The manufacturer of Stainless Steel Antenna will explain to you that the hardness of Stainless Steel Antenna has a certain influence on processing performance

The hardness of Stainless Steel Antenna has a certain hazard to the production and processing performance. Just like the production and processing performance of drilling, Stainless Steel Antenna is not good for production and processing if the hardness is high, the CNC blade is not moved, it will accelerate the damage of the CNC blade, the drilling performance of high hardness is not good; the hardness is low, it is not too good. Good production and processing, sticky material, the surface roughness of the stainless steel plate after production and processing is large, the precision is poor, and the hardness is low. The drilling production and processing performance is not very good. It is best to have only drilling and processing performance that is not high or low in hardness. In addition to drilling production and processing, processing techniques such as elbows and punching machines are closely related to hardness. And the main factors that harm the hardness are the carbon content of the Stainless Steel Antenna and the strip annealing treatment.

Below, the manufacturer of Stainless Steel Antenna lets everyone know about the hardness of Stainless Steel Antenna.

What is hardness. Stainless Steel Antenna manufacturers say that hardness is a key performance index value considering the hardness and softness of stainless steel plates. It can be understood as the ability of the raw material to resist elastic deformation, plastic deformation or destruction, or it can be described as the raw material resisting residual deformation and Ability to work against destruction. Hardness is not a simple physical concept, but a comprehensive index value of structural mechanical properties such as ductility, plastic deformation, compressive strength and ductility of raw materials. Hardness experiments can be divided into negative pressure method (such as Brinell hardness, Rockwell hardness, Vickers hardness, etc.), scratch method (such as Mohs hardness), rebound method (such as Shore hardness) and Various methods such as microscope hardness.

1. Brinell hardness (HB)
The manufacturer of Stainless Steel Antenna pointed out that Brinell hardness (HB) is an experimental load of a certain size. It presses a certain diameter hardened bearing steel ball or cemented carbide tool ball into the surface of the Stainless Steel Antenna, maintains the required time, and then relieves the pressure. Accurately measure the diameter of the lamination marks of the measured table. Its main purpose is the widest. The hardness is indicated by the diameter of the indentation, which is both visual and convenient. However, the Brinell hardness measurement method can only be applied when the hardness is not higher than HB450. Because the seamless steel pipe that is too hard will cause significant deformation of the bearing steel ball. The Brinell hardness measurement method is time-consuming. In order to obtain a clear indentation during the measurement, the capillaries must undergo surface preparation, polishing and other solutions in advance.

2. Rockwell hardness (HR)
The manufacturer of Stainless Steel Antenna said that the tensile force selected for Rockwell hardness is a diamond cone with a taper of 120° or a bearing steel ball with a diameter of 1/16 feet (1 foot is equivalent to 25.4mm), and the deep indentation is used as the The basis for calibrating the hardness value. The Rockwell hardness measurement is the same as the Brinell hardness, and it is an indentation test method. The difference is that it accurately measures the deep level of the indentation. Different loads and tensile forces constitute different Rockwell hardness scales. The common scales are A, B, and C, generally denoted as HRA, HRB, and HRC. Among them, HRC is the second only Brinell hardness HB in the steel pipe standard. Rockwell hardness can be used to measure capillaries from very soft to very hard, and the hardness value can be read immediately from the case of the hardness machine. However, because of its small indentation, the hardness value is not as accurate as the Brinell method.

3. Vickers hardness (HV)
Most of the basic principles of Vickers hardness measurement are the same as Brinell hardness, and the hardness value is also measured based on the load on the total area of ​​the indentation enterprise. The difference is that the tensile force of the Vickers hardness test is the square pyramid of diamond. It possesses the key advantages of Brinell and Rockwell testing methods. Although they get rid of their basic shortcomings, they cannot be compared with the simplicity and convenience of Rockwell testing methods, and the Vickers method is rarely used in steel pipe standards. However, compared with the Brinell and Rockwell hardness experiments, the Vickers hardness experiment has a wider detection range, from over-soft raw materials to super-hard materials, basically including a variety of raw materials.

4. Microscope hardness (HM)
The key is to clarify the hardness of very thin Stainless Steel Antenna, small and medium-sized high-precision parts (such as clock and instrument panel parts), measure the hardness elastic coefficient of hardened surface, and scientifically study the change of hardness in a small total area and its use in metallography Scientific research on the hardness of different phases in metal materials. The measurement method is basically the same as the Vickers hardness, but the load is not large, and it is counted in grams; the characteristics of the indentation are not large, and it must be measured with a reading optical microscope.