【摘要】 研究了用立体光刻快速原形作为模的精密铸造的型壳制造工艺。结果表明,用石英粉100、三聚磷酸钠3、锂基膨润土2、PVB溶液7、微量的JFC和适量的甲醇,充分搅拌,制得耐火浆料。在模的表面浸涂耐火浆料并撒石英砂数次,直至结成5~10 mm厚的型壳。在35℃烘箱内烘干8~10 h,300℃装炉,以300℃/h升温到950℃,保温30 min,即得浇注所需型壳。将石英粉换为其它耐火粉料并对配比略加调整,即可制得其它耐火粉料的型壳,用于其它合金的铸造。更多还原

【Abstract】 Preparation of moulding shell used Stereolithography Apparatus prototypes as the moulds was discussed.The experimental results indicates that mixture of silica powder 100,Na5P3O1 3,Li bentonite 2,20%PVB solution 7,tiny JFC and appropriate amount methanol could served as the refractory slurry,the refractory slurry was coated and silica grains was scattered on the prototypes for several times until 5～10 mm thickness of moulding shell,then baked at 35 ℃ for 8 to 10 hr.,come into furnace for baking in 300 ℃,and the temperature of furnace was increased to 950 ℃ by 300 ℃/h,kept for 30 min and cool off,the moulding shell was ready.silica powders was replaced by other refractory,and formula was readjusted slightly,the mixtures could use for many alloys castings.更多还原