铝排“寿命”的原来与制作工艺有关?_新闻资讯

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铝排“寿命”的原来与制作工艺有关?

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纯铝很软强度不大,有良好的延展性,可拉成细丝和轧成箔片,因此成为制作冷库铝排的最佳选择。铝的表面处理工艺有很多种,其中在铝排产品上应用得最多的主要是:酸洗、喷砂、碱蚀、酸砂等工艺。其中喷砂属于物理方法工艺,其他则属于化学方法工艺。
Pure aluminum is very soft, and has good ductility. It can be drawn into thin wires and rolled into foil. Therefore, pure aluminum is the best choice for making cold storage aluminum platoon. There are many kinds of surface treatment technology for aluminum. Among them, the most commonly used products are acid washing, sandblasting, caustic corrosion, acid sand and so on. Sandblasting is a physical process, while others belong to chemical process.
酸洗工艺是利用酸溶液去除金属表面上的氧化皮和锈蚀物的方法。采用酸洗耗费时间长,导致加工成本居高不下。对厚氧化皮效果不理想,特别是焊接处黑渣基本上除不掉。而且其耐蚀性很难达到ISO国家标准,因为其有氟化铝附着在铝排表面,且氧化后的氧化孔比较大,容易出现表面处理不均匀情况。
Acid pickling is the way to remove oxide scale and rust from metal surface by acid solution. Acid washing takes a long time, resulting in high processing cost. The effect of thick oxide scale is not ideal, especially the black slag at the welding site can not be eliminated. And its corrosion resistance is difficult to reach the national standard of ISO, because its aluminum fluoride is attached to the surface of aluminum, and the oxidation hole after oxidation is relatively large, and it is easy to appear uneven surface treatment.
因此采用这种工艺生产的铝排表面不整洁,气密性差,容易产生自然泄漏隐患,如果产生泄漏问题就会大大缩短铝排的使用寿命,从而给冷库带来更多的成本负担。
Therefore, the surface of the aluminum row produced by this process is not neat, the air tightness is poor, and it is easy to produce the hidden danger of natural leakage. If the leakage problem is produced, the service life of the aluminum platoon will be shortened greatly, thus more cost burden will be brought to the cold storage.
喷砂工艺是采用压缩空气为动力,以形成高速喷射束将喷料(铜矿砂、石英砂、金刚砂、铁砂、海南砂)高速喷射到需要处理的工件表面,使工件表面的外表面的外表或形状发生变。喷砂处理由于不能对角落及转折处均匀处理,因此这种工艺使用在铝排上也有缺陷。
The sand blasting technology uses compressed air as the motive force to form high speed jet beam (copper ore, quartz sand, Jin Gang sand, iron sand, Hainan sand) to the surface of the workpiece to be treated, so that the exterior surface or shape of the surface of the workpiece is changed. Because sandblasting is not able to deal with corners and turning points evenly, the technology is also defective in aluminum fabrication.

铝板生产厂家
碱蚀工艺是对铝材品质要求高,只能适用于纯铝锭。由于碱蚀工艺要求高如果碱蚀不好则会造成铝材表面出现长条坑纹、斑点等。如果生产者采用的是再生铝再加上这种工艺,生产出来的铝排则会产生很多有害物质,直接产生健康隐患。
Alkali etching process is high quality requirement for aluminum material, and it can only be applied to pure aluminum ingot. Due to the high requirement of alkali etching process, if the alkali corrosion is not good, it will cause long surface pit and spot on the surface of aluminum. If the producer uses recycled aluminum plus this technology, the aluminum row produced will produce a lot of harmful substances, which will directly cause health risks.
在酸砂工艺的介绍上,铝是电负性很强的金属,对氧原子有着很强的亲和力,铝在空气中会生成一层薄而致密的氧化膜,这层氧化膜具有一定的保护作用。但是这层保护膜在自然环境中生成需要的时间长达48天以上,而且不均匀,因此自然环境下出来的铝排防腐性和气密性不佳,容易导致制冷剂泄漏。而酸砂工艺则是让铝的每在很短的时间内均匀的生成8—12丝的氧化膜,对铝排起到保护作用。
In the introduction of acid sand technology, aluminum is a very electronegative metal, which has a strong affinity for oxygen atoms. Aluminum will produce a thin and dense layer of oxide film in the air. This layer of oxide film has a certain protective effect. However, this protective film will take more than 48 days in the natural environment, and it is not uniform. Therefore, the anticorrosion and air tightness of the aluminum platoon under natural environment is not good, which can easily lead to the leakage of refrigerant. The technology of acid sand is to make the aluminum oxide produce 8 to 12 wire oxide film evenly in a very short time, and play a protective role for aluminum row.
由于这种氧化膜的电导率非常低,因此能够阻止阴极反应,使铝不发生腐蚀。采用这种工艺生产的铝排产品防腐层厚度均匀,化学性质稳定,能够有效的减少制冷剂泄漏问题,因此,在一定程度上,采用这种工艺生产的铝排产品使用寿命会远远长于其他工艺产品。
Because the conductivity of the oxide film is very low, it can prevent the cathode reaction and make the aluminum do not corrode. The anticorrosion layer produced by this process is uniform in thickness and stable in chemical properties, and can effectively reduce the problem of refrigerant leakage. Therefore, to a certain extent, the service life of the aluminum production product produced by this process will be far longer than that of other process products.

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