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    冷拔钢管理论公式及技术标准及力学性能

    2018-10-24 12:38:51 无锡盛发地坪科技有限公司 阅读

    冷拔钢管是用于机械结构、液压设备的尺寸精度高和表面光洁度好的精密冷拔冷拔无缝钢管。相较之钢质、水泥等管材产品,PE管材性能优势更加突出,所以目前在我国在给排水工程项目中,已经开展了普及和广泛的应用。给排水工程中,PE管材受到自然环境和工程特点的影响,其应用过程需要不断优化与改善,对此,文章展开了PE管在北方沿海地区市政给排水工程中的应用分析。选用精密冷拔无缝钢管制造机械结构或液压设备等,可以大大节约机械加工工时,提高材料利用率,同时有利于提高产品质量。

    Cold-drawn steel pipe is a precision cold-drawn seamless pipe with high dimensional accuracy and good surface finish for mechanical structure and hydraulic equipment. Compared with steel, cement and other pipe products, PE pipe performance advantages are more prominent, so at present in China's water supply and drainage projects, has been widely used and widely used. In water supply and drainage engineering, PE pipe is affected by the natural environment and engineering characteristics, and its application process needs to be optimized and improved continuously. In this paper, the application of PE pipe in municipal water supply and drainage engineering in northern coastal areas is analyzed. Selection of precise seamless pipe manufacturing mechanical structure or hydraulic equipment, etc., can greatly save machining time, improve material utilization, while improving product quality.

    若欲获得尺寸更小和质量更好的冷拔无缝钢管,必须采用冷轧、冷拔或者两者联合的方法。冷轧通常在二辊式轧机上进行,钢管在变断面圆孔槽和不动的锥形顶头所组成的环形孔型中轧制。冷拔通常在0.5~100T的单链式或双链式冷拔机上进行。

    If you want to get smaller size and better quality seamless pipe, must use cold rolling, cold drawing or combination of the two methods. Cold rolling is usually carried out on a two-high mill. The steel pipe is rolled in a ring pass consisting of a variable section circular groove and a stationary conical plug. Cold drawing is usually carried out on a single chain or double chain cold drawing machine of 0.5 ~ 100T.

    优质碳素结构钢冷拨冷拔无缝钢管,主要用10、20号钢制造,除保证化学成分和机械性能外要做水压试验,卷边、扩口、压扁等试验。

    High quality carbon structural steel cold-drawn seamless pipes are mainly made of No. 10 and No. 20 steel. In addition to ensuring chemical composition and mechanical properties, hydrostatic tests, edge rolling, flattening and other tests are required.

    冷拔钢管的常用规格:12mm 14mm 18mm 20 mm 25mm 28mm 30mm 32mm 35mm 38mm 40mm 42mm 52mm

    Commonly used specifications for cold drawn steel pipes: 12mm 14mm 18mm 20 mm 25mm 28mm 30mm 32mm 35mm 38mm 40mm 38mm

    冷拔钢管理论计算公式

    Theoretical formula for cold drawn steel tube

    钢管重量计算公式:(外径-壁厚)*壁厚*0.02466=kg/米(每米的重量)

    Steel tube weight formula: (outer diameter wall thickness) * wall thickness *0.02466=kg/ m (weight per meter)

    冷拔钢管尺寸及允许偏差

    Dimensions and allowable deviation of cold drawn steel tubes

    偏差等级

    Deviation grade

    标准化外径允许偏差

    Allowable deviation of standardized outside diameter

    D1

    D1

    1.5%,最小0.75 mm

    1.5%, minimum 0.75 mm

    D2

    D2

    1.0%。最小0.50 mm

    1%. Minimum 0.50 mm

    D3

    D3

    0.75%.最小0.30 mm

    0.75%. minimum 0.30 mm

    D4

    D4

    0.50%。最小0.10 mm

    0.50%. Minimum 0.10 mm

    冷拔钢管力学性能

    Mechanical properties of cold drawn steel tube

    钢材力学性能是保证钢材最终使用性能(机械性能)的重要指标,它取决于钢的化学成分和热处理制度。在钢管标准中,根据不同的使用要求,规定了中国钢管信息港相关报道:拉伸性能(抗拉强度、屈服强度或屈服点、伸长率)以及硬度、韧性指标,还有用户要求的高、低温性能等。

    Mechanical properties of steel is an important index to ensure the ultimate performance of steel, which depends on the chemical composition of steel and heat treatment system. In the steel pipe standard, according to different application requirements, the relevant reports of China Steel Pipe Information Port are stipulated: tensile properties (tensile strength, yield strength or yield point, elongation), hardness and toughness, as well as high and low temperature properties required by users.



    标签:   冷拔钢管 冷拔异型钢管 冷拔无缝钢管 环氧地坪 地坪
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