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耐磨板切割预热从哪些方面进行?

所属分类:公司动态 发布时间:2021-04-21 13:47:08 来源:http://www.lcnmb500.com 浏览量:

耐磨板对锰系有色金属明确提出了低磷、低硫、低钛、低铝、低氮、乏氧、低氢等规定。当今的锰系有色金属的品质并不可以做到品种钢的规定,其存有的关键产品质量问题有:锰硅铁合金中Ti、Al、P、O、N、H成分高;中、低碳环保锰有色金属中的P、S、O、N、H成分高。应提升对锰系有色金属中各种残渣成分的操纵,主要是:

Low phosphorus, low sulfur, low titanium, low aluminum, low nitrogen, low oxygen and low hydrogen are specified for manganese nonferrous metals. The quality of today's Manganese non-ferrous metals can not meet the requirements of steel varieties. The key product quality problems are: high content of Ti, Al, P, O, N and h in manganese ferrosilicon alloy; high content of P, s, O, N and h in medium and low carbon environmental manganese non-ferrous metals. It is necessary to improve the control of various residues in manganese nonferrous metals

1、汽体成分

1. Vapor composition

因为在800-1000℃,N2与锰快速响应,且制冷全过程中也在增氮,因而提升制冷速率对降氮有益。操纵回炉废料的H2O成分(吸附水和结晶水)和减少焦碳挥发分,降低炉内铝合金与氢的触碰,可减少锰系有色金属中的氢成分。另外,防止在粉碎、运送、存储的全过程中与湿冷的气体触碰,以避免铝合金产生吸氢反映。

Because of the rapid response of N2 and Mn at 800-1000 ℃, and the increase of nitrogen in the whole refrigeration process, increasing the refrigeration rate is beneficial to nitrogen reduction. The hydrogen content in manganese nonferrous metals can be reduced by controlling the H2O composition (adsorbed water and crystal water) of the waste material, reducing the volatilization of coke, and reducing the contact between aluminum alloy and hydrogen in the furnace. In addition, it can prevent the aluminum alloy from contacting with the wet and cold gas in the whole process of crushing, transportation and storage, so as to avoid the hydrogen absorption reaction of aluminum alloy.

耐磨板切割预热从哪些方面进行?(图1)

2、碳、硫和氧含量耐磨钢

2. Wear resistant steel with carbon, sulfur and oxygen content

减少锰硅铁合金中碳成分的行得通方式有:镇定降碳;提升锰硅铝合金的硅成分;生成渣精练降碳。

The feasible ways to reduce the carbon content in Mn Si Fe alloy are: calm and reduce carbon content; improve the silicon content of Mn Si Al alloy; generate slag to refine and reduce carbon content.

根据造偏碱渣,对铝合金开展渣洗精练,可减少锰系有色金属中的含硫量。

The sulfur content in manganese nonferrous metals can be reduced by washing and refining aluminum alloy slag according to the alkaline slag.

根据重熔精练,可让锰系有色金属中的金属氧化物参杂上调至铝合金表层,被顶渣吸咐。除此之外,还可效仿炼钢过程的脱氨基本原理和加工工艺,对锰系有色金属开展铝脱氨和硅脱氨,减少氧含量。

According to remelting and refining, metal oxides in manganese nonferrous metals can be mixed up to the surface of aluminum alloy and absorbed by top slag. In addition, the basic principle and processing technology of deamination in steelmaking process can be imitated to carry out aluminum deamination and silicon deamination for manganese nonferrous metals to reduce oxygen content.

激光切割裂痕:耐磨板激光切割裂痕类似电焊焊接时造成氢致裂痕,假如厚钢板裁边造成裂痕,可能在切薄两天至几个星期内才出現。因而,激光切割裂痕归属于延迟时间性裂痕,耐磨板薄厚和强度越大,出現激光切割裂痕就越大。

Laser cutting crack: the laser cutting crack of wear-resistant plate is similar to the hydrogen crack caused by electric welding. If the crack is caused by cutting the edge of thick steel plate, it may appear within two days to several weeks after cutting thin. Therefore, the laser cutting crack belongs to delay time crack. The thicker and stronger the wear plate is, the larger the laser cutting crack appears.

加热激光切割:防止耐磨板激光切割裂痕合理的方式,便是在激光切割前开展加热。在开展数控火焰切割前,厚钢板一般都需要加热,其加热溫度高矮关键在于厚钢板质量等级和板厚,加热方式可选用火苗烧枪、电子器件加温垫开展的,还可以应用热处理炉加温。为明确耐磨板加热实际效果,应在加温点被面检测所需溫度。

Heating laser cutting: the reasonable way to prevent laser cutting crack of wear-resistant plate is to carry out heating before laser cutting. Before NC flame cutting, thick steel plate generally needs to be heated. The key to its heating temperature lies in the quality grade and thickness of thick steel plate. The heating method can be carried out by flame burning gun, electronic device heating pad, or heat treatment furnace. In order to determine the actual heating effect of wear-resistant plate, the required temperature should be detected at the heating point.