The corrosion of hot-dip galvanized cable tray in Shandong exists. Under certain environmental conditions, hot-dip galvanized cable tray will also cause corrosion. Why is it corroded? What caused it?

電纜橋架熱鍍鋅橋架如高壓減壓閥中的閥瓣(頭)和閥座、離心泵的葉輪、風(fēng)機中的葉片等，由鍍鋅橋架磨損和腐蝕聯(lián)合作用而產(chǎn)生的資料破壞過程叫磨損腐蝕。磨損腐蝕可發(fā)生在高速流動的流體管道及載有懸浮摩擦顆粒流體的泵、管道等處。

Shandong cable tray hot-dip galvanized cable tray, such as valve disc (head) and valve seat in high-pressure pressure reducing valve, impeller of centrifugal pump, blade in fan, etc. the data destruction process caused by the combined action of wear and corrosion of galvanized cable tray is called wear and corrosion. Wear corrosion can occur in high-speed fluid pipelines and pumps and pipelines containing suspended friction particles.

有的過流部件。這些部位腐蝕介質(zhì)的相對流動速度很高，使鈍化型耐蝕金屬資料外表的鈍化膜，因受到過分的機械沖刷作用而不易恢復(fù)，腐蝕率會明顯加劇，如果腐蝕介質(zhì)中存在著固相顆粒，會大大加劇磨損腐蝕.稱為腐蝕疲勞。疲勞破壞的應(yīng)力值低于屈服點，腐蝕疲勞是腐蝕介質(zhì)與循環(huán)應(yīng)力的聯(lián)合作用下產(chǎn)生的這種由于腐蝕介質(zhì)而引起的抗腐蝕疲勞性能的降低。

Some overcurrent components. The corrosion rate of the passivation medium is relatively high, and the corrosion resistance of the passivation medium will be greatly increased due to the excessive erosion of the solid medium It is called corrosion fatigue. The stress value of fatigue failure is lower than the yield point. Corrosion fatigue is caused by the combined action of corrosive medium and cyclic stress, which reduces the anti-corrosion fatigue performance caused by corrosive medium.

一定的臨界循環(huán)應(yīng)力值(疲勞或稱疲勞壽命)以上時，才會發(fā)生疲勞破壞。而腐蝕疲勞卻可能在很低的應(yīng)力條件下就發(fā)生破斷，因而它很危險的。都會使腐蝕疲勞強度下降。熱鍍鋅橋架廠家資料外表的損傷或較低的粗糙度所產(chǎn)生的應(yīng)力集中，影響資料腐蝕疲勞的因素主要有應(yīng)力交變速度、介質(zhì)溫度、介質(zhì)成分、資料尺寸、加工和熱處理等。

Fatigue failure occurs only when a certain critical cyclic stress value (fatigue or fatigue life) is above. However, corrosion fatigue may break under very low stress conditions, so it is very dangerous. Will reduce the corrosion fatigue strength. The stress concentration caused by the damage or low roughness of the data surface of the hot-dip galvanized bridge manufacturer. The factors affecting the data corrosion fatigue mainly include stress alternating speed, medium temperature, medium composition, data size, processing and heat treatment.

增加載荷循環(huán)速度、降低介質(zhì)的PH值或升高介質(zhì)的溫度。會使疲勞下降，從而也會降低疲勞強度.沿著資料的晶粒間界受到腐蝕，晶間腐蝕是金屬資料在特定的腐蝕介質(zhì)中。使晶粒之間喪失結(jié)合力的一種局部腐蝕破壞現(xiàn)象。受這種腐蝕的設(shè)備或零件，有時從外表看仍是完好光亮，但由于晶

Increase the load cycle speed, reduce the pH value of the medium or increase the temperature of the medium. It will reduce fatigue and thus reduce fatigue strength Intergranular corrosion refers to the corrosion of metal materials in a specific corrosion medium. A local corrosion failure phenomenon that causes the loss of bonding force between grains. Sometimes the equipment or parts subject to this corrosion are still intact and bright from the appearance, but it is caused by Yu Jing

幾乎喪失了強度，粒之間的結(jié)合力被破壞。嚴重者會失去金屬聲音，輕輕敲擊便成為粉末.據(jù)統(tǒng)計，石油、化工設(shè)備腐蝕失效事故中，晶間腐蝕約占4%9%主要發(fā)生在用軋材焊接的容器及熱交換器上。

The strength is almost lost and the bonding force between particles is destroyed. In severe cases, the metal sound will be lost, and it will become powder when knocked gently According to statistics, intergranular corrosion accounts for about 4% and 9% of the corrosion failure accidents of petroleum and chemical equipment, mainly on vessels and heat exchangers welded with rolled materials.

一般認為，晶界合金元素的貧化是發(fā)生晶間腐蝕的主要原因。山東電纜橋架熱鍍鋅橋架廠家通過提高資料的純度，去除碳、氮、磷和硅等有害微量元素或加入少量穩(wěn)定化元素(鈦、鈮)以控制晶界上析出的碳化物及采用適當?shù)臒崽幹弥贫群瓦m當?shù)募庸すに嚕煞乐咕чg腐蝕的發(fā)生.應(yīng)以抗均勻腐蝕作為主要的耐蝕性能依據(jù)，均勻腐蝕是指在與環(huán)境接觸的整個金屬外表上幾乎以相同速度進行的腐蝕。

It is generally believed that the dilution of alloying elements at grain boundaries is the main reason for intergranular corrosion. By improving the purity of data, removing harmful trace elements such as carbon, nitrogen, phosphorus and silicon, or adding a small amount of stabilizing elements (titanium and niobium) to control the carbide precipitated on the grain boundary, and adopting appropriate heat treatment system and appropriate processing technology, Shandong cable tray hot-dip galvanized cable tray manufacturers can prevent the occurrence of intergranular corrosion Uniform corrosion resistance should be taken as the main basis for corrosion resistance. Uniform corrosion refers to the corrosion carried out at almost the same speed on the whole metal surface in contact with the environment.