大連數(shù)控加工中鋁鑄造通常是用金屬型鑄造，金屬材料鋁及鋁合金具備不錯的流通性和可塑性，但在運用過程中非常容易發(fā)黑，今天就來說一說為什么在大連數(shù)控加工中鋁表層變黑有哪些原因？
1.結(jié)構(gòu)設(shè)計不科學(xué)。鋁合金壓鑄件在清洗或壓檢后處理方式不正確，為鋁合金壓鑄件起霉發(fā)黑塑造了標(biāo)準(zhǔn)，加速了霉變的形成。
2.物流倉儲管理不及時。將鋁合金壓鑄件儲放在倉庫不一樣的高度，其起霉的情況也不一樣。
3.鋁合金的內(nèi)部結(jié)構(gòu)原因。許多鋁合金壓鑄件廠商在壓鑄、機(jī)械加工工序以后，不做其余清洗處理，或是簡單的用水沖沖，沒法做到完全清洗整潔，壓鑄鋁表層殘余有脫模劑、切削液、皂化液等浸蝕物質(zhì)和其余污漬，這種污漬加速了鋁合金壓鑄件長霉點發(fā)黑的速度。
4.鋁合金外部環(huán)境原因。鋁是活潑金屬材料，在一定的溫度和環(huán)境濕度標(biāo)準(zhǔn)下較易氧化發(fā)黑或起霉，它是鋁本身的特性影響的。
5.選擇清洗劑不得當(dāng)。選擇的清洗劑具備強浸蝕，導(dǎo)致壓鑄鋁浸蝕氧化。
Aluminum casting in Dalian CNC machining is usually done using metal molds. Metal materials such as aluminum and aluminum alloys have good flowability and plasticity, but they are very prone to blackening during use. Today, let's talk about why the surface of aluminum turns black in Dalian CNC machining and what are the reasons?
1. The structural design is not scientific. The incorrect treatment of aluminum alloy die-casting parts after cleaning or pressure inspection has set a standard for mold formation and blackening, accelerating the formation of mold.
2. Logistics and warehousing management is not timely. Storing aluminum alloy die-casting parts at different heights in the warehouse results in varying degrees of mold formation.
3. Internal structural reasons of aluminum alloy. Many aluminum alloy die-casting manufacturers do not perform other cleaning treatments after die-casting and mechanical processing, or simply rinse with water, which cannot achieve complete cleaning and cleanliness. There are residual corrosive substances such as release agents, cutting fluids, saponification solutions, and other stains on the surface of the die-casting aluminum, which accelerate the speed of mold growth and blackening of aluminum alloy die-casting parts.
4. External environmental factors of aluminum alloy. Aluminum is a reactive metal material that is prone to oxidation, blackening, or mold formation under certain temperature and humidity standards. It is influenced by the characteristics of aluminum itself.
5. Improper selection of cleaning agents. The selected cleaning agent has strong corrosion resistance, causing corrosion and oxidation of die cast aluminum.
