然后进入再热炉、减径机和冷却床。
Then there is reheating furnace, reducing mill and cooling table.
钢管空拉减径，伴随着管壁变化。
The change of steel tube wall thickness during sinking is studied.
介绍了三辊减径机宽展孔型的设计方法。
The design method of the groove is presented here in the article.
实验表明，直径缩小量随减径量和模角的增大而增大；
The experiment shows that the magnitude of dia. sinking is increased with the increase of reduction and die entry angle;
文章介绍了张力减径机的几种传动方式，并对其进行了分析与比较。
The paper analyzed and compared some kinds of gearing modeling of stretch-reducing of tubes.
微张力减径机有单独传动(各机架)和集中差速传动两种传动形式。
Two drive types are used for the slight-stretch reducing mill, namely the individual drive (for each individual roll stand) and the centralized differential drive.
简介了钢管定减径时内多边形缺陷产生的原因及其一般的控制方法。
Causes responsible for bore polygonning of steel tube which appears as a defect during sizing and reducing are analyzed and common-used control methods therefor described.
以内缩量为评价标准，分析了这些工艺参数对减径挤压的影响规律。
The influence law of the technological parameters on ironing has been analyzed in accordance with criterion to neck-in.
最后对校正气门发生减径、加工硬化和温升等现象作了初步的探讨。
Finally, the phenomenon of diameter decrement of the alignment valve , the work-harden and the heatingi-up are expeained.
就穿孔工艺、连轧管工艺及定减径工艺等方面的问题提出了商榷意见。
Some Suggestions on piercing processes, continuous rolling processes and sizing or sinking processes are offered.
分析了微张力减径机轧辊位移的产生原因以及对钢管外表面质量的影响。
The paper analyzed the causes of roll displacement on mini-stretch reducing mill and the influences of displacement on external-surface quality of steel pipe.
本发明涉及无缝钢管的制造方法领域，尤其是一种无缝钢管锤击减径工 艺。
The invention relates to the field of seamless steel pipe production methods, in particular to a seamless steel pipe hammering and reducing technology.
文章介绍了炉辊的轴向膨胀量、相对间隙、轴径实际温度及高温氧化减径量。
The paper introduces the axial inflation volume, relative space, temperature of axle neck and high temperature oxidized sizing reduction of rollers.
定、减径机的传动装置的结构简单，易于加工、装配、运输，大大降低成本。
The transmission device for the sizing mill and the reducing mill has simple structure and is easy to be processed, assembled and transported, which reduces cost greatly.
而减径变形中的扭转变形不但使原始缺陷形成螺旋状，同时还进一步扩展了裂纹。
The distortion deformation during diameter reduction not only changes the primary defects (such as hair-line seams) into screwy form, but also enlarges the primary cracks.
根据张力减径过程的变形特点，采用组元建模技术，编写了弹塑性有限元计算程序。
Based on the characteristics of tube stretch-reducing process, the elastic FE calculation program is prepared by means of the constituent element modeling technique.
采用本文推荐的改进的钢管减径速度制度，可较大地降低减径钢管前后的切头损失。
The application of the improved tube reduction speed system recommended in the paper makes it possible to greatly cut down the crop losses of the reduced pipes.
张力减径机的主传动系统是由集中差速传动系统和单独传动系统组成的混合传动系统。
The main drive system of stretch reducer is made with differential and single driving system.
无缝钢管经过三辊定减径机轧制生产工序后，有时会产生弯曲，影响产品质量和深加工。
The product quality and further processing are affected by the curvature of seamless steel pipe caused during rolling through the three-roll size reducing mill.
开发了与钢管减径过程相关的辅助工艺系统，能够用来确定轧辊的速度制度及张力系数等。
A process design system for tube reducing process has been developed to determine the roll speeds and tension coefficients at individual rolling stands.
介绍了钢管张力减径机上所使用的硬质合金轧辊的材料、结构、孔型的加工和安装及冷却。
Materials, structure, roll pass machining, installation and cooling of cemented carbide roll rings in stretch reducing mill are introduced.
介绍了用焊接和热减径工艺生产钢管的ERW/SRM 生产线及其主要的工艺设备特点。
The paper gives a description to the electric resistance welding and stretch reducing mill process (ERW/SRM) in steel pipe production and the features of its main equipments.
钢管在减径过程中，减径量一定时，影响其增壁量的主要因素是钢管的轧制温度和张力系数等。
During the process of reducing, in case of constant diameter reduction, the major elements responsible for tube wall increase are the rolling temperature and the stretch factor, etc.
管采用长的去除内毛刺的电焊管或无缝管作为坯管，经感应加热后进行张力减径，然后热卷曲成卷。
The PIC tube is made of long, internally deburred electrical weld tube or seamless steel tube by means of induction heating, stretch reducing and hot coiling.
提出了一种集中传动张力减径机传动电机转数计算方法，对比分析了一般理论计算与实际应用的差别。
A calculation method for motor revolution of integrated differential transmission of tension reducing mill was put forward.
焊管经张力减径机处理后有人称之为“焊管无缝化”，这种焊管与无缝钢管在一些质量指标上仍存在差异。
After welded pipes are treated by reducing tension mills known as "welded pipe seamless process". There are still some differences between welded pipe and seamless pipe in quality index.
介绍了英国钢铁公司科比厂在焊接钢管减径前，采用一台由微处理器控制的10MW感应加热炉进行温度补偿。
The paper introduced the process of applying 10mw induction heating furnace to compensate temperature of welded tube before reducing mill, which is controlled by a micro-processor.
本文将金属热变形过程的组织演化模型引入有限元程序，利用有限元计算结果对钢管减径过程中的组织演化过程进行了模拟。
The microstructural evolution model of the material during hot forming process is introduced into the finite element program to simulate the microstructural evolution during tube reducing process.
分析了钢管在张力减径过程中产生管端增厚的原因，阐述了切头端控制(c.e.c)的原理、方法，并就其关键问题进行了探讨。
The reason of thickness of pipe end increasing in tension reducing is analyzed. The principle and method of cutting end control (CEC) are introduced. The key problems are discussed.
分析了钢管在张力减径过程中产生管端增厚的原因，阐述了切头端控制(c.e.c)的原理、方法，并就其关键问题进行了探讨。
The reason of thickness of pipe end increasing in tension reducing is analyzed. The principle and method of cutting end control (CEC) are introduced. The key problems are discussed.
应用推荐