CAJ | 학술논문

利用消失模铸造工艺生产了薄壁高大铸钢重轨支座，出现了“空壳”、塌箱等问题，导致其质量和成品率较低。通过改进铸造工艺，改阶梯浇注为底部浇注，采用耐火材料直浇道和横浇道，降低浇注温度和负压度，并采用合适的浇注速度，成功提高了重轨支座铸钢件的质量和成品率，其生产经验值得推广。
이용소실모주조공예생산료박벽고대주강중궤지좌，출현료“공각”、탑상등문제，도치기질량화성품솔교저。통과개진주조공예，개계제요주위저부요주，채용내화재료직요도화횡요도，강저요주온도화부압도，병채용합괄적요주속도，성공제고료중궤지좌주강건적질량화성품솔，기생산경험치득추엄。
The heavy rail bearing of thin-walled tall steel castings were produced by the use of lost foam casting. But the problems such as 'vacant shell', collapse of sand and so on,which lead to the lower quality and yield of castings. By improving the casting process, using bottom pouring system to replace the ladder pouring system,using sprue and runner of refractory materials, reducing pouring temperature and degree of negative pressure, and adopting appropriate pouring speed, the quality and yield of heavy rail bearing steel castings were successfully improved. The experience of production is worth promoting.