The unit pressure in backward extruding hollow billet has been calculated by the slip line method and the upper bound method.

1、

Study on soft-contact electromagnetic continuous casting of hollow billet

空心管坯软接触电磁连铸技术研究

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2、

By controlling the cooling speed of pierced billet after hot piercing, the DP-structure F+ B could be obtained. The times of annealing the process of cold, drawing could be decreased by 50%.

控制热穿孔后荒管的冷却速度可获得F＋B的双相组织，并减少冷拔过程中50%的退火次数。

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3、

Hot-shear blade is the main tool which is used to cut hot rolling steel billet. Its performance directly affects the quality of continuous metal casting billet.

热剪刃是钢厂用来切断热轧钢坯的主要工具，其性能直接影响到连铸钢坯的质量。

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4、

Significant improvements in output capacity and in conversion costs are achieved when rolling a billet of infinite length obtained.

当轧制一根由许多钢坯焊成的无限长钢坯时，就会大大地提高产量、降低成本。

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5、

Simulation Experiment of Rolling Square Billet with Liquid Core Using Four Stand Continuous Rolling Mill

采用四机架连轧带液芯方坯的模拟实验

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6、

The forming limit of forward extrusion and cross rolling tube billet

管坯正挤&横轧的成形极限

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7、

In hot-rolled production line, rolling billet heating softened, the roller into the mill, finally rolling into the size of user requirements.

在热轧生产线上，轧坯加热变软，被辊道送入轧机，最后轧成用户要求的尺寸。

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8、

This paper presents the application of photoelectric switches to the on line measurement of the length of a hot rolling billet.

本文介绍了光电开关在热轧钢坯长度在线检测中的应用。

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9、

Lateral spreading model of rolling billet in oval pass

方坯在椭圆孔型中轧制的宽展模型

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10、

Study on Model for Rebuilding the Temperature and the Surface Heat Flux of the Billet Steel in an Industrial Furnace

工业炉内钢坯温度及表面热流重建模型研究

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11、

Purity problem of round billet steel was solved by optimizing parameter of tundish.

天津钢管公司对电弧炉和连铸机进行了高效化改造，通过优化中间包参数，解决了高拉速下连铸圆坯钢液的纯净度问题；

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12、

Analysis and Countermeasure of Plate Hook Bend Caused by Billet Steel Skid Mark

钢坯滑道黑印造成钢板镰刀弯问题的分析与对策

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13、

Cause analysis for cracks in 20# hot rolled pipe billet steel and improving measures

20热轧管坯用钢裂纹成因分析及改进措施

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14、

Application of static soft reduction technology on high carbon billet caster

静态轻压下技术在高碳连铸方坯生产中的应用

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15、

Automation System& Control Technology of High Efficient Billet Caster

高效方坯连铸机自动化系统及控制技术

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16、

The quality check mode of No.4 billet caster has been introduced, and the innovative approaches for problems existing in the check have been put forward.

介绍了4号方坯连铸机铸坯质量检验的模式，并对检验过程中存在问题提出改进措施。

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17、

Research and Development of Automatic Pouring Control System for the Billet Caster

方坯连铸机自动开浇控制系统的研究与开发

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18、

Cavity is an important part of the continuous extrusion machine, it has contact with extrusion wheel, billet and mold, temperature distribution is under complex conditions which directly affects the production efficiency and the quality of the products.

连续挤压机腔体是连续挤压机的重要组成部分，它与挤压轮、坯料、模具均有接触，工况条件下温度分布变化复杂，直接影响连续挤压生产的效率和产品质量。

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19、

With the increase of the extrusion speed, billet temperature and die temperature was gradually increased. The highest temperature was located in bearing export while the flow dead zone located in diversion hole of die and the stress of bearing have sharp risen.

随着挤压速度的增加，坯料的温度和模具的温度逐渐上升，温度最高的地方在出口工作带上，模具的导流孔的圆角部分存在流动死区，工作带的应力急剧升高。

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20、

By increasing the extrusion speed, billet can be deformed into tube which meets the requirements in a short time at high temperature.

通过提高挤压速度，可以使高温下的坯料在短时间内完成变形，从而获得满足要求的管坯。

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