绳槽轮过去是用砂型铸造的,质量很差。改用半硬模铸造法,不但保证了质量,而且一个铸型以使用75~80次左右,清理铸件的时间也缩短了90%。 造型时,先把钢圈(图1)套在铝型板中朋的突出部分(参阅图2),再将钢圈四周的 四块角铁焊在砂箱的箱档上,然后在砂箱内均匀地图上一层白坭,先产入约95公厘厚的面砂,再加填砂椿紧。 Rope sheave used to be sand cast, poor quality. Use semi-hard casting method, not only to ensure the quality, and a mold to use about 75 to 80 times, cleaning up the casting time is also shortened by 90%. Modeling, the first steel ring (Figure 1) set in the aluminum plate in the friends of the prominent part (see Figure 2), and then around the steel ring around the four corners of the iron box in the sand box welding, and then in the sand box Evenly map a layer of white sandwiches, first produced about 95 cm thick sand, sand plus fill tight.