ERW straight crease welded pipe surface extinguishing and treating heat treatment,Guest Posting generally by acceptance warming or fire warming. The super specialized boundaries are surface hardness, nearby hardness and viable solidified layer profundity. The hardness test might be performed by a Vickers hardness analyzer or a Rockwell or surface Rockwell hardness analyzer. The decision of test force (scale) is connected with the viable solidified layer profundity and the surface hardness of the straight crease welded pipe. There are three hardness analyzers required here.
Vickers hardness analyzer is a significant means calculate love with love calculator to test the surface hardness of intensity treated straight crease welded pipe. It can test the surface solidified layer as flimsy as 0.05mm thick with the test power of 0.5-100kg. It has the most elevated accuracy and can recognize the outer layer of intensity treated workpiece. A little contrast in hardness. Likewise, the compelling solidified layer profundity is additionally estimated by a Vickers hardness analyzer. In this way, it is important to prepare a unit for surface intensity therapy or countless surface intensity treated straight crease welded pipes with a Vickers hardness analyzer.
The surface Rockwell hardness analyzer is additionally truly reasonable for testing the hardness of surface solidified workpieces. The surface Rockwell hardness analyzer has three scales to look over. Different surface solidified straight crease welded pipes with a viable solidifying profundity of beyond what 0.1 mm can be tried. Albeit the precision of the surface Rockwell hardness analyzer isn’t generally so high as the Vickers hardness analyzer, it has had the option to meet the prerequisites for of value the board and investigation of the intensity therapy plant. In addition, it enjoys the benefits of basic activity, helpful use, low cost, quick estimation, and direct perusing of hardness values, and so on, utilizing the surface Rockwell hardness analyzer to do fast and non-disastrous part-by-piece examination of bunches of surface intensity treated straight crease welded pipes. This is of incredible importance for the development of lake crease welded line and hardware fabricating plants.
At the point when the surface intensity treated solidified layer is thick, a Rockwell hardness analyzer can likewise be utilized. At the point when the thickness of the intensity treated solidified layer is 0.4 to 0.8 mm, the HRA scale can be utilized, and when the thickness of the solidified layer surpasses 0.8 mm, the HRC scale can be utilized.
Vickers, Rockwell and Surface Rockwell hardness values can be effortlessly changed over completely to one another and switched over completely to standard, drawing or client required hardness values. The comparing change tables are given in the global standard ISO, the American standard ASTM and the Chinese standard GB/T.
Assuming the nearby hardness of the part is high, the neighborhood extinguishing heat treatment can be performed through acceptance warming. Such a straight crease welded pipe is generally set apart with a neighborhood extinguishing heat treatment position and a nearby hardness esteem on the drawing. The hardness trial of the straight crease welded pipe will be done in the assigned region. The hardness analyzer can utilize the Rockwell hardness analyzer to test the HRC hardness esteem. Assuming the intensity therapy solidified layer is shallow, the surface hardness analyzer can be utilized to test the HRN hardness esteem.