孔洞式全热滑轨应用综合效果分析

通过对鞍钢厚板厂三种滑块(垫块)的炉内钢坯加热全过程的典型跟踪测温,归纳分析了该厂滑轨改造成孔洞式全热滑轨后,对于轧钢加热炉在现有条件下,进一步提高生产能力,降低燃料消耗,改善钢坯加热质量,稳定轧制工艺,减少成品尺寸公差、提高成本质量所起到的作用。生产实践结果表明:这种新型孔洞式全热滑轨(垫块)能够适用各种轧钢加热炉型,综合经济效益显著,具有普遍推广意义。     

热带加热炉的改造

热轧带钢厂现有加热炉不能满足优钢生产工艺要求,制约了带钢品种拓宽和质量提高。通过在加热炉上应用孔洞式全热滑轨技术,并采取相关的技术措施,钢坯加热质量有所提高。     

加热炉半热滑轨的数值分析

在钢坯的加热过程中,为了有效地减弱或者消除钢坯的水管黑印,在加热炉的加热段和均热段一般采用半热滑轨或全热滑轨,滑轨端面温度对加热质量及钢坯在炉内的安全运行起着至关重要的作用,而端面温度取决于滑轨的高度和截面形状。结合工程实例,建立了相应的物理数学模型,采用数值分析的方法对不同高度下半热滑轨的温度场进行了计算,结果表明滑轨端面温度与其高度呈现出对数函数关系,在应用中梯形滑轨优于矩形滑轨。     

新型孔洞式全热滑轨技术在推钢式加热炉上的应用

介绍了新型孔洞式全热滑轨技术的原理、特点及其在推钢式加热炉上的应用。     

孔洞式全热滑块在推钢式加热炉上的应用

本文介绍了济钢中厚板厂为解决推钢式加热炉的炉底水管黑印问题而对加热炉滑轨的改进方案,并详细介绍了孔洞式全热滑块的技术特点,以及在推钢式加热炉上的使用效果.     

无水冷滑轨加热炉的设计及应用

介绍了加热高温合金钢坯的推块式加热炉,炉底采用无水冷滑轨结构,既能加热方坯又能加热圆坯,投入生产后取得较好的使用效果。     

加热炉纵水管布置的改进和热滑轨结构的选择

介绍韶钢集团公司四轧厂对推钢式连续加热炉炉底纵水管布置的形式进行改进，以图减轻钢坯水冷黑印，改善加热质量的情况，并根据推广应用耐热滑块的实践对热滑轨的结构形式的选择进行探讨。     

连续加热炉纵水管布置的改进及热滑轨型式的选择

介绍韶钢集团公司四轧厂对原推钢式连续加热炉炉底纵水管的布置进行改进，以图减轻钢坯水冷黑印，改善加热质量的情况，并根据推广应用耐热滑块的实践对热滑轨结构型式的选择作了探讨。     

Co40、Co20耐热滑轨在连续加热炉上的应用

轧钢加热炉普遍存在着钢坯加热黑印的缺陷.介绍了湘钢第二棒材厂轧钢加热炉在技术改造过程中,通过采用Co40、Co20全热滑轨取代传统的滑轨材质,达到了延长加热炉使用寿命和改善钢坯加热质量的目的.     

新型耐热滑块在厚板加热炉的应用

新型耐热式滑块在推钢式加热炉上的应用,解决了推钢式加热炉长期存在的加热钢坯黑印和划伤的问题。对新型耐热滑块几何尺寸、结构形式和材质选择等方面做了详细说明。     

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

正~~     

Zinc Production by Province in 2014

正~~     

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.