Sunday, April 13, 2025
Saturday, October 19, 2024
Thursday, April 24, 2025
Thursday, July 20, 2023
Wednesday, January 25, 2023
Thursday, April 24, 2025
Tuesday, October 8, 2024
问题:流动性是指金属在型腔内的流动能力,是合金的重要铸造性能之一。...
Saturday, June 1, 2024
Sunday, September 15, 2024
问题:劈箱造型是将三箱造型的箱圈沿着水平方向劈成几个部分。...
Monday, June 2, 2025
问题:长度较长的圆柱体砂芯,常采用()芯盒造芯A、整体式B、对分式C、脱落式...
Sunday, July 28, 2024
Monday, June 2, 2025
Monday, June 2, 2025
Sunday, April 13, 2025
问题:铸铁件高温石墨化退火温度一般为()。A、800~860℃B、860~900℃C、900~960℃D、960~1000℃...
Thursday, July 4, 2024
问题:当铸件高度一定时,壁厚越小,所需补贴厚度()。A、较大B、越小C、不变D、任意改变...
Sunday, April 13, 2025
Saturday, January 27, 2024
Friday, April 11, 2025
Friday, April 11, 2025
问题:插钉前要把铁钉与水润湿一下,以增强钉与砂型的粘结力。...
Sunday, April 13, 2025