Oxygen-free copper tube and machining method thereof
A technology of oxygen-free copper pipe and processing method, which is applied in the field of materials and processing, can solve the problems of oxygen-free copper conductivity drop, hydrogen embrittlement, etc., and achieve the effects of good high-temperature mechanical properties, good corrosion resistance, and high conductivity
Active Publication Date: 2012-11-21
济南宝世达实业发展有限公司
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Problems solved by technology
The processing technology of oxygen-free copper has two kinds of deoxidation with phosphorus and deoxidation without phosphorus. When the traditional process of deoxidation with phosphorus is used, the oxygen-free copper tube contains a small amount of phosphorus. Under the action of phosphorus, the conductivity of oxygen-free copper decreases. , hydrogen embrittlement is serious
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[0016] The present invention will be described in detail below with reference to the accompanying drawings. The oxygen-free copper tube is realized by means of phosphorus-containing deoxidation, and better overcomes the shortcomings of the decrease of the conductivity of the copper tube and the serious hydrogen embrittlement phenomenon in the previous phosphorus-containing deoxidation process. The material ratio of the oxygen-free copper tube is: Ag, Bi, P, Pb, the balance is Cu, and the weight percentage of the elements contained is: Ag≤0.015%, Bi≤0.0005%, P: 0.001-0.006%, Pb ≤0.005%, impurities ≤0.03%.
[0017] The oxygen-free copper tube processing method is carried out according to the following steps:
[0018] 1) According to the requirements, design the shape and size of the oxygen-free copper pipe;
[0019] 2) The electrolytic copper is added to the semi-continuous smelting furnace for smelting, and Ag, Bi, P, and Pb are added to it, and its content is adjusted within...
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Abstract
The invention discloses an oxygen-free copper tube and a machining method thereof. The adopted technical scheme is that: the oxygen-free copper tube is characterized by comprising less than or equal to 0.015 percent of Ag, less than or equal to 0.0005 percent of Bi, 0.001-0.006 percent of P, less than or equal to 0.005 percent of Pb, less than or equal to 0.03 percent of impurities and the balance of copper in percentage by weight. The oxygen-free copper tube has the advantages that: (1) the oxygen-free copper tube deoxidized by phosphorus has good high-temperature mechanical property, high electric conductivity, good mechanical property, welding property, corrosion resisting property and low-temperature property and has the tensile strength of the oxygen-free copper tube up to 300MPa, the minimum conductivity of 57MS / m and the minimum elongation at break of 15 percent; (2) the oxygen content of the oxygen-free copper tube deoxidized by phosphorus can be adjusted by using the volatility of phosphorus, so that the hydrogen embrittlement can reach the first level; and (3) the oxygen-free copper tube deoxidized by phosphorus has a simple machining process and is easy to realize.
Description
technical field [0001] The invention relates to a material and a processing method thereof, in particular to an oxygen-free copper tube used for phosphorus deoxidation by a steam turbine generator and a processing method thereof. Background technique [0002] Oxygen-free copper is pure copper that does not contain oxygen or any deoxidizer residue, but in fact still contains a very small amount of copper and some impurities, wherein the content of oxygen is not more than 0.003%, and the total content of impurities is not more than 0.05%. The processing technology of oxygen-free copper includes phosphorus deoxidation and phosphorus-free deoxidation. When the traditional process of phosphorus deoxidation is used, the oxygen-free copper tube contains a small amount of phosphorus. Under the action of phosphorus, the conductivity of oxygen-free copper decreases. , the hydrogen embrittlement phenomenon is serious. SUMMARY OF THE INVENTION [0003] The object of the present inven...
Claims
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IPC IPC(8): C22C9/00C22C1/02B21C1/22
Inventor 尚兴军孙福学韩波王振韩道玉曹爱华
Owner 济南宝世达实业发展有限公司