Now stainless steel sculpture plays a vital role in urban construction, and because it is often placed outdoors, it is inevitable that there will be some damage. The following small series will share with you the damage of outdoor stainless steel sculpture.

一、焊接引弧斑痕：焊工在金屬表面引弧時，會造成表面粗糙缺陷。保護膜受損，留下潛在的腐蝕源。焊工應(yīng)在已經(jīng)焊好的焊道上或在焊縫接頭的側(cè)邊引弧。然后將引弧痕跡熔入焊縫中。

1、 Welding arc striking mark: when the welder starts arc on the metal surface, it will cause rough surface defects. The protective film is damaged, leaving a potential corrosion source. The welder shall start the arc on the welded bead or on the side of the weld joint. The arc striking trace is then fused into the weld.

二、銹斑：制作前或制作過程中有時會看到不銹鋼產(chǎn)品或設(shè)備上生銹，這說明表面受到嚴重污染。設(shè)備投入使用前必須把銹掉，徹 底清理過的表面應(yīng)通過鐵試驗和/或水試驗進行檢驗。

2、 Rust spot: rust on stainless steel products or equipment can be seen before or during production, which indicates that the surface is seriously polluted. The rust must be removed before the equipment is put into use, and the thoroughly cleaned surface shall be inspected by iron test and / or water test.

三、焊接缺陷：焊接缺陷如：咬邊、未焊透、密集氣孔和裂紋不僅降低接頭的牢固性，而且還會成為縫隙腐蝕的腐蝕源。改善這種結(jié)果進行清理操作時，它們還會夾帶固體顆粒。這些缺陷可通過重新焊接或修磨后重焊進行修補。

3、 Welding defects: welding defects such as undercut, incomplete penetration, dense pores and cracks not only reduce the firmness of the joint, but also become the corrosion source of crevice corrosion. To improve this result, they can also carry solid particles during cleaning operations. These defects can be repaired by re welding or re welding after grinding.

四、劃痕：為了防止工藝潤滑劑或生成物和/或污物積留，必須對劃痕和其它粗糙表面進行機械清理（如干噴砂，磨料用玻璃珠）。

4、 Scratches: in order to prevent the accumulation of process lubricants or products and / or dirt, scratches and other rough surfaces must be mechanically cleaned (e.g. dry sandblasting, glass beads for abrasives).
              

五、油和油脂：有機物質(zhì)如：油，油脂甚指印都會成為局部腐蝕的腐蝕源。由于這些物質(zhì)能起屏障作用，它們會影響化學和電化學清理效果，因而必須 徹底清理掉。

5、 Oil and grease: organic substances such as oil, grease and even fingerprints can become the source of localized corrosion. Because these substances can act as a barrier, they will affect the chemical and electrochemical cleaning effect, so they must be thoroughly removed.

六、油漆、粉筆和標記筆印：這些污染物的影響與油和油脂的影響相似。建議用干凈的刷子和干凈的水或堿性清洗劑進行洗滌，也可以使用高壓水或蒸汽沖洗。

6、 Paint, chalk and marker marks: the effects of these contaminants are similar to those of oil and grease. It is recommended to wash with a clean brush and clean water or alkaline detergent, or wash with high-pressure water or steam.

七、焊劑：利用焊劑進行焊接的工藝有手工焊，帶焊劑芯電弧焊和埋弧焊，這些焊接工藝都會在表面留下細小的焊劑顆粒，普通的清理方法無法將它們掉。這此顆粒將是縫隙腐蝕的腐蝕源，必 須采用機械清理方法去除這些殘留焊劑。

7、 Flux: the welding processes using flux include manual welding, flux cored arc welding and submerged arc welding. These welding processes will leave fine flux particles on the surface, which cannot be removed by ordinary cleaning methods. The particles will be the corrosion source of crevice corrosion, and the residual flux must be removed by mechanical cleaning.

八、熱回火色和其它氧化層：熱回火色是由于在高溫或長時間在較高度下停留所致。當出現(xiàn)任何一種這類氧化層時，金屬表面的鉻含量都會降低，造成這些區(qū)域的耐腐蝕性降低。在這種情況下，不僅要熱回火色和其它氧化層，還應(yīng)對它們下面的貧鉻金屬層進行清理。

8、 Heat recovery color and other oxide layers: heat recovery color is caused by staying at high temperature or for a long time at a higher height. When any of these oxide layers appear, the chromium content on the metal surface will be reduced, resulting in the corrosion resistance of these areas. In this case, not only should the heat recovery color and other oxide layers be eliminated, but also the chromium poor metal layer under them should be cleaned.

九、粉塵：制作經(jīng)常是在有粉塵的場地進行，空氣中常帶有許多粉塵，它們不斷地落在設(shè)備表面。它們可以用水或堿性溶液去除掉。不過，有附著力的塵垢需要高壓水或蒸氣進行清理。

9、 Dust: the production is often carried out in the site with dust. There are many dust in the air, which constantly fall on the surface of the equipment. They can be removed with water or alkaline solutions. However, dust with adhesion needs to be cleaned by high pressure water or steam.

十、殘余粘合劑：撕掉膠帶和保護紙時，粘合劑總有一部分殘留在不銹鋼表面。如果粘全劑還沒硬，可以用有機熔劑去除。但是，當曝露在光或空氣中時，粘全劑變硬，形成縫隙腐蝕的腐蝕源。然后需要用細磨料進行機械清理。

10、 Residual adhesive: when the adhesive tape and protective paper are torn off, part of the adhesive will remain on the stainless steel surface. If the adhesive is not hard, it can be removed with organic flux. However, when exposed to light or air, the adhesive hardens and forms the corrosion source of crevice corrosion. Mechanical cleaning with fine abrasive is then required.

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