5/27/2023 0 Comments Stainless steel pipe![]() ![]() The cookies is used to store the user consent for the cookies in the category "Necessary". This cookie is set by GDPR Cookie Consent plugin. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". ![]() These cookies ensure basic functionalities and security features of the website, anonymously. Therefore, there is a tendency for hardness tests to gradually replace tensile tests.Necessary cookies are absolutely essential for the website to function properly. In particular, due to the continuous advancement of hardness tester manufacturing technology and innovations, it is now possible to directly test the hardness of some materials that could not be directly tested before, such as stainless steel tube, stainless steel sheet and stainless steel strip. The hardness value of the material can be converted into the tensile strength value, which has great practical significance.īecause the tensile strength test is not easy to test, and it is convenient to convert the hardness to the strength, more and more people only test the hardness of the material and less test its strength. The hardness test is non-destructive, and there is an approximate conversion relationship between the material hardness value and the tensile strength value. Hardness test is the simplest, fastest and easiest method in material mechanical property test. The hardness test is to slowly press a hard indenter into the surface of the sample with a durometer under specified conditions, and then test the depth or size of the indentation to determine the hardness of the material. Especially for those materials whose shape is not convenient for hardness test, tensile strength test becomes the only means of testing mechanical properties. Almost all metal materials require tensile test as long as they have requirements for mechanical properties. Tensile strength test is the most basic test method for mechanical properties of metal materials. Tensile strength test is to make a sample of stainless steel pipe, pull the sample to break on a tensile testing machine, and then measure one or several mechanical properties, usually only the tensile strength, yield strength, elongation after fracture and section are measured Shrinkage. Tensile test and hardness test of stainless steel pipe? The stainless steel pipe after this furnace-type heat treatment has no scratches and good brightness surface. Using gas fuel or electric heating, various protective gases can be used. Equipped with convection cooling system for fast cooling. It can also be used to process capillary tubes in coils. The length of the steel pipe can be up to 40m. The hourly output is about 0.3 to 1.0 Tons. This bright annealing furnace type is suitable for small-diameter thin-walled precision special-shaped stainless steel pipes. (2) Mesh belt type bright annealing heat treatment furnace. ![]() It can be equipped with a convection cooling system to cool the special-shaped stainless steel tube faster. The protective gases that can be used are high-purity hydrogen, decomposed ammonia and other protective gases. This bright annealing furnace type is suitable for heat treatment of large-size and large-volume special-shaped stainless steel pipes, with an hourly output of above 1.0 Tons. (1) Roller-type bright annealing heat treatment furnace. The adoption of this heat treatment process not only improves the surface of stainless steel pipes, but also overcomes the environmental pollution caused by pickling.Īccording to the manufacturer of stainless steel pipes, according to the current world development trend, bright annealing continuous heat treatment furnaces are basically divided into the following two types: As a bright surface without oxidation can be obtained, the traditional pickling process is eliminated. Heat treatment technology of stainless steel pipe surfaceįor the heat treatment technology of the surface of stainless steel pipes, non-oxidation continuous heat treatment furnaces with protective gas are generally used abroad for intermediate heat treatment and final heat treatment of finished products. The Test Requirements of Standards Standard ![]()
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