Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd.

Pangang Group Research Institute Co., Ltd.

Pangang Group Panzhihua Steel & Vanadium Co., Ltd.

Pangang Group Company Ltd.

Pangang Group Steel Vanadium and Titanium Co., Ltd.

Dongsheng Mei

Quan Xu

Yong Deng

Ming Zou

Hua Guo

Yong Chen

Zhefeng Xu

Li Tang

Zhenyu Han

Chunjian Wang

Yilin Zhou

Taixiong Guo

Yan Lou

Ming Liu

Yun Zhao

Gongming Tao

Xingde Cheng

Guoan Li

Aiping Zhang

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&#xb0; 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.

Heat treatment method of turnout track and the turnout track

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, R, R, and Rare 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&#x2014;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. 

Metal protection coating, hot-dip Zn metallic material and hot-dip Al&#x2014;Zn metallic material using the same

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 (&#xb0; C.) of said slab is equal to 1,400 minus 100[% C], [% C] representing the carbon content (wt. %) of said slab multiplied by 100.

High carbon content and high strength heat-treated steel rail and method for producing the same

A coating composition is provided, the starting materials of which comprise nano SiO, 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 Cr, and satisfies the requirement of EU RoHS Directive.

Preparation method of hot dip galvanized sheet anti-corrosive treatment agent of environmental protective

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Dongsheng Mei