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Fluid steel hardenability

Fluid tube is designed for conveying fluid nature of the medium with a pipe. Medium has fluid properties, in addition to water, oil, solution, such as a liquid medium, cement, grain, coal and other solid media under certain conditions can flow. 

Fluid pipe can be steel, non-ferrous metals can be manufactured with copper, titanium, and even can be manufactured from plastic and other non-metallic materials.
After quenching fluid pipe. In this case the most outer layer of martensite, representing 9,799%. The more the less the amount of martensite inside until it does not. From the surface to the preliminary accounts for 50% of the area of martensite as accounting norms, counted fluid steel hardened layer; then the depth of the hardened layer thickness as a function of the Audit purpose thermal processor, called quenching Permeability. Fluid hardened steel thickness, it shows it good hardenability; steel hardened layer shallow, it means it is not good hardenability. So hardenability essentially means fluid in the pipe cross-section is hardening ability. Mechanical parts, the primacy of hardenability; hardenability test the fluid pipe thermal processor function after an altercation primary purpose is to use a reliable identification of parts primary basis. Hardenability good information, and its mechanical function or, extraordinary fatigue strength will be greatly improved, and then extend the service life. According to this feature, the choice hardenability good material to manufacture parts, part size can be reduced, saving a lot of information. 
Fluid pipe material hardenability is the ability to get hardened layer depth, in the same quenching conditions, Bian death was hard layer deeper, the fluid steel hardenability better, which is inherent Li of steel, its mainly depends on the size of the critical cooling rate, which is the fluid content of alloying elements in steel-related, where the increase in size of supercooled austenite stability elements, can improve hardenability, additional heating temperature increased, the sample can improve the hardenability. Fluid pipe material hardened steel after quenching refers to, can achieve maximum hardness, also known as can hard. Main depends quenched martensite carbon content, carbon content, the higher the hardness of martensite higher foreign hard alloy tube, the better. Hardened sexual relations with little content of alloying elements in steel. 
Thus, fluid pipe material is quenched hardenability reach the level of hardness, hardenability is reached after quenching, the depth of the Azusa hard layer, so hardened high alloy pipe, which is not necessarily good hardenability. A fluid such as carbon tool steel pipes quenched martensite hardness up 66HrC, but the hardenability is poorFree Reprint Articles, and the low carbon martensitic hardness after quenching fluid pipe is generally not high.

Source: Free Articles from ArticlesFactory.com

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steel pipe hardness, seamless steel pipe for fluid transportation



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