QT400—15指形板座的消失模铸造与砂型铸造的工艺研究及效果对比

在生产QT400-15指形板座的实践中，应用普通砂型铸造和消失模铸造，产生了两种不同的效果。经比较认为消失模铸造具有其独特的优势。同时简述了消失模铸造工艺对生产该产品的技术关键。     

消失模铸造中的白色缺陷分析和预防措施

分析了消失模铸造的铸件出现白色缺陷的原因，并根据生产实际提出了一些有效的预防措施。     

4350m^3高炉耐磨管消失模铸造的计算机凝固模拟

本文通过采用华铸CAE软件,对4350m^3高炉耐磨管消失模铸造过程进行计算机数值模拟,通过模拟找出缺陷易产生部位,结果与生产实际情况相符合,采取针对性的工艺措施,有效地防止铸造缺陷的产生。     

关于对我国发展消失模铸造技术的几点看法

本文针对消失模铸造技术的特点，结合我国汽车工业的发展状况，提出了汽车工业的发展给消失模铸造技术的推广应用籽空前的机遇，并团结消失模铸造工艺的关键技术提出了一些看法。     

加热炉炉排片的消失模铸造

介绍了采用消失模铸造方法生产工业加热炉炉排片的各种工艺参数。采用消失模铸造方法生产炉排片可使造型工艺大为简化，内部组织致密，铸件表面质量和尺寸精度大大提高。     

大型铸钢轴承座的铸造

通过对大型铸钢轴承座的工艺分析，制订出了正确、合理的铸造工艺，一次铸造成功。铸件经加工后，内外光洁，无气孔及砂眼等铸造缺陷。为机制公司创造了可观的经济效益。     

采用消失模工艺生产优质铸件的方法

日本专利特开2006-175492本专利提供一种消失模的铸造方法,它可以在不影响金属液的流动性的前提下,降低浇注温度,低成本生产无缺陷的优质铸件。消失模铸造时的填砂采用于砂,模样采用泡沫塑料,金属液的浇注温度为     

发电厂球磨机用衬板的消失模铸造生产

消失模铸造是当今国际铸造业发展的方向之一,具有设备省、见效快、产品质量好、生产成本低、生产效率高、占用场地少、成本几乎不受批量影响等显著特点,发电厂在生产中,采用消失模铸造工艺生产,能很好发挥消失模铸造的优点,顺利完成球磨机用衬板的生产任务。     

消失模铸造工艺在转炉炉口上的应用实践

介绍了消失模生产转炉炉口的铸造工艺及应用效果。对生产过程中的工艺要点和设备工艺参数做了详细介绍,炉口采用消失模工艺后的表面质量和内在质量得以提高,对炉口的实际应用效果进行了验证。     

两种不同铸造方式对5754铝合金铸锭质量的影响

从5754铝合金在铸造过程中容易出现拉裂缺陷的角度出发，分析了拉裂缺陷产生的主要原因，对比了普通模铸造方式和隔热膜铸造方式生产的5754合金铸锭的冶金质量，提出了两种铸造方式的差异，总结出合理的铸造工艺制度。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.