Brass alloy rod using silicon and aluminum elements to inhibit lead release and preparation method thereof

Abstract

The invention relates to a brass alloy rod using silicon and aluminum elements to inhibit lead release, which comprises the following components in percentage by weight: 60-65% of copper, 4-7% of silicon, 4-8% of aluminum and the balance of zinc. On the basis that the machining quality and the wear-resistant and anti-friction property of the original lead-containing tin bronze are kept, the brass alloy rod using silicon and aluminum elements to inhibit lead release avoids the addition of lead and inhibits lead release by adding the silicon and aluminum elements, and the lead release content is controlled to be 0.01 mg / L or below. The principle is as follows: the added silicon and aluminum elements form dispersedly distributed independent phases in the copper alloy, and the phases have the effect of chip breaking in the machining process, thereby improving the machining quality of brass.

Description

technical field

[0001] The invention relates to the field of alloy rods, in particular to a brass alloy rod using silicon and aluminum elements to suppress lead dissolution, and a preparation method of the alloy rod. Background technique

[0002] The reason why the lead-containing copper alloy has good cutting performance and anti-friction and wear resistance is mainly because lead exists in a single item in the copper alloy, which plays a good role in breaking chips during cutting; in the friction and wear environment, due to the lead shearing The shear strength is very low, and the lead on the surface of copper alloy parts makes the coefficient of friction of leaded copper alloys relatively low. Therefore, lead element is more commonly used in brass alloys. However, because it contains lead, it is easy to cause hot embrittlement during hot processing, so it can only be processed in a cold state, which is difficult to process and leads to high cost. And along with the gra...

Examples

Embodiment 1

[0021] A brass alloy rod using silicon-aluminum elements to suppress lead dissolution, comprising the following components in weight percentages: 60%-65% copper, 4%-7% silicon, 4-8% aluminum, and the balance zinc. The preparation method is as follows: according to the above ratio, put each component in a power frequency electric furnace, heat it to 1150-1220 degrees and completely melt it, then keep it warm to 1100-1150 degrees; use a graphite rod to fully stir the completely melted alloy liquid , covered with high-purity flaky graphite powder to prevent its oxidation, the thickness is about 10-15cm; after the holding time of 1-2h, use the German imported Spike direct reading spectrometer to test the sample taken out of the furnace 3-6 times Sub-component inspection to ensure that the alloy composition is within the specified range; after further heat preservation for 50-60 minutes, the temperature is raised to 1200 degrees again, and the vibration device of the power frequency...

Embodiment 2

[0024] A brass alloy rod using silicon and aluminum elements to suppress the dissolution of lead is composed of the following components in weight percentage: 62.3% copper, 5.4% silicon, 6.2% aluminum, and the balance zinc. The preparation method is as follows: according to the above ratio, put each component in a power frequency electric furnace, heat it to 1150-1220 degrees and completely melt it, then keep it warm to 1100-1150 degrees; use a graphite rod to fully stir the completely melted alloy liquid , covered with high-purity flaky graphite powder to prevent its oxidation, the thickness is about 10-15cm; after the holding time of 1-2h, use the German imported Spike direct reading spectrometer to test the sample taken out of the furnace 3-6 times Sub-component inspection to ensure that the alloy composition is within the specified range; after further heat preservation for 50-60 minutes, the temperature is raised to 1200 degrees again, and the vibration device of the power...

Embodiment 3

[0027] A brass alloy rod using silicon-aluminum elements to suppress lead dissolution, consisting of the following components in weight percentages: 60%-65% copper, 4%-7% silicon, 4-8% aluminum, 1-3% iron, Balance Zinc. The preparation method is as follows: put each component in a power frequency electric furnace according to the above ratio, heat it to 1150-1220 degrees and completely melt it, then keep it warm to 1100-1150 degrees; stir the completely melted alloy liquid with a graphite rod , covered with high-purity flaky graphite powder to prevent its oxidation, the thickness is about 10-15cm; after the holding time of 1-2h, use the German imported Spike direct reading spectrometer to test the sample taken out of the furnace 3-6 times Sub-component inspection to ensure that the alloy composition is within the specified range; after further heat preservation for 50-60 minutes, the temperature is raised to 1200 degrees again, and the vibration device of the power frequency e...

technical field

[0001] The invention relates to the field of alloy rods, in particular to a brass alloy rod using silicon and aluminum elements to suppress lead dissolution, and a preparation method of the alloy rod. Background technique

[0002] The reason why the lead-containing copper alloy has good cutting performance and anti-friction and wear resistance is mainly because lead exists in a single item in the copper alloy, which plays a good role in breaking chips during cutting; in the friction and wear environment, due to the lead shearing The shear strength is very low, and the lead on the surface of copper alloy parts makes the coefficient of friction of leaded copper alloys relatively low. Therefore, lead element is more commonly used in brass alloys. However, because it contains lead, it is easy to cause hot embrittlement during hot processing, so it can only be processed in a cold state, which is difficult to process and leads to high cost. And along with the gra...

Examples

Embodiment 1

[0021] A brass alloy rod using silicon-aluminum elements to suppress lead dissolution, comprising the following components in weight percentages: 60%-65% copper, 4%-7% silicon, 4-8% aluminum, and the balance zinc. The preparation method is as follows: according to the above ratio, put each component in a power frequency electric furnace, heat it to 1150-1220 degrees and completely melt it, then keep it warm to 1100-1150 degrees; use a graphite rod to fully stir the completely melted alloy liquid , covered with high-purity flaky graphite powder to prevent its oxidation, the thickness is about 10-15cm; after the holding time of 1-2h, use the German imported Spike direct reading spectrometer to test the sample taken out of the furnace 3-6 times Sub-component inspection to ensure that the alloy composition is within the specified range; after further heat preservation for 50-60 minutes, the temperature is raised to 1200 degrees again, and the vibration device of the power frequency...

Embodiment 2

[0024] A brass alloy rod using silicon and aluminum elements to suppress the dissolution of lead is composed of the following components in weight percentage: 62.3% copper, 5.4% silicon, 6.2% aluminum, and the balance zinc. The preparation method is as follows: according to the above ratio, put each component in a power frequency electric furnace, heat it to 1150-1220 degrees and completely melt it, then keep it warm to 1100-1150 degrees; use a graphite rod to fully stir the completely melted alloy liquid , covered with high-purity flaky graphite powder to prevent its oxidation, the thickness is about 10-15cm; after the holding time of 1-2h, use the German imported Spike direct reading spectrometer to test the sample taken out of the furnace 3-6 times Sub-component inspection to ensure that the alloy composition is within the specified range; after further heat preservation for 50-60 minutes, the temperature is raised to 1200 degrees again, and the vibration device of the power...

Embodiment 3

[0027] A brass alloy rod using silicon-aluminum elements to suppress lead dissolution, consisting of the following components in weight percentages: 60%-65% copper, 4%-7% silicon, 4-8% aluminum, 1-3% iron, Balance Zinc. The preparation method is as follows: put each component in a power frequency electric furnace according to the above ratio, heat it to 1150-1220 degrees and completely melt it, then keep it warm to 1100-1150 degrees; stir the completely melted alloy liquid with a graphite rod , covered with high-purity flaky graphite powder to prevent its oxidation, the thickness is about 10-15cm; after the holding time of 1-2h, use the German imported Spike direct reading spectrometer to test the sample taken out of the furnace 3-6 times Sub-component inspection to ensure that the alloy composition is within the specified range; after further heat preservation for 50-60 minutes, the temperature is raised to 1200 degrees again, and the vibration device of the power frequency e...

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