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2020年第08期
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【消失模与V法铸造】消失模铸造微顶管的缺陷分析与控制
发布时间:2020-09-15 文章来源:本站原创
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蒋妹芹

(芜湖新兴铸管有限责任公司铸件事业部)

要:顶管属于薄壁加长管件,其铸造毛坯件对成品质量有很大影响。研究采用消失模铸造工艺在现行国产设备条件下生产微顶管的工艺过程。详细分析了微顶管生产过程中夹渣、缩松等缺陷产生的原因,制定了预防措施,通过设备改造,优化工艺方案,收到良好效果。

关键词:消失模铸造;微顶管;缩松

中图分类号:TG249.6TS914.3+3  文献标志码A

DOI10.15980/j.tzzz.2020.08.015

Defect Analysis and Control of EPC Pipe-jacking

Jiang Meiqin

(Casting Division, Wuhu Emerging Casting Tube Co., Ltd.)

Abstract: Pipe jacking belongs to thinwalled extension pipe, and its casting blank has a great influence on the quality of finished products.The technological process of micro pipe jacking production was described by vacuum EPC with help of the current domestic equipment, and the origination of the defects such as slag inclusion and inclusion in micro pipe jacking during the production process was analyzed in detail. The prevention and control measures were put forward. The process scheme was designed through the equipment upgrading and the optimization of the gating system. By means of continuous improvement and trial production, the satisfied effect could be realized.

Key Words: Lost Foam Casting, Micro Pipe Jacking, Shrinkage Porosities

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