St45.8 boiler pipe

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St45.8 boiler pipe decarbonization and oxidation


Based on the comprehensive achievements of science, technology and practical experience, the quality of St45.8 boiler pipe can be improved to meet the needs of manufacture and design of high pressure boiler. Katalor has the rich experience in the St45.8 boiler pipe. We have been worked in St45.8 boiler pipe for more than 10 years.


When the St45.8 boiler pipe is heated, the surface carbon reacts with oxygen, hydrogen, carbon dioxide and water vapor in the medium (or atmosphere), which reduces the surface carbon concentration called decarbonization, and decreases the surface hardness, fatigue strength and wear resistance of the St45.8 boiler pipe after quenching. Moreover, the St45.8 boiler pipe residual tensile stress on the surface is easy to form a network crack on the surface. When heated, the reaction of iron and alloys with elements and oxygen, carbon dioxide and water vapor in the medium (or atmosphere) to form oxide films is called oxidation. The dimension precision and surface brightness of the workpiece oxidized at high temperature (generally 570℃ or above) deteriorate, and the St45.8 boiler pipe parts with poor hardenability of oxygen film are easy to be used. A quenching soft spot appears. Measures to prevent St45.8 boiler pipe oxidation and reduce decarbonization include: coating on workpiece surface, sealed heating with stainless steel foil, heating in salt bath furnace, heating in protective atmosphere (such as purified inert gas, controlling carbon potential in furnace), A flame-burning furnace, ie one that causes the gas to be reductive.

Please contact us if you have any need in St45.8 boiler pipe, we will reply you as soon as possible. And we can supply the St45.8 boiler pipe with high quality and different size to meet your any requirements. Of course we can solve your any confusion about St45.8 boiler pipe. Welcome to cooperate with us.

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