aggregate-to-lime ratio

Point to the serious burn-on defect occurred on the nonmagnetic steel casting surface, a new casting technique was used in which mould-making adopted CO2-cured sodium silicate bonded limestone sand and special sand powder coating.

针对无磁钢铸件严重粘砂的缺陷,采用石灰石砂及特种砂粉涂料相结合的铸造工艺措施,经过大量试验和生产验证,满足了铸造生产的要求,使铸件表面光洁、易清砂,取得了明显的技术经济效果。