The utility model discloses a new type of runner structure for large cast steel pipe castings, which mainly includes gate cup, straight runner, cast-in-place Road, U type bend, inner runner, gate, casting cavity, core, riser and mold. The new device adds U type bend structure in the cast in place, the gate cup is connected with the straight runner and in the straight runner. The end is connected with the runner, and there is a U curve in the cast-in-place road. Due to the effect of gravity in the pouring process, the casting liquid entering into the cast-in-place road has a high flow speed. If the defects such as shrinkage and shrinkage holes are easily formed, the forced casting liquid of the U type bend passes through narrow and narrow bend, and the casting flow is higher. At the other end of the U type bend, the inner runner is connected by the liquid force, the runner is connected with the gate, the gate is connected with the casting cavity, the mold cavity is placed in the middle of the casting cavity, the riser exists at the end of the cavity, and the effect of preventing shrinkage, shrinkage, exhaust and slag gathering is prevented, and the whole casting system is inside the mold.
【技术实现步骤摘要】
一种大型铸钢管铸件的新型浇道结构
本技术装置是属于大型铸造领域的一种针对钢管铸件的新型浇道结构。
技术介绍
大型铸件是重大工程的核心部件,是国家重点大型装备制造业的基础部件,其制造能力是衡量一个国家工业水平的重要标志,改革开放以后,许多大型铸锻件曾长期依赖进口受制于人,这种被动局面严重制约重大工程进展,甚至影响我国经济和国防安全,随着近几年经济的迅猛发展和科技水平的不断提高,先进铸造工艺、铸造材料等不断广泛的应用于大型铸造生产,大型铸铁件研发和应用领域也越来越广泛,然而我国的大型铸造生产技术还不成熟,百吨级以上钢水凝固时间从几十个小时到上百个小时,导致宏观偏析和中心缺陷严重,很难通过后续锻造和热处理消除,吨级铸件厚大断面不同部位的性能差异大,组织均匀化控制难,加工过程应力大,易产生裂纹和变形,其中中心缩孔疏松缺陷也影响大型铸件的质量,大型铸件由于体积较大,耗用铸造液较多,大型铸件的报废给企业带来的经济、人力损失不可估计。
技术实现思路
针对以上问题,本技术在横浇道中增设一种U型弯道结构,可以强制将紊流的铸造液降速,有效避免铸件的缩孔和缩松的出现。本技术装置主要包括浇口杯、直浇道、横浇道、U型弯道、内浇道、浇口、铸件型腔、型芯、冒口和模具,其特征在于:该新型装置除了在横浇道中存在U型弯道结构,其它部位与传统铸造系统一致,浇口杯与直浇道相连,在直浇道末端连接着横浇道,在横浇道中存在U型弯道,U型弯道的另一端连接着内浇道,内浇道连接着浇口,浇口连接着铸件型腔,铸件型腔正中放置着型芯,在型腔的末端存在冒口,整个铸造系统都在模具内部。本技术装置包括如下技术方案:浇口杯与 ...
【技术保护点】
一种大型铸钢管铸件的新型浇道结构,主要包括浇口杯、直浇道、横浇道、U型弯道、内浇道、浇口、铸件型腔、型芯、冒口和模具,其特征在于:该新型装置除了在所述横浇道中存在所述U型弯道结构,其它部位分布一致,所述浇口杯与所述直浇道相连,在所述直浇道末端连接着所述横浇道,在所述横浇道中存在所述U型弯道,所述U型弯道与所述铸件型腔通过所述浇口连接,所述铸件型腔正中放置着所述型芯,在所述型腔的末端存在所述冒口。
【技术特征摘要】
1.一种大型铸钢管铸件的新型浇道结构,主要包括浇口杯、直浇道、横浇道、U型弯道、内浇道、浇口、铸件型腔、型芯、冒口和模具,其特征在于:该新型装置除了在所述横浇道中存在所述U型弯道结构,其它部位分布一致,所述浇口杯与所述直浇道相连,在所述直浇道末端连接着所述横浇道,在所述横浇道中存在所述U型弯道,所述U型弯道与所述铸件型腔通过所述浇口连接,所述铸件型腔正中放置着所述型芯,在所述型腔的末端存在所述冒口。2.根据权利要求1...
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