Patents by Inventor Dongsheng MEI
Dongsheng MEI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9765414Abstract: The present invention provides a heat treatment method of turnout track comprising performing an accelerated cooling on the turnout track to be treated having a railhead tread with a temperature of 650-900° C. so as to obtain the turnout track with full pearlite metallographic structure, wherein the accelerated cooling velocity performed on the working side of railhead of the turnout track is higher than that performed on the non-working side of the railhead of the turnout track. The present invention provides a turnout track obtained with a heat treatment process as depicted therein. The turnout track in present invention has good straightness; both the hardness and tensile strength of the working side of railhead are higher than that of the non-working side of railhead.Type: GrantFiled: December 27, 2013Date of Patent: September 19, 2017Assignees: PANGANG GROUP PANZHIHUA IRON & STEEL RESEARCH INSTITUTE CO., LTD., PANGANG GROUP PANZHIHUA STEEL & VANADIUM CO., LTD.Inventors: Ming Zou, Zhenyu Han, Dongsheng Mei, Yong Deng, Hua Guo, Quan Xu, Chunjian Wang
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Patent number: 9181447Abstract: A metal protective coating is provided, which is obtained by mixing homogeneously a raw mixture, which contains water soluble silicate, promoter, silane coupling agent, silicon oxide packing, water soluble film formation resin, and water; wherein, the promoter is at least one selected from the group consisting of methyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, carboxymethyl-hydroxyethyl cellulose, and their soluble salts; the silane coupling agent contains a first silane derivative shown in formula (1), wherein, R1, R2, and R3 are methoxyl or ethyoxyl respectively, and n is an integer with the range of 1-4. A hot-dip Zn metallic material and a hot-dip Al—Zn alloy metallic material are further provided. The protective film formed by the metal protective coating as provided has outstanding corrosion resistance, water resistance, thermal resistance, and fingerprint resistance properties.Type: GrantFiled: September 14, 2012Date of Patent: November 10, 2015Assignee: PANGANG GROUP PANZHIHUA IRON & STEEL RESEARCH INSTITUTE CO., LTD.Inventors: Zhefeng Xu, Dongsheng Mei, Yong Chen, Quan Xu, Yan Lou, Yilin Zhou
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Patent number: 9157131Abstract: A high carbon content and high strength heat-treated steel rail including by weight 0.80-1.20% carbon, 0.20-1.20% silicon, 0.20-1.60% manganese, 0.15-1.20% chromium, 0.01-0.20% vanadium, 0.002-0.050% titanium, less than or equal to 0.030% phosphorus, less than or equal to 0.030% sulfur, less than or equal to 0.010% aluminum, less than or equal to 0.0100% nitrogen, and iron. The steel rail has excellent wear resistance and plasticity and can satisfy the requirement for overloading. A method for producing the steal rail by heating a slab to a heating temperature, multi-pass rolling, and accelerated cooling, wherein a maximum heating temperature (° C.) of said slab is equal to 1,400 minus 100[% C], [% C] representing the carbon content (wt. %) of said slab multiplied by 100.Type: GrantFiled: November 23, 2010Date of Patent: October 13, 2015Assignees: PANGANG GROUP CO., LTD., PANGANG GROUP RESEARCH INSTITUTE CO., LTD., PANGANG GROUP PANZHIHUA STEEL & VANADIUM CO., LTD.Inventors: Ming Zou, Dongsheng Mei, Quan Xu, Yong Deng, Hua Guo, Ming Liu, Li Tang, Yun Zhao, Gongming Tao
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Publication number: 20140182751Abstract: The present invention provides a heat treatment method of turnout track comprising performing an accelerated cooling on the turnout track to be treated having a railhead tread with a temperature of 650-900° C. so as to obtain the turnout track with full pearlite metallographic structure, wherein the accelerated cooling velocity performed on the working side of railhead of the turnout track is higher than that performed on the non-working side of the railhead of the turnout track. The present invention provides a turnout track obtained with a heat treatment process as depicted therein. The turnout track in present invention has good straightness; both the hardness and tensile strength of the working side of railhead are higher than that of the non-working side of railhead.Type: ApplicationFiled: December 27, 2013Publication date: July 3, 2014Applicants: Pangang Group Panzhihua Steel & Vanadium Co., Ltd., Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd.Inventors: Ming Zou, Zhenyu Han, Dongsheng Mei, Yong Deng, Hua Guo, Quan Xu, Chunjian Wang
