中频弯管成型技术基本工艺过程是：首先焊接一个横截面为多边形的多棱环壳或两端封闭的多棱扇形壳，内部冲满压力介质后，施以内压，在内压作用下横截面由多边形逐渐变成圆，最终成为一个圆形环壳。根据需要，一个圆形环壳可以切割成4个90○弯头或6个60○弯头或其它规格的弯头，该工艺适用于制造弯头中径与弯头内径比大于1.5的任何规格大型弯头，是目前制造大型承压弯头的理想方法。优点主要表现在以下几个方面：（1）不需管坯作原料，可节约制管设备及模具费用，且可得到任意大直径而壁厚相对较薄的弯头。（2）坯料为平板或可展曲面，因而下料简单，精度容易保证，组装焊接方便。（3）由于上述二条原因，可以缩短制造周期，生产成本大大降低。因不需要任何专用设备，尤其适合于现场加工大型弯头。该技术已申报国家发明专利。
The intermediate frequency elbow piece formation technology basic technological process is: First welds a lateral section is the polygon many leng link shell or both sides seal many leng fan-shaped shells, after the interior flushes the full pressure medium, the serve intrinsic pressure, under the intrinsic pressure function the lateral section by the polygon gradually changes a full circle, ends in a circular link shell. According to the need, a circular link shell may cut 4 900 bends either 6 600 bends or other specification bends, this craft is suitable in the manufacture bend pitch diameter and the bend inside diameter compared to is bigger than 1.5 any specification large-scale bends, is the present manufacture large-scale bearing pressure bend's ideal method. The merit mainly displays in the following several aspects: (1) does not need the unfinished piping to make raw material, may save the tube making equipment and the mold expense, and may obtain willfully the large diameter but wall thickness relatively thin bend. perhaps (2) the semifinished materials may unfold the surface for the plate, thus the yummy treats are simple, the precision easy to guarantee, the assembly welding is convenient. (3) as a result of the above two reasons, may reduce the manufacturing cycle, the production cost reduces greatly. Because does not need any special purpose equipment, especially suits in the field processing large-scale bend. This technology has reported the country patent of invention.
技术指标
本技术适用于制造工作压力小于10MPa、弯头内径d125mm，弯头中径D与弯头内径d比值D/d 1.5的任何弯头，而合金冲压弯头中径的大小不受限制。例如可以加工弯头内径为12m，弯头中径为60m以上的大型弯头。
应用领域：石油、天然气、化工、水电、建筑和锅炉等行业的管路系统。
孟村县保圣弯头法兰厂，位于中国管件之都----孟村县新满工业园，主要产销售各种规格的法兰、弯头、高压弯头、管件、不锈钢弯头、三通、无缝钢管、封头、耐磨弯头等管件用品。还可根据顾客提供的技术资料生产各种异难、非标、特厚壁管道连接件。产品畅销全国各地，广泛出口欧美、中东及东南亚国家和地区。
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