发明名称 |
METHOD FOR BUTT WELDING CROSS-LINKED POLYETHYLENE PIPES (PE-X PIPES) |
摘要 |
The invention relates to a method for butt welding cross-linked polyethylene pipes in order to use these pipes in industrial and underground pipeline construction. The pipe faces are spatially melted on using a serrated heating element at a temperature >420° C. but <450° C. with a warming up time of greater than sixty seconds such that enlarged and serrated pipe faces are produced whose integral melt layers join during the joining process while under a welding pressure of 0.1 to 0.4 N/mm2. |
申请公布号 |
EP1144179(B1) |
申请公布日期 |
2003.01.08 |
申请号 |
EP19990966850 |
申请日期 |
1999.12.04 |
申请人 |
KUNSTSTOFF-ZENTRUM IN LEIPZIG GGMBH |
发明人 |
TOBIAS, WOLFGANG;BERNSTEIN, GUNTER |
分类号 |
B29C65/18;B29C65/20 |
主分类号 |
B29C65/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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