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内蒙古自治区呼和浩特市回民区攸桾板镇</p> </ul> </div> <div class="clear"></div> </div> <div class="right"> <div class="right_t"><h2>新闻资讯</h2><h3> 您现在的位置:<a href="/">首页</a> > <a href="/9xe2sn/news/">新闻信息</a> > 详细内容 </h3></div> <div class="right_con"> <div class="news_article"> <h1>钢结构加工成形中变形问题处理方法</h1> <h2>发@һ֮N时间 : 2019-02-23</h2> <h2>来源:<a href='/9xe2sn/news/78.html'>/news/78.html</a> </h2> <ul> <p> <span style="font-size:16px;"><strong><a href="/9xe2sn/gjg/" target="_blank">钢结?/a>加工</strong>成形?/span><span style="font-size:16px;">出现变形的原?/span> </p> <p> <span style="font-size:16px;"><br /> </span> </p> <p> <span style="font-size:16px;">(1)复杂钢结构加工中出现的变形,主要有热变形、冷变形戦ء相互关联的构件不能组装成一体?/span> </p> <p> <span style="font-size:16px;"><br /> </span> </p> <p> <span style="font-size:16px;">(2)热变形常是因焊榷 工艺不造成的;冷变形是体积大、刚性差产生的; fֵдﶬĴL相互关联构件无法组装成一体,与放样划线不准、组装顺序错误或叡形有关?/span> </p> <p> <span style="font-size:16px;"><br /> </span> </p> <p style="text-align:center;"> <span style="font-size:16px;"><img src="/uploads/image/20190223/20190223101302_8680.jpg" alt="钢结? width="420" height="278" title="钢结? align="" /><br /> </span> </p> <p style="text-align:center;"> <span style="font-size:16px;"><br /> </span> </p> <p> <span style="font-size:16px;">减ݰ焊接热变形的ơ操作方法</span> </p> <p> <span style="font-size:16px;"><br /> </span> </p> <p> <span style="font-size:16px;">(1)夹具固定法:用刚性很大的夹具夹紧组合焊件,用强制务控制变形,然后进行焊接,訏种方法称夹具固定法?/span> </p> <p> <span style="font-size:16px;"><br /> </span> </p> <p> <span style="font-size:16px;">焊接时焊件内部产生׌˲ɱĚ膨胀ɸ֮Л和收缩力,被夹具的作用力所限制,}明显地减少变形。但此种߀Ǜ]гFɵ۹法焊件内部存在较的内应力,对要求焊件内应务较小的构件A不宜采用此法?/span> </p> <p> <span style="font-size:16px;"><br /> </span> </p> <p> <span style="font-size:16px;">(2)反变形法:构件在焊接前,应根据被焊金居e构件情况判断。在焊后冷却时,发生变形的方ˑ和收缩量,将焊件预先向相反方向弯曲或斜置,焊接后由于本躳Bһ֮收缩变形,恰好恢复到预定的形状位置。即可达到防止焊接变形与减少焊接应力的目的?/span> </p> <p> <span style="font-size:16px;"><br /> </span> </p> <p> <span style="font-size:16px;">(3)采є定位控制法:҂hh件在焊接前,DrЦ许多焊点将焊接部位或@ź˿ښ四周定位,还可在焊缝两侧压以ⱬW重物,这种方法称定位控制法?/span> </p> <p> <span style="font-size:16px;"><br /> </span> </p> <p> <span style="font-size:16px;">(4)焊接顺序法:正确安排焊接顺序,是防止焊接变形的有效方法。焊接变形的规律是第一道焊缝引ゃھŌ的变形最大,每道焊缝引起的变形量,一ŵһ般不能相互抵消,最后的叨u形方向,总和最先焊的焊缝引起的变形方向相一致?/span> </p> <p> <span style="font-size:16px;"><br /> </span> </p> <p style="text-align:center;"> <span style="font-size:16px;"><img src="/uploads/image/20190223/20190223101320_5433.jpg" alt="钢结构加? width="400" height="277" title="钢结构加? align="" /><br /> </span> </p> <p style="text-align:center;"> <span style="font-size:16px;"><br /> </span> </p> <p style="text-align:center;"> <span style="font-size:16px;"><br /> </span> </p> <p style="text-align:center;"> <span style="font-size:16px;"><br /> </span> </p> <p style="text-align:center;"> <span style="font-size:16px;"><br /> </span> </p> </ul> <div class="n_article_next"><div>上一?<a href="/9xe2sn/news/79.html">钢结构һꇿֲ工中的预埋螺栓技?/a></div> <div>下一?<a href="/9xe2sn/news/77.html">钢结构厂房降温的三种方法</a></div> </div> <div class="tag">相关Ͷٴw标签?a 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