conductivity during impact. Therefore, beryllium bronze alloy has excellent properties that cannot be replaced by many other alloys, and is widely used as a conductive spring material. [0003] The quenching process requirements of beryllium bronze alloy are relatively strict: the solid solution heating temperature range is relatively narrow, the temperatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/08C21D9/56
Inventor 赵兵韩俊钢岳丽娟王艳婷吴文博石超韩明达
Owner CNMC NINGXIA ORIENT GRP
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