同时介绍了国外管坯折断机的应用情况。
Also introduced is the application of tube blank cutting machines overseas.
介绍了连铸机浇铸管坯之前钢水的处理技术。
The refining technologies of liquid steel before it is poured into tube bloom on continuous casting machine are introduced.
确定了缩口次数并计算了管坯尺寸和缩口力。
The pipe blank dimensions and the necking force were calculated. The structure of necking die for the flame pipe was introduced.
管坯的表面裂纹会对无缝钢管的质量产生极坏的影响。
Any surface cracking of the bloom will cause ser - ious quality problem.
世界钢管市场并不景气。水平连铸的管坯生产技术已经成熟。
The world steel pipe market does not show a good situation but the horizontal continuous casting technology for tube billets has been successfully developed.
世界钢管市场并不景气。水平连铸的管坯生产技术已经成熟。
The world, steel pipe market does not show a good situation but the the horizontal continuous casting technology for tube billets has been successfully developed.
介绍了高强度管坯的生产流程及锻后热处理、最终热处理工艺。
The production flow, after forged heat treatment and final heat treatment process for the high strength tube blank have been described in this article.
空心管坯连铸技术被认为是管材生产更深层次的近终形制造技术。
Continuous casting of hollow tube is considered as a profound near net shape technology for pipe production.
分析了小型管坯一次穿孔成型工艺的可行性、产品质量和生产效益。
The possibility of one pass process and its product quality and economy for small billets are analysed.
通过这些措施的实施，可以提高管坯的加热质量和减少燃料的消耗。
Through the measures above, better heating quality and less gas consumption were obtained.
然后输送管道把这些加热过的管坯传到包括几个阶段的复杂的生产线上。
Then the pipeline moves the heated workpiece to a complex of rolling that consists of several stages.
采用上述方法可显著扩大用管坯制造零件的品种，并可提高制品的质量。
The above method can expand variety of the parts manufactured by tube preform. Part quality also can be improved.
管材内压液力成形过程中，管坯在内压与轴向压力的共同作用下发生变形。
In the process of tube hydro forming, the tube changes its shape under combined internal pressure and axial compressive load.
在相同的压弯弯曲角度下，增大凹模支点的间距可以减小管坯截面的畸变。
At the same press bending Angle, the cross section distortion of the tubes decreases by increasing the distance between the die fulcrums.
本发明涉及一种传送装置，具体的说是一种用于管坯拉伸过程中的传送装置。
The invention relates to a conveying device, in particular to a conveying device applied in the tube blank stretching process.
综述了管坯钢表面裂纹研究的进展，分析了影响管坯钢表面裂纹的主要因素。
The progress in research of crack for tube bloom is overiewed , The main factors affecting surface crack of tube bloom are analyzed.
本文着重分析了衡阳钢管厂20钢水平连铸管坯的表面质量及现场控制方法。
This paper analysed emphatically the surface qualities of HCC round billets of grade 20 made in Hengyang Steel Tube Plant and the control methods of it.
研究了镍基合金冷变形管坯退火裂纹与加热温度的关系和退火裂纹产生的原因。
The relationship between annealing cracks and heating temperatures of Ni-based alloy cold-formed billets and the causes of annealing crack occurrence are studied.
在现代的直缝焊管生产中，轧辊与管坯间的接触压力分布是一个非常重要的参数。
During the modern longitudinal seam welded pipe production, the contacting pressure distribution between the roller and pipe is a very important parameter.
本文根据理论分析和实际测定推导出管坯壁厚计算公式及确定管坯壁厚的计算方法。
Formulas for calculating the shell wall thick-ness are derived and a method for calculating the wall thickness is also obtained based on related theoretical analyses and actual measuring results.
针对某公司环形加热炉的实际生产情况，建立了管坯加热过程的三维传热数学模型。
Considering practical ring shaped heating furnace of a certain company, a threedimensional heat transfer mathematic model for tube rounds heating process was established.
结果表明：与传统连铸方法相比，施加电磁场后空心管坯的质量得到了明显的改善。
The results show that comparing with the conventional continuous cast one, the electromagnetic cast has obviously improved billet quality.
用塔形试样对比研究了水平连铸管坯和轧制管坯穿孔时顶头前压缩率对孔腔形成的影响。
The effect by pre-plug compression rate on formation of the cavity was investigated in a comparative method with step-down test samples of HCC billet and rolled bloom respectively.
顶头是斜轧穿孔主要的变形工具之一，其作用是将实心管坯穿轧成一定壁厚的空心毛管。
Plug is one of the key deformation tools in cross piercing. Its function is turning a solid bar into a hollow bloom.
计算结果表明，管坯表面热流密度沿周向分布的不均匀性造成了管坯温度沿周向分布不均。
The results show that the distributions of the surface heat fl ow density and temperature around tube billets are relative.
水平连铸这道工序包括四个过程：电解铜板的熔化，铜液的凝固，管坯的牵引和管坯的切割。
Horizontal continuous casting procedure includes four processes: electrolysis copper plate melting, copper fluid solidification, the drawing and cutting of tube billet.
胀形生产实践表明，加载路径的选择和管坯的成形极限对管件成形及成形质量有着重要影响。
The practice of tube bulge shows that the choice of loading route and forming limit of tube is important to the shape and quality of produce.
传统的TP2铜管生产方法——挤压法是由连铸实心铸坯挤压成管坯，再经过拉拔加工成管材。
The extrusion process is a traditional method for the TP2 copper tubes, in which continuous casting solid billet is extruded to hollow tube billet firstly and then drawn to tube.
结果表明：管坯裂纹是因热轧宽钢带基材中存在大量聚集分布的稀土硫氧化物和氧化铝夹杂所致。
The results show that these cracks are caused by the inclusions of rare earth sulphur oxides and alumina distributing in mass in base steel for hot rolled wide strips.
从穿孔机的调整，管坯的加热质量等方面分析了中轧卡产生的原因，并提出了防止中轧卡的措施。
The causes of the mid-seizing in piercing are analysed regarding to the aspects such as mill adjustment and billet heating quality, and the measures to avoid the mid-seizing are proposed.
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