不锈钢螺旋风管制作成型要点

发布人：http://www.sftfgd.com   发布时间：2023-02-10 18:05:42

原材料即带钢卷，焊丝，焊剂。在投入前都要经过严格的理化检验。

Raw materials are strip steel coil, welding wire and flux. Strict physical and chemical tests shall be conducted before input.

带钢头尾对接，采用单丝或双丝埋弧焊接，在卷成钢管后采用自动埋弧焊补焊。

The head and tail butt joint of strip steel shall be welded by single wire or double wire submerged arc welding, and the automatic submerged arc welding repair welding shall be adopted after rolling into steel pipe.

不锈钢螺旋风管成型前，带钢经过矫平剪边刨边，表面清理输送和予弯边处理。

Before forming the stainless steel spiral air duct, the strip steel is leveled, trimmed, planed, cleaned, transported and pre-bent.

采用电接点压力表控制输送机两边压下油缸的压力,保障了带钢的平稳输送。

The electric contact pressure gauge is used to control the pressure of the down cylinder on both sides of the conveyor to ensure the smooth delivery of the strip steel.

采用外控或内控辊式成型。

External control or internal control roll forming is adopted.

采用焊缝间隙控制装置来保障焊缝间隙符合焊接要求,管径,错边量和焊缝间隙都得到严格的控制。

The weld gap control device is used to ensure that the weld gap meets the welding requirements, and the pipe diameter, misalignment and weld gap are strictly controlled.

内焊和外焊均采用电焊机进行单丝或双丝埋弧焊接，从而获得稳定的焊接质量。

Electric welding machine is used for single wire or double wire submerged arc welding for internal and external welding, so as to obtain stable welding quality.

焊完的焊缝均经过在线连续超声波自动伤仪检查,保障了螺旋焊缝的没损检测覆盖率。若有缺陷，自动报警并喷涂标记,生产工人依此实时调整工艺参数，及时消掉缺陷。

The welded seams are inspected by online continuous ultrasonic automatic flaw detector, which ensures the nondestructive detection coverage of spiral welds. If there is a defect, it will automatically alarm and spray the mark, and the production workers will adjust the process parameters in real time to eliminate the defect in time.

采用空气等离子切割机将钢管切成单根。

The steel pipe is cut into single pieces by air plasma cutting machine.

切成单根钢管后,每批钢管都要进行严格的先检制度,检查焊缝的力学性能，化学成份,溶台状况，不锈钢螺旋风管表面质量以及经过没损探伤检验，保障制管工艺合格后，才能正式投入生产。

After cutting into a single steel pipe, each batch of steel pipes shall be subject to a strict pre-inspection system to check the mechanical properties of the weld, chemical composition, melting table condition, surface quality of the stainless steel spiral air duct, and nondestructive flaw detection to ensure that the pipe manufacturing process is qualified before they can be officially put into production.

焊缝上有连续声波探伤标记的部位,经过手动超声波和X射线复查,如确有缺陷，经过修补后,再次经过没损检验，直到确认缺陷已经消掉。

The parts with continuous sound wave flaw detection mark on the weld shall be rechecked by manual ultrasonic and X-ray. If there is any defect, it shall be repaired and undergo non-destructive inspection again until it is confirmed that the defect has been eliminated.

带钢对焊焊缝及与螺旋焊缝相交的丁型接头的所在管，经过X射线电视或拍片检查。

The pipe where the butt weld of strip steel and the T-joint intersected with the spiral weld are located shall be inspected by X-ray television or film.

每根不锈钢螺旋风管经过静水压试验，压力采用径向密封。试验压力和时间都由钢管水压微机检测装置严格控制。试验参数自动打印记录。

Each stainless steel spiral air duct is subjected to hydrostatic pressure test, and the pressure is sealed radially. The test pressure and time are strictly controlled by the steel pipe water pressure microcomputer detection device. Test parameters are automatically printed and recorded.

管端机械加工，使端面垂直度，坡口角和钝边得到准确控制。

The pipe end is machined to accurately control the end perpendicularity, groove angle and blunt edge.