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镀锌带钢质量的好坏及选购特点介绍

来源:http://www.jnxxjm.com

【 发布于:2019-04-08 15:31:05 】


镀锌带钢分为热镀和冷镀,热镀指的是火镀,热镀锌带钢的质量好坏主要看钢材材质和它的热处置情况,当然还包括热镀锌的上锌量。比如:普通带钢热镀锌有60克、80克、120克不等。冷镀的镀层厚度不会超越15微米,热镀镀层厚度不会低于30微米,以致更多。正轨的镀锌带钢消费厂家,为了保证质量,大多不采用电镀锌(冷镀)。我们普通所说的镀锌带钢指的是热镀锌带钢,我国北方诸多带钢工厂上锌量只做到40克左右,众所周知,上锌量的几直接影响到管材的抗腐才干强弱。质量不合格的带钢主要表往常管材表面有裂纹、龟裂,如若火候控制不好则可能构成材料过硬,关于镀锌管的弯曲工作会有不同程度的影响。

Galvanized strip steel is divided into hot-dip and cold-dip. Hot-dip refers to hot-dip. The quality of hot-dip galvanized strip steel depends mainly on the material of steel and its thermal disposal. Of course, the amount of galvanized strip is also included. For example: ordinary hot-dip galvanized strip steel has 60 grams, 80 grams, 120 grams and so on. The thickness of cold-plated coating will not exceed 15 microns, and that of hot-plated coating will not be less than 30 microns, so that more. In order to ensure the quality of normal rail galvanized strip steel consumer manufacturers, most of them do not use galvanized (cold plating). Generally speaking, galvanized strip refers to hot-dip galvanized strip. In many strip mills in northern China, the amount of zinc is only about 40 grams. It is well known that the amount of zinc directly affects the anti-corrosion ability of pipes. There are cracks and cracks on the surface of normal pipes in the main surface of unqualified strip steel. If the temperature is not controlled properly, the material may be too hard. The bending work of galvanized pipes will be affected to varying degrees.

消费工艺

Consumption technology

第一阶段

Stage one

把整卷的带钢中止酸洗除污,抵达表面光亮干净。

Stop pickling and clean the whole coil of strip and reach the surface bright and clean.

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第二阶段

The second stage

①热浸锌:酸洗后,经过氯化铵或氯化锌水溶液或氯化铵和氯化锌混合水溶液槽中中止清洗。然后送入热浸镀槽中,中止镀锌。

Hot dipping zinc: After pickling, the cleaning is stopped in the tank of ammonium chloride or zinc chloride aqueous solution or mixed aqueous solution of ammonium chloride and zinc chloride. Then it is fed into the hot-dip bath to stop galvanizing.

②热镀锌:酸洗后,经过氯化铵或氯化锌水溶液或氯化铵和氯化锌混合水溶液槽中中止清洗,送入连续退火炉后进入镀锌槽中,中止镀锌。

(2) Hot-dip galvanizing: After pickling, the cleaning is stopped in the tank of ammonium chloride or zinc chloride aqueous solution or the tank of ammonium chloride and zinc chloride mixed aqueous solution. After feeding into the continuous annealing furnace, it enters the galvanizing tank and stops galvanizing.

③直镀锌:酸洗后,送入连续退火炉后进入镀锌槽中,中止镀锌。

Direct galvanizing: After pickling, it is fed into continuous annealing furnace and enters galvanizing bath to stop galvanizing.

第三阶段

The third stage

带钢镀锌后盘起入库,镀锌层可根据客户需求,普通不小于50g/平方米,其中任何试样不得小于48g/平方米。

After galvanizing, the galvanized strip can be put into storage. The galvanized layer can be at least 50g/m2 according to customer's requirements, and any sample should not be less than 48g/m2.

产品性能

Product performance

后期处置

Later disposal

镀锌带钢的后处置包括三方面,钝化、预磷化和涂油。首先要对镀锌带钢中止钝化处置,可以改善镀锌层的表面结构和光泽,进步镀锌层的耐蚀性能及运用寿命,并能改善涂层与基体金属的别离力。钝化处置主要采用铬酸盐钝化。在钝化液中添加一些活化剂,如氟化物、磷酸或硫酸等,使得钝化后得到较厚的铬酸盐膜。当钝化液中有氟化物时可降低钢带表面张力,加速成膜反响,并能增加化学抛光作用,使钝化膜细致光亮。

Post-treatment of galvanized strip includes passivation, pre-phosphating and oil coating. First of all, to stop passivation treatment of galvanized strip steel can improve the surface structure and gloss of galvanized layer, improve the corrosion resistance and service life of galvanized layer, and improve the separation force between coating and matrix metal. Chromate passivation is mainly used in passivation treatment. Some activators such as fluoride, phosphoric acid or sulphuric acid were added to the passivation solution to obtain thicker chromate film after passivation. When fluoride is present in the passivation solution, the surface tension of the steel strip can be reduced, the film forming reaction can be accelerated, and the chemical polishing effect can be increased, so that the passivation film is fine and bright.

镀锌带钢的应用效果契合现代需求,在往常曾经普遍作为建筑材料运用。镀锌带钢具有多年不生锈、耐腐蚀的特性,它可以做到不受外界不良环境影响,不断坚持自身性能和外观。在运用镀锌带钢的过程中,为了进步其作业效能和自身特性,可以对镀锌带钢废品中止后处置,使其性能表现愈加出色。

The application effect of galvanized strip steel meets the needs of modern times and has been widely used as building materials in the past. Galvanized strip steel has the characteristics of rust-free and corrosion-resistant for many years. It can not be affected by adverse external environment, and constantly adhere to its own performance and appearance. In the process of using galvanized strip steel, in order to improve its operational efficiency and self-characteristics, it is possible to dispose of galvanized strip steel scrap after suspension, so as to make its performance more excellent.

本文来自:济南镀锌管更多的内容请点击:http://www.jnxxjm.com  我们将会为您提问的问题提供一个满意的服务,欢迎您的来电!

This article is from: Jinan galvanized pipe more content please click: http://www.jnxjm.com, we will provide you with a satisfactory service to ask questions, welcome your call!



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