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碳钢弯管的设计、制造和加工

来源:http://www.jnxxjm.com

【 发布于:2020-02-25 13:06:34 】


  在设计和制造碳钢弯管时,必须考虑弯管的硬度。热压弯头退火是将钢加热到发生相变或部分相变的温度,保温后缓慢冷却的热处理方法。退火的目的是消除组织缺陷,改善组织结构,使零件均匀化,细化晶粒,提高热压弯头的力学性能,降低残余应力。

  When designing and manufacturing carbon steel bends, the hardness of the bends must be considered. Annealing of hot pressed elbow is a heat treatment method that heating the steel to the temperature of phase transformation or partial phase transformation and cooling it slowly after heat preservation. The purpose of annealing is to eliminate the defects, improve the structure, homogenize the parts, refine the grains, improve the mechanical properties of the hot pressed elbow and reduce the residual stress.

  碳钢弯管是由热压或锻钢制成的异径管。其连接形式为异径管与钢管的直接对接焊。同心异径管的主要制造标准一般为GB/T12459、GB/T13401、ASME B16.9、SH3408、SH3409、HG/T21635、HG/T21631、SY/T0510。同心减速机还可与碳钢、合金钢、不锈钢等偏心轮减速机配套使用。

  Carbon steel bends are reducers made of hot pressed or forged steel. The connection form is direct butt welding of reducer and steel pipe. The main manufacturing standards of concentric reducer are generally GB / t12459, GB / T13401, ASME b16.9, sh3408, sh3409, Hg / t21635, Hg / t21631, SY / t0510. Concentric reducer can also be used with carbon steel, alloy steel, stainless steel and other eccentric reducer.

  碳钢弯管广泛应用于石油、天然气、化工、水电、建筑、锅炉等行业。管道系统对接焊弯头的成形过程复杂,需要根据不同的材料和用途进行焊接,并在一定的压力下逐步成形。

  Carbon steel elbow is widely used in oil, natural gas, chemical industry, hydropower, construction, boiler and other industries. The forming process of butt welding elbow of pipeline system is complex, which needs to be welded according to different materials and uses, and gradually formed under certain pressure.

  碳钢弯管成形工艺的优点主要体现在以下几个方面:

  The advantages of carbon steel bending process are mainly reflected in the following aspects:

  1. 不需要使用管坯作为原材料,可以节省制管设备和模具的成本,获得任意大直径、壁厚相对较薄的尺寸头。这种封头的原材料比较特殊,不需要添加管坯的原材料,在加工过程中容易控制。

    济南镀锌管

  1. Without using tube blank as raw material, the cost of tube making equipment and mould can be saved, and any size head with large diameter and relatively thin wall thickness can be obtained. The raw material of this kind of head is very special, so it is easy to control in the process of machining without adding the raw material of tube blank.

  2、不需要原材料,可以节省管道设备和模具的成本,并可以得到任何大直径和相对薄壁厚的碳钢弯头。

  2. Without raw materials, the cost of pipeline equipment and mould can be saved, and any large diameter and relatively thin-walled carbon steel elbow can be obtained.

  3.由于上述两个原因,可以缩短制造周期,大大降低生产成本。由于不需要特殊设备,特别适合现场加工碳钢封头。

  3. Because of the above two reasons, the manufacturing cycle can be shortened and the production cost can be greatly reduced. As no special equipment is required, it is especially suitable for field processing of carbon steel head.

  首先,将碳素钢弯头焊接成多角形的多边环形壳体或两端封闭的多边扇形壳体。当内部充满压力介质后,施加内部压力。在内部压力的作用下,截面逐渐由多边形变为圆形的环状壳体。根据需要,可以切成圆环壳4 90弯曲或6 60弯曲或其他规格,这个过程是适用于任何大型弯头的生产中间直径比的肘弯管的内径大于1.5,是目前理想的方法制造大型碳钢弯头。

  Firstly, the carbon steel elbow is welded into a polygonal multilateral circular shell or a multilateral sector shell with both ends closed. When the inside is full of pressure medium, apply internal pressure. Under the action of internal pressure, the cross-section changes from polygon to circular shell. According to the need, it can be cut into torus shell with 4 90 bending or 6 60 bending or other specifications. This process is suitable for the production of any large-scale elbow with the middle diameter ratio of the elbow with the inner diameter greater than 1.5. It is an ideal method to manufacture large-scale carbon steel elbow at present.

  以上是济南镀锌管生产厂家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.comThe above is the relevant content introduced by Jinan galvanized pipe manufacturer. For more information, please visit the website: http://www.jnxxjm.com



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