現在小編為男女老幼演奏一下子產生相應作（zuò）用無縫方管點（diǎn）破壞的材料元素都有怎麽著。鋁合金本人成分對無縫（féng）方管來（lái）說，0、10及F等因素是（shì）使鋁合金具備較好抗點破壞使用性能的重點鋁合金因素。其餘一部（bù）分因素也（yě）或許有準譜兒的實（shí）際效果，K等因（yīn）素則會進一步減少無縫方管的抗點破壞（huài）實際能力。將鋁合金因素對材料耐點破壞性的產生相應作用著名地歸（guī）納於較為有益產生相應作用是決（jué）定的。13、0的產生相應作（zuò）用是革命的。3在固答案中是開卷有益的，但作為為之中非（fēi）金屬相持續析出時則重要，0在固答案中（zhōng）是進行溫馴（xùn）的，當以幹餾物持續析出（chū）時則重要，但稍有著名產生相應作用。
Today, Xiaobian will explain to you the material factors that affect the pitting corrosion of seamless square pipes. For seamless square tubes, elements 0, 10 and F are the main alloying elements which make the alloy have good resistance to pitting corrosion. Other elements may also have some effect, while K and other elements will reduce the pitting corrosion resistance of seamless square tubes. It is affirmative that the effect of alloying elements on the pit corrosion resistance of materials can be summarized briefly in terms of beneficial effects. The effects of 13 and 0 are variable. 3 is beneficial in solid solution, but harmful when precipitated as intermediate metal phase, 0 is harmless in solid solution and harmful when precipitated with carbide, but slightly harmful. (2)對奧氏體無縫方管開展冷進行加工的深入（rù）研究說明，冷進行加工後式樣要樣（yàng）兒的蝕坑數量增長和蝕坑的度量衡（héng）進行家小。這是其主要原因在於冷進行加（jiā）工增添位錯骨（gǔ）密度，位錯（cuò）在要樣兒露麵處比較容易進行造成點破壞坑，冷進行加工有增添點破（pò）壞的發展趨勢。
(2) The research on cold-working of austenitic seamless square tubes shows that the number of pits on the surface of samples increases and the size of pits decreases after cold-working. This is due to the increase of dislocations density in cold processing, dislocations in the surface outcrop is prone to cause pitting corrosion, cold processing has the trend of increasing pitting corrosion.
(3)要樣兒情況（kuàng）對其中一個指定的鋁合金環境（jìng）體係，作出（chū）決定鋁（lǚ）合金點破壞電位的元素雖然（rán）材料要（yào）樣兒的重（chóng）要度。用數據思（sī）考上，對具備有（yǒu）所區別要樣兒重要度的鋁合金開展點（diǎn）破壞進行目標的進行比較是不用重要性的。關（guān）於要樣兒重要度對無縫方管點破壞使用性能產生相應作用狀況如圖所示。它說明，在同樣地的材料環境（jìng）體係中，若（ruò）要樣兒重要度有所區別，其點破壞電（diàn）位的分別可在14上述。
(3) For a given alloy environment system, the factor that determines the pitting corrosion potential of the alloy is the smoothness of the material surface. In fact, it is meaningless to compare the pitting corrosion tendency of alloys with different surface finish. The effect of surface finish on the corrosion resistance of seamless square pipes is shown in the figure. It shows that in the same material environment system, if the surface finish is different, the difference of pitting corrosion potential can be more than 14.
(4)無縫方管（guǎn）在大氣中，因為受到而（ér）逐漸（jiàn）形成的液化（huà）物或（huò）許（xǔ）起義點破壞使用性能有重要產生相應作用。由
(4) The oxide formed by heating in seamless square tubes in air may have a significant impact on the pitting corrosion resistance. from
顯微安排熱鍍鋅（xīn）方管對鋁合金抗點破壞使用性能起重點（diǎn）要實際作用。多種相，如硫化物混合、3鐵（tiě）素體（tǐ）。相、敏化的晶粒邊界還有焊縫等都或許對鋼的（de）抗（kàng）點破壞使用性能具備作出決定性的產生相應作用，它（tā）們都是出現點破壞最臉皮薄的位置。這（zhè）對顯微安排較比較為複雜的進行鍛造無縫方管還有（yǒu）顯微安排對熱采用相應辦法解（jiě）決生產工藝（yì）非常臉皮薄的馬氏臉型無縫方管（guǎn）來說，點破壞與構成相的聯係就更加保持緊密。有必要進行（háng）表明的是，含的合成硫化錳混合（hé）是點破壞更臉皮薄（báo）的位（wèi）置（zhì）。因（yīn）為這個原因（yīn），在冶金無縫方管時，應（yīng）防止使用鋁脫脂劑（jì）。
Microstructure galvanized square tubes play an important role in the pitting corrosion resistance of the alloy. Various phases, such as sulphide inclusions and 3 ferrite. Phases, sensitized grain boundaries and welds may have a decisive impact on the pit corrosion resistance of steel. They are the most sensitive sites for pit corrosion. For the cast seamless square tubes with complex microstructures and martensitic seamless square tubes with sensitive microstructures to heat treatment process, the relationship between pitting corrosion and constituent phases is more close. It should be pointed out that the complex manganese sulfide inclusions are more sensitive to pitting corrosion. Therefore, aluminium deoxidizer should be avoided in the smelting of seamless square tubes.
(5)銲接所形成的液化膜對鋁合金在身強力壯氯（lǜ）化物膠體溶液正當中抗點破（pò）壞使用性（xìng）能（néng）或許是著名的（de）。
(5) The oxide film produced by welding may be detrimental to the pitting corrosion resistance of the alloy in the strong chloride solution.
(6)逐步鈍化采用相應辦法（fǎ）解決的重點實際作用是（shì）進行解散無（wú）縫方管要樣兒的混合物和（hé）汙染物，使之清潔，它還可需要要樣兒的硫（liú）化錳混合，這一類型（xíng）的情況混合或許轉變為點破壞的（de）萌發源、進而使原有狀況變得更好無縫方管的抗點破壞使用性能。有（yǒu）必要進行理會的是，無縫方管在逐步鈍（dùn）化解決後（hòu）投入實際使用氫液化鈉膠體溶液進行除去
(6) The main function of passivation treatment is to dissolve the inclusions and contaminants on the surface of seamless square tubes and make them clean. It can also remove the manganese sulfide inclusions on the surface. Such inclusions may become the origin of pitting corrosion and thus improve the pitting corrosion resistance of seamless square tubes. It should be noted that seamless square tubes are cleaned with sodium hydroxide solution after passivation treatment.
