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通过对零件的工艺分析,改进了工艺方案,用一副复合模完成4道工序,虽然结构较为复杂,但降低了模具成本,提高了生产效率;并介绍了该复合模的结构特点、设计思路、应注意的问题和装配工艺性。 相似文献
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根据生产实践介绍了一套能够高效生产连接环类薄壁零件的设计制造工艺方案,通过制造工艺试验、零件检测结果及生产应用情况,验证了该方案的可行性及设计制造技巧。 相似文献
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<正> 一、序言 接插件壳体类零件在电子仪表行业中,不仅品种多、数量大,而且几何形状各异,需经冲裁、撕口、打凸、压印、翻边、多次弯曲等各种加工工序合成为一体,且有较高的精度要求。本文根据本厂的设计经验和引 相似文献
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<正> 图1所示底板零件是彩电中的一个零件,由基准平面和空间一平面构成空间斜弯,要求压H字样。材料为宽37±0.3mm,厚0.76±0.04mm的中硬钢带,大批量生产。 相似文献
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T. Yamashita K. Kajita H. Anada S. lkeno S. Tada K. Nakahira 《International Journal of Cast Metals Research》2013,26(4):241-247
In order to improve the quality of aluminium and aluminium alloy ingots for use in plastic forming, a new vertical semi-continuous casting process has been devised, using a heat insulating refractory as the mould. This paper reports the fundamental characteristics of the process and the quality of the ingots that are obtained using 6063 alloy. The inside of the mould is tapered, with the diameter of the upper opening 48 mm and the diameter of lower opening 51 mm. The height of the mould is 42 mm. Under specific conditions, ingots with very smooth surfaces were obtained. When the surface condition and changes in diameter of the ingots were examined in detail, it was found that for specific condition the solidifying interface emerged at the lower end of the mould and solidification then occurred in areas not in contact with the mould surface. Thus ingots with very smooth surfaces were obtained. It was also found that ingot quality was high with fine, uniform structures free from segregation. 相似文献
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德阳深捷科技采用独特的补镀镍基多元合金系列膜层技术,将报废的结晶器修复到原尺寸,修复后结晶器过钢量可以同进口新品相比,并远超出常规镀膜产品。该结晶器修复技术已经在多家钢厂使用,相对镀硬铬结晶器新品,修复的结晶器过钢量可提高50%~100%以上。符合减排节能、资源循环利用的时代要求。 相似文献
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Theoretical and experimental analysis of continuous casting with soft-conta cted mould 总被引:2,自引:0,他引:2
DENG Kang 《中国有色金属学会会刊》2000,10(3)
1 INTRODUCTIONThecontinuouscastingwithsoftcontactedmouldisarecentlydevelopingtechnologyfornearnetshapebilletofsteeland(or)otherheavymetals[1,2].Itiswellknownthatelectromagneticcontinuouscastingwithoutmould(EMC)foraluminumandotherlightmetalshasbeenappliede… 相似文献
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为了获得更好的压铸模具寿命,有必要研究模具损坏的主要原因。模具失效主要是由于裂纹和冲蚀,保证工具钢的耐热性使其具有良好的高温强度,高温韧性和热传导性是关键。对热作模具钢进行了热疲劳性,热导率、横向冲击韧性及组织热疲劳裂纹的数据比较,选择正确的热作工具钢能大幅度提高模具寿命。结果表明,正确选择压铸模用钢,能提高模具的产品质量和延长使用寿命,且生产效率高、经济效益好。 相似文献
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Shri N. Dubey 《International Journal of Cast Metals Research》2017,30(4):201-216
The most popular mould configuration for hot tearing evaluation of aluminium alloys, the Constrained Rod Casting (CRC) design, was evaluated via computer modelling. Filling patterns, heat flows, and shrinkage areas were assessed using the existing published design, and improvements in the design were generated. A mould of the improved design or Enhanced Constrained Rod Casting (ECRC) was fabricated and successfully used to evaluate the hot tearing tendencies of A206.2 and A380 die casting alloys. The ECRC mould reduced fill time and increased uniform filling of the constrained rods, which resulted in more uniform solidification rates for all the constrained rods. The ECRC mould and novel measurement technique predicted hot tearing in real time of A206.2 and A380 die casting alloys at initial pouring temperatures of 700, 760, and 800 °C. The A206.2 alloy exhibited hot tearing characteristics at the measurement rod while A380 did not show any hot cracking defects. 相似文献