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float: left; width: 180px; height: 180px;" /><a href="http://"><span style="font-size:36px;">三通機(jī)</span></a></h3> <p class="abstract1" style="line-height: 18pt;"> <span style="font-size:20px;"><span style="font-family: 微軟雅黑, sans-serif; color: windowtext;">三通管熱模拔制成形新工藝</span></span></p> <p class="abstract1" style="line-height: 18pt;"> <span style="font-size:20px;"><span style="font-family: 微軟雅黑, sans-serif; color: windowtext;">分析大口徑三通管傳統(tǒng)加工工藝的缺點(diǎn)和不足的基礎(chǔ)上<span lang="EN-US">,</span>詳細(xì)介紹了三通管熱模拔制成形新工藝<span lang="EN-US">.</span>該工藝是在管坯上開一個(gè)橢圓形預(yù)制孔<span lang="EN-US">,</span>然后用加熱裝置將預(yù)制孔周圍加熱至<span lang="EN-US">1 200</span>℃<span lang="EN-US">,</span>再在立式液壓機(jī)上用熱拔模具直接拉拔成形三通支管<span lang="EN-US">.</span>在奧程機(jī)械設(shè)備有限公司現(xiàn)有設(shè)備的基礎(chǔ)上進(jìn)行了相關(guān)實(shí)驗(yàn)<span lang="EN-US">,</span>結(jié)果表明該新型大口徑三通管熱模拔制工藝能很好地成形出三通管<span lang="EN-US">. </span></span></span></p> <p class="abstract1" style="line-height: 18pt;"> </p> <p class="abstract1" style="line-height: 18pt;"> <span style="font-size:20px;"><span style="font-family: 微軟雅黑, sans-serif; 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