風(fēng)管加工的操控關(guān)鍵是怎樣的？

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風(fēng)管加工、設(shè)備工藝要求和質(zhì)量控制關(guān)鍵，應(yīng)選擇咬口連接或鉚接，不得焊接；風(fēng)管板拼接咬縫應(yīng)錯(cuò)開，無(wú)交叉拼接縫，咬縫緊密，寬度一致，折疊角直，弧均勻，兩端平行；風(fēng)管無(wú)明顯扭曲和翹曲角，表面平整，凹凸不大于。

For air duct processing, equipment process requirements and key quality control, bite connection or riveting shall be selected instead of welding; The splicing and biting joints of air duct plates shall be staggered without cross splicing joints. The biting joints shall be tight, the width shall be consistent, the folding angle shall be straight, the arc shall be uniform, and the two ends shall be parallel; The air duct shall be free of obvious distortion and warping angle, and the surface shall be flat, and the concave convex shall not be greater than.

風(fēng)管外徑或外長(zhǎng)的承諾誤差為負(fù)誤差，當(dāng)風(fēng)管大邊長(zhǎng)小于或等于630mm時(shí)，為-1mm；當(dāng)大于630mm時(shí)，管口平面度的承諾誤差為1mm，矩形風(fēng)管兩條對(duì)角線的長(zhǎng)差不大于，矩形風(fēng)管邊長(zhǎng)大于630mm，保溫風(fēng)管邊長(zhǎng)大于800mm。

The committed error of the outer diameter or outer diameter of the air duct is negative. When the large side length of the air duct is less than or equal to 630mm, it is - 1mm; When it is greater than 630mm, the promised error of nozzle flatness is 1mm, the length difference of two diagonal lines of rectangular air duct is not greater than, the side length of rectangular air duct is greater than 630mm, and the side length of thermal insulation air duct is greater than 800mm.

管段長(zhǎng)度大于1250mm或低壓風(fēng)管單側(cè)平面積大于1.2mm，中高壓風(fēng)管大于1.0mm，應(yīng)采用加固方法。質(zhì)量控制關(guān)鍵風(fēng)管與法蘭鉚接前應(yīng)進(jìn)行技術(shù)質(zhì)量審查，管段應(yīng)留出10mm翻邊量。連接法蘭鉚釘時(shí)，有必要將鉚釘中線垂直于板面，使鉚釘頭壓緊板材，使板縫緊密。

If the length of the pipe section is greater than 1250mm, or the flat area of one side of the low-pressure air duct is greater than 1.2mm, and the medium and high-pressure air duct is greater than 1.0mm, the reinforcement method shall be adopted. Technical quality review shall be conducted before riveting the key air duct and flange for quality control, and 10mm flanging amount shall be reserved for the pipe section. When connecting flange rivets, it is necessary to make the rivet center line perpendicular to the plate surface, so that the rivet head presses the plate to make the plate seam tight.

鉚接法蘭應(yīng)采用液壓鉚釘機(jī)械鉚接。鉚接應(yīng)牢固，鉚釘不得脫落或泄漏。風(fēng)管與法蘭連接時(shí)，翻邊寬度不小于6mm，翻邊均勻平整，靠近法蘭，翻邊不得覆蓋螺孔，四角需要平整，無(wú)開口。

Riveted flanges shall be mechanically riveted with hydraulic rivets. The riveting shall be firm and the rivets shall not fall off or leak. When the air duct is connected with the flange, the flanging width shall not be less than 6mm, the flanging shall be uniform and flat, close to the flange, the flanging shall not cover the screw hole, and the four corners shall be flat without opening.

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