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镀锌钢管的热加工应该注意哪些?

来源:http://www.jnxxjm.com

【 发布于:2019-06-21 18:55:25 】


镀锌钢管是一种空心方形的截面轻型薄壁钢管,也称为钢制冷弯型材。它是以Q235热轧或冷轧带钢或卷板为母材经冷弯曲加工成型后再经高频焊接制成的方形截面外形尺寸的型钢。热轧特厚壁镀锌钢管除壁厚增厚外状况,其角部尺寸和边部平直度均到达以至超越电阻焊冷成型镀锌钢管的程度。焊接镀锌钢管的主要焊接工艺

Galvanized steel pipe is a kind of hollow square section light-weight thin-walled steel pipe, also known as steel refrigeration bending section. It is made of Q235 hot-rolled or cold-rolled strip or coil as base material by cold bending, forming and high frequency welding. Hot-rolled extra-thick wall galvanized steel pipes have corner size and flatness beyond resistance welding cold-formed galvanized steel pipes except for wall thickness thickening. MAIN WELDING TECHNOLOGY OF GALVANIZED STEEL TUBES

焊接镀锌钢管较窄的坯料消费管径较大的焊管,还能够用同样宽度的坯料消费管径不同的焊管。但是与相 同长度的直缝镀锌钢管相比,焊缝长度增加30~100%,而且消费速度较低。

Welded galvanized steel pipe with narrower billet consumes larger diameter welded pipe, and can consume welded pipe with different diameter with the same width billet. However, compared with the straight galvanized steel pipe with the same length, the length of the weld increases by 30-100%, and the consumption rate is lower.

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直径大或较厚的焊接镀锌钢管,普通用钢坯料直接做成,而小焊管薄壁焊管只需求经过钢带直接焊接就能够了。然后经过简单抛光,拉丝就能够了。因而,较小口径的焊管大都采用直缝焊,大口径焊管则大多采用螺旋焊。综合力学性能好,焊接性,冷,热加工性能和耐腐蚀性能均好,具有良好的低温韧性。

Welded galvanized steel pipes with large diameter or thicker thickness are usually directly made of steel billet, while thin-walled welded pipes with small welded pipes only need to be directly welded through steel strips. Then after a simple polishing, wire drawing can be done. Therefore, most of the smaller diameter welded pipes are welded by straight seam welding, while the larger diameter welded pipes are mostly welded by spiral welding. It has good mechanical properties, weldability, cold, hot working and corrosion resistance, and good low temperature toughness.

镀锌钢管消费工艺简单,消费效率高,本钱低,开展较快。螺旋焊管的强度普通比镀锌钢管高,能用较窄的坯料消费管径较大的焊管,还能够用同样宽度的坯料消费管径不同的焊管。但是与相同长度的直缝管相比,焊缝长度增加30~100%,而且消费速度较低。

Galvanized steel pipe has the advantages of simple consumption process, high consumption efficiency, low cost and rapid development. The strength of spiral welded pipe is generally higher than that of galvanized steel pipe. It can consume welded pipe with bigger diameter with narrower blank and welded pipe with different diameter with the same width blank. However, compared with the straight seam pipe of the same length, the length of the weld increases by 30-100%, and the consumption rate is lower.

因而,较小口径的镀锌管大都采用直缝焊,大口径焊管则大多采用螺旋镀锌钢管按横截面积外形的不同,可分为圆管和异型管。由于在周长相等的条件下,圆面积大,用圆形管能够保送更多的流体。此外,圆环截面在接受内部或外部径向压力时,受力较平均,因而,绝大多数钢管是圆管

Therefore, the smaller diameter galvanized pipes are mostly welded by straight seam, while the larger diameter galvanized pipes are mostly welded by spiral galvanized pipes, which can be divided into round pipes and special-shaped pipes according to the shape of cross-sectional area. Because the circle area is the largest under the condition of equal circumference, more fluid can be delivered by the circular tube. In addition, when the circular section receives the internal or external radial pressure, the force is relatively average, so most of the steel tubes are circular tubes.

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Thank you for your reading, this article source: Jinan galvanized pipe more content and questions, please click: http://www.jnxxjm.com, we will continue to work hard to provide you with services, thank you for your support.



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