-
2011.陶瓷颗粒增强铁基表面复合材料的研究现状与最新进展
[金属制品业] [2014-02-15]
综述了铸渗法制备陶瓷颗粒增强铁基表面复合材料的研究现状.重点介绍了近年来关于表面复合材料的强韧化设计与制备技术方面取得的最新研究进展.基于复合材料的微观界面,阐明了制备过程中值得关注的问题,并对未来的发展进行了展望.
关键词：表面复合材料；铸渗技术；颗粒增强；强韧化设计
-
2012.大型船用挂舵臂铸件的生产
[金属制品业] [2014-02-15]
对大型船用挂舵臂铸件的工艺设计、现场生产和生产过程的管理进行了详细探讨,并严格按照确定的工艺设计方案完成了该件的生产,最终该产品通过了7个国家船级社的认证.总结了成功的生产经验,为以后生产大件的工厂提供参考和帮助.
关键词：船用件；大型铸钢件；生产管理
-
2013.机械往复炉排材质的组织和性能
[金属制品业] [2014-02-15]
采用万能试验机、冲击试验机及洛氏硬度仪,测试研制的ZG30Cr26Ni4、RTCr28Ni4和RTCr 18三种材质的力学性能,并利用金相显微镜和扫描电镜对合金的金相组织、拉伸及冲击断口形貌进行观察.结果表明:ZG30Cr26Ni4的冲击韧度较好,但硬度和强度均低于RTCr28Ni4和RTCr18;RTCr18硬度和常温抗拉强度较高,但冲击韧度和高温强度均低于RTCr28Ni4.三种合金中RTCr28Ni4的综合性能优良.
关键词：炉排；组织；性能
-
2014.GX-12CrMoVNbN高合金马氏体不锈钢铸件气孔的产生和防止
[金属制品业] [2014-02-15]
GX-12CrMoVNbN铸钢件是百万千瓦超超临界汽轮机中的主要部件.针对该钢种铸件出现的大量气孔缺陷进行了分析.通过采取强化熔炼工艺、改进浇注工艺、优化铸造工艺等一系列措施,有效地防止了铸件气孔的产生.
关键词：气孔；含N不锈钢；改进措施
-
2015.Zn/Y比对Mg94ZnxY(6-x)合金铸态组织和耐磨性能的影响
[金属制品业] [2014-02-15]
利用普通铸造法制备了Mg94ZnY(6-x)(x=5.2、4、3、2、0.8)合金,考察了Zn/Y原子比对铸态组织与物相组成及摩擦磨损性能的影响.结果表明:Zn/Y比对其组织结构和物相组成有明显影响,Mg94Zn52Y08合金其合金相主要呈断续网状和颗粒状,且其物相组成较为简单,但随着Zn/Y比减小,化合物主要呈晶间连续网状析出,合金相组成变得复杂.当Zn/Y比为1∶1、1∶2时,在合金中析出Mg12ZnY三元相,几种材料的磨损机制均主要表现为犁沟磨损,粘着磨损和氧化磨损,Mg94Zn0.8Y5.2的硬度较大,耐磨性最佳.
关键词：稀土镁合金；Mg-Zn-Y合金；Zn/Y原子比；摩擦磨损
-
2016.超声波高温检测在铸钢件上的应用
[金属制品业] [2014-02-15]
铸钢件在缺陷焊补过程中需预热、焊后冷却、超声波检测等工序,当超声波检测发现缺陷后仍需重复预热、冷却工序,这造成了焊接周期较长的问题.为减少铸钢件的焊接周期,研究和分析超声波高温检测中的声学特性,确定并验证了适用于铸件超声波高温检测的温度、检测灵敏度、缺陷定位差异等参数.
关键词：超声波；高温检测；检测灵敏度
-
2017.Al-5Ti-0.25C-2RE对3003铝合金组织的影响
[金属制品业] [2014-02-15]
采用光学显微镜(OM)、扫描电镜(SEM)等手段,研究了Al-5Ti-0.25C-2RE中间合金对3003铝合金铸态组织的影响.结果表明:Al-5Ti-0.25C-2RE中间合金能有效细化3003合金晶粒,0.5wt.％的添加量可将3003晶粒由1 729 μm细化至172 μm; Al-5Ti-0.25C-2RE中问合金对3003合金晶粒细化具有速效性和长效性,保温15 min时晶粒被细化至156μm,细化效果达到最佳；Al-5Ti-0.25C-2RE中间合金能有效将3003合金中长针状第二相变质成细小短杆状和颗粒状.
关键词：Al-Ti-C-RE中间合金；3003合金；细化剂；组织
-
2018.中国钛焊管行业发展现状分析
[金属制品业] [2013-10-10]
钛焊管作为一种相对独特的钛管产品形式，是把冷轧钛带卷进行轧制成管形后采用钨极惰性气体保护焊将缝隙焊合而成。由于其优异的耐海水腐蚀的性能，自开发出来后就成为了各类冷凝器和热交换器替代不锈钢和铜管作为换热管的首选材料，也因此被广泛应用于制造滨海电站、核电站、海水淡化、石油化工等需海水作为冷却介质的冷凝器和热交换器。
关键词：钛焊管；发展现状
-
2019.全球封闭盖和喷口盖市场报告（2012-2016年）
[金属制品业] [2013-10-01]
Caps and closures are used for closing or sealing packaged products such as food, beverages, personal care, household care, and automotive products. They are generally made of materials such as metal, plastic, rubber, or combinations of them. The market for caps and closures includes threaded caps, hinged caps, roll-on closures, twist-off closures, stoppers, corks, dispensing closures, lug caps, and canning lids. Caps and closures are used for various purposes such as protecting the contents from spoilage, dust, and evaporation, keeping its contents fresh, and convenience of handling. These days, caps and closures are also used for product differentiation as well as brand building. Hence, caps and closures form an essential element in the overall packaging of products, increasing both aesthetics and functionality of the products.
关键词：封闭盖；喷口盖；瓶盖；密封包装；材料
-
2020.全球金属铸造市场报告（2012-2016年）
[金属制品业] [2013-09-30]
Metal casting is a manufacturing process in which molten or liquid metal is poured into a mold made of sand, metal or ceramic, which contains a hollow cavity of the desired shape, to form geometrically complex parts. All major metals can be made into castings and the most common ones are iron, aluminum, magnesium, zinc, steel and copper-based alloys. Metal castings find application in cars, trucks, planes, trains, mining and construction equipment, oil wells, pipes, toys, space shuttles, wind turbines, nuclear plants, and more.The Global Metal Casting market is expected to grow steadily during the period 2012-2016. The market was dominated by the APAC region in 2012, followed by the Americas and the EMEA region. The Global Metal Casting market is expected to grow at a CAGR of 7.89 percent during the forecast period.
关键词：金属铸件；制造过程；铁；铝；镁；锌；钢
027-87841330