专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

2. 发明公开

EP1728566A1 SEAMLESS PIPE PIERCE-ROLLING PLUG, SEAMLESS PIPE PRODUCING DEVICE AND SEAMLESS PIPE PRODUCING METHOD USING THEM 有权
标题翻译：器具，用于产生无缝钢管及其制造的无缝管此使用的方法
公开(公告)号：EP1728566A1
公开(公告)日：2006-12-06
申请号：EP05720580.9
申请日：2005-03-11
申请人： SUMITOMO METAL INDUSTRIES, LTD.
发明人： YAMAKAWA, Tomio, Sumitomo Metal Industries, Ltd. , SHIMODA, Kazuhiro, Sumitomo Metal Industries, Ltd.
IPC分类号： B21B25/00 , B21B25/06
CPC分类号： B21B25/06 , B21B25/00
摘要： The present invention provides a seamless tube piercing/rolling plug and a seamless tube producing method in which piercing/rolling is performed with an inclined rotary piercing mill while the seamless tube piercing/rolling plug is used as a piercing tool. The seamless tube piercing/rolling plug is used while a front part and a rear part of the split plug are held as an integral plug, at least the front part is made of low alloy steel, and oxide films are formed on surfaces of the front part and rear part. The present invention also provides a seamless tube piercing/rolling apparatus and a seamless tube producing method in which the front part and/or rear part is replaceable in a tube making process line using the seamless tube piercing/rolling apparatus. In the seamless tube piercing/rolling apparatus, the front part and rear part are held as the integral plug, the front part and/or rear part is removably mounted, a mandrel bar holding the plug goes through the rear part, and the mandrel bar is coupled with the front part. It is preferable that a thickness of the oxide film formed in the front part be set to 200 µm or more while the oxide film formed in the front part is thicker than the oxide film formed in the rear part. Even if a hard working material is pierced/rolled, a seam defect and inside surface defects are eliminated, and excellent life-time of plug and excellent plug cost per production quantity can be achieved.
摘要翻译：本发明提供了一种无缝管穿孔/轧制插头和无缝管制造方法，其中，穿孔/轧制进行与上倾斜的旋转穿孔机而无缝管穿孔/轧制插头被用作打孔工具。而前部和分割插头的后部被保持作为整体插头中使用的无缝管穿孔/轧制插头，至少前部由低合金钢，和氧化膜的前面的表面上形成部和后部。本发明因此提供了一无缝管穿孔/轧制装置和无缝管制造方法，其中，所述前部和/或后部部分在使用无缝管穿孔/轧制装置的制管生产线中可替换的。在无缝管穿孔/轧制装置，所述前部和后部保持为一体的插头，前部和/或后部部分可拆卸地安装，一个芯棒保持插头穿过后部，和芯棒耦接的前部。优选做了厚度的薄膜形成在所述前部被设置为200微米或更多而氧化膜形成在所述前部比所述氧化膜形成在后部分更厚的氧化物。即使硬质工作材料被刺穿/轧制，接缝缺陷和表面缺陷内被消除，并且插头的优异的寿命时间和插头每生产量优异的成本就可以实现。

IPRDB

热门服务

关于我们

友情链接

联系方式