變形首先是焊接Q345B方管的焊接應(yīng)力的存在的問題，方管加工時(shí)刻及加工機(jī)械節(jié)省 因?yàn)榫染_，外表狀況良好，冷拉鋼商品可直接運(yùn)用，如噴涂、打砂，折彎，鉆孔也可按實(shí)踐需求精拉以后直接電鍍，免去了很多加工。 如果想降低變形量或達(dá)到理想的尺寸誤差范圍，首先就焊接時(shí)的工件的工裝及焊接順序是必須的，每個(gè)焊接完的工件都有焊接內(nèi)應(yīng)力，如果想消除有以下幾種方式：

Deformation is the problem of welding stress in welding Q345B square pipe. The processing time and processing machinery of square pipe are saved because of its precise accuracy and good appearance. Cold-drawn steel products can be directly used, such as spraying, sanding, bending, drilling and direct electroplating after finishing drawing according to practical requirements, which eliminates a lot of processing. If you want to reduce the deformation or achieve the desired size error range, first of all, the assembly and welding sequence of the workpiece during welding is necessary. Every welded workpiece has welding internal stress. If you want to eliminate the following ways:

1.自然時(shí)效，熱處理，振動(dòng)時(shí)效。自然時(shí)效已經(jīng)不能適應(yīng)大多數(shù)方管廠家的生產(chǎn)要求，周期太長(zhǎng)。

1. Natural ageing, heat treatment, vibration ageing. Natural aging has been unable to meet the production requirements of most factories, and the cycle is too long.

2.使用熱處理，熱處理是一種效果較明顯的去除焊接應(yīng)力的方式，好多方管廠家其耗費(fèi)大量的資金也是望而卻步，振動(dòng)時(shí)效因?yàn)槠鋽y帶方便，經(jīng)濟(jì)適用，效果明顯深受各大機(jī)械加工客戶的青睞。它是通過高頻振動(dòng)的方式是金屬內(nèi)部的晶體滑移，使其重新分布從而達(dá)到內(nèi)應(yīng)力的相互抵消，保證工件的尺寸精度。

2. Using heat treatment, heat treatment is a more effective way to remove welding stress. Many factories are discouraged because of the large amount of money they consume. Vibration stress relief is easy to carry, economical and applicable, and the effect is obviously favored by the major mechanical processing customers. It is through the way of high frequency vibration that the crystals inside the metal slip and redistribute so as to achieve the mutual counteraction of internal stress and ensure the dimensional accuracy of the workpiece.方管泛應(yīng)用于機(jī)械制造、輕工、五金、標(biāo)準(zhǔn)件、自行車、轎車、摩托車、紡織機(jī)械、變壓器及其他機(jī)械行業(yè)。 冷拉方鋼形狀標(biāo)準(zhǔn)多樣性。 經(jīng)過設(shè)計(jì)不一樣形狀的模具，冷拉出不一樣截面形狀、不一樣大小標(biāo)準(zhǔn)公役。視點(diǎn)可設(shè)制成直角或圓角。 高精確度。 運(yùn)用高質(zhì)量的硬質(zhì)合金模具以及擁有專業(yè)技能人員，公役精確、一致。 外表潤(rùn)滑。 領(lǐng)先的冷拉工藝使冷拉鋼商品外表潤(rùn)滑明亮。 資料很多節(jié)省。 冷拉鋼是將原資料冷擠壓變形達(dá)到需的形狀、所需求的標(biāo)準(zhǔn)及公役，原材的耗損極少，相對(duì)運(yùn)用傳統(tǒng)車床機(jī)加工切削所損耗的資料，冷拉 鋼所節(jié)省的資料對(duì)錯(cuò)?？捎^的，特別當(dāng)資料用量大，資料本錢的節(jié)省更為明顯。

Commodities are widely used in machinery manufacturing, light industry, hardware, standard parts, bicycles, cars, motorcycles, textile machinery, transformers and other mechanical industries. Diversity of shape standards for cold drawn square steel. After designing different shapes of dies, different cross-section shapes and sizes of standard public service can be drawn out by cold drawing. Viewpoints can be set to right or round corners. High accuracy. The use of high quality cemented carbide die and professional skilled personnel, public service accurate and consistent. Appearance lubrication. Leading cold-drawing process makes the appearance of cold-drawn steel products lubricated and bright. A lot of information is saved. Cold-drawn steel is the raw material cold extrusion deformation to meet the required shape, required standards and public service, the loss of raw material is very small, compared with the use of traditional lathe cutting loss of information, the data saved by cold-drawn steel is often considerable, especially when the amount of data is large, the saving of data cost is more obvious.