今天山东无缝钢管厂来给大家简单介绍一下无缝管表面损伤和夹带外来物的清洗方法。

  Today to give you a brief introduction of shandong seamless tube mill of seamless tube surface damage and entrained foreign cleaning method.

  1、粉尘

  1, dust

  制作经常是在有粉尘的场地进行，空气中常带有许多粉尘，它们不断地落在设备表面。它们可以用水或碱性溶液去除掉。不过，有附着力的尘垢需要高压水或蒸气进行清理。

  Production is often with the help of dust venue, often with a lot of dust in air, they constantly fall on the surface equipment.They can use water to get rid of or alkaline solution.However, there is adhesion of dirt need high pressure water or steam to clean up.

  2、浮铁粉或嵌入的铁

  2, iron powder or embedded iron

  在任何表面上，游离铁都会生锈并使不锈钢产生腐蚀。因此，必须清除。浮粉一般可随粉尘一起清除掉。有些粘着力很强，必须按嵌入的铁处理。除粉尘外，表面铁的来源很多，其中包括用普通碳钢钢丝刷清理和用以前在普碳钢，低合金钢或铸铁件上使用过的砂子、玻璃珠或其它磨料进行喷丸处理，或在不锈钢部件及设备附近对前面提到的非不锈钢制品进行修磨。在下料或吊过过程中如果不对不锈钢采取保护措施，钢丝绳、吊具和工作台面上的铁很容易嵌入或玷污表面。

  On any surface, free iron will rust and corrosion of stainless steel.Therefore, must be removed.Float pink usually can be removed with dust.Some adhesion strong, must according to the embedded iron processing.In addition to the dust, the source of the surface of iron, including using ordinary carbon steel wire brush to clean up and used in carbon steel, low alloy steel or cast iron pieces of the used sand, glass beads or other abrasive shot peening treatment, or in the vicinity of stainless steel parts and equipment of the previously mentioned the grinding stainless steel products.Next or hanging if wrong in the process of stainless steel material to take protective measures, on the surface of the steel wire rope, sling and workbench iron embedded or polluted surface easily.

  订货要求和制作后检查可以防止并发现游离铁的存在，ASTM标准A380[3]规定了检查不锈钢表面铁或钢微粒的铁锈试验法。当要求绝对不能有铁存在的时候，应该使用这种检验方法。如果结果令人满意，应用干净的纯水或硝酸对表面进行洗涤，直到深蓝色完全消失。

  Order and production after check can prevent and found that the existence of free iron, ASTM standards A380 [3] the examination stainless steel rust test method of particles on the surface of iron or steel.When iron requirements must not exist, you should use this method of inspection.If the result is satisfactory and application of clean water or nitric acid washing was carried out on the surface, until the dark blue disappear completely.

  正如标准A380[3]指出的如果铁锈试验溶液不能全部清除干净，不锈钢管不推荐在设备的工艺表面，即用来生产人类消费品的直接接触表面采用这种试验方法。比较简单的试验方法是在水中暴露12~24小时，检查是否有锈斑。这种试验灵敏性差，而且耗时。这些都是检测试验，不是清理方法。如果发现有铁存在，必须用后面介绍的化学和电化学的方法进行清理。

  As standard A380 [3] notes if the rust test solution can't clear clean, all stainless steel tube on the surface of the craft that equipment is not recommended, namely to produce human consumer direct contact surface using this test method.Relatively simple test method is exposed 12 ~ 24 hours in the water, check for a rusty spot.This kind of test sensitivity is poor, and time-consuming.These are test, not a cleaning method.If found to have iron exists, must use the introduction of the chemical and electrochemical methods to clean up.

  3、划痕

  3, scratch

  为了防止工艺润滑剂或生成物或污物积留，必须对划痕和其它粗糙表面进行机械清理。

  In order to prevent technology lubricant products or dirt deposition, scratches and other rough surfaces must be mechanical cleaning.

  4、热回火色和其它氧化层

  4, hot temper color and other oxide layer

  如果在焊接或修磨过程中不锈钢在空气中被加热到一定的高温，焊缝两侧、焊缝的下表面和底部都会出现铬氧化物热回火色。热回火色比氧化保护膜薄，而且明显可见。颜色决定于厚度,可呈见彩虹色、蓝色、紫色到淡黄色和棕色。较厚的氧化物一般为黑色。它是由于在高温或长时间在较高度下停留所致。当出现任何一种这类氧化层时，金属表面的铬含量都会降低，造成这些区域的耐腐蚀性降低。在这种情况下，不仅要消除热回火色和其它氧化层，还应对它们下面的贫铬金属层进行清理。

  If in the process of welding or grinding stainless steel in the air is heated to a high temperature, on both sides of weld, under the surface and bottom of the weld will appear chromium oxide thermal heat tint.Hot temper color than thin oxidation protective film, and visible.Color depends on the thickness, can see the rainbow color, blue, purple or light yellow and brown.Thicker oxide for black.It is because in the high temperature or long time stay in relatively high.When any one kind of this kind of oxide layer, the chromium content of the metal surface will reduce, which reduces the corrosion resistance of these regions.In this case, not only to eliminate the thermal heat tint and other oxidation layer, also deal with them to clean up the poor chromium metal layer.

  5、锈斑

  5, rusty spot

  制作前或制作过程中有时会看到不锈钢产品或设备上生锈，这说明表面受到严重污染。设备投入使用前必须把锈清除掉，彻底清理过的表面应通过铁试验和/或水试验进行检验。

  Before the production or manufacturing process sometimes see rust on the stainless steel product or equipment, it shows that surface severely contaminated.Investment of equipment before use must get rid of rust, surface should be thoroughly cleaned by iron test experiment and/or water.

  6、粗糙的研磨和机加工

  6, coarse grinding and machining

  研磨和机加工都会造成表面粗糙，留有凹槽，重叠和毛刺等缺陷。每种缺陷也可能使金属表面损伤到一定深度，以至于受损伤的金属表面无法通过酸洗，电抛光或喷丸等方法清理掉。粗糙表面能够成为发生腐蚀和沉积生成物的发源地，重焊前清理焊缝缺陷或清除多余的焊缝加强高都不能用粗磨进行研磨。对后一种情况，应再用细磨料研磨。

    Rough surface grinding and machining can create, leave grooves, overlapping and defects such as burrs.Each defect may also make the metal surface damage to a certain depth, so that damage to the metal surface through pickling, electrolytic polishing and shot peening method.Rough surface can become the birthplace of products, erosion and deposition heavy cleaning before welding defects or remove excess weld high strengthen can use coarse grinding for grinding.In the latter case, should with fine abrasive grinding.