There are many kinds of door frames. Stainless steel door pocket has gorgeous and bright visual and decorative performance, creating a luxurious atmosphere, which is not only beautiful, but also rich in color; It is also easy to scrub, so the damage to the door can also be reduced. Now this is the choice of many families. How should we clean and maintain the stainless steel door pocket? Next, Xiaobian will share some deep cleaning methods with you, hoping to help you.

1、銹斑

1. Rust spot

不銹鋼門產品或設備在生產前或生產過程中有時會生銹，表明表面污染嚴重。設備投入使用前，一定除銹，完全清理干凈的表面應進行鐵試驗和水試驗。

Stainless steel door products or equipment sometimes rust before or during production, indicating serious surface pollution. Before the equipment is put into use, the rust must be removed, and the completely cleaned surface should be subjected to iron test and water test.

2、粉塵

2. Dust

生產通常在多塵的場所進行。空氣中經常有大量灰塵，這些灰塵不斷落在設備表面。它們可以用水或堿性溶液去除。然而，粘性灰塵需要用高壓水或蒸汽清洗。

Production is usually carried out in dusty places. There is often a lot of dust in the air, which constantly falls on the surface of the equipment. They can be removed with water or alkaline solution. However, sticky dust needs to be cleaned with high-pressure water or steam.

3、浮鐵粉或嵌鐵

3. Floating iron powder or embedded iron

在許多表面，游離鐵會生銹和腐蝕不銹鋼門。因此，需要將其移除。漂浮的粉末通常可以與灰塵一起清除。有些具有很強的附著力，需要作為預埋鐵處理。除灰塵外，還有許多表面鐵的來源，包括用普通碳鋼鋼絲刷清潔的非不銹鋼門產品，用砂、玻璃珠或其他以前用于普通碳鋼、低合金鋼或鑄鐵件的磨料進行噴丸處理，或在不銹鋼門組件和設備上研磨。如果不銹鋼門在下料或吊裝過程中未加以保護，則工作臺上的鋼絲繩、吊具和鐵容易嵌入或污染表面。

On many surfaces, free iron will rust and corrode stainless steel doors. Therefore, it needs to be removed. Floating powder can usually be removed together with dust. Some have strong adhesion and need to be treated as embedded iron. In addition to dust, there are many sources of surface iron, including non stainless steel door products cleaned with ordinary carbon steel wire brush, shot blasting with sand, glass beads or other abrasives previously used for ordinary carbon steel, low alloy steel or iron castings, or grinding on stainless steel door components and equipment. If the stainless steel door is not protected during blanking or hoisting, the steel wire rope, lifting appliance and iron on the workbench are easy to be embedded or pollute the surface.

4、劃痕

4. Scratch

為防止工藝油或產品和/或污垢的積聚，需要對劃痕和其他粗糙表面進行機械清潔。

To prevent the accumulation of process oil or products and / or dirt, mechanical cleaning of scratches and other rough surfaces is required.

5、熱回收色等氧化層

5. Oxide layer such as heat recovery color

如果不銹鋼門在焊接或打磨過程中在空氣中加熱到一定的高溫，則焊縫兩側、焊縫下表面和焊縫底部都會出現氧化鉻熱回收色。與氧化保護膜相比，熱回收顏色更薄，更明顯。顏色取決于厚度，可以在彩虹、藍色、紫色到淺黃色和棕色中看到。較厚的氧化物通常為黑色。這是由于長時間停留在高溫或更高海拔造成的。當該氧化層出現時，金屬表面的鉻含量將降低，導致這些區域的耐蝕性降低。在這種情況下，不僅應去除熱回收顏色和其他氧化層，還應清潔其下方的貧鉻金屬層。

If the stainless steel door is heated to a certain high temperature in the air during welding or grinding, chrome oxide heat recovery color will appear on both sides of the weld, the lower surface of the weld and the bottom of the weld. Compared with oxidation protective film, the color of heat recovery is thinner and more obvious. The color depends on the thickness and can be seen in rainbow, blue, purple to light yellow and brown. Thicker oxides are usually black. This is caused by staying at high temperature or higher altitude for a long time. When the oxide layer appears, the chromium content on the metal surface will be reduced, resulting in the reduction of corrosion resistance in these areas. In this case, not only should the heat recovery color and other oxide layers be removed, but also the chromium poor metal layer below them should be cleaned.

6、粗磨加工

6. Rough grinding

磨削和機加工會導致表面粗糙，留下凹槽、重疊和毛刺等缺陷。每個缺陷也可能會將金屬表面損壞到一定深度，因此不可能通過酸洗、電解拋光或噴丸清理受損的金屬表面。粗糙表面可能是腐蝕和沉積產物的來源。在重新焊接之前，不允許使用粗磨清理焊接缺陷或去除多余的焊接鋼筋。在后一種情況下，應使用細磨料研磨。

Grinding and machining can lead to rough surfaces, leaving defects such as grooves, overlaps, and burrs. Each defect may also damage the metal surface to a certain depth, so it is impossible to clean the damaged metal surface by pickling, electropolishing or shot peening. Rough surfaces may be the source of corrosion and deposition products. Before re welding, it is not allowed to use rough grinding to clean up welding defects or remove excess welding reinforcement. In the latter case, fine abrasive grinding should be used.

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