您好,欢迎来到济南新雄经贸有限公司官方网站!

400-0616-756

公司新闻

companynews

产品中心
当前位置: 首页-新闻中心-公司新闻-济南镀锌管的主要空拔问题是什么

济南镀锌管的主要空拔问题是什么

来源:http://www.jnxxjm.com

【 发布于:2020-05-11 13:44:35 】


  现在济南镀锌管退磁一般选择直流消磁线圈,添加退磁线圈的磁粉探伤机,但是退磁效应并不能使客户满意,问题是直流磁场产生逆半循环回来,怎么只会让大直径螺旋管退磁内部剩余磁化反向部分抵消,外部的剩磁性能在要求的范围内,所以效果不是很稳定。

  Now Jinan galvanized pipe demagnetization generally chooses DC demagnetization coil and magnetic particle flaw detector with demagnetization coil, but demagnetization effect can't satisfy customers. The problem is that the DC magnetic field produces reverse half cycle back, how can only make the internal residual magnetization of large diameter spiral pipe demagnetization partially offset, and the external residual magnetization performance is within the required range, so the effect is not very stable.

济南镀锌管

  经常可以在磁场中达到标准,经过搬运、捶打,磁场超过。究其原因,是大直径螺旋钢管的消磁内部磁畴一直没有得到“磁行使”,处于非常稳定的状态。大直径螺旋钢管的国家退磁标准为30GS以下。HT30D钢管退磁系统可以将钢管的退磁稳定在10GS左右,避免后期运输过程中退磁反弹。外型尺寸:400*500*600mm工作电压:220V工作电流:5-20a连续可调工作频率:0-50hz连续可调退磁线圈内径:100-250(可根据客户要求)。

  It can often reach the standard in the magnetic field. After handling and hammering, the magnetic field exceeds. The reason is that the degaussing internal domain of the large-diameter spiral steel tube has not been "magnetic exercise", and it is in a very stable state. The national demagnetization standard of large diameter spiral steel pipe is below 30gs. The demagnetization system of HT30D steel tube can stabilize the demagnetization of the steel tube at about 10GS, avoiding the demagnetization rebound in the later transportation process. External dimension: 400 * 500 * 600mm working voltage: 220V working current: 5-20A continuously adjustable working frequency: 0-50Hz continuously adjustable demagnetization coil inner diameter: 100-250 (according to customer requirements).

  空拔后济南拉镀锌钢管的表面面积增加,内表面的表面积减少,内外表层,将会有一个中性层外每一层之间的中性层和表面变形后增加表面积,中性层的内表面之间的每一层的表面积减少变形后,在内降低表面。济南镀锌钢管各层表面面积的变化影响金属变形的不均匀性。它的一个特点是,自然延伸沿墙每一层是不一致的,济南的自然延伸的镀锌钢管外表面层,济南镀锌钢管内表面的层,中间层的自然延伸的外表面一层一层的内表面逐渐增加。第二个特点是,由于整体关系,济南镀锌钢管层的变形不能有不同的延展性,因此,层间必须是相互的。自自然延伸的外表面和中性层之间的金属(称为外层)小于中性层和内层之间(称为内层),外层必须受制于内层变形期间,和其实际扩展大于自然延伸,而其厚度减少由于增加的扩展。相反,内层的延伸受到外层的阻碍,外层的延伸实际上小于自然延伸,厚度增加。

  After empty drawing, the surface area of Jinan galvanized steel pipe increases, and the surface area of the inner surface decreases. There will be a neutral layer on the inner and outer surface, and the surface area will increase after surface deformation. After the surface area of each layer between the inner surfaces of the neutral layer decreases after deformation, the inner surface will decrease. The change of surface area of each layer of Jinan galvanized steel pipe affects the inhomogeneity of metal deformation. One of its characteristics is that each layer of natural extension along the wall is inconsistent, the outer surface layer of Jinan natural extension galvanized steel pipe, the inner surface layer of Jinan galvanized steel pipe, and the inner surface layer by layer of the outer surface of the middle layer natural extension gradually increase. The second feature is that due to the overall relationship, the deformation of Jinan galvanized steel pipe layer cannot have different ductility, so the layers must be mutual. The metal (called outer layer) between the outer surface and the neutral layer extending naturally is smaller than that between the neutral layer and the inner layer (called inner layer). The outer layer must be subject to the inner layer deformation period, and its actual extension is larger than that of natural extension, while its thickness decreases due to the increase of extension. On the contrary, the extension of the inner layer is hindered by the outer layer, the extension of the outer layer is actually smaller than the natural extension, and the thickness increases.

  济南镀锌钢管的拉拔速度对拉拔机的生产率有很大的影响。高速拔管可以缩短拔管周期,提高拔管生产率。目前,国内技术机拔管速度已达到40m/min(可调速),国外技术机拔管速度已达到100m/min。一般情况下,济南地区镀锌钢管的拉拔速度越高,变形区金属的轴向移动速度越快,济南地区空拉拔镀锌钢管的缩径越大。然而,在300kN速度可调拔管机上的实验研究表明,拔管速度对空管直径减小的影响不大,这可能是由于拔管速度较慢造成的。因此,可以得出结论,低速拉拔对济南镀锌钢管的缩径影响不大。

  The drawing speed of Jinan galvanized steel pipe has a great influence on the productivity of the drawing machine. High speed tube drawing can shorten the period of tube drawing and improve the productivity of tube drawing. At present, the pulling speed of domestic technology has reached 40 m / min (adjustable speed), and that of foreign technology has reached 100 m / min. Generally, the higher the drawing speed of galvanized steel pipe in Jinan area is, the faster the axial movement speed of metal in deformation area is, and the larger the reduction diameter of empty drawing galvanized steel pipe in Jinan area is. However, the experimental study on the 300KN speed adjustable tube drawing machine shows that the effect of the tube drawing speed on the reduction of the empty tube diameter is not significant, which may be due to the slow pulling speed. Therefore, it can be concluded that low speed drawing has little effect on the reduction of Jinan galvanized steel pipe.

  以上是济南镀锌管制造商为大家介绍的相关内容,想要了解更多内容,欢迎访问网站:http://www.jnxxjm.com

  The above is the relevant content introduced by Jinan zinc plating control manufacturer. For more information, please visit the website: http://www.jnxxjm.com



上一篇:螺旋钢管热处理方法你了解吗?
下一篇:镀锌方管采用镀锌技术的应用