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首页> 外国专利> BLAST TUYERE OF BLAST FURNACE AND METHOD FOR APPLYING OF PROTECTIVE COATING ONTO BLAST TUYERE OF BLAST FURNACE

BLAST TUYERE OF BLAST FURNACE AND METHOD FOR APPLYING OF PROTECTIVE COATING ONTO BLAST TUYERE OF BLAST FURNACE

机译：高炉高炉风口及在高炉高炉风口上的保护涂层的应用方法

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FIELD: ferrous metallurgy, in particular, melting of cast iron in blast furnaces with the use of water-cooled copper blast tuyeres.;SUBSTANCE: blast tuyere is composed of inner and outer copper sleeves connected at their ends with steel flange and copper shell with protective coating applied onto the entire working surface of copper part of tuyere. First inner layer of protective coating is made from oxides or mixture thereof with admixture of 4±0.2% of titanium dioxide and has thickness of 1-5 mm, and second outer layer of zirconium dioxide has thickness of 0.2 mm. Method involves preparing tuyere surface by abrasive removal of its upper layer and applying underlayer; providing flame spraying process for deposition of 1-mm thick layer of oxides or mixtures thereof with admixture of 4±0.2% of titanium dioxide; increasing its thickness to value of 5 mm; providing flame spraying process for deposition of 0.2 mm thick layer of zirconium dioxide.;EFFECT: increased strength of tuyere.;4 cl, 2 dwg, 2 ex
机译：领域：黑色冶金，特别是使用水冷铜鼓风口在高炉中熔化铸铁。;物质：鼓风口由内外铜套组成，内外铜套的两端与钢法兰和铜壳相连，涂在风口铜部分整个工作表面上的保护涂层。第一保护涂层的内层由氧化物或其混合物与4±0.2％的二氧化钛的混合物制成，并且具有1-5mm的厚度，并且第二氧化锆的第二外层具有0.2mm的厚度。该方法包括通过磨蚀除去其上层并涂覆底层来制备风口表面。提供火焰喷涂工艺，以沉积厚度为1毫米的氧化物或其混合物以及4±0.2％的二氧化钛混合物;将其厚度增加到5毫米;提供火焰喷涂工艺以沉积0.2毫米厚的二氧化锆层;效果：提高风口强度; 4 cl，2 dwg，2 ex

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