东莞市长安博扬金属材料有限公司

【李婷3】【-】【：】
Oxygen-free copper, oxygen-free copper strip, oxygen-free copper plate, oxygen-free copper wire, oxygen-free copper price, usage, product specifications and performance and other product information introduction.
Dongguan Boyang Company's spot wholesale: chemical composition of oxygen-free copper, hardness of oxygen-free copper, oxygen-free copper strip, copper alloy, American Comcast oxygen-free copper, Japanese Mitsubishi oxygen-free copper strip, how much oxygen-free copper A ton of money? Stretched oxygen-free copper strip, oxygen-free copper density, oxygen-free copper quotation, what is oxygen-free copper, what is oxygen-free copper, oxygen-free copper price, easy-cut oxygen-free copper rod, high-hardness oxygen-free copper rod , high toughness oxygen-free copper rods, oxygen-free copper materials, commonly used spot specifications of more than 1,000 tons, and reasonable prices.
Advantages of oxygen-free copper: Imported high-quality oxygen-free copper material. The effect after electroplating is exquisite, with beautiful gloss, smoothness, high dimensional accuracy and good drawing and deep drawing properties.
Oxygen-free copper
It is pure copper that does not contain oxygen or any deoxidizer residue. But it actually still contains very trace amounts of oxygen and some impurities. According to the standards, the oxygen content is not greater than .3, the total impurity content is not greater than .3, and the purity of copper is not greater than . According to the oxygen content and impurity content, oxygen-free copper is divided into No. 1 and No. 2 oxygen-free copper. The purity of No. 1 oxygen-free copper reaches .3, the oxygen content is not more than .3, and the total impurity content is not more than .3. The purity of No. 2 oxygen-free copper reaches ., the oxygen content is not more than .3, and the total impurity content is not more than .3. Oxygen-free copper has no hydrogen embrittlement, high electrical conductivity, good processing performance, welding performance, corrosion resistance and low temperature performance. Oxygen-free copper plate and strip is a key material in the vacuum industry. Since electric vacuum devices such as high-power transmitter tubes, magnetrons, traveling wave tubes, vacuum capacitors, vacuum switches, etc., all need to be exposed to high temperatures of
℃. When brazing is performed in a hydrogen atmosphere, a + rrr+ reaction will occur between the hydrogen and the oxygen in the copper. The water vapor generated will cause intergranular cracks in the copper material, causing leakage of vacuum parts. Therefore, the world Each country has specialized regulations for special varieties of oxygen-free copper, and has strict regulations on oxygen content. The oxygen content in my country's No. 0,
, and
oxygen-free coppers are respectively stipulated as
,
,
, and the oxygen content of general copper is specified as
, and the American
standard for electrical vacuum oxygen-free copper specifies
their oxygen contents are
/> and
, in addition, because under high vacuum conditions (-
), the easily evaporated elements in copper will destroy the vacuum environment, so they must be strictly controlled, especially
,
,
,
,
,
and other elements. In order to ensure the high conductivity of oxygen-free copper, the impurity content must be strictly controlled. The national standard for copper content stipulates that the copper content in oxygen-free copper No. 0,
, and
is respectively specified as
,
, and
. The conductivity of oxygen-free copper products Should reach
.