纯紫铜 紫铜带 铜板 紫铜箔 薄铜皮 接地铜带 铜片 铜带 0.01-1mm
Link to the original- 100 — 1999 шт 5000$ per piece.
- 2000 — 50119 шт 4000$ per piece.
- 50120+ шт 3000$ per piece.
Inspection + photo report for $1.5.
We check the goods and take a photo report so you can make sure you get the right product without faults or damage
Delivery from China to Ukraine, Uzbekistan, European and African countries
Payable upon arrival at the warehouse in China
Returns are only possible while the item is in our warehouse in China. Once the goods have been dispatched from China, they cannot be returned
Photo and product description
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紫铜的用途比纯铁广泛得多,每年有50%的铜被电解提纯为纯铜,用于电气工业。这里所说的紫铜,确实要非常纯,含铜达99.95%以上才行,少量的杂质,特别是磷、砷、铝等,会大大降低铜的导电率。铜中含氧(炼铜时容易混入少量氧)对导电率影响很大,用于电气工业的铜一般都必须是无氧铜。另外,铅、锑、铋等杂质会使铜的结晶不能结合在一起,造成热脆,也会影响纯铜的加工。这种纯度很高的纯铜,一般用电解法精制:把不纯铜(即粗铜)作阳极,纯铜作阴极,以硫酸铜溶液为电解液。当电流通过后,阳极上不纯的铜逐渐熔解,纯铜便逐渐沉淀在阴极上。这样精制而得的铜;纯度可达99.99%。 紫铜是比较纯净的一种铜,一般可近似认为是纯铜,导电性、塑性都较好,但强度、硬度较差一些。