5 Years Factory Tool Steel Factory from Suriname
Tool steels contain tungsten, molybdenum, cobalt and vanadium in varying quantities to increase heat resistance anddurability, making them ideal for cutting and drilling equipment.
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Tool steels contain tungsten, molybdenum, cobalt
and vanadium in varying quantities to increase heat resistance and
durability, making them ideal for cutting and drilling equipment.
TCM BALER：http://www.tcmbaler.com/ a professional manufacturer, specialize in hydraulic compressing machine/ baling press compactor/pressing baler for more than 15years, Our products are applicable for waste cardboard/ cardbox, OCC, plastic bottles ,fiber, rags,wipers,used clothes/clothing,textiles, cotton, newspaper, kraft paper, scrap metal, mattress spring, scrap car body, heavy steel etc. plays a big role in recycling industry, welcomed by domestic and national customers.
1.Fully automatic horizontal baling press
2.Semi-automatic horizontal baling press
3.vertical baling press baler
4.wipers/rags bagging press baler
5.scrap metal baling compactor
6.shearing baler machine
8.movable scrap metal baler compactor
9.single shaft shredder
10.double shaft shredder
Tel: 0086 -21-61522014
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A lecture given by K. Fang, at the Adventures in the Physical Metallurgy of Steels (APMS) conference held in Cambridge University. Nanostructured bainite is incredibly difficult to weld because of its high carbon concentration. Here an innovative method is presented to resolve the weldability. The presentation file can be downloaded from http://www.msm.cam.ac.uk/apms/
High-carbon nanostructured bainite steel is very difficult to be well welded due to poor weldability. By adopting a new technology called regeneration treatment, the welded joint has similar microstructures and mechanical properities to base metal. The effect of regeneration time (0h-120h) and temperature (230Â°C-270Â°C) on microstructures and mechanical properities was also investigated.
Results show that microstructures in fusion and austenitised zones consist of two phases when regeneration time is long enough, which are nano-scale bainite ?lms separated by carbonâ€”enriched ?lms of retained austenite. However, volume fraction of retained austensite in fusion zone is a little lower than austenitised zone. With regeneration temperature increasing, volume fraction of retained austensite increases and thickness of slender platelets shows the same changing trend. The changes of microstructures have important effect on mechanical properities. By tensile and hardness test, the strength of fusion zone is lower than austenitised zone, but both increases with regeneration temperature decreasing while the elongation decreases. And the micro hardness increases when regeneration temperature decreasing. The strength of obtained welds reaches to as high as 1.7-2.1 GPa and corresponding hardness 550HV-650 HV.