SAF2507双相不锈钢阀体的气孔分析

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[1]沈高峰,黄高杨,沈捷美.SAF2507双相不锈钢阀体的气孔分析[J].特种铸造及有色合金,2013,33(08):785-786.

Shen Gaofeng, Huang gaoyang, Shen Jiemei. Gas Holes in Super Duplex Stainless Steel SAF2507 Castings[J]. Special Casting & Nonferrous Alloys, 2013,33(8):785-786.
[1]沈高峰,黄高杨,沈捷美.SAF2507双相不锈钢阀体的气孔分析[J].特种铸造及有色合金,2013,33(08):785-786. DOI： 10.15980/j.tzzz.2013.08.004.

Shen Gaofeng, Huang gaoyang, Shen Jiemei. Gas Holes in Super Duplex Stainless Steel SAF2507 Castings[J]. Special Casting & Nonferrous Alloys, 2013,33(8):785-786. DOI： 10.15980/j.tzzz.2013.08.004.

使用碱酚醛树脂砂生产SAF2507超级双相不锈钢DN1200阀体

会产生大量的气缩孔

无法焊补

从而导致大量报废。通过研究该材质特点及铸造工艺

采用中注式浇注

使用发热冒口

尽量提高液面温度

推迟凝固时间

让钢水内部气体有充分时间排出。采用防止气孔和防止缩孔的工艺消除气缩孔

大大降低了气缩孔废品率

提高了产品质量。

Amounts of gas holes（shrinkage holes）were generated in SAF2507 super duplex stainless steel DN1200 body produced by alkaline phenolic resin sand

resulting in the scrap as a result of not be welded from microstructure porosity.Based on analyzing the material characteristics

through adopting the middle-gating system and the high-performance heat riser to improve the surface temperature to postpone solidification time

the gas holes（porosities） in the valve body can be decreased greatly as a result of the complete exhaustion of gas in the liquid steel

obviously improving the quality of the valve body.

碱酚醛树脂气缩孔砂型排气系统

Alkali Phenolic ResinGas HolesSand Exhaust System

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