電熱管彎管方法

(1).按生產令要求切引出棒外露長度，將切口倒角磨掉損壞的螺紋，并倒角0.5×45°， 保證與之配合螺紋能順利地旋入；

(1).?According to the production?order requires?cutting?lead?exposed length ofincision,?the?chamfer grinding?off the damaged?threads,?and?0.5?× 45?° chamfer,?ensure with thread can successfully screwed;

(2).按圖或樣品彎曲成形，電加熱管外觀不得有明顯的機械傷痕或局部膨脹，彎曲處不 得有皺紋、凹凸等現象；

(2).?According to the drawing?or sample?bending forming,?electric heating tubeappearance?may not have?mechanical injuries?or local?obvious expansion,bend?not?have?wrinkles,?uneven?phenomenon;

(3).彎曲半徑小于3倍管徑并不退火的情況下，應保證管焊縫方向朝內Ｒ處（不易斷裂）；

(3).?The bending?radius of less than 3?times of diameter?not?annealingconditions,?should guarantee the?pipe?weld direction?in?R?(not?Yi Duanlie);

(4).自檢為主，檢驗員首檢并抽檢。

(4).?Self inspection,?inspectors?first article inspection?and?sampling.

工夾量具及設備：彎管夾具、彎管機、油壓機、沖床、砂輪機、卡尺、萬能角度尺、卷尺。

Folder measuring?and equipment:?bending fixture,?bending machine,hydraulic machine,?punching machine,?grinder,?calipers,?universal angle ruler,tape measure.

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