CN1804075A - Method for manufacturing anti-corrosion alloy brass H65 and copper belt thereof - Google Patents

Abstract

The invention discloses an alloy, in particular discloses a corrosion-resistant alloy brass H65 and a manufacturing method thereof. The corrosion-resistant alloy brass H65 is special in that it consists of the following components by weight percentage: copper: 63.5-68%; trace elements: tin 0.01-0.2% and/or phosphorus 0.01-0.07%; the balance is zinc. The production process of the copper strip includes the following specific steps: alloy design→batching→horizontal continuous casting→face milling→rough rolling→intermediate annealing→finish rolling→shearing and packaging. The invention is mainly used for manufacturing cooling pipes of automobile radiators. The alloy has better corrosion resistance than ordinary brass H65, can avoid polluting fresh water environment, and greatly improves the service life of products.

Description

Corrosion-resistant alloy brass H65 and its copper strip manufacturing method

(1) Technical field

The invention relates to an alloy, in particular to a corrosion-resistant alloy brass H65 and a manufacturing method thereof.

(2) Background technology

At present, brass H65 is composed of 63.5-68% Cu and the rest of zinc, which is an ordinary high-zinc brass. Ordinary high-zinc brass is extremely prone to dezincification corrosion. With the continuous rise of copper prices, the thickness of copper strips is also continuously reduced in order to reduce manufacturing costs, which seriously affects the service life of subsequent products.

(3) Contents of the present invention

In order to make up for the deficiencies of the prior art, the present invention provides a corrosion-resistant alloy brass H65 with better corrosion resistance and improved product service life and a production method thereof.

The present invention is achieved through the following technical solutions:

A corrosion-resistant alloy brass H65, which is special in that it is composed of the following components in weight percentage: copper: 63.5-68%; trace elements: tin 0.01-0.2% and/or phosphorus 0.01-0.07%; the balance for zinc.

In the corrosion-resistant alloy brass H65 of the present invention, the trace element is tin, and the weight percentage is 0.01-0.2%.

In the corrosion-resistant alloy brass H65 of the present invention, the trace element is phosphorus, and the weight percentage is 0.01-0.07%.

In the corrosion-resistant alloy brass H65 of the present invention, the trace elements are 0.01-0.2% of tin and 0.01-0.07% of phosphorus.

The manufacturing method of the corrosion-resistant alloy brass H65 copper strip of the present invention can adopt the following specific steps: alloy design→batching→horizontal continuous casting→face milling→rough rolling→intermediate annealing→finish rolling→shearing and packaging.

The manufacturing method of the corrosion-resistant alloy brass H65 copper strip of the present invention can also adopt the following specific steps: alloy design→batching→semi-continuous casting→hot rolling→face milling→rough rolling→intermediate annealing→finish rolling→shearing, packaging .

The invention improves the corrosion resistance of the alloy by adding trace elements tin and phosphorus on the basis of common brass H65. Tin element and phosphorus element can exist at the same time or alone.

The invention is mainly used for manufacturing cooling pipes of automobile radiators. The alloy has better corrosion resistance than ordinary brass H65, can avoid polluting fresh water environment, and greatly improves the service life of products.

(4) Specific implementation methods

Example 1:

This embodiment is composed of the following components by weight percentage: copper: 63.5%; trace elements: tin 0.01%; the balance is zinc. The process of using it to make copper strips is as follows: First, through alloy design, batching according to the above component ratios, after horizontal continuous casting, a 16mm thick cast slab is produced, then through the milling process, about 13.7mm thick, and then rough rolled (1.3mm thick ), followed by multiple intermediate annealing softening and cold rolling. The annealing process is an annealing temperature of 450-500 ° C, annealing time of 4-5 hours, and then finished rolling, the thickness of the finished product is 0.09mm, and finally cut and packaged to form a finished product.

Example 2:

This embodiment is composed of the following components by weight percentage: copper: 68%; trace element: tin 0.2%; the balance is zinc. The process of using it to make copper strips is as follows: First, through alloy design, batching according to the above component ratios, after horizontal continuous casting, a 16mm thick cast slab is produced, then through the milling process, about 13.7mm thick, and then rough rolled (1.3mm thick ), followed by multiple intermediate annealing softening and cold rolling. The annealing process is an annealing temperature of 450-500 ° C, annealing time of 4-5 hours, and then the finished product is rolled, and the thickness of the finished product is 0.18mm. Finally, it is cut and packaged to form a finished product.

