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On Big Data Expo in Guiyang on May 28 2017 in regards to the anti counterfeiting problem of Maotai Ma Huateng Tecent CEO expressed that in the future the networking anti counterfeiting form that was based on cloud end and mixed blockchain technology was far effective than the traditional anti counterfeiting trademark

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Comparison of the machinability of titanium alloy forging and powder metallurgy materials Yao Xifan Lin Yingzi Emerging manufacturing paradigm shifts for the incoming industrial revolution 67 148 S China Univ Technol

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It mainly import iron ore copper powder and wood products The average monthly shipping volume reached as many as 160 000 tons of iron ore and 10 000 cubic meters of timber We imported about 2 million tons of goods amounted to 20 million U S dollars in 2007

PDF Morphology Hardness and Wear Properties of

tempered thrice at the same temperature to eliminate the stress generated during plasma Coatings 2020 10 641 3 of 15 cladding and cause solid solution strengthe ning of

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Sell Tempered Glass Paddle Tennis Court China Manufacturer 3mm The beam is made of high quality steel pipe with hot dip galvanizing process size of the steel pipe 80mm 80mm 3mm The diameter of the mesh is 4mm mesh size is 50 mm 50mm The end of the mesh is protected from scratches and hooks

Effect of Quenching and Tempering Process on Mechanical

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The results showed that The microstructure of 30MnB steel was the tempered martensite and retained austenite after quenching at 840 c 900 c and then tempering at 200 c the carbide precipitation did not occur when 30MnB steel was tempered at 200 c only the carbon segregation occurred

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To improve the cutting performance the red hardness and wear resistance of M2 high speed steel as well as expand the application field in this work a coating was fabricated via plasma cladding on M2 high speed steel using Ni Cr and Cu alloy elements as precursor materials The distribution and composition of alloying elements microhardness and wear resistance of the coating were studied

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Austenitic Grain Size of Steel Metallurgy Increases grain size 0 04 is allowable in Structural Steel 0 035 Maximum in Tool Steel Austenitic Grain Size of Steel Metallurgy With between 11 and 15 manganese an about 1 Carbon Steel retains it s Austenitic condition even after quenching in water after heating to 1000 deg C

Influence of yttrium on laser surface alloying

In order to improve the performance of the metal rollers Mo Y 2 O 3 alloy powders were used to coat uniformly on the surface of 40Cr steel roller substrates for the laser surface alloying treatment by a CO 2 laser The results showed that many good consequences were obtained after adding the rare earth oxide Y 2 O 3 The crystal grains of the alloy layer were significantly refined

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Development of next generation tempered and ODS

For the postalloyed sample adding Al during ball milling a dual‐phase structure composed of reticular Al‐rich regions and a steel matrix is formed in the milled powder due to the highly

PDF Morphology Hardness and Wear Properties of

tempered thrice at the same temperature to eliminate the stress generated during plasma Coatings 2020 10 641 3 of 15 cladding and cause solid solution strengthe ning of

Friction and Wear Properties of High velocity Oxygen

tempered around 600 C for 30 min was used as the substrate of the WC 17Co coating The substrates 10 mm 10 mm 20 mm in size were polished to a surface roughness Ra of 0 01 μm and an AISI 52100 steel ball radius of 20 mm and roughness Ra of 0 01 μm was used as the counter body First subjected to normalizing heat