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Patent number: 8742000Abstract: A coating composition is provided, the starting materials of which comprise nano SiO2, film-forming substance, film-forming aid, accelerator, acid, and water. The composition has pH of 3-9. A passivated zinc-plated material is also provided. The zinc-plated material comprises zinc-plated substrate and passivated coat adhered to the surface of the zinc-plated substrate, wherein the passivated coat is formed by curing the coating composition. The coating composition can impart to the zinc-plated material excellent corrosion resistance, water resistance, high temperature resistance, surface conductivity, and adhesion to the zinc-plated substrate. Additionally, the coating composition contains no Cr6+, and satisfies the requirement of EU RoHS Directive.Type: GrantFiled: November 26, 2009Date of Patent: June 3, 2014Assignees: Pangang Group Steel Vanadium and Titanium Co., Ltd., Pangang Group Panzhihua Iron and Steel Research Institute Co., Ltd., Pangang Group Company Ltd., Pangang Group Research Institute Co., Ltd.Inventors: Zhefeng Xu, Dongsheng Mei, Taixiong Guo, Quan Xu, Yong Chen, Xingde Cheng, Guoan Li, Aiping Zhang
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Publication number: 20130193223Abstract: The present discloses a steel rail for high speed and quasi-high speed railways and a manufacturing method thereof. The steel rail having a superior rolling contact fatigue property can be obtained by reducing content of carbon in conjunction with controlled cooling after rolling. The steel rail includes 0.40-0.64% by weight of C, 0.10-1.00% by weight of Si, 0.30-1.50% by weight of Mn, less than or equal to 0.025% by weight of P, less than or equal to 0.025% by weight of S, less than or equal to 0.005% by weight of Al, more than 0 and less than or equal to 0.05% by weight of a rare earth element, more than 0 and less than or equal to 0.20% by weight of at least one of V, Cr, and Ti, and a remainder of Fe and inevitable impurities.Type: ApplicationFiled: September 2, 2011Publication date: August 1, 2013Applicant: Pangang Group Panzhihua Steel & Vanadium Co. LtdInventors: Dongsheng Mei, Ming Zou, Zhenyu Han, Quan Xu, Hua Guo, Yong Deng, Dadong Li, Li Tang, Yun Zhao, Jianhua Liu
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Publication number: 20130078456Abstract: A metal protective coating is provided, which is obtained by mixing homogeneously a raw mixture, which contains water soluble silicate, promoter, silane coupling agent, silicon oxide packing, water soluble film formation resin, and water; wherein, the promoter is at least one selected from the group consisting of methyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, carboxymethyl-hydroxyethyl cellulose, and their soluble salts; the silane coupling agent contains a first silane derivative shown in formula (1), wherein, R1, R2, and R3 are methoxyl or ethyoxyl respectively, and n is an integer with the range of 1-4. A hot-dip Zn metallic material and a hot-dip Al—Zn alloy metallic material are further provided. The protective film formed by the metal protective coating as provided has outstanding corrosion resistance, water resistance, thermal resistance, and fingerprint resistance properties.Type: ApplicationFiled: September 14, 2012Publication date: March 28, 2013Applicant: PanGang Group Panzhihua Iron & Steel Research Institute Co., Ltd.Inventors: Zhefeng Xu, Dongsheng Mei, Yong Chen, Quan Xu, Yan Lou, Yilin Zhou
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Publication number: 20120052312Abstract: A coating composition is provided, the starting materials of which comprise nano SiO2, film-forming substance, film-forming aid, accelerator, acid, and water. The composition has pH of 3-9. A passivated zinc-plated material is also provided. The zinc-plated material comprises zinc-plated substrate and passivated coat adhered to the surface of the zinc-plated substrate, wherein the passivated coat is formed by curing the coating composition. The coating composition can impart to the zinc-plated material excellent corrosion resistance, water resistance, high temperature resistance, surface conductivity, and adhesion to the zinc-plated substrate. Additionally, the coating composition contains no Cr6+, and satisfies the requirement of EU RoHS Directive.Type: ApplicationFiled: November 26, 2009Publication date: March 1, 2012Applicants: Pangang Group Steel Vanadium and Titanium Co., Ltd, Pangang Group Research Institute Co., Ltd., Pangang Group Company Ltd., Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd.Inventors: Zhefeng Xu, Dongsheng Mei, Taixiong Guo, Quan Xu, Yong Chen, Xingde Cheng, Guoan Li, Aiping Zhang
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Publication number: 20110253268Abstract: A high carbon content and high strength heat-treated steel rail including by weight 0.80-1.20% carbon, 0.20-1.20% silicon, 0.20-1.60% manganese, 0.15-1.20% chromium, 0.01-0.20% vanadium, 0.002-0.050% titanium, less than or equal to 0.030% phosphorus, less than or equal to 0.030% sulfur, less than or equal to 0.010% aluminum, less than or equal to 0.0100% nitrogen, and iron. The steel rail has excellent wear resistance and plasticity and can satisfy the requirement for overloading. A method for producing the steal rail by heating a slab to a heating temperature, multi-pass rolling, and accelerated cooling, wherein a maximum heating temperature (° C.) of said slab is equal to 1,400 minus 100[% C], [% C] representing the carbon content (wt. %) of said slab multiplied by 100.Type: ApplicationFiled: November 23, 2010Publication date: October 20, 2011Applicants: PANGANG GROUP CO., LTD., PANGANG GROUP PANZHIHUA STEEL & VANADIUM CO., LTD., PANGANG GROUP RESEARCH INSTITUTE CO., LTD.Inventors: Ming ZOU, Dongsheng MEI, Quan XU, Yong DENG, Hua GUO, Ming LIU, Li TANG, Yun ZHAO, Gongming TAO