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I孔机。常用的二辊斜蝾I孔工艺Q将圆坯轧成中空的厚壁管(毛细?Q两个蝾辊的轴线与蝾制线形成倾斜角。近q来孔倾角?~2增加?3~17Qɞ孔速度加快Q生产直?50毫米的钢,采用二次I孔减少壁厚度Q开发了d旋{导向盘穿孔、背推穿孔、u向卸料、@环顶焊等新技术,强化了穿孔过E,提高了毛l管质量?/span> </p> <p> <p> <span style="line-height:1.5;font-family:SimSun;font-size:16px;">无缝钢管生讑֤: 自动L机。将厚壁毛细卷成薄壁废。一?~3道次后蝾臛_厚,dg伸率Uؓ1.8~2.2。自20世纪70q代以来Q单孔孔型蝾辊、双机架q蝾机、双槽跟t蝾制和球Ş塞等技术都提高了生产效率,实现了蝾机械化?/span> </p> <p> <span style="line-height:1.5;font-family:SimSun;font-size:16px;">无缝钢管生讑֤: 均整机。结构与I孔机相|均整的目的就是在于可以消除内外进行表面存在缺陷和荒管的椭圆度Q减横向壁厚不均匀。近q研I用三辊均整机Q提高了均整机系l变形量和均整效率?/span> </p> <p> <span style="line-height:1.5;font-family:SimSun;font-size:16px;">无缝钢管</span><span style="line-height:1.5;font-family:SimSun;font-size:16px;">生讑֤: 定径机。由3-12个机架组成,减径机由12-24个机架组成,q原率约?-28%Q在20世纪50q代Q张力减径机同时调整辊速和减径Q用适当的张力来控制壁厚。新型张力减径机一般采用三?8-28机架Q还原率?0%Q壁面还原率?4%Q出口速度?8mm/s。张力降低机两端增厚的缺点,可以通过“头甉|”或微张力降低来消除?/span> </p> <p> <span style="line-height:1.5;font-family:SimSun;font-size:16px;">现在无缝钢管的生产设备还有外?00mm?40mm?50mm?00mm四种自动轧管机,用于生17?26mm钢管。该装置的主要特Ҏ在射孔器上实C要变形,规格变化更加灉|Q生产品U范围更q,׃q箋轧管技术的发展Q没有再建?40 mm以下的机l?/span> </p> <span style="line-height:1.5;font-family:SimSun;font-size:16px;"></span> </p></p></div> <p><div>上一?<a href="267.html">螺旋钢管表面~陷的Ş成有两种可能?/a></div> <div>下一?<a href="265.html">工字钢的cd及特?/a></div> </p> <div class="tag">相关标签Q?/div> </div> <div class="commentdetail"> <div class="title02"> <table border="0" cellpadding="0" cellspacing="0"> <tr> <td valign="top"><h1><span>相关新闻</span></h1></td> </tr> </table> </div> <div class="comment_list"> <ul> <li><a href="/news/271.html">轨道钢如何打?</a></li> <li><a href="/news/270.html">你知道轨道钢是什么材质嘛Q?/a></li> <li><a href="/news/269.html">螺旋钢管截管的方?/a></li> <li><a href="/news/268.html">工字钢的分类应用和型号含?/a></li> </ul> </div> <div class="title02"> <table border="0" cellpadding="0" cellspacing="0"> <tr> <td valign="top"><h1><span>相关产品</span></h1></td> </tr> </table> </div> <div 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