本文選題：大型鑄鋼件 + 縮孔　； 參考：《機(jī)械工程學(xué)報(bào)》2017年06期

【摘要】：特大型旋回破碎機(jī)下架體鑄件生產(chǎn)中產(chǎn)生大量的縮孔縮松缺陷,無法滿足質(zhì)量要求。經(jīng)研究認(rèn)為,該鑄件產(chǎn)生的縮孔缺陷主要由鑄件的內(nèi)圈冒口類型、內(nèi)圈和外圈冒口是否添加補(bǔ)貼及補(bǔ)貼類型、澆注溫度等因素決定。采用Taguchi試驗(yàn)設(shè)計(jì)(Design of experiment,DOE)方法,以鑄件縮孔體積最小和工藝出品率最高作為試驗(yàn)指標(biāo),以內(nèi)圈冒口類型、內(nèi)圈補(bǔ)貼、外圈補(bǔ)貼和澆注溫度作為影響因子,設(shè)計(jì)L_9(3~4)正交試驗(yàn)方案,通過ProCAST軟件對(duì)9組試驗(yàn)方案進(jìn)行模擬并分析結(jié)果,獲得了該鑄件的最優(yōu)鑄造工藝為內(nèi)圈用4個(gè)圓柱形發(fā)熱冒口補(bǔ)縮、內(nèi)圈和外圈均添加補(bǔ)貼、在1 560℃澆注。實(shí)際澆注驗(yàn)證結(jié)果表明,采用DOE法對(duì)該大型鑄鋼件的鑄造工藝優(yōu)化在最大程度上減少了縮孔縮松的產(chǎn)生,同時(shí)也提高了鑄造工藝出品率。
[Abstract]:A large number of shrinkage defects occurred in the production of super large scale rotary crusher lower frame castings, which can not meet the quality requirements.It is considered that the shrinkage defects of the casting are mainly determined by the type of inner ring riser, whether the inner ring and outer ring riser are subsidized and the type of subsidy, the pouring temperature and so on.Using Taguchi test design of experiment design of design of experiment doe), taking the smallest volume of shrinkage hole and the highest production rate of casting as the test index, the inner ring riser type, inner ring subsidy, outer ring subsidy and pouring temperature as the influence factors, the orthogonal test scheme was designed.Nine groups of test schemes were simulated and analyzed by ProCAST software. The results showed that the optimum casting process was that the inner ring was fed with four cylindrical heating risers, the inner ring and outer ring were subsidized and poured at 1 560 鈩，

本文編號(hào)：1746428