屈服强度800MPa级低碳贝氏体钢试验研究

通过对一种含Cu低碳Mn-Nb-Mo-B微合金钢进行的变形与冷却试验,研究了一种屈服强度达到800 MPa级的贝氏体钢.利用EBSD技术对钢的微细组织结构和析出物形貌进行了分析.研究结果指出:贝氏体的细化和微细析出物对屈服强度800 MPa级高强铜的强韧性起决定性作用.焊接性试验表明,研究铜种具有较低的冷裂纹敏感性,在0℃环境进行的焊接裂纹率为零.     

高强度耐大气腐蚀塔桅结构用钢板的研制开发

对高强度耐大气腐蚀钢进行了 Cu、Cr、Ni、Nb合金化处理 ,配合冶炼、控温轧制等生产工艺 ,开发研制了屈服强度达到 390 MPa的高强耐大气腐蚀钢板。结果表明 ,该钢具有高强度、强韧性及良好的焊接和耐大气腐蚀等性能 ,其年腐蚀率小于 0 .0 2 5 mm / a。     

高强度高韧性海洋钻井平台钢A710-PT的研制

对含铜钢的铜时效特征及其强化机理进行了研究。钢中添加0．80％以上的铜,通过时效处理使其在基体中析出细小弥散的e-Cu颗粒,可提高钢的强度和韧性。基于本研究开发出一种屈服强度高于520MPa、-40℃冲击功超过280J,同时具有优良综合性能的海洋钻井平台钢新产品。     

含Cu的Mn-Nb-B系超低碳贝氏体钢的强韧化机理

对一种含铜超低碳Mn-Nb-B系微合金钢进行TMCP工艺,得到屈服强度达850 MPa的超低碳贝氏体钢。采用光学显微镜和扫描电子显微镜对试验钢不同板厚处的组织进行观察与分析,通过透射电子显微镜分析试验钢板条贝氏体间析出物,结果表明,屈服强度850 MPa超低碳贝氏体钢组织主要为细小的板条贝氏体,沿板厚方向上贝氏体板条宽度变化不大,板条长度从表层到心部逐渐增大。贝氏体板条的细化和微细析出物的形态、大小及分布对试验钢的强韧性起决定作用。     

舞钢调质高强度钢板

随着国民经济建设的不断发展,市场对屈服强度为590MPa以上级别铜的需求量日益增大,且对钢材的力学性能、焊接性能提出了更高的要求。自2006年以来,舞钢大力进行调质钢试制开发,现已形成屈服强度在590～960MPa的调质钢系列品种,其强韧性指标及焊接性能达到或超过同类进口产品水平,满足了国内对高强钢的需求,替代了进口.     

新型Cr-Co-Ni-Mo系马氏体时效不锈钢的强韧化机理

研究了由我国自行研制的Cr-Ni-Co-Mo系高强度马氏体时效不锈钢的强韧化机理.结果表明,该钢在535℃时效强度可达1 940 Mpa,KIC=141 Mpa·平方根m,此时钢中析出的大量、弥散、细小的Fe2Mo型Laves相是保持超高强度的主要原因;在纤细的马氏体板条界上有少量的残余奥氏体使钢具有较高的韧性.该钢具有优良的综合性能,特别适合于制造新一代高强高韧、承力的耐海洋环境腐蚀结构件,并在航天及航空领域潜在着应用前景.     

舞钢调质高强度钢板

随着国民经济建设的不断发展，市场对屈服强度为590MPa以上级别钢的需求量日益增大，且对钢材的力学性能、焊接性能提出了更高的要求。自2006年以来，舞钢大力进行调质钢试制开发，现已形成屈服强度在590～960MPa的调质钢系列品种，其强韧性指标及焊接性能达到或超过同类进口产品水平，满足了国内对高强钢的需求，替代了进口。     

舞钢调质高强度钢板

随着国民经济建设的不断发展，市场对屈服强度为590 MPa以上级别钢的需求量日益增大，且对钢材的力学性能、焊接性能提出了更高的要求。自2006年以来，舞钢大力进行调质钢试制开发，现已形成屈服强度在590～960MPa的调质钢系列品种，其强韧性指标及焊接性能达到或超过同类进口产品水平，满足了国内对高强钢的需求，替代了进口。     

舞钢调质高强度钢板

随着国民经济建设的不断发展，市场对屈服强度为590MPa以上级别钢的需求量日益增大，且对钢材的力学性能、焊接性能提出了更高的要求。自2006年以来，舞钢大力进行调质钢试制开发，现已形成屈服强度在590～960MPa的调质钢系列品种，其强韧性指标及焊接性能达到或超过同类进口产品水平，满足了国内对高强钢的需求，替代了进口。     

舞钢调质高强度钢板

随着国民经济建设的不断发展，市场对屈服强度为590MPa以上级别钢的需求量日益增大，且对钢材的力学性能、焊接性能提出了更高的要求。自2006年以来，舞钢大力进行调质钢试制开发，现已形成屈服强度在590～960MPa的调质钢系列品种，其强韧性指标及焊接性能达到或超过同类进口产品水平，满足了国内对高强钢的需求，替代了进口，     

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.     

Seven Rare Earth Projects Involving Close to 3 Billion Yuan Investment Landed In the HighTech Zone

正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully.