对H 13钢穿孔顶头进行了稀土铝合金化研究。
本文介绍了精密热模锻穿孔顶头的生产工艺及工艺特点。
The production process and its features of piercing plug by precision hot-die-forging are detailed.
镶嵌式钼合金穿孔顶头尤其适用于低合金钢及合金高压锅炉管的穿孔。
The Mo alloy inlaid piercing plug is especially suitable for piercing of low alloy pipes and high pressure boiler pipes.
详细地分析了穿孔顶头工作锥起皱的原因，提出了抑制顶头工作锥起皱的工艺措施。
The causes on wrinkle occurrence on the working cone of piercing plug are analysed in detail, and the measures to prevent wrinkle occurrence are put forward.
研究了穿孔顶头鼻部压堆戴帽和熔化的失效机制，影响因素，提出了延长顶头使用寿命的工艺措施。
The paper studies squeezed cap of piercing plugs nose, failure mechanism of melting, influence factor and the process measure of lengthening the service life of plug.
概述了穿孔顶头表面氧化膜的形成、结构、性质、作用，在穿孔过程中的变化及其对顶头使用寿命的影响。
This review focuses on various aspects of piercing plug surface oxide film, including formation, compose, property, effect, transformation in the piercing course and the influence of plug's life.
提出采用在顶头上喷涂等离子涂层的方法来提高穿孔顶头表面性能，从而提高其使用寿命，降低生产成本。
It is proposed to get the piercing plug sprayed with a plasma coating in a bid to enhance its surface properties, and thus prolong its service life, and cut down the operation costs as well.
对穿无缝钢管热穿孔顶头的失效机制和使用状况进行了分析研究，认为穿孔顶头的失效形式主要表现为顶头塌鼻、粘钢、开裂。
The failure mechanism and service status quo of hot piercer point in seamless steel tube were analyzed and its failure was mainly caused by piercer point collapsing nose, sticking steel and cracking.
穿孔顶头是无缝钢管生产中最重要的模具之一，文章通过分析穿孔机顶头的失效形式，并从顶头外形、材质、表面氧化等方面探索提高顶头使用寿命的方法。
The failure mechanism and service sttaus quo of hot piercer point in seamless steel tube were analyzed and its failure was mainly caused by piercer point collapsing nose, sticking steel and cracking.
定量分析了穿孔轧制力和顶头轴向力对毛管壁厚及其横向均匀性的影响。
The influences of the separating force and axial force of the piercing point bar on the wall thickness of the shell pierced, and on its lateral uniformity are analyzed quantitatively.
无缝钢管的穿孔过程是一个热加工过程，顶头的温度分布对于其寿命至关重要。
The piercing process of seamless steel tube is a hot working process, the distribution of plug temperature is very important to its service life.
采用三种不同穿轧锥形状的顶头，通过二次穿孔试验研究了毛管壁厚变化。
Tests are made with three different piercing plug cone shapes to identify shell gauge changes during secondary piercing process.
在斜轧穿孔过程中，由于轧件旋进力克服不了顶头的阻力，因此轧制厚壁管或高合金钢管时在穿孔后期造成后轧卡。
In the cross piercing process, as the piercing precession power can not overcome the resistance force, it will lead to rear-jamming when rolling thick-wall tubes or high alloy tubes.
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.
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.
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