product news/產品新聞
simulated residual moisture detected corresponded with the areas that had been producing the imperfections. Based on the simulation results, BMW modified the number and position of the venting nozzles and per- formed a second simulation. Te results showed a complete removal of the critical areas of high residual moisture. Subsequent production of cores based on the simulation confirmed the results. ■ Tis article is based on the paper “Core Drying Simulation and Validation,” presented at the 115th
Metalcasting Congress. Visit
www.flow3d.com for more information.
基于模拟结果，宝马公司对芯盒通气口的数量和位 置进行了改进，并进行了第二次试验。结果表明，残 余湿度过高的危险区域已经被消除。基于模拟结果， 改进砂芯生产，得到了验证。■
本文基于第115届铸造会议上发表的论文“砂芯干
燥模拟与验证”. 如果您想了解更多，请登录
www.flow3d.com。
The simulated residual moisture detected in the Flow Science model matched the affected areas in the real core.
使用Flow Science模型模拟的 残余水份区域与实际砂芯受影 响区域一致。
Mexican Foundry Reduces Chip Melt Loss With In-House Melting 墨西哥铸造厂通过封闭室熔炼降低了切屑熔化损失
At full capacity, Pistones Moresa, Mexico City, Mexico, an aluminum casting facility producing pistons for the Mexican automotive market, generates 65 tons of machining chips per month. Its melt loss for the chips sent to a smelter is more than 20%. Trough the years, it became the norm for the metalcasting facility to sign a yearly contract with the smelter under the premise that the weight of metal return would be no less than 76% of the weight of the smelted material, with losses of 7% to moisture, 17% to dross and negligible amounts to iron and other contaminants. Pistones Moresa wanted to increase the amount of chips
recovered, reduce the cost of recovering the machining chips and save on gas consumption by eliminating the double melting of machining chips. After a cost-benefit analysis, the casting business decided to invest in an in-house chip melting system. Doing so led to a total melt loss reduction from 17 to 3% for a partial monthly savings of $31,000, before subtract- ing the cost of low chip melting. Te savings also included the costs due to reductions for ingot purchased, as well as reductions in freight costs associated with smelting chips and hauling recycled metal back to the foundry. Te investment
墨西哥城的Pistones Moresa公司，是一家为墨西哥 市场生产活塞的铸铝厂，满负荷生产时每月产生65吨加 工切屑。其中回收熔炼切屑时损失率高达20%。过去， 工厂每年都会与熔炼厂家签订年度合同，保证回收金属 质量达到熔炼金属的76%以上，其中水粉损失7%、渣 损失17%，由于铁和其它污染物造成的损失可以忽略。 Pistones Moresa想要增加切屑量的回收，降低回收 损失，并通过消除二次熔炼来降低气体排放。经过成本 收益分析后，工厂决定投资建立一个封闭室切屑熔炼系 统。该措施使切屑损失由17%降至3%，不算熔炼耗能 的成本，仅此一项每月就节省31000美元。节省还包括 减少了铸锭采购和切屑熔炼的运输成本以及金属再运回 铸造厂的成本。该系统预计一年半就可以收回成本。 该项目是Pistones Moresa公司与位于墨西哥
Spring 2012
FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION | 63
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72