With the improvement of production technology, the output of square tube also increases, there are more and more unqualified square tube on the market, so how to produce all aspects of qualified square tube products? Here is a detailed introduction.

　　方管做冷拉時要采購寶鋼的材料，因為寶鋼的材料經過級探傷處理，鋼材的密度比較好，冷拉加溫后，便于成行，將鋼材于常溫下進行冷拉使產生塑性變形，從而提高屈服強度，這個過程稱為冷拉強化，方管一般用于要求高的產品部件有良好的任性和強度，冷拉后表面比較好冷拉原理，

　　Party cold-drawn tube do want to buy the material of baosteel, because baosteel level after inspection of materials processing, steel is better, the density of cold drawn after heating, facilitate lines, to cold drawn steel under the interesting and produce plastic deformation, thus improving the yield strength, this process is called cold drawn to strengthen, the square tube is generally used in demanding product components have good capricious and strength, After cold drawing, the surface is better.

　　方管的性能指數分析-硬度硬度是衡量金屬材料軟硬程度的指針，目前生產中測定硬度常用的是硬度法，根據被程度來測定其硬度值，凹模圓角凹模圓角與應力大小和分布有很大的關系，圓角半徑大，壓邊圈壓料面積不足，輕易產生失穩皺。

　　Square tube performance index analysis - the degree of hardness hardness is a measure of hard and soft metal materials pointer, determination of hardness hardness method is commonly used in current production, depending on the degree is to determine the hardness value, die die fillet corner has a lot to do with stress size and distribution, large radius, pressure to coil material area is insufficient, instability of wrinkle easily.

　　而假如圓角太小，材料在變形過程中進進凹模的阻力就會增加，材料不易向內活動和轉移，從而增加了傳力區的大拉應力，可能導致拉裂。所有的無縫方管要進行力學性能測試，力學性能測試主要分兩類，一類是拉伸試驗，一類是硬度試驗。

　　If the fillet is too small, the resistance of the material into the concave die will increase in the process of deformation, and the material is not easy to move inward and transfer, thereby increasing the tensile stress of the force transmission area, which may lead to cracking. All seamless square tubes should be tested for mechanical properties, which can be divided into two categories: tensile test and hardness test.

　　在貯存濟南方管的時候，首要需求挑選合適的場所，我們需求思考許多外界要素，鋼管的腐蝕性等等，所以場所定要是清洗潔凈的，枯燥通風，有害氣體呈現的地方，方管都不能呈現，鍍鋅管雜草等雜物要及時清除，要保持鋼材的外表面潔凈，脆性問題及相關因素假如庫有酸堿鹽等容易與鋼管發生反響，使鋼管腐蝕，所以盡量能夠切割開來，假如關于那些較高的金屬品，能夠思考放進庫非常好的保留，依據地理條件。

　　In jinan, storage of square tube, priority for selecting suitable sites, we need think about many external factors, corrosion of steel pipe and so on, so place if wash clean, dry and ventilated, harmful gas present, square tube are not present, galvanized pipe weeds and other debris to keep clear of in time, to keep the steel surface is clean, Brittleness problems and related factors if there is acid, alkali and salt in the warehouse, it is easy to react with the steel pipe and make the steel pipe corroded, so it can be cut as far as possible. If there are higher metals, it can be considered to put them into the warehouse and retain them very well according to geographical conditions.

　　另外，方管生產工藝流程包括這幾道工序：管坯--切斷--加熱--穿孔--軋管--定(減)徑--矯直--切頭尾--檢驗--包裝--入庫。相關詳細內容就來http://www.dyhongsenfg.com我們網站咨詢吧。

　　In addition, the square tube production process including the working procedure: tube billet, cutting, heating, piercing, rolling tube set - (minus) diameter, straightening, cutting head to tail, inspection, packaging, warehousing. For more information, please visit http://www.dyhongsenfg.com.