Example 3:

This embodiment is composed of the following components by weight percentage: copper: 63.5%; trace element: phosphorus 0.01%; the balance is zinc. The process of using it to make copper strips is as follows: First, through alloy design, batching according to the above component ratios, after horizontal continuous casting, a 16mm thick cast slab is produced, then through the milling process, about 13.7mm thick, and then rough rolled (1.3mm thick ), followed by multiple intermediate annealing softening and cold rolling. The annealing process is an annealing temperature of 450-500°C, annealing time of 4-5 hours, and then the finished product is rolled, and the thickness of the finished product is 0.14mm. Finally, it is cut and packaged to form a finished product.

Example 4:

This embodiment is composed of the following components by weight percentage: copper: 65%; trace element: phosphorus 0.07%; the balance is zinc. The process of using it to make copper strips is as follows: First, through alloy design, proportioning according to the above component ratios, and semi-continuous casting to produce 180 thick ingots, hot rolling (14.5mm thick), and then milling process, about 13.7mm Thick, then rough rolling (1.3mm thick), followed by multiple intermediate annealing softening and cold rolling, the annealing process is annealing temperature 450-500 ℃, annealing time 4-5 hours, and then finished rolling, the finished product thickness is 0.16mm, Finally, it is cut and packaged to form a finished product.

Example 5:

This embodiment is composed of the following components by weight percentage: copper: 67%; trace elements: tin 0.1% and phosphorus 0.03%; the balance is zinc. The process of using it to make copper strips is as follows: First, through alloy design, proportioning according to the above component ratios, semi-continuous casting to produce 180mm thick ingots, hot rolling (14.5mm thick), and then milling process, about 13.7mm Thick, then rough rolling (1.3mm thick), followed by multiple intermediate annealing softening and cold rolling, the annealing process is annealing temperature 450-500 ° C, annealing time 4-5 hours, and then finished rolling, the finished product thickness is 0.12mm, Finally, it is cut and packaged to form a finished product.

Embodiment 6:

This embodiment is composed of the following components by weight percentage: copper: 68%; trace elements: tin 0.05% and phosphorus 0.07%; the balance is zinc. The process of using it to make copper strips is as follows: First, through alloy design, proportioning according to the above component ratios, semi-continuous casting to produce 180mm thick ingots, hot rolling (14.5mm thick), and then milling process, about 13.7mm Thick, then rough rolling (1.3mm thick), followed by multiple intermediate annealing softening and cold rolling, the annealing process is annealing temperature 450-500 ℃, annealing time 4-5 hours, and then finished rolling, the finished product thickness is 0.09mm, Finally, it is cut and packaged to form a finished product.

Claims (7)

1. A corrosion-resistant alloy brass H65, characterized in that: it consists of the following components by weight percentage: copper: 63.5-68%; trace elements: tin 0.01-0.2% and/or phosphorus 0.01-0.07%; balance for zinc. 2. The corrosion-resistant alloy brass H65 according to claim 1, characterized in that: the trace element is tin, and the weight percentage is 0.01-0.2%. 3. The corrosion-resistant alloy brass H65 according to claim 1, characterized in that: the trace element is phosphorus, and the weight percentage is 0.01-0.07%. 4. The corrosion-resistant alloy brass H65 according to claim 1, characterized in that: said trace elements are 0.01-0.2% tin and 0.01-0.07% phosphorus. 5. The method for manufacturing the corrosion-resistant alloy brass H65 copper strip according to claim 1, characterized in that it comprises the following specific steps: alloy design → batching → horizontal continuous casting → face milling → rough rolling → intermediate annealing → finish rolling → Cutting, packaging. 6. The method for manufacturing the corrosion-resistant alloy brass H65 copper strip according to claim 1, characterized in that it comprises the following specific steps: alloy design→batching→semi-continuous casting→hot rolling→face milling→rough rolling→intermediate annealing →finish rolling→cutting and packaging. 7. The method for manufacturing the corrosion-resistant alloy brass H65 copper strip according to claim 5 or 6, characterized in that: in the step of intermediate annealing, multiple intermediate annealings are used to soften, and the annealing process is 450-500 ° C × 4 ~5 hours.