在焊管生產完整過程中，隻需（xū）開展（zhǎn）銲接，焊管要樣兒就會形成剪應力（lì）和蛻變，可以（yǐ）具體程度有所（suǒ）區（qū）別而已。焊管在銲接完整過程中形成的（de）銲接剪（jiǎn）應力（lì）和多種蛻變，經常使銲接產（chǎn）質量水平量需要，甚至還會導（dǎo）致（zhì）裂痕。銲接蛻變導致焊（hàn）件度量衡，幾何形狀的（de）革命（mìng），這（zhè）一類型的情況革命進行進步（bù）準譜（pǔ）兒的實（shí）測值後，或許束手無策與其說他焊管包括（kuò）或並未進行足額的進行加工容量束手無策（cè）開展持續切（qiē）削進行加工。見下文我們說下（xià）剪應力（lì）和蛻變。
In the production process of welded pipe, as long as welding is carried out, stress and deformation will occur on the surface of welded pipe, but to varying degrees. Welding stress and various deformations of welded pipes in the welding process often cause the quality of welded products to decline, and even cause cracks. Welding deformation results in the change of weld size and shape. If the change exceeds a certain value, it may not be able to connect with other welded pipes or not have enough machining allowance for cutting. Now let's talk about stress and deformation. 首次是焊管的要樣兒剪應力，當材料進行幫子名著用下無法形成（chéng）移動時，它的多少幾何形狀和度量衡（héng）將出現革命，這一（yī）類型的情況突變就進行稱號應急。材料出現突變時關於其內部形成了大大小小認為但大方（fāng）向麵對麵的反實際作用（yòng）力（lì）對手電力，把進行散步電力在一些的集度進行稱號剪應力，剪應力與微表麵積（jī）的（de）產物即為（wéi）電力，或物質因為外因(受力、熱度革（gé）命等)而蛻變時，在（zài）物質內關於各部（bù）分彼此之間形成相（xiàng）互之間實際作用的電力，以對手這一類型的情況外因的實際作用（yòng），騷情賦骨圖使物質從蛻變（biàn）後的所在地恢（huī）複到蛻變前的所在地。
First is the surface stress of welded pipe. When the material can not produce displacement under external force, its geometry and size will change. This deformation is called strain. When a material is deformed, it produces internal reaction force of equal size but opposite direction to resist external force. The concentration degree of distributed internal force at a point is called stress. The product of stress and micro-area is internal force, or when the object is deformed by external factors (force, temperature change, etc.), the internal force interacts among various parts of the object to resist the effect of external factors. Make the object return from the position after deformation to the position before deformation.
從量子力學觀（guān）點卻說，蛻變是指整體結構(或這個一部分)幾何形（xíng）狀的成為。任（rèn）意一種相關情況整體結構都是由進行無常形（xíng）顛撲不破材料構成，進行（háng）幫子名著用下將會形成蛻變和活（huó）動。
From a mechanical point of view, deformation refers to the change of the shape of a structure (or part of it). Any structure is composed of deformable solid materials, which will produce deformation and displacement under the action of external forces.
在焊管（guǎn）生產完整過程中，哪怕能矯正，如機械（xiè）或（huò）火（huǒ）燄矯正過來，這也不單（dān）困難困難，並且（qiě）又增添了焊管的額外增加剪應力，對進行營造采用（yòng）著名、通過，我們一定要對銲接剪應力和蛻變的（de）形成原因、大大（dà）小小具體程（chéng）度（dù）還有怎麽樣縮小（xiǎo）和防止銲接剪（jiǎn）應力和蛻變開展掌握。
In the production process of welded pipe, even if it can be corrected, such as mechanical or flame correction, it will not only take time and effort, but also increase the additional stress of welded pipe, which is unfavorable for construction and use. Therefore, we must understand the causes, magnitude and extent of welding stress and deformation, and how to reduce and avoid welding stress and deformation.
