piercer

1. The H13 steel piercer point alloyed by Re-Al is studied.: 对H 13钢穿孔顶头进行了稀土铝合金化研究。

2. The piercing principle of 2-roll cross-rolling piercer and its application range are discussed.: 论述了二辊斜轧锥形辊穿孔机的穿孔原理及其应用范围。

3. The mighty mt cook, known as the " cloud piercer ", is the highest peak in australasia at 3755m.: 巍峨的库克山，被誉为「云霄之钻」，是澳大拉西亚地区最高的山峰，高3755米。

4. It can be used not only for pass design and off line analysis but also for guiding in the adjustment of piercer.: 该系统不仅可用于斜轧穿孔工具设计和离线分析，还可用于指导穿孔机操作。

5. Moreover, consulting first an expert piercer or a personal doctor is always reasonable as every one is different.: 此外，第一次专家咨询穿孔或私人医生总是合理，因为每个人是不同的。

6. The computation of the roll opening is the basis of tool design and parameters adjustment of skew rolling piercer.: 斜轧穿孔机轧辊开度计算是轧机工具设计和调整参数计算的基础。

7. A reputable piercer will ask for parental consent before allowing someone under the age of 18 years to have a piercing.: 信誉锥子将要求父母同意之前，允许有人在18岁以下的有一个穿孔。

8. It is pointed out that like the barrel type piercer process, the control of the cone type piercer roll speed is also very important.: 指出了锥形辊穿孔机也要和桶形辊穿孔机一样，要重视对穿孔机轧辊转速的控制。

9. Two years' practice shows that the upgraded drum locking device of a piercer can fully meet the requirements of a twice piercing process and is worth wide application.: 经两年多的实际使用证明，改进的穿孔机转鼓器完全能满足二次穿孔工艺要求，具有一定的推广价值。

10. The basic process of three-dimensional parameterized design for the piercer guide board series has been described in this article as well as its necessity and superiority with CAD.: 介绍了穿孔机导板系列三维参数化设计的基本过程，及运用计算机进行导板三维参数化设计的必要性和优越性。

11. 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.: 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。

12. 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.: 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。

13. 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.: 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。